study committee b4 meeting in bangalore, india september...

Study Committee B4 Meeting in Bangalore, India September 22, 2005 List of Reports (by Agenda Item) 3.0 Paris 2004 Technical Session Summary 5.2 AG 01: Strategic Advisory Group/Zavahir 5.5 AG 04: HVDC System Performance/Fu 6.1 WG B4-38: Simulation of HVDC and FACTS/Huang (not posted) 6.2 WG B4-39, Integration of Large Scale Wind Power with HVDC and Power Electronics/Andersen 6.4 WG B4-41, Systems with Multiple HVDC Infeed/Davies 6.5 WG B4-43, Increased System Efficiency by Use of New

Generations of Power Electronics/Westermann

6.6 JWG B2-17, Impacts of HVDC Lines on Economics of HVDC Projects/Graham

6.7 WG B4-44, Planning Guidelines Dealing with HVDC Environmental Issues/Rashwan

6.8 JWG A2/B4-28, HVDC Converter Transformer Test Procedures/Fu 7.2 2007 SC Meeting in Japan/Hayashi 8.0 New Working Group Proposals/Soebrink, Szechtman 9.1 Report from IEEE/Woodford

CONSEIL INTERNATIONAL DES GRANDS RESEAUX ELECTRIQUES INTERNATIONAL COUNCIL ON LARGE ELECTRIC SYSTEMS

COMITÉ D’ETUDES B4 STUDY COMMITTEE B4 LIAISONS CCHT ET MATÉRIELS

D’ÉLECTRONIQUE DE PUISSANCE EN CA HVDC LINKS AND AC POWER ELECTRONIC

EQUIPMENT Chairman: Secretary: Márcio Szechtman Willis F. Long Mercados de Energia Ltda. University of Wisconsin-Madison Rua Voluntários da Pátria no 45 – S/1501 737 Extension Building Botafogo -22270-000 432 North Lake Street Rio de Janeiro-RJ Madison, WI 53706 BRASIL UNITED STATES Telephone and Fax: Telephone: 608.262.1199 +55 (21) 2539-2073 Fax: 608.263.3160 Email: [email protected] Email: [email protected]

9.2.1 Report #1 from IEC/Travin 9.2.2 Report #2 from IEC/Travin 10.1 CRIEPI Report /Hayashi 10.2 EPRI China Report/Zhang 10.3 Russia Electrotechnical Institute Report/Ivakin 11.1 India Projects/Prasher (see separate report) 11.2 Siemens Projects/Huang (not posted) 11.3 Norway Projects/Borgen (see separate report) 11.4 Finland Projects/Jurinsalo 11.5.1 Italy Projects #1/Pincella (see separate report) 11.5.2 Italy Projects #2/Pincella (see separate report) 11.6.1 South Africa Projects #1/Williamson 11.6.2 South Africa Projects#2/Williamson 11.6.3 South Africa Projects#3/Williamson 11.6.4 South Africa Projects#4/Williamson 11.6.5 South Africa Projects #5/Williamson 11.6.6 South Africa Projects#6/Williamson 11.7 UK and Areva Projects/Andersen 11.8 ABB Projects/Lescale (see separate report) 12.1 Japanese Operational Experiences/Hayashi 12.2 Skagerak Operational Experience//Borgen

CIGRE – PARIS SESSION 2004B4 HVDC & POWER ELECTRONICS

HVDC & FACTS Use for Large Power and Energy Transfers

Technical & Economic Challenges

Interconnections

Conversion of HVAC to HVDC Lines

Opportunities & Barriers posed by new market structures


Interconnections

? Experience of HVDC scheme acting as barrier to cascade instability and black out conditions

? Do FACTS have properties similar to HVDC

? Quantitative benefits of rapid control of active / reactive power contrwith different interconnection options

? New developments making interconnections more economic

? High-time to re-examine the standardisation of parts of converter sta


Conversion of HVAC to HVDC Lines

? Network operators considering the conversion of AC lines to HVDC

? Constraint factors in implementation of such conversions

? Latest advances in HVDC technology making conversions attractive


Opportunities & Barriers posed by new market structures

? Practical experience from the new market structure

? Additional equipment cost & network benefits of enhanced & new HVDC and FACTS equipment

? Main differences in technical requirements of captive & public interconnectors

? Power flow controllability mandatory for merchant transmission link

? Operating merchant links with FACTS devices


Transmission Projects based on HVDC and FACTS

Feasibility Studies

New Application & New Designs

Impact of Environmental issues on project economics

Control aspects to enhance system behaviour

Operating Experiences

Upgrading of existing systems


Feasibility Studies

? General guidelines to chose the FACTS device based on theprevalent system conditions

? Verification of cost difference in SC & TCSC system from other sources

? Assessment of True Value of additional dynamic capabilities ofHVDC & Power electronics equipment and their integration in Investment analysis.


New Applications & New Designs

? The lowest SCR at which the remains in service during disconnection of some circuits

? Suitability of this topology to operate weak AC networks

? Comparison of power losses of the scheme with conventional implementation

? Rejection / Delays of such new projects due to the low short circuit current capability of the installed switchgear

? Quantifying such rejections / delays

? Other upcoming technologies for fault current limitation


Impact of Environmental issues on projects economics

? Contributions welcome to increase the knowledge base inthe area of the environmental impact of HVDC


Control Aspects to Enhance System Behaviour

? Observation of high contribution to system loadability inother studies

? Control methods used by other manufacturers to ensurerobust performance & rapid post fault recovery

? Similar studies carried out using UPFC / other FACTS systems

? Performance of an embedded VSC Transmission scheme ascompared to UPFC


Operating Experiences

? Measures to be taken by Cigre to arrest the decline in number of such reporting schemes

? Performance of VSC Transmission schemes to be included in the report

? Reporting outages related to converter transformers separately

? In paper 211, why UPFC stopped gating during the AC system fault &why UPFC tripped during the faults linked to distant substation

? Performance acceptability by the system operator

? Cost savings due to shut down by power electronics during transient system events


Upgrading of Existing Systems

? Pros & cons of the upgrade approaches of Nelson river HVDCscheme & Konti-Skan 1 HVDC scheme

? Plans of upgradation for mercury arc thyristor based HVDCschemes & their implementation

? Components in thyristor based schemes requiring upgradation


Power Electronics Applications & Innovations in New Areas

Distribution Systems

Power Quality

Distributed Generation

Wind Power

Oil Platforms


Power Quality

? Comparison of cost & power loss of the transformer based compensator withthe conventional thyristor based SVC

? Other features of the transformer-based compensator making it preferable in certain environments

? Flicker suppression can be managed by other switching algorithms / topologies besides PWM switching

? Availability of KCPP for commercial testing of custom power devices from different manufacturers

? Similar test plants elsewhwere in the world

? Necessity of International Standards for testing of Custom Power devices


Wind Power

? Grid Codes requirements for restoration of generation for large wind farms

? Cost balance between cost of wind generator & cost of enabling the network to withstand the temporary power interruption

? Advantages of Hybrid HVDC scheme as compared to otheroptions


Oil Platforms

? Reliability of Hybrid HVDC as compared to VSC Transmission

? Penalties on Hybrid HVDC scheme being more spacious than VSC transmission scheme

? Pros & cons of Hybrid HVDC scheme

? Additional advantages of VSC Transmission scheme used for Troll A caseas the same could be met by extruded polymer AC cables also.

? Trade-off between extruded polymer AC & DC cable technology

? Plans to extend the VSC Transmission technology to voltages beyond 150 kV & power levels of 330 MW

SC B4 –AG 01Strategic Advisory Group

Bangalore 21 September 2005

Agenda

SC B4 Strategic Plan ReviewCommunication strategyMembership and contributions

Focus– Critical analysis– Brainstorming– Short terms milestones– Long term goals

Attendees

1. Marcio Szechtman – Chairman (part)2. Bill Long - Secretary3. Mohamed Rashwan – AG01/TF 01 4. Dennis Woodford - AG01/TF 01 5. Andrew Williamson - AG01/TF 01 6. Bjarne Anderson - AG02 (part)7. Kent Soebrink - AG028. Jussi Jyrinsalo - AG01/TF 02 9. Narinder Dhaliwal (part) 10. John McNichol (part)11. Abhay Kumar 12. Mohamed Zavahir

Strategic objectives

Strategic alignment of SC B4Active participation of MembersImproved communication with Target GroupsDecentralised activities (regional focus)Improved participation from developing countriesAddress relevant areas to develop within HVDC and Power ElectronicsTargeted SC B4 publicationsHelp Planners introduce HVDC as a viable optionPublic acceptance of HVDC as a transmission technologyACTION PLAN STATUS TABLE 2004.doc

Specific Actions

Input to AG-02 on working groups– Ideas to Improve member contribution

Skill set matrixWG member motivation

– Access to information to WG members– Communicating WG Outputs

TutorialsProgress reports; Intermediate publications

Specific Actions

SC meeting and tutorials to other parts of the world with no HVDCSC member reporting to be made easierRegular members to report on their neighbouring countriesPreferential subjects for colloquiums must be discussed with the SC during Paris session

Specific Actions

Website development– To convert the present site to Cigre standard

format– Create and maintain a working site for better

internal and external communication for SC B4Develop the Communication strategy and plan – Jussi Jyrinsalo

Communication strategy and plan- Objectives

To enable all communication aspects from the Strategic Plan– Raise awareness and quality of interaction with

SC B4 target groups– Become the single source of interface with the

outside world– Keeping information current and useful– Making information readily available to target

groups

CIGRE AG 04HVDC System Performance

DRAFT Minutes of Meeting

Georg Wild /Yanny Fu

Participants

6 members* and 7 guests joint the meeting.

Status of Reports received for the CIGRE 2006 Paper

2004 Paper 2006 PaperStation 2001 2002 2003 2004ChandrapurCross Channel Bipole 1 1Cross Channel Bipole 2 1CU 1 1 1 1Fennoskan 1 1 1 1Gotland 2 & 3 1 1 1 1Highgate 1 1 1Hokkaido-Honshu 1 1

2004 Paper 2006 PaperStation 2001 2002 2003 2004Kii ChannelKontekKonti Skan 2Malaysia-ThailandMcNeillNelson River BP1 Nelson River BP2New Zealand

2004 Paper 2006 PaperStation 2001 2002 2003 2004Rihand-Dadri 1 1SACOISakumaShin-Shinano 1Shin-Shinano 2Skagerrak 1 & 2Skagerrak 3Square Butte

2004 Paper 2006 PaperStation 2001 2002 2003 2004SwePolVancouver Island VindhyachalVirginia SmithVizag East-SouthGrita New

Total = 28 22 22 18

Table of received surveys up to August 23nd 2005

Discussion measures to increase reporting of HVDC Projects

• Draft a short letter from CIGRE top level to the CEOs of all HVDC users– Describe the benefits for the users– Good examples from Manitoba Hydro (Canada) and

Transpower (New Zealand)

• Andrew Williams and Mohamed Zavahir will draft the letter before October 15th 2005 and submit to Ivars Vancers

Task Force AG-04.02 HVDC Compendium

• Pehr-Olof Lindh reported on the status of the HVDC Compendium. Only two systems are not included (LAMAR and SASARAM). G. Wild will take care for the LAMAR information and will try to get the data from SASARAM.

• Pehr-Olof Lindh will retire and quit his job as convener of this task force at the Paris meeting 2006. The AG expressed their thanks for his 15 years of excellent effort. Andrew Williamson will take over the work.

Other Business

• Narinder Dhaliwal (Manitoba Hydro) reported from an increased number thyristor failures (25 years in operation).

• Narinder Dhaliwal and Leon Chetty (ESKOM) volunteered to look at this issue and to investigate whether this is an exception or there are other cases also.

• If this is generally true a draft proposal will be made for the new task force (targets, procedure, etc). Decision will be made in Paris 2006.

Next Meeting – CIGRE 2006 Conference, Paris

• The next meeting will be held in 2006 (Paris) at the first Sunday, from 9h-12h

18/09/2005 VSC Transmission Tutorial 1

Andersen Power Electronic Solutions Ltd

CIGRE WG B4.39

Integration of Large Scale Wind Power using HVDC and Power

Electronics

Convenor: Bjarne Andersen



Meetings

• Work Originally initiated in 2002• Work Re-started in Paris August 2004• 2nd Meeting held January 2005, Manchester, UK

• 3rd Meeting held September 2005, Bangalore, India

• Future meetings planned for January 2006, April/May 2006, August/September 2006



Membership

• Total Membership is 28 - 10 Classified as Major Contributors- 6 Provides occasional contributions- 12 provides minimal or no contributions

• Members not contributing are gradually removed from distribution list



Report Structure

• Overview of Wind Generator Technology• Interactions between Wind Farm and AC network• Overview of Grid Codes• Overview of HVDC and Power Electronics• How HVDC and PE could helps integration of Wind

Farms• Case studies• Bench Mark model for studies• Sample Studies (AC, LCC HVDC, VSC Transmission)• Economical overview• Future Developments



Progress

• Drafts of 6 of the chapters have been prepared

• Benchmark is virtually ready• 1st Drafts of 4 of the chapters were discussed in detail in Bangalore

• Some reassignments have been made to progress remaining chapters

• Sample studies will commence shortly• Target completion date is end 2006.



Help Please

CIGRE WG B4-39 “Integration of Large Scale Wind Power using HVDC and Power Electronics” would like published and unpublished information describing the connection of large wind farms (>50MW) to distribution or transmission networks.

Please send reports/papers or web links to: [email protected]

Systems with Multiple DC Infeed

Bangalore, India

J.B. Davies, Convener B4-41Canada

Accomplishments Since Last MeetingMIIF calculations.Further investigative work on commutation failures.Development of the CIGRE multiinfeedmodel with one link as a cable.Partial completion of Chapter 2.

MIIF MATRIX FOR THE MAPP MULTI INFEED SYSTEM

4.721.00000.11920.05950.0894SB/ArrowHead (E)

3.250.06921.00000.02970.0397CU/Dickinson (E)

n/a 0.02880.04841.00000.8761BP III/Riel (P)

2.500.02880.03840.64341.0000BP I & II/Dorsey

(E)

MinimumESCR

SB/ArrowHead

CU/Dickinson

BPIII/Riel

Bp I & II/

Dorsey

(P) - Planned

(E) - Existing

n/a - Not Available

MIIF MATRICES FOR THE DANISH MULTI INFEED SYSTEM

n/a1.0000n/a0.3311n/aGreat Belt 1 (P)

6.83n/a1.00000.77900.8688Skagerrak 3 (E)

6.66n/a0.74231.00000.7252Skagerrak 1+2

(E)

2.06n/a0.81720.71951.0000Konti-Skan 1+2

(E)

minimum ESCR

Great Belt 1

Skagerrak 3

Skagerrak 1+2

Konti-Skan 1+2

Minimum scenario

n/a1.0000n/an/an/aGreat Belt 1 (P)

18.07n/a1.00000.51960.6875Skagerrak 3 (E)

13.13n/a0.58831.00000.5088Skagerrak 1+2

(E)

4.06n/a0.69230.44881.0000Konti-Skan 1+2

(E)

minimum ESCR

Great Belt 1

Skagerrak 3

Skagerrak 1+2

Konti-Skan 1+2

Maximum scenario

(P) - Planned

(E) - Existing

n/a - Not Available

New InvestigationsCommutation failure investigations by Dr. Ani Gole and Ebrahim Rahimi.Multiinfeed CIGRE benchmark with one link as a cable by Dan Kell.

Commutation Failure Contour Map

Critical Contour Line

Inverter AC

90%95% 80%

Commutation Failure Contour Map

Multiinfeed System

Critical Contour Line 1 Critical Contour Line 2

Inverter 1

Inverter 2

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SC B4JWG B4-43/A3/B3

SC B4JWG B4-43/A3/B3

Increased system efficiency by use of new generations of power semiconductors

WG Meeting, September 19th, 2005Bangalore- Summary -

Convener: Dirk Westermann

JWG B4-43/A3/B3

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Target of this Working Group

Analyze the impact of rapid development of power semiconductors on power system applications

lower loss higher switching frequency

trend towards converter modularization as building blocks etc.

Evaluation and projection of possible new or enhanced equipment / devices / applications

Focus on network node perspective (substation) with respect to

Applications

Functionalities

System Integration

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大橋弘通：電学誌

パワー密度を新たな性能指標とした開発

パラダイムシフト

パワー密度を新たな性能指標とした開発

パラダイムシフト

開発の基盤は変換器設計法開発の基盤は変換器設計法

Development Semiconductor Applications

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Membership Status

ZAESKOMLeon Chetty

CHABBPeter Steimer

B4FREdFCSamuel Nguefeu

B4JPHitachiHiroo Konishi

C

C

C

C

B3CHABBLorenz Müller

B4INPGCV.K. Prasher

CAretiredJacques F. Allaire

ZAretiredRuaan du Toit

USAExponentStig Nilsson

DESIEMENSMichael Weinhold

ABB

ALSTOM

ECEI

KEMA

TU Ilmenau

Com

B4ZAAndrew Williamson

UKColin Davidson

Toshiyuki Hayashi

Yanny Fu

Dirk Westermann

Name

B4JP

B4NL

B4CH

RM WGCty

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Working Directions

Substitution of Switches

Converter Size / Losses

New Topologies / Modules

JWG B4-43/A3/B3

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Task Forces

New generation ofsemiconductors

Higher Sw. Frequ.Lower LossesHigh U, I

SwitchesTap ChangersBreakersOther switches

PES TopologiesVSCValvesOther Topologies

PE Systems„Add-Ons“„In-Built“

for functions likePower Flow ControlPQ improvementetc.

S/S IntegrationLayoutDesign ImpactReliabilityAvailabilityetc.

TF „Equipment Screening and

functionality projections“

TF for „Future Ratings and Topologies of Power Electronic Systems“

TF for „New application areas for

modules“

JTF for „Future Design Impact“

Michael Weinhold

Yanny FuStig Nillson (corresp.)

Andrew WilliamsonPeter Steimer

JWG B4-43/A3/B3

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Content Report TF „Trends ..“ (Michael Winhold)

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Content Report TF “Switching Applications ..” (Yanny Fu)

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Next Steps – open Points

Chapter 2 (Semiconductor) more information on SiCexpectations

Chapter 3 (Switching applications) add paragraph on thyristor based phase shifters

Chapter 4 (Ratings and Topologies) to be re-structured; content 95% ready

Survey on modularization activities from manufactures

Survey pro/cons modularization with respect to new generation of power semiconductors

If modularization is considered to be a viable direction –impact on substations to be analyzed

JWG B4-43/A3/B3

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Involvement other Task Forces

C1 – System Economics (R. Colin)

To be involved re. impact substation design

A2 – Transformers (M.P. Guuinic)

Involvement after module design has been analyzed

A3 – High Voltage Equipment (Klaus Fröhlich)

To be approached with current version of report re. switching applications

B3 – Substations – (J.A. Wiersma)

Involvement B3.1.TF4 „Multifunctional substations: Impact of new functionalities on substations design“ after module design has been analyzed

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WG Meetings

2.1 Meetings since last SC meeting

• WG Meeting Nürnberg, Germany, Sep. 23rd 2003 • WG / TF Meeting in Mannheim, Germany, Apr. 22nd 2004 • WG Meeting Paris, France, Aug., 31st 2004 • WG Meeting in Arnheim, Netherlands, January 29th 2005 • WG Meeting in Bangalore, India, September 19th 2005

2.2 Next meetings

• WG Meeting in Stafford, UK, January 2006

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Overall Time Line

Proposal of working group

Approval terms of reference and setup cooperation with other working groups

Finalization scope and approach. Definition working packages + membership proposals

First Tasks forces Active

Finalization step “as-is” mapping + impact of semiconductor development

Finalization „component view“ and step - modules and future projections

09.02

02.03

09.03

03.04

12.04

12.05

09.06 Finalization step (4) „station view“. CIGRE brochure and paper at CIGRE Session 2006

CIGRE SC B2 B2-05 (JWG17) 10

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Conseil International des Grands Réseaux Electriques

International Council on Large Electric Systems

CIGRE

Study Committee B2 "Overhead Lines"

JWG B2.17 "Impacts of HVDC Lines on the Economics of HVDC Projects"

ACTIVITY REPORT FOR 2005 - September

Convenor Secretary

João F. Nolasco John F. Graham Brazil


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JWG B2.17 "Impacts of HVDC Lines on the Economics of HVDC Projects"

Activity Report for 2005 - September Convenor : Joao Felix Nolasco

Secretary: John F. Graham

1. Highlights

The Joint Working Group JWG-B2.17 was created at the occasion of 2004 Cigré Biennal Session and had its Approval by Study Committee Chairmen of B2 and B4 at the dates August 31th and September 2nd, 2004, respectively. Later on Study Committee C1 joined the Group and nominated participants. It was hoped to start up the activities of the Group with a spring meeting, However, considering that SC B2 would meet in Brazil on September 2005, it was not viable to held an earlier meeting in Brazil Therefore, through an agreement with Study Committees’ chairmen of B2 and B4, it was decided to organize an audio-conference in lieu of a first direct meeting. After overcoming some difficulties, an audio-conference was held on May 18th 2005, with the participation of 10 members and 5 invited guests.

2. JWG B2.17 Strategic Plan and Action Plan

Proposed terms of reference and Task Forces

The Schedule of activities of JWG-B2.17 is shown in Table 1 at the end of this document. The use of HVDC transmission is increasing with the use of IGBT’s and/or other similar high technology equipment. This has made the DC technology an option for lower voltages as well as for higher voltages. The issues such as T-offs (Intermediate substations for supplying loads or AC Projects) and fault level requirements as well as the cost of terminal equipment have been addressed to a certain extent in many cases. The economics of a point-to-point HVDC project is determined by two major components, namely: a) The DC lines b) The converter stations The eventual supply of intermediate loads can also be considered. When evaluating which technology (AC or DC) to use it is necessary to include the cost of the terminal equipment and of the line linking the terminals. The cost of a HVDC project includes both the converter stations and the transmission line.


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To study the economics of the whole Project, three Task Forces will be created, as described in the following item 3. 3. Reports on the different actions in progress The Task Forces created for carrying out JWG-B2.17 activities are described in the following items, and the two first ones have already started their works. 3.1. Task Force BWG-B2.17 - TF01: Economics of DC Lines TF01 Leader: Mr. José A. Jardini – Brazil TF01 will review the work of B4 and of B2.09 (Former WG of B2) on the subject and will develop or consolidate models for evaluating the cost of DC lines. A set of some bipolar transmission lines will be selected from the following guiding options: Line voltages: ± 300 kV, ± 500 kV, ± 600 kV and ± 800 kV Line lengths: 600 km, 800 km, 1500 km and 3000 km Powers to transmit: 700 MW, 1500 MW, 3000 MW and 6000 MW. As agreed during the audio-conference, the following set of options was set for study:

Bipolar power

700 MW 1500 MW 3000 MW 6000 MW

800 km ± 300 kV ± 300 kV ± 500 kV

± 500 kV

± 500 kV ± 800 kV

1500 km ± 300 kV ± 500 kV

± 500 kV

±500 kV ± 800 kV

±500kV ± 800 kV

3000 km ± 500 kV ± 800 kV

± 500 kV ± 800 kV

The work will start with the three alternative sets: ( ± 300 kV, 600 km, 700 MW), ( ± 500 kV, 1500 km, 1500 MW) and ( ± 800 kV, 3000 km, 3000 MW). The alternative ± 500 kV may also be studied for monopolar transmission and permanent metallic return. Depending on the results obtained from the evaluations of the above-mentioned alternatives, after concluding them it will be discussed and decided whether the study of other alternatives will be necessary or not. In view of that, the following sub-tasks were created and presented in the meeting of September 9th and 10th in Rio, by the Task Force Leader of JWG-B2.17 TF01: TF01.1 – Over voltages;

TF01.2 - Corona effect consideration;


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TF01.3 Conductor temperature, and sag;

TF01.4 – Tower and foundation calculation;

TF01.5 – Line cost evaluation;

TF01.6 – Losses;

TF01.7 – Line and losses cost optimization;

TF01.8 - Electrode and electrode line.

3.2. Task Force BWG-B2.17 - TF02: Economics of Converter stations TF02 Leader: Mr. Hans-Peter Oswald – Germany 3.2.1 Selection of typical ranges of converter station types and the respective costs for every

alternative of the selected DC voltages, distances and power indicated in item 3.1; 3.2.2 Preparation of basic documents (mini-specifications) for requesting from manufacturers and suppliers estimative turn-key converter station costs for study purposes; 3.2.3 Suggestion of preliminary converter station types and costs for the selected HVDC Projects; 3.2.4 Preliminary evaluation and considerations around T-offs in new or existing HVDC lines for supplying intermediate AC Projects. This will be carried out through an aside document not affecting the whole project. For carrying out such activities the following works were planned and presented in the meeting of September 9th and 10th in Rio, by the Task Force Leader of JWG-B2.17 TF02: - Proposal for a calculation structure; - Mini-Specification; - Functional technical specification for the Converter Stations of a HVDC Transmission System.

3.3 Task Force BWG-B2.17 - TF03: Integration of works of TF’s TF01 and TF02 TF0 Leader: not yet defined (this TF03 will start its activities probably in the end of 2006 or beginning of 2007) Task Force TF03 will be formed for composing whole solutions for the projects under

investigation, therefore using the results of works carried out by Task Forces TF01 and TF02. Thus, TF03 will have the following basic activities:

3.3.1 Analyze the results of TF01 and TF02 and use them to determine the impact of HVDC

line in the economics of HVDC projects

3.3.2 Discuss the basic electric & mechanical performance of the selected HVDC lines and converter stations;


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3.3.3 Conclusions; 3.3.4 Final report (Electra Report and eventual Technical Brochure).

4. List of WG publications to be approved by SCB2 Members

The first official publications to be issued by JWG-B2.17 will begin probably in 2006, as its activities have only started in last May, 2005.

5. Relations with other organisations Possibly with IEEE and IEC/TC11 6. Tutorials

6.1 The optimization process applied to DC overhead lines.

The selection of the most suited conductors for an overhead line, with the particularities applicable to a DC line, is based on several electric and mechanical parameters, the most important of which are the power, the tower type and the terrain. However the economic factors, together with the reliability aspects, are actually the main parameters that govern the conductor selection.

How is the optimization carried out and what is the basic differences between AC and DC lines in this process? 6.2 The Power Electronics and the philosophy of present converter stations designed with the most modern and high-technology equipment: application to monopolar, bipolar and metallic return

DC transmission, use of Insulated Gate Bipolar Transistors (IGBT’s) and other HVDC issues, directed to Overhead Transmission Line engineers.

7. List of WG B2.17 members with address and e-mail See document “List of JWG-B2.17 Members Rev 1”. 8. List of WG B2.17 documents

The present list of administrative documents and preliminary technical reports can be seen in the document “JWG B2.17 List of documents – Version August 2005”.


5

Table 1: JWG-B2.17: Schedule of activities

Prepared by :

João Felix Nolasco Convenor JWG B2.17 August 29, 2005.

JWG B2.17

TECHNICAL ACTION PLAN : 2005-2008 Type of action & Title

RESPONSIBLE OR TF CONVENOR

Updated Shedule

Links with

José.A. Jardini 2005-2006 ER and/or

SC C1 SC B4

TF01 “Economics of DC Lines”

(Convenor TF01) TB -

Hans-Peter Oswald(?) 2005-2006 ER and/or

SC C1 SC B4

TF02 “ Economics of Converter stations ”

(Convenor TF02) TB Not defined 2006 to 2008

SC C1 SC B4

TF03

“ Integration of works of TF’s TF01 and TF02”

(Convenor TF03) TB + ER

WG B4-44 Planning Guidelines dealing with Environmental Issues The group had its first meeting in Bangalore. The discussion concentrated on the scope and the objectives of the WG. In attendance there were 10 people only three members of the WG. The current members of the group are:

• Kristen Faugstad Convener Norway • Mohamed Zavahir New Zealand • Clement Harvey Ireland • Maurice Smith Ireland • John McNichol Canada • Jan Lykkegaard Denmark • Mohamed Rashwan Canada • David Balloch Australia • Michael O’Brian New Zealand • Jussi Jyrinsalo Finland

In attendance: Name Country Phone E-mail Abhay Kumar Sweden +46-705869600 [email protected] Mohamed Zavahir New Zealand +64-4-4957465 [email protected] Rashwan Canada +1-204-989-4852 [email protected] John McNichol Canada +1-204-474-3171 [email protected] Bill Long USA +1-608-262-1199 [email protected] Emmanuel Lubini South Africa +27-11-8003126 [email protected] Brett Davies Canada +1-204-474-3726 [email protected] Pehr-Olof-Lindh Finland +358-303955138 [email protected] Jussi Jyrinsalo Finland +358-303955118 [email protected] The following actions were decided:

• Emmanuel Lubini was added as a member of the working group • A questionnaire for a survey of the operating systems and their environmental

experience to date will be prepared. John McNichol will do this task. The target date is two months from now.

• A questionnaire for a survey of the systems that are being planned and their environmental experience in getting licenses will be prepared. Emmanuel Lubini through his environmental group in ESKOM will do this task. In addition both

John McNichol and Brett Davies will assist and Jossi Jyrinsalo will contact Sweden for assistance with task. The target date is two months from now.

• It is planned to have a WG meeting in Norway in April or May of 2006 • The group requests both regular members of India & China to recommend WG

members in view of the large number of projects in both countries. Submitted by M. Rashwan

JWG A2/B4JWG A2/B4--2828HVDC Converter Transformers HVDC Converter Transformers

Progress Report No.2

Milan Saravolac / Yanny Fu

SC B4 Meeting Bangalore, September 2005

SC B4 Meeting, Bangalore, September 2005

Contents

MeetingsJWG Members – current statusJWG Progress SummaryHVDC Converter Transformers Reliability QuestionnaireBangalore MeetingAction Plan Review


Meetings

Paris, 30th August 2004, Paris - InauguralArnhem (KEMA) 27th January 2005Bangalore, 21st September 2005SC B4 Colloquium on the “Role of HVDC, FACTS and Emerging Technologies in Evolving Power Systems”.


JWG MembersConvenor: M.Saravolac FranceActive members: A.C. Hall UK

G.M.Bastos BrazilJ.Hajek SwedenJ.M.Malik IndiaZ.Liu ChinaN.S.Dhaliwal CanadaP.Heinzig GermanyP.W.Christensen DenmarkT.Freyhult SwedenU.Piovan ItalyV.Prasher IndiaY. Fu The Netherlands

Corresponding members: C.Peixoto BrazilM.Bridger New ZealandR.Gulati India

Observers: A.Carlson SwedenJ.F.Graham Brazil


Review of the IEC draft standard 61378-3Review of the CIGRE Brochure No. 227.HVDC Converter Transformers Reliability Questionnaire

Progress Summary


Questionnaire

Part 1 -- regarding the characteristics of the transformers and the related HVDC system

Part 2 -- applying only to Transformer Failures that were not reported to the last survey by JTF B4.04/12-1.

11 users out of 22 reported failures

Progress Summary


Progress Summary

4,82

2,09

6

22,5

0

5

10

15

20

25

30

1991-2002 (11years) 2003-2004 (2 years)

Failures/Year Potential Failures/Year

HVDC Transformers - Annual Failure Rate


Progress Summary

The problem with the reliability of the HVDC Converter Transformers persists with the average annual failure rates for both, failures and potential failures increasing.

Reporting period Failures during the period Failures/year

1991-2002 (11years) 53 + 23P 4.82 + 2.09P

2003-2004 (2 years) 12 + 45P 6 + 22.5P


Bangalore MeetingParticipants WG meeting:

8 members and 20 guests


Review of MoM Jan. 2004 at KEMA

There is no IEEE design review report. Cigre design review report will be used as the base.Peter Heinzig made a draft report regarding differences between IEC and IEEE standards.


Moscow report June 2005

Milan Saravolac presented the progress report made for Cigre colloquium in MoscowReport accepted without any comment.


Discussion - Summary of failure report

Summary of questionaire presented to participants including feedback from utilities.Mr. Bhowmick (PG India) made presentation on recent failures in their systems, covering various types of failures such as dielectric, thermal, and component failures.Mr. Andersson (ABB) made presentation on research work regarding oil corrosion and deposition of Cu2S, including information on copper passivators.


Discussion - How to proceed further

Following aspects were selected as priorities and definition of associated actions:Turn-to-turn failure in valve windings (dielectric problems)Leads and cleats, including tapping leads (dielectric and thermal problems)Bushing failuresCorrosive sulphur in oil related problemsPolarity reversal test on 3 winding converter transformersAdequacy of existing standards in addressing actual operating conditions of HVDC converter transformers


Action planTo set up a task force to address specifications for HVDC transformers which fully takes into account interaction with converter station. TF members: Narinder, Yanny, Peter, Ugo, Mr. Malik, Jan (?). They will prepare a proposal for inclusion in HVDC transformer specificationOnce the requirements are defined, the necessary design verification method and criteria will be looked at, as well as special test requirement if feasible. Results of TF to be expected at the end of 2007.No action required at this point regarding oil corrosion, this will be covered by A2 WG.To investigate the consequential effect of increased voltage andcurrent ratings on DC bias.To use available data on conditioning monitoring in conjunction with activity of TF.


Next meetiong

In Zurich (Weidmann) in Jan. 2006.Date to be confirmed.


Action Plan ReviewTo complete the first coarse analysis of the questionnaires by the Moscow Colloquium in June 2005. - DoneBy September 2005 to identify the main issues and corresponding action plan following the Colloquium. -DoneBy the end of 2005 to complete the first coarse failure mode analysis based on the Reliability Questionnaire data.


Action Plan ReviewBy the 2006 CIGRE Session in Paris, to present the final failure mode analysis and preliminary version of design review document.

By the end of 2006 to have a draft document on the HVDC Converter Transformer specifications.

By the 2007 Colloquium, to have the final version of design review document and a draft proposal for the test recommendations.


Action Plan Review

By the end of 2007, to have the final document on the specifications.

By the CIGRE 2008 Session, to have the final document on the test recommendations and final document on the life management.

By the end of 2008 to have a tutorial on reliability of HVDC Transformers.

Abstracts of CIGRE Symposium 2007 in Japan

1. Subject; Power System Planning & Asset-managementunder the Deregulation of Power Sectors (tentative)

2. Date; November 4 – 10, 2007 (tentative)

3. Place; in Kansai Area (the second largest city Osaka, international

harbor city Kobe or historical city Kyoto)

4. Program; (tentative)

Date Symposium Events SC

Nov. 4 (Mon) SC/WG

5 (Tue) SC/WG

6 (Wed) Reception Welcome Cocktail SC/WG

7 (Thu) Symposium

8 (Fri) Symposium JNC Dinner

9 (Sat) Symposium

10 ‘Sun) Technical Tour

1. CIGRE Central Office* Agreement of first outline (Subject, Dates) by TC Chairman and Secretary

General (June, 2005)* Approval of preliminary program by TC, EC and AC (~ September, 2005)

2. Technical Organizing Committee(Chairman or Representative of SC’s and host National Committee)

* Appointment of a Paper Selection Committee* Appointment of the Section Chairmen and Special Reporters* Issue of Call for Papers with Preferential Subjects (~ end of October, 2006)* Receipt of Abstracts and Selection of Papers* Receipt of Full Papers and Check/edition of Papers (~ end of July, 2007)* Proposal of Joint Events (Tutorials, Exhibition)* Issue of the Final Program (List of Papers, Events, Schedule)

3. Japan National Committee* Decide the Location of Symposium and Select the Premises* Organize the Opening and Closing Ceremony* Select Associated Events (SC Meetings, Tutorials, Tours) and

Tours for Accompanying Visitors

Tasks for CIGRE Symposium 2007

Japan National Committee

・Managing Committee

・WG on General Affairs(Registration, Poster)・WG on Events(Symposium, Tour,

Exhibition)・WG on Premises(Accommodation, Parties)・WG on Finance

Execution Committee

Central Office

Administrative Council

Executive Committee

Technical Committee

SC C1SC B1 SC B4 SC C5

Technical OrganizingCommittee

・Paper SelectionCommittee

First Outline & Pre. Program

Appointment & Selection

Event &Premises

Registration, Ceremony& Finance

Organization of CIGRE Symposium 2007

Creating a "New" Kansai !Joining forces to be "Unified" Kansai !

At first glance, Kyoto may seem like a conglomeration of opposites. Thousand-year old temples filled with Buddhist statues and modern universities filled with some of the nation'sbrightest students and professors. Winding narrow footpaths to be explored leisurely and the high-speed bullet train to whisk one off to Osaka, Kobe, Tokyo and beyond. A 400 year old tradition of preparing green tea, and McDonald's. These are not simply a list of random pairings, but actual examples of how Kyoto masterfully combines traditional and contemporary thought, nature and technology, to create a city unique in all the world.Kyoto is eager to welcome your convention to this magnificent city.

Sanjusangendo TempleKinkakuji Temple

Aoi-Matsri in May

Red-leaves in Automn

Kyoto's History and Kyoto TodayWhat makes Kyoto unique?

21 3 4 5 6 7 8 9 10 11 12 21

ACTIVITIES

SCB4 DB implementation

Full WG proposals

Initial WG proposals

Prepare recommendationof new WG activities

Gap analysis

Coverage of HVDC and PE

Month of the year

AG B4 - 02

Rolling Time Schedule

Subjects for new WG proposedin the VSC transmission report

• Testing of VSC Substation equipment• Determination of power losses for VSC transmission.• Harmonic filtering for VSC transmission.• Bulk power transmission (>1000 MW) using VSC-

transmission.• VSC dc grids.• VSC for offshore applications.• VSC cable transmission in ac grids.

New subjects discussed in Paris 2004 - 1

• A Planning Guideline for HVDC environmental issues.

• Life cycle assessment of HVDC and Power Electronics projects

• Power Electronics education tools on the Study Committee website.

• DC vs. AC technical/economic planning, • similarly for cable systems, • B4-C4 joint study of system technical performance

relating to HVDC/FACTS issues.

New subjects discussed in Paris 2004 - 2

• DC land cables• Technical performance, pros and contra d.c. / a.c.

with FACTS • Problems with HVDC and FACTS• Evaluation of dc lines using HVDC or VSC and ac

lines with FACTS• PE for more efficiency

Other possible new subjects

• DC grids.• DC for offshore applications.• DC cable transmission in ac grids. • Protection and control of VSC and PE during a.c.

grid faults and sever a.c. grid conditions.• PE with energy storage.

NEW WGs PROPOSED FOR SC B4

• WG to study the performance of TCSC systems and applications/specifications

• VSC for Bulk Transmission: Technological and Economic Issues and Challenges

• HVDC Technology for 800 kV Applications: Identification of Special Design Issues, Reliability, Systems Interaction and Technological Challenges

SC B4SC B4

IEEE Liaison ReportIEEE Liaison ReportSeptember 2005September 2005

ByByDennis Woodford, ChairmanDennis Woodford, Chairman

IEEE Subcommittee HVDC and FACTSIEEE Subcommittee HVDC and FACTS

WG 15.05.02: Dynamic Performance and WG 15.05.02: Dynamic Performance and ModellingModellingof HVDC Systems and Power Electronics for of HVDC Systems and Power Electronics for

Transmission Systems (Ram Transmission Systems (Ram AdapaAdapa))

Four position papers have been completed Four position papers have been completed or prepared or prepared –– EMTP type models for dc EMTP type models for dc systems, VS systems, FACTS, and VSC systems, VS systems, FACTS, and VSC based FACTSbased FACTSBenchmark test system to validate FACTS Benchmark test system to validate FACTS and HVDC and HVDC –– and Wind Generators and Wind Generators

WG 15.05.02: Dynamic Performance and WG 15.05.02: Dynamic Performance and ModellingModellingof HVDC Systems and Power Electronics for of HVDC Systems and Power Electronics for Transmission Systems Transmission Systems –– Benchmark ModelBenchmark Model

Bus 6

Bus 12Bus 3

Bus 11Bus 8

Bus 7

Bus 1

Bus 9

Bus 2Bus 10

Bus 5

Bus 4

AREA 2

AREA 3

AREA 1

230 kV

230 kV

345 kV

WG 15.05.14: Education on WG 15.05.14: Education on HVDC/FACTS EducationHVDC/FACTS Education

This working group is chaired by Professor This working group is chaired by Professor Bill Long.Bill Long.A number of Panel Sessions have been A number of Panel Sessions have been held or are being organized including:held or are being organized including:FACTS FundamentalsFACTS FundamentalsHVDC FundamentalsHVDC FundamentalsReactive Compensation for Wind FarmsReactive Compensation for Wind Farms

UnoUno LammLamm Award CommitteeAward Committee

Bill Long is retiring as ChairmanBill Long is retiring as Chairman

2005 Award was made to Michael Woodhouse of 2005 Award was made to Michael Woodhouse of the UK.the UK.

Nominations can be made Nominations can be made –– see me for further see me for further informationinformation

WG 15.05.15 Use of Power Electronics in WG 15.05.15 Use of Power Electronics in Major Grids for Generation RequirementsMajor Grids for Generation Requirements

GezaGeza JoosJoos is the Chairmanis the ChairmanAt present preparing a report on the Major At present preparing a report on the Major Grids of the future, to be presented as a Grids of the future, to be presented as a Panel Session in 2006.Panel Session in 2006.

WG 15.05.08 HVDC Economics and WG 15.05.08 HVDC Economics and Operating StrategiesOperating Strategies

Chaired by Mark ReynoldsChaired by Mark ReynoldsThe objective of this working group is to The objective of this working group is to provide a venue for discussion. No provide a venue for discussion. No reports need be produced.reports need be produced.

WG 15.05.15 Government Education of WG 15.05.15 Government Education of FACTSFACTS

Chaired by Greg ReedChaired by Greg ReedPlan strategies to impress US Plan strategies to impress US GovtGovt officials officials with the benefits and opportunities that with the benefits and opportunities that can be achieved with FACTScan be achieved with FACTS

WG 15.05.13 Transmission System WG 15.05.13 Transmission System Applications Requirements for FACTS Applications Requirements for FACTS

ControllersControllers

Chaired by Mike HendersonChaired by Mike HendersonFACTS planning guide submitted to IEEE FACTS planning guide submitted to IEEE A special guide for transmission plannersA special guide for transmission planners

1

2005-09-20

INTERNATIONAL ELECTROTECHNICAL COMMISSION TECHNICAL COMMITTEE NO. 22: POWER ELECTRONIC SYSTEMS AND EQUIPMENT SUB-COMMITTEE 22F: POWER ELECTRONICS FOR ELECTRICAL TRANSMISSION AND DISTRIBUTION SYSTEMS

Report from the SC 22F secretary on the progress made since the last SC 22F meeting in Paris, France, on September 6-7, 2004

------------------

The last meeting of SC 22F "Power electronics for electrical transmission and distribution systems" was held in Paris, France, on September 6-7, 2004, just after the CIGRE General Session. The reports on the results of IEC SC 22F work in 2003-2004 was presented to CIGRE SC B4 in the beginning of September 2004. The following work was carried out by IEC SC 22F from September 2004 till September 2005:

1. IEC 60919, Ed. 2 (Technical Report) "Performance of high-voltage direct current (HVDC)

systems with line commutated converters". This second edition of this IEC Technical Report cancels and replaces the first edition,

published in 1988, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous

edition: a) The document concerns only line-commutated converters. b) Significant changes have been made to the control system technology. c) Some environmental constraints, e.g. audible noise limits, have been added. d) The capacitor coupled converters (CCC) and controlled series capacitor converters (CSCC)

have been included. Committee draft for voting on HVDC steady-state operation was developed and unanimously approved

by 10 P-members (actively participating IEC National Committees) and the corresponding Technical Report IEC 60919-1, Ed. 2 "Performance of high-voltage direct current (HVDC) systems with line commutated converters - Part 1: Steady-state conditions" was published in February 2005.

IEC 60919-2 Ed.2.0 “Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching” was included into the Programme of Work for SC 22F Maintenance Team (MT) 11 (convenor Mr. B.T. Barrett, UK) and MT 11 should prepare the first Committee Draft (CD) in December 2005. It is planned to publish Part 2 of the Technical Report in June 2007.

As to IEC 60919-3, Ed. 2 "Performance of high-voltage direct current (HVDC) systems with line commutated converters - Part 3: Dynamic conditions" it was decided to accept target dates for review 2006-12-30 and for publication 2008-12-30.

2. New Work Item Proposal "High voltage direct current (HVDC) substation audible noise" based on CIGRE WG14.26 Report (CIGRE Brochure 202) was circulated in 2004, approved by the majority of P-members and the necessary 4 experts were nominated by the IEC National Committees. New IEC SC 22F Working Group 12 was organized for preparing a Committee Draft of the new International Standard IEC 61973 Ed.1 "HVDC substation audible noise". Mr. Piotr Login (Sweden) was nominated by the Swedish IEC National Committee as the convenor of WG 12.

Project IEC 61973 Ed.1 "HVDC substation audible noise" was put into the SC 22F Programme of Work. The first Committee Draft should be ready in December 2005 and the publication of new International Standard is planned in December 2007.

3,4. According to the decision taken at IEC SC 22F meeting in Montreal in 2003 the following two double-logo IEC/CIGRE Publicly Available Specifications (PASs) were published in 2004:

- IEC/CIGRE PAS 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" based on CIGRE Report WG 14-12;

- IEC/CIGRE PAS 62001 Ed. 1, "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" based on CIGRE WG 14-28 and 14-31 Reports on Filtering for HVDC and FACTS.

All the electronic versions of CIGRE SC 14 (B4) reports used by IEC SC 22F for the development of IEC 61973, IEC/CIGRE PAS 61975 and IEC/CIGRE PAS 62001 were kindly sent to me by Mr. M. Szechtman, Prof. B. Long and the convenors of the corresponding CIGRE B4 Working Groups.

Comment [JRA1]: Please give a brief description of the major technical changes as compared with the first edition.

2

According to the acting IEC Rules if a document is accepted as an PAS, it will at the same time be automatically included in the Programme of Work of the committee concerned, with a view to transforming the IEC-PAS into a normal International Standard. The IEC Committee of Action agreed to a trial period of three years for internal PASs as Pre-Standards.

Both published IEC/CIGRE PASs mentioned above were included by the IEC Central Office into the Programme of Work of SC 22F with the initial stage date June 2004, next stage (Committee Draft) target date December 2005 and Requested publication stage date September 2008.

Letters to SC 22F active National Committees were circulated requesting to nominate members and the convenor for new Working Groups to develop new International Standards IEC 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" and IEC 62001 Ed. 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" by usual IEC procedure taking into account the above target dates. However only two National Committees (Japan and Germany) nominated experts for each new Working Group but it was necessary to have 4 experts or more to form a WG. Therefore IEC/CIGRE PASs remain to be IEC Pre-Standards till August 2007 and can be transformed into acting IEC International Standards if some other IEC National Committees nominate two more experts for each of two Working Groups.

5. It was decided at the last SC 22F meeting in Paris in September 2004 to begin the procedure of issuing a new double-logo IEC/CIGRE PAS "General guidelines for the design of ground and sea electrodes for HVDC links" based on CIGRE WG 14-21 Guide by circulating a corresponding New Work Item Proposal. The proposal to issue IEC/CIGRE PAS "General guidelines for the design of ground and sea electrodes for HVDC links" will be circulated by the end of 2005. If the proposal is agreed by SC 22F P-members and PAS is published it becams an IEC Pre-Standard and SC 22F secretary is to circulate a letter to SC 22F P-members asking for experts for a new Working Group.

6. There is a D-type liaison between IEC SC 22F and IEEE-PES High-Voltage Power Electronics Stations Subcommittee (SC i0). I have been informed that in accordance with the liaison the work for the consolidation of IEEE and IEC HVDC Valve testing standards has just started at the SC i0. I sent an electronic file of the latest International Standard IEC 60700-1, Ed.1:1998, "Thyristor valves for high-voltage direct current (HVDC) power transmission - Part 1: Electrical testing - Amendment 1(2003-02)" to Dr. George Karady, the chair of IEEE WG i1 to help them to proceed the work.

7. CIGRE WG B4 37 finished its work and the Technical Brochure No. 269 on Voltage Source Converter (VSC) Transmission was published in Electra No. 219. I am very grateful to Dr. B.Andersen, the convenor of WG B4 37, who kindly sent the electronic version of this Report to me. I intend to circulate it as a proposal for possible IEC/CIGRE PAS by the end of this year.

8. So practically all the Drafts (5) being developed now by IEC SC 22F are based on the corresponding CIGRE B4 Reports providing a solid scientific base for future IEC International Standards or Technical Reports in the field of power electronics for electrical transmission and distribution systems.

Last years IEC SC 22F has also been interested in similar scientific base for the development of International Standards on VSC testing and testing of high-voltage valves for VSC. Two years ago this problem was discussed by the officers of SC 22F and CIGRE SC B4 and the decision was taken to discuss it again when Report on Voltage Source Converter (VSC) Transmission is ready. Therefore I request SC B4 to consider this problem again and make necessary steps to establish a new SC B4 to develop corresponding Report(s).

9. The decision was taken at the last SC 22F meeting in Paris in September 2004 to circulate an information document on the comparison of terms and definitions used in IEC 60633 Ed.2 “Terminology for high-voltage direct current (HVDC) transmission” and in the International Electrotechnical Vocabulary (IEC 60050, Part 551: Power Electronics) to IEC National Committees with the request to comment on the possible necessity of amendments in IEC 60633 Ed.2. This document will be circulated by the end of 2005.

10. Next IEC SC 22F meeting has been planned in 2006 but the meeting place has been not agreed yet.

Thank you.

Lev V. Travin Secretary IEC/SC 22F 2005-09-20

22F/108/RM 1

22F/108/RM For IEC use only

2004-09-06/07

INTERNATIONAL ELECTROTECHNICAL COMMISSION TECHNICAL COMMITTEE NO. 22: POWER ELECTRONIC SYSTEMS AND EQUIPMENT SUB-COMMITTEE 22F: POWER ELECTRONICS FOR ELECTRICAL TRANSMISSION AND DISTRIBUTION SYSTEMS Unconfirmed minutes of SC 22F meeting in Fontenay-aux-Roses, France, on the 6th and 7th September, 2004

------------------ Present:

Chairman

Mr. M. Lalander (Sweden)

Secretary: Mr. Lev V. Travin (Russian Federation)

COUNTRY

DELEGATES

GERMANY Mr. Peter Lips (Head of delegation) Mr. Michael Weinhold

JAPAN Dr. Shigeru Tanabe

RUSSIAN FEDERATION Mr. Lev Travin

SWEDEN

Mr. M. Lalander

UNITED KINGDOM

Mr. Brian T Barrett

22F/108/RM 2

CONTENTS Pages

1 Opening of the meeting 3

2 Introductions 3

3 Approval of the agenda 3

4 Note the confirmation of the minutes of the meeting held in Montreal, Canada, on the 13th, 15th and 16th October, 2003

3

5 Information from IEC Central Office 3

6 Report from the secretary on the progress made since the last meeting 4

7 Report on the work of Maintenance Team 11 "IEC 60919-1 Ed.1: Performance of high-voltage direct current (HVDC) systems with line commutated converters "

5

8 Discussion of comments on IEC 60919-1 Ed.2 "Performance of high-voltage direct current (HVDC) systems with line commutated converters - Part 1: Steady-state conditions – Second edition"

5

9 Report on the work of a new Working Group 12 and discussion of comments on IEC 61973 Ed.1 "High voltage direct current (HVDC) substation audible noise"

6

10 Decision on the further development of IEC/PAS 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations"

6

11 Decision on the further development of IEC/PAS 62001 Ed. 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems"

7

12 Discussion of the expediency of the further work on document "General guidelines for the design of ground electrodes for HVDC links".

7

13 Information on the work done at JWG TC33/SC22F on IEC 60143-4 “Series capacitors for power systems – Part 4: Thyristor controlled series capacitors”.

8

14 Discussion of the liaison between IEC SC 22F, IEEE-PES High-Voltage Power Electronics Stations Subcommittee (IEEE I0) and CIGRE B4 "HVDC and power electronics"

8

15 Update the Program of Work of TC/SC 22F as recorded by IEC Central Office 10

16 Update the Strategic Policy Statement of SC 22F 10

17 Proposals for future work 11

18 Any other business 12

19 Date and place of the next meeting 12

20 Close of the meeting 12

Annex A - Updated Programme of work of SC 22F 13

Annex B - Updated Strategic Policy Statement of SC 22F 14

Annex C - List of all decisions made by SC 22F during its meeting in Montreal 17

22F/108/RM 3

1. OPENING OF THE MEETING Mr. Philippe Martineau, Technical officer of the UTE (Union Technique de l’Électricité et de la Communication) greeted the delegates and explained the purpose of this organization. Mr. M. Lalander (Sweden), the chairman of SC 22F, welcomed the delegates and opened the meeting. It was agreed that Mr. M. Lalander and Mr. L. Travin (SC22F secretary, Russian Federation) could act in the dual capacity of their official SC 22F positions, as well as the official representative of their countries. Decision: To let Mr. M. Lalander, the chairman of SC 22F, and Mr. L. Travin, the secretary of SC 22F, to act also as the national representatives at the current SC 22F meeting. 2. INTRODUCTION OF THE SC 22F MEMBERS PRESENT All SC 22F delegates present at the meeting introduced themselves. 3. APPROVAL OF THE AGENDA - 22F/105/DA As the IEC National Committee of Sweden did not present a New Work Item Proposal on Testing of VSC valves for HVDC as had been planned Mr. L. Travin (Russia) proposed to delete Item XV “Discussion on the NP for testing of VSC valves for HVDC” from Draft Agenda 22F/105/DA. This proposal was agreed by all the delegates and this item was deleted from the Agenda. The Agenda was then approved with this amendment. Decisions:

1. To delete Item XV “Discussion of the NP for testing of VSC valves for HVDC”. 2. To approve the Agenda with the proposed amendment.

4. NOTE THE CONFIRMATION OF THE MINUTES OF THE MEETING HELD IN

MONTREAL, CANADA, ON THE 13TH, 15TH AND 16TH OCTOBER, 2003 - Document 22F/90/RM

The Minutes of the Montreal SC 22F meeting 22F/90/RM were approved as no comments from IEC National Committees were received and no comments were made by the delegates present. Item XV: Mr. M. Lalander noted that there was a misleading information from Mr. M. Cocimarov concerning the necessity of establishing a D-type liaison with CIGRE for issuing double-logo PASs. In fact it was not necessary as an A-type liaison had been already established between IEC 22F and CIGRE B4. Decision: To confirm the Minutes of SC 22F meeting in Montreal (22F/90/RM). 5. INFORMATION FROM IEC CENTRAL OFFICE Mr. L. Travin informed the delegates that a request had been received from the Canadian IEC National Committee to downgrade Canada's status from Participating to Non-participating status for IEC/SC22F. This change has been made by the IEC Central Office and therefore IEC/SC 22F has now 13 P-members (China, France, Germany, India, Italy, Japan, Korea (Rep. of), Portugal, Russian Federation, Spain, Sweden, Switzerland, United Kingdom). Document SMB/2885/INF “Projects older than three years” informed all TC/SC secretaries about delayed projects. There is only one project of SC 22F, namely IEC 60919-1, Ed. 2 “Performance of high-voltage direct current (HVDC) systems with line commutated converters – Part 1: Steady-state conditions” which is older than 3 years but less than 4 years and it is planned to publish it as a Technical Report by the end of 2004. The SMB requested Central Office to alert any technical committees, with projects approaching three years, that in two years (i.e. if they are older than five years) these projects will be put at the preliminary stage. Technical Committees are reminded that they can use other deliverables such as PAS, TR, and TS as indicated on page 8 of the IEC Supplement to the ISO/IEC Directives - Procedures specific to IEC. The IEC Central Office informed TC/SC chairmen and secretaries (Administrative Circular AC/8/2004) that as of 2004-03-29, the new application “IEC Experts management” has been approved. This new system will allow National Committees to: • update the members' existing data (address, e-mail, etc.); • appoint experts to WG/PT/MTs;

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• designate delegates and the Head of Delegation for TC/SC meetings; • extract various lists. TC/SC Officers (Chairman, Secretary, Assistant Secretary) will have the possibility of extracting lists, but will not be able to make changes to the data. Delegates agreed to take into account the above information. 6. REPORT FROM THE SECRETARY ON THE PROGRESS MADE SINCE THE LAST

MEETING Mr. L. Travin, SC 22F secretary, presented a report on the progress made since the last SC 22F meeting. 1. Maintenance of IEC 60919-1, Ed. 1 (Technical Report) "Performance of high-voltage direct current (HVDC) systems" (three parts). Committee draft for voting (22F/95A/CDV) "Performance of high-voltage direct current (HVDC) systems with line commutated converters - Part 1: Steady-state conditions" was prepared, circulated and voted in 2004. The CDV was unanimously approved by 10 P-members (22F/104/RVC) so it will be published as an IEC 60919-1, Ed. 2, Technical Report after discussion of comments at SC 22F meeting in Fontenay-aux-Roses on September 6-7, 2004. The UK IEC National Committee nominated Mr. Brian T Barrett instead of Mr. N. Kirby as the convenor of MT11 on 2004-02-10 and the corresponding changes of MT11 membership were circulated (22F/99/MT). SC 22F secretariat has sent all the necessary information to him and his report has been planned at the current SC 22F meeting (see 22F/105/DA, Item VII). 2. New Work Item Proposal "HVDC substation audible noise" based on CIGRE WG14.26 Report (CIGRE Brochure 202) was re-circulated in 2004 (22F/91/NP) and approved by the majority of P-members and the necessary experts were nominated (22F/100/RVN). New IEC SC 22F Working Group 12 were organized for preparing a Committee Draft of the new International Standard IEC 61973 Ed.1 "HVDC substation audible noise" by 2005-06-30. Mr. Piotr Login was nominated by the Swedish IEC National Committee as the convenor of WG 12 and was given all the necessary information from SC 22F secretariat to begin the work. 3. New Work Item Proposal "General guidelines for the design of ground electrodes for HVDC links" based on CIGRE WG14.21 Report, was also re-circulated (22F/92/NP) and again rejected in 2004 due to the same reason (only three experts instead of necessary four ones were nominated by Germany, Korea (Rep. of) and Sweden). Mr. L. Travin tried to get the missing expert from IEC National Committees of China, France, Japan and Spain but failed. It should be decided at the current SC 22F meeting what to do with this item. 4. At the last SC 22F meeting in Montreal in October 2003 it was also decided to begin the procedure of issuing double-logo IEC/CIGRE Publicly Available Specifications (PASs) based on CIGRE B4 WG 14.12 Report “System Tests for HVDC Installations”. Therefore New Work Item Proposal on IEC/CIGRE PAS "System tests for high-voltage direct current (HVDC) installations" was prepared and circulated (22F/96/NP). Positive comments were received from SB1 members (22F/96A/NP).The majority of P-members approved the new proposal (22F/101/RVN) and therefore IEC/PAS 61975 Ed. 1, "System tests for high-voltage direct current (HVDC) installations" (Pre-Standard) was published in August, 2004. According to Administrative Circular AC/67/1999 "Procedures of the development of PASs (Publicly available specifications)" the decision on the further development of IEC/PAS 61975 Ed. 1 should be taken at the current SC 22F meeting. 5. At the last SC 22F meeting in Montreal it was decided to begin the procedure of issuing double-logo IEC/CIGRE Publicly Available Specifications (PASs) based on CIGRE B4 WG 14-28 and 14-31 Reports on Filtering for HVDC and FACTS. Therefore New Work Item Proposal on IEC/CIGRE PAS "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" was prepared and circulated (22F/97/NP). Positive comments were received from SB1 members (22F/97A/NP). The majority of P-members approved the new proposal (22F/102/RVN) and IEC/PAS 62001 Ed. 1, "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" was published in July, 2004. According to Administrative Circular AC/67/1999 "Procedures of the development of PASs (Publicly available specifications)" the decision on the further development of IEC/PAS 62002 Ed. 1 should be taken at SC 22F meeting in Fontenay-aux-Roses. 6. The decision was taken at SC 22F meeting in Montreal to contact the IEC National Committees requesting the possibility of presenting existing national standards on power electronics in distribution systems as a base for IEC International standards. Mr. L. Travin sent the corresponding letters to all NCs – SC 22F P-members but got answers only from the IEC NCs of Germany and Sweden without any proposals. 7. Mr. L. Travin also had some discussions on cooperation with officers of IEEE-PES SC I0 and CIGRE SC B4 by correspondence. After some discussion Mr. L. Travin’s report was approved. Decision: To approve Mr. L. Travin’s report on the progress made since the last SC 22F meeting.

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7. REPORT ON THE WORK OF MAINTENANCE TEAM 11 "IEC 60919-1 ED.2: PERFORMANCE OF HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE COMMUTATED CONVERTERS"

Mr. Brian T Barrett, the new convenor of MT11, made a report on the work of SC22F/MT11. The work on IEC 60919-2, Ed.2, practically has not yet begun. Mr. L. Travin noted that as the UK IEC National Committee nominated Mr. Brian T Barrett as the convenor of MT11 on 2004-02-10 and SC 22F secretariat sent all the necessary information to him the MT11 could begin the work in May 2004. He proposed to put IEC 60919-2, Ed.2, Technical Report, “Performance of high-voltage d.c. (HVDC) systems with line commutated converters - Part 2: Faults and switching” into the Programme of Work (PW) of SC 22F with the following target dates: Beginning of work: May 2004 Committee Draft (CD): June 2005 CD circulation August 2005 CD discussion at SC22F meeting October 2005 Committee Draft for Voting (CDV) December 2005 CDV circulation January 2006 CDV voting July 2006 CDV discussion at SC 22F meeting September 2006 Publication of Technical Report December 2006 Mr. M. Lalander considered that as the work of MT 11 did not begin in September 2004 there was not enough time for MT 11 to prepare a Committee Draft by May 2005. After discussion it was agreed to state target dates for the work of MT11 on IEC 60919-2, Ed.2, Technical Report, “Performance of high-voltage d.c. (HVDC) systems with line commutated converters - Part 2: Faults and switching” later during the discussion of the Programme of Work of SC 22F. As to IEC 60919-3, Ed. 2, Technical Report, "Performance of high-voltage direct current (HVDC) systems with line commutated converters - Part 3: Dynamic conditions" it was proposed by Mr. L. Travin to state the following target dates: to begin the revision of the first edition in December 2006 and to publish the second edition in December 2008. It was also decided to leave it for the later discussion. It was noted that as at present the membership of WGs and MTs was determined only by IEC National Committees (P-members of SC 22F) and could be changed without any consultation with TC/SC officers it would be useful to contact SC 22F P-members and to check it out whether the membership of MT11 and MT 9 remained intact. Decision: Mr. L. Travin is to contact the respective National Committees to confirm the membership of MT11 (22F/77/MT, 22F/99/MT) and MT 9 and to inform their convenors on the results of the request. 8. DISCUSSION OF COMMENTS ON IEC 60919-1 ED.2 "PERFORMANCE OF HIGH-

VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE COMMUTATED CONVERTERS - PART 1: STEADY-STATE CONDITIONS – SECOND EDITION"– Documents 22F/95A/CDV, 22F/104/RVC

Comments of the IEC National Committees on IEC 60919-1, Ed.2: “Performance of line commutated converter high-voltage direct current (HVDC) systems – Part 1: Steady-state conditions” (document 22F/95A/CDV) presented in document 22F/104/RVC, Annex B, were discussed at SC 22F meeting. It was decided to accept the following changes in 22F/95A/CDV: Page 26, Subclause 10.2.2, a) – f): Page 26, Subclause 10.3.1, a) – d): Page 27, Subclause 10.3.2, a) – h): Delete the inappropriate spaces. Page 32, Subclause 12.2.1, b): Change the unit of delta from “0” to “o” (which means “degree”) in the 4th line of b). Page 37, Subclause 13.7, a) – g): Page 37, Subclause 13.8, a) – f): Delete the inappropriate spaces. Page 59, Figure 2: Add key “1 DC reactor”.

22F/108/RM 6

Page 70, Figure 13: Show numbers 6 to 8 in the figure at the appropriate positions. Keys 4 and 5 in the figure should be “DC switches” and “DC bus” respectively. Page 71, Figure 14: Key 3 should be “DC switches”. Page 59, Figure 2: Page 60, Figure 3: Page 63, Figure 6: Page 64, Figure 7: Page 67, Figure 10: Page 68, Figure 11: Page 70, Figure 13: Page 79, Figure 22: Correct the direction of the gates at thyristor symbols. Page 63, Figure 6: Page 64, Figure 7: Page 66, Figure 9: Page 67, Figure 10: Page 68, Figure 11: Page 72, Figure 15: Page 76, Figure 19: Draw the consistent symbols for filters in all these figures (letter F in a box). After discussion it was decided unanimously to insert the accepted changes into 22F/95A/CDV and to send it to the IEC Central Office for publication as a Technical Report. Decision: SC 22F secretariat is to put the accepted changes into 22F/95A/CDV and to send it to the IEC Central Office for publication as IEC 60919-1, Ed.2, Technical Report: “Performance of line commutated converter high-voltage direct current (HVDC) systems – Part 1: Steady-state conditions”. 9. REPORT ON THE WORK OF A NEW WORKING GROUP 12 AND DISCUSSION OF

COMMENTS ON IEC 61973 ED.1 "HIGH VOLTAGE DIRECT CURRENT (HVDC) SUBSTATION AUDIBLE NOISE" – Documents 22F/91/NP, 22F/100/RVN

Working Group 12 was formed in the end of May, 2004, to prepare a Committee Draft on IEC 61973 Ed.1 "High voltage direct current (HVDC) substation audible noise". The membership of WG 12: Mr. Piotr Konrad Login, the convenor (ABB Power Technologies AB, Sweden), Mr. Armin Moosburger (Siemens AG, Germany), Mr. Yukiyasu Shirasaka (Japan AE Power Systems Corporation, Japan) and Mr. Chan-Ki Kim (Korea Electric Power Research Institute (KEPRI), Korea (Rep. of)). No report has been received from Mr. Piotr K. Login yet. Taking into account that SC 22F secretariat was informed by the IEC Central Office on 2004-07-30 that the IEC National Committee of Japan deleted Mr. Y. Shirasaka from SC 22F WG 12 without any consultations with SC 22F and without proposing any other expert instead Mr. Y. Shirasaka, WG 12 was not able to begin its work due to lack of experts. It took a month for SC 22F secretary to convince the Japanese National Committee to change its decision and to restore Mr. Y. Shirasaka in SC 22F WG 12. Decision: Mr. M. Lalander is to immediately inform Mr. Piotr K. Login, WG 12 convenor, that the work of WG 12 should be started as soon as possible. 10. DECISION ON THE FURTHER DEVELOPMENT OF IEC/PAS 61975 ED. 1 "SYSTEM

TESTS FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) INSTALLATIONS" – Documents 22F/96/NP, 22F/96A/NP, 22F/101/RVN

Document 22F/96/NP had been circulated on 2004-01-30 with a closing date for voting 2004-04-30. 7 P-members (70%) voted in favour (China, France, India, Italy, Korea (Rep.of), Russian Federation, Spain) and three P-members (Germany, Japan, UK) voted against this new proposal (see 22F/101/RVN). New proposal was also approved by SB1 members (22F/96A/NP). So the decision to publish a double-logo IEC/CIGRE PAS 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" was approved and it was published in August 2004.

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22F/108/RM 7

According to Administrative Circular AC/67/1999 “Procedures for the development of PASs (Publicly Available Specifications)” if a document is accepted as an IEC-PAS, it will at the same time be automatically included in the Programme of Work of the committee concerned, with a view to transforming the IEC-PAS into a normal International Standard. The committee will decide on the most appropriate route for the document to follow (CD-CDV-FDIS, Fast-track IS or TR). According to Administrative Circular 149/AC (2000-10-11) the concept of internal PAS has been introduced. The Committee of Action agreed to a trial period of three years for internal PASs as Pre Standards. IEC/CIGRE PAS 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" has been included by the IEC Central Office into the Programme of Work of SC 22F with the initial stage date June 2004, next stage (CD) target date December 2005 and Requested publication stage date September 2008. After discussion the following decision was taken: Decision: Mr. L. Travin is to circulate a letter to P-members requesting to nominate members and the convenor for a new Working Group to develop new International Standard IEC 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" by CD-CDV-FDIS procedure taking into account the above target dates. 11. DECISION ON THE FURTHER DEVELOPMENT OF IEC/PAS 62001 ED. 1 "GUIDE TO

THE SPECIFICATION AND DESIGN EVALUATION OF AC FILTERS FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS" – Documents 22F/97/NP, 22F/97A/NP, 22F/102/RVN

Document 22F/97/NP had been circulated on 2004-01-30 with a closing date for voting 2004-04-30. 7 P-members (77,8%) voted in favour (China, France, Italy, Japan, Korea (Rep.of), Russian Federation, Spain) and two P-members (Germany, UK) voted against this new proposal (see 22F/102/RVN). New proposal was also approved by SB1 members (22F/97A/NP). One expert from Japan was nominated (Mr. Junichi Arai, TMT and D Corporation). So the decision to publish a double-logo IEC/CIGRE PAS "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" has been approved and it was published in July 2004. According to Administrative Circular AC/67/1999 “Procedures for the development of PASs (Publicly Available Specifications)” if a document is accepted as an IEC-PAS, it will at the same time be automatically included in the Programme of Work of the committee concerned, with a view to transforming the IEC-PAS into a normal International Standard. The committee will decide on the most appropriate route for the document to follow (CD-CDV-FDIS, Fast-track IS or TR). According to Administrative Circular 149/AC (2000-10-11) the concept of internal PAS has been introduced. The Committee of Action agreed to a trial period of three years for internal PASs as Pre Standards. IEC/CIGRE PAS 62001 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" has been included by the IEC Central Office into the Programme of Work of SC 22F with the initial stage date June 2004, next stage (CD) target date December 2005 and Requested publication stage date September 2008. After discussion the following decision was taken: Decision: Mr. L. Travin is to circulate a letter to P-members requesting to nominate members and the convenor for a new Working Group to develop new International Standard IEC 62001 Ed. 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" by CD-CDV-FDIS procedure taking into account the above target dates. 12. DISCUSSION OF THE EXPEDIENCY OF THE FURTHER WORK ON DOCUMENT

"GENERAL GUIDELINES FOR THE DESIGN OF GROUND ELECTRODES FOR HVDC LINKS" – Document 22F/92/NP

Document 22F/92/NP had been re-circulated on 2004-01-30 with a closing date for voting 2004-04-30. 7 P-members (87,5%) voted in favour (China, Germany, Italy, Korea (Rep.of), Russian Federation, Spain, Sweden) and one P-member (UK) voted against this new proposal. Mr. D. Karlsson (Sweden) was proposed as the convenor of the future WG, and two experts - Mr Hartmut Huang (Germany) and Mr. Chan-Ki Kim (Korea, Rep. of) were also nominated. However the document was again rejected due to the lack of experts nominated by the IEC National Committees. Taking into account the considerable interest of the SC 22F P-members in this item, after some discussion the following decision was taken: Decision: To begin the procedure of issuing a new double-logo IEC/CIGRE PAS "General guidelines for the design of ground and sea electrodes for HVDC links" by circulating a corresponding New Work Item Proposal based

22F/108/RM 8

on CIGRE WG 14-21 Guide (target date April 2005). If the proposal is agreed by SC 22F P-members and PAS is published SC 22F secretary is to circulate a letter to SC 22F P-members asking for experts for a new Working Group. 13. INFORMATION ON THE WORK DONE AT JWG TC33/SC22F ON IEC 60143-4 “SERIES

CAPACITORS FOR POWER SYSTEMS – PART 4: THYRISTOR CONTROLLED SERIES CAPACITORS” – Document 33/405/NP

Report on the work of Joint Working Group TC33/SC22F IEC 60143-4, Ed. 1.0, “Series capacitors for power systems - Part 4: Thyristor Controlled Series Capacitors" has been planned at SC 22F meeting in Fontenay-aux-Roses. However Mr. J. Samuelsson, the convenor of JWG TC33/SC22F, was not able to attend SC 22F meeting and Mr. L. Travin has not received a report from him but only some preliminary information that it was not possible for the JWG to produce a CD on IEC 60143-4 yet, additional time was needed. After discussion the following decisions were taken: Decision: Mr. L. Travin is to request a CD on IEC 60143-4 from Mr. J. Samuelsson after it is finished by JWG TC33/SC22F, circulate it between SC 22F P-members, get their comments and send them to TC 33 so that these comments will be taken into account by TC 33. 14. DISCUSSION OF THE LIAISON BETWEEN IEC SC 22F, IEEE-PES HIGH-VOLTAGE

POWER ELECTRONICS STATIONS SUBCOMMITTEE (IEEE I0) AND CIGRE B4 "HVDC AND POWER ELECTRONICS"

14.1. Cooperation between IEEE-PES SC I0 and IEC SC 22F Mr. Hubert Bilodeau, the chairman of the IEEE-PES High-Voltage Power Electronics Stations Subcommittee (SC i0), and Mr. L. Travin discussed by correspondence possible cooperation in the replacement of IEEE 1158-1991 with IEC 61803, Ed.1 "Determination of power losses in high-voltage direct current (HVDC) converter stations" and the harmonization of IEEE 857-1996 with IEC 60700-1, Ed. 1:1998, "Thyristor valves for high-voltage direct current (HVDC) power transmission - Part 1: Electrical testing - Amendment 1(2003-02)". Mr. Hubert Bilodeau gave the following information to Mr. L. Travin:

"1 - Standard IEEE 1158 on Determination of Power Losses was withdrawn in 2001. As a consequence, standard IEC 61803 Ed. 1 is the unique international standard presently in force. In the mean time, IEEE SC i0 is pursuing with IEEE whether a formal acceptance of IEC 61803 is required. SC i0 will inform SC 22F accordingly.

2 - Standard IEEE 857. Since the last IEC meeting in Montreal, Sc i0 met once in New Orleans in April, 2004. A task force

has been created under the leadership of Dr. Karady and working group i1 to analyze IEC 60700-1, Am. 1. The team of experts received the mandate to provide technically substantiated comments for the justification of necessary changes to the present standard. Hopefully, one of these experts will be attending the next SC 22F meeting in September.

3 - Future cooperation Future cooperation could operate in two ways. For instance, SC 22F could directly mandate IEEE

SC i0 to investigate some specific technical aspects and submit a technical report in view of future standarization. Alternatively, SC i0 could give SC 22F the right to use technical reports already published by IEEE.

For your information SC i0 is about to publish two technical reports. The first one from TF2 of WG i8 is on the concept of "Power Electronics Building Block (PEBB)" which is a generic strategic concept incorporating several technology aspects which have been foreseen as key to major reduction in cost, losses, size and weight of power electronics. The Scope of this document relates to application of power electronics building blocks in the areas of Power Quality/Custom Power, FACTS, HVDC, Distributed Generation, Storage applications, with a power range from hundreds of kW to thousands of MW, but with emphasis on the 1 MW to hundreds of MW. This document conveys various concepts and useful ideas to advance the technology.

The second report is on "Voltage-Sourced Converter application in Power Transmission". This report should be ready for publication by the end of this year. Many technical aspects have been developed and standardized for conventional HVDC application and current-sourced converters, aspects such as valve testing, commissioning, losses etc. The technology is yet not well implemented but and there are still a lot of opened-issues related to these new types of converters which remained to be covered." Decision: SC 22F delegates should prepare and send to Mr. L. Travin by May 2005 their proposals on possible investigations which IEEE SC I0 could make for IEC/SC 2F.

22F/108/RM 9

14.2. CIGRE SC B4 – IEC SC 22F cooperation. Mr. M. Lalander, the chairman of IEC/SC 22F, Mr. L. Travin, the secretary of IEC/SC 22F, and Mr. P. Lips, Germany, attended CIGRE SC B4 meetings in Paris on September 1 and 2, 2004, during the 40th CIGRE General Session. At CIGRE SC B4 meeting Mr. L. Travin made a report on the work of SC 22F in 2003-2004. He noted that the results of cooperation between CIGRE SC B4 and IEC SC 22F showed that both subcommittees had the same goals and helped each other considerably in their work. IEC SC 22F gets scientific and technical support from CIGRE SC B4 for the development of International Standards on power electronics in electrical transmission and distribution systems. From the other side when such an IEC International Standard has been prepared by IEC SC 22F and published, it helps the public in general and those who take decisions on the ways of power system development to better understand and agree with CIGRE SC B4 approach. According to the Liaison General Agreement between CIGRE and IEC the members and experts of any side may use other side’s publications, attend other side’s meetings and take part in the work of other side’s Working Groups. So there is a great potential in CIGRE SC B4/IEC SC 22F cooperation. Mr L. Travin suggested that the following measures should be taken which could considerably increase the efficiency of IEC SC 22F/CIGRE SC B4 cooperation:

- CIGRE SC B4 members/experts who participated in the development of a CIGRE Report, could take part in the work of IEC SC 22F Working Group which is developing the IEC International Standard based on this CIGRE Report; - CIGRE SC B4 and IEC SC 22F should have the permanent communication link between their secretaries for the quick exchange of reports, drafts, comments and other working materials and final publications.

CIGRE SC B4 members expressed general agreement with these proposals and Dr.-Ing. Hartmut Huang, Director System Engineering, HVDC Systems, Siemens AG, Germany, was nominated as the Liaison Member in IEC/SC 22F from CIGRE SC B4. Concerning IEC/SC 22F request to prepare a technical base for the development of a new International Standard on Testing of voltage source converters for HVDC power transmission, Dr. B. Andersen (UK), the convenor of CIGRE WG B4-37, noted that it would be premature at present to develop such an International Standard due to the lack of operation experience. CIGRE SC B4 members agreed with him. Last CIGRE Brochures prepared by CIGRE SC B4 and published in 2002-2004 as well as CIGRE SC B4 Reports presented at B4 meeting in Paris, September 1-2, 2004, were discussed at IEC/SC 22F meeting in Fontenay-aux-Roses. Mr. L. Travin proposed to consider the advisability of issuing the following CIGRE SC B4 publications as double-logo IEC/CIGRE PASs: - Active filters in HVDC applications, Ref. No 223, CIGRE 14-28, 2003; - Static synchronous compensator (STATCOM) for arc furnace and flicker compensation, Ref. No 237, CIGRE B4-19, 2003; - Thyristor controlled voltage regulators, Ref. No. 242, CIGRE B4-35, 2004. A long discussion followed. Mr. L. Travin insisted on reading and discussing the above CIGRE publications before taking decision on their proposing as IEC/CIGRE PASs. Mr. M. Lalander noted that the market value of such PASs was rather low if they were published. In his opinion active filters in HVDC applications were very seldom used and the publication on thyristor controlled voltage regulators was mostly educational. Mr. P. Lips noted that STATCOMs for arc furnace and flicker application might be outside scope of SC 22F as they served not for transmitting and distributing power but mostly for providing a high quality of electric power near arc furnaces. Mr. M. Lalander said that it would be useful to have information on the market value of publications developed by SC 22F (number of SC 22F publications sold) as a guidance for the future work of SC 22F. After discussion it was decided: Decisions: 1. Mr. L. Travin is to maintain the permanent communication link with Prof. W.F. Long, the secretary of CIGRE SC B4, and Dr.-Ing. H. Huang, the CIGRE SC B4 Liaison Member in IEC/SC 22F, to exchange reports, drafts, comments and other working materials and final publications between IEC/SC 22F and CIGRE SC B4. 2. To refrain from proposing new IEC/CIGRE PASs for the time being until the guidance on market values of the issued IEC SC 22F publications is received and discussed. 3. Mr. L. Travin is to request information from the IEC Central Office on the market demand for the published SC 22F standards, technical reports and PASs.

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15 UPDATE THE PROGRAM OF WORK OF TC/SC 22F AS RECORDED BY IEC CENTRAL OFFICE – Document 22F/106/PW

All the projects of the SC22F Programme of Work have been discussed and the following changes were approved and put into the Programme of Work for SC 22F as recorded by the IEC Central Office in its database on 2004-07-28 (see 22F/106/PW): 1. IEC 60919-1 Ed.2.0: Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions:

1) Document reference is 22F/95A/CDV but not 22F/95/CDV. 2) Title of the project was changed (words "line commutated converter" were deleted and words "with

line commutated converters" were inserted after the word "systems") at SC 22F meeting in Montreal in October 2003 (see 22F/90/RM, Item VII).

3) Technical Report IEC 60919-1, Ed.2.0 will be published (PPUB stage) in December, 2004, after 22F/95A/CDV and comments are discussed at the current SC 22F meeting in Fontenay-aux-Roses, France, on the 6th and 7th September, 2004. A year delay of the publication of IEC 60919-1 Ed.2.0 is explained by the fact that the UK IEC National Committee had changed the convenor of SC 22F MT 11 twice during period of October 2001 – February 2004.

4) Mr. B.T. Barrett, the new project leader of MT11, was nominated by the UK IEC National Committee on 2004-02-10. His name should be put into the PoW instead of Mr. B.R. Andersen's. 2. IEC 60919-2 Ed.2.0: Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching should be included into the Programme of Work for SC 22F MT 11 (convenor Mr. B.T. Barrett) as ANW with the Initial and Current Stages 2004-09, the Next Stage 2005-12 and R. Pub. Stage 2007-06. These target dates were proposed by Mr. M. Lalander who considered that as the work of MT 11 did not begin in September 2004 there was not enough time for MT 11 to prepare a Committee Draft by 2005-06. Therefore target dates should be chosen so as to provide the necessary quality of the future revised Technical Report IEC 60919-2 Ed.2.0. 3. IEC 61973 Ed.1.0: High voltage direct current (HVDC) substation audible noise: Mr. M. Lalander proposed to change the Next Stage date to 2005-12 instead of 2005-06 due to the fact that the IEC National Committee of Japan had deleted Mr. Y. Shirasaka from SC 22F WG 12 without any consultations with SC 22F and without proposing any other expert instead him. Therefore WG 12 had not been able to begin its work due to lack of experts till September 2004. This proposal was approved. 4. IEC 62001 Ed.1.0 (based on the Result of voting on 22F/97/NP: IEC/PAS 62001 Ed.1: Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems): It was decided to state R. Pub. Stage as 2008-09 like that of IEC 61975 Ed.1.0. 5. PNW 22F-92 General guidelines for the design of ground electrodes for HVDC links should be deleted from the Programme of Work for SC 22F as NWIP 22F/92/NP was rejected due to the lack of nominated experts. 6. PWI-22F-1 HVDC substation audible noise should be deleted from the Programme of Work for SC 22F as it was replaced by project IEC 61973 Ed.1.0. 7. PWI-22F-2 HVDC ground return and sea electrode design should be deleted from the Programme of Work for SC 22F as it was replaced by PNW 22F-92 Ed.1.0 and then rejected due to the lack of nominated experts). 8. PWI-22F-3 Testing of voltage source converters:

1) The title of the project was changed (words "Testing of" had been added in the beginning of the title) at SC 22F meeting in Stockholm, Sweden, on 21st September, 2000 (see 22F/74/RM, Item XII).

2) The project is planned to be based on a future CIGRE or IEEE report. Updated Programme of Work for SC 22F is given in Annex A. Decision: To approve the updated Programme of work of SC 22F as it is given in Annex A.

16 UPDATE THE STRATEGIC POLICY STATEMENT OF SC 22F

22F/108/RM 11

The changes to the existing SPS of SC 22F were proposed, discussed and agreed: A. Background: Projects in development: To add the following items: "2. WG 12 has begun the development of IEC 61973, Ed. 1, “High voltage direct current (HVDC) substation audible noise”. 3. There are 3 new projects (2 ANW and 1 PWI stages): - ANW: IEC/PAS 61975 Ed.1: System tests for high-voltage direct current (HVDC) installations; - ANW: IEC/PAS 62001 Ed.1: Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems; - PWI 22F-3 Ed.1.0: Testing of voltage source converters." B. Environment: B.1 Business environment To change the total capacity of commissioned HVDC projects from 56000 to 60000 MW and that of the planned HVDC projects from 29000 to 30000 MW. B. Environment: B.2 Market demand To change item 3 in the following way: "3. There is one competing standard which is nationally used: IEEE 857-1996 Its replacement by IEC 60700-1(1998) is desirable." C. Work programme: Current work: - Under subclause SC 22F insert the following text: " Meeting in London in September 2006 together with the IEC General Assembly (if possible). MT11 and WG12 meetings at the discretion of the respective convenors and/or work by correspondence." - To add the following items in subclause Current work:

• "Revision of IEC 60919 IEC 60919-2, Ed. 1 (Technical Report) "Performance of high-voltage direct current (HVDC) systems - Part 2: Faults and switching".

• Development of IEC 61973, Ed, 1 "High voltage direct current (HVDC) substation audible noise". (based on the CIGRE WG B4.26 Report);

• Further development of IEC PAS Pre-standard 61975, Ed, 1 "System Tests for HVDC Installations" (based on CIGRE WG B4-12);

• Further development of IEC PAS Pre-standard 62001, Ed, 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" (based on CIGRE WG B4-30)".

D. Future work To insert words "or IEEE" after word "CIGRE" in brackets of the last sentence. E. Maintenance cycle: - IEC 60919-3, Ed. 1: Change Review date to 2007-07-01 and Maintenance result date to 2009-06-30. - To insert the following lines in the table:

Publication no. Date of publication Review date Maintenance result date

Responsibility (Maintenance Team)

IEC 60700-1, Ed. 1, Am. 1 IEC 61954, Ed. 1, Am. 1

2003-04-01 2003-04-01

2005-12-30 2007-12-30

2008-04-01 2010-04-01

MT 9 MT 10

The updated SPS is given in Annex B. Decision: To approve the updated SPS of SC 22F as it is given in Annex B.

17 PROPOSALS FOR FUTURE WORK.

There was a long discussion of the future work needed by industry and market. Mr. L.Travin proposed to begin standardizing sets of ratings (limiting values) and characteristics of thyristor valves for HVDC systems with line commutated converters fully describing this most important component of HVDC converters and permitting the comparison and choice between thyristor valves produced by different manufacturers. The standardization of ratings (limiting values) and characteristics of thyristor valves for HVDC systems as well as methods of ratings testing and measurement of characteristics provides the creation of market of thyristor valves as components of HVDC converters. He noted that practically all other components of the converters but thyristor valves (thyristors, capacitors, reactors, resistors, converter transformers, filter capacitors and reactors etc) had International Standards on their ratings and characteristics and therefore could be chosen and got at the international market. As an example he reminded the concept of "Power Electronics Building Block (PEBB)" developed by IEEE I0 as key to major reduction in cost, losses, size and weight of power electronics. However Mr. L. Travin's proposal was opposed by all the delegates present.

22F/108/RM 12

Mr. M. Lalander proposed to continue attempts to develop an International Standard on the prevention of fire at HVDC substations by asking IEEE I0 to develop it on the base of the existing NFPA standard/guide/recommended practice. Mr. P. Lips raised a question of possible future work on standardizing HVDC system voltages above +/-600 kV as an aim for the future HVDC projects providing the reduction of design costs for different manufacturers. Mr. M. Lalander noted that this problem was not in the scope of SC 22F and that TC 8 probably wanted to start this work. The delegates also considered the comparison of terms and definitions used in IEC 60633 Ed.2 “Terminology for high-voltage direct current (HVDC) transmission” and in the International Electrotechnical Vocabulary (IEC 60050, Part 551: Power Electronics) prepared by Mr. L. Travin, to decide whether the amendments in IEC 60633 Ed.2 were necessary and should be done in the nearest future. The comments should be prepared for the next SC 22F meeting. This document can be an input for the future MT on IEC 60633, Ed. 2: 1998,Terminology for high-voltage direct current (HVDC) transmission. Mr. Michael Weinhold noted that CIGRE SC B4-39 was preparing Guidelines on integration of the windfarm generation which could be ready in two years and could be used for the future work of SC 22F. The following decisions were taken: Decisions: 1. Mr. L. Travin is to ask Mr. Hubert Bilodeau, the chairman of the IEEE-PES High-Voltage Power Electronics Stations Subcommittee (SC i0), to contact the NFPA and to develop the International Standard for IEC SC 22F on the base of the existing NFPA standard/guide/recommended practice. 2. Mr. L. Travin should request electronic versions of the IEEE SC I0 reports mentioned in Item 14.1 on the application of voltage source converters for power transmission and Power Electronics Building Blocks (PEBB) from Mr. H. Bilodeau and send them to SC 22F members for the discussion at the next IEC/SC 22F meeting to consider whether they could be issued as double-logo IEC/IEEE PASs. 3. Mr. L. Travin is to circulate information document on the comparison of terms and definitions used in IEC 60633 Ed.2 “Terminology for high-voltage direct current (HVDC) transmission” and in the International Electrotechnical Vocabulary (IEC 60050, Part 551: Power Electronics) to P-members with the request to comment on the possible necessity of amendments in IEC 60633 Ed.2. 4. It should be noted that CIGRE SC B4-39 was preparing Guidelines on integration of windfarm generation which could be ready in two years and could be used for the future work of SC 22F.

18 ANY OTHER BUSINESS. There was no other business.

19 DATE AND PLACE OF THE NEXT MEETING. Mr. M. Lalander noted that the next TC 22 meeting with its subcommittees would be held in Rosslin, USA, on September 12 - 16, 2005, but there would be not enough SC 22F documents to discuss at that time. It was decided that Mr. L. Travin is to contact the UK IEC National Committee with the request to host SC 22F meeting in London in September 2006 together with the IEC General Meeting.

20 CLOSE OF THE MEETING.

Mr. M. Lalander, the chairman of SC 22F, thanked the French IEC National Committee for the excellent organization of SC 22F meeting in Fontenay-aux-Roses. He also thank the delegates for their constructive work and closed the meeting.

---------------------- NOTE: The list of all decisions made by SC 22F during its meeting in Fontenay-aux-Roses is given in Annex C.

13

Annex A

UPDATED PROGRAMME OF WORK FOR TC/SC 22F

2004-09-07 17:00 IEC CENTRAL OFFICE - PROGRAMME OF WORK FOR TC/SC 22F Document Current Next PPUB R.Pub Project Project Stage Reference Init Stage Stage Mod Stage Stage Leader IEC 60919-1 Ed.2.0 CDVM 22F/95A/CDV 00-10 04-07 04-10 0 04-12 03-12 Mr. B.T. Barrett Type: A1 WG(s): MT 11 Title: Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions ____________________________________________________________________________________________________________________________________________________ IEC 60919-2 Ed.2.0 ANW 04-09 04-09 05-12 0 07-06 Mr. B.T. Barrett Type: A1 WG(s): MT 11 Title: Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching ____________________________________________________________________________________________________________________________________________________ IEC 61973 Ed.1.0 ANW 22F/91/NP 04-09 04-09 05-12 0 07-12 Mr. P.K. Login Type: D2 WG(s): WG 12 Title: High voltage direct current (HVDC) substation audible noise ____________________________________________________________________________________________________________________________________________________ IEC 61975 Ed.1.0 ANW 04-06 04-06 05-12 0 08-09 Type: A1 WG(s): Title: Result of voting on 22F/96/NP: IEC/PAS 61975 Ed.1: System tests for high-voltage direct current (HVDC) installations (and Futur IEC 61975 Ed.1) _____________________________________________________________________________________________________________________________________________________ IEC 62001 Ed.1.0 ANW 04-06 04-06 05-12 0 08-09 Type: A1 WG(s): Title: Result of voting on 22F/97/NP: IEC/PAS 62001 Ed.1: Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems (and Futur IEC 62001 Ed.1) ____________________________________________________________________________________________________________________________________________________

22F/108/RM 14

Annex B

STRATEGIC POLICY STATEMENT

IEC/TC or SC

Secretariat

Date

Please ensure this form is annexed to the Report to the Standardization Management Board if it has been prepared during a meeting, or sent to the Central Office promptly after its contents have been agreed by the committee. Title of TC A. Background Scope: SC 22F – Power Electronics for Electrical Transmission and Distribution Systems To prepare international standards regarding electronic power conversion and/or semiconductor switching equipment and systems and their application to electrical transmission and distribution systems, including the means for their control, protection and monitoring. Typical examples are converters for high-voltage d.c. (HVDC), static VAR compensators (SVC), controlled series capacitors (CSC), as well as other applications where power electronics and semiconductors are used, e.g., phase shifters and active filters. Working Groups: JWG TC 33/SC 22F: Thyristor controlled series capacitors (future IEC 60143 - 4, Ed. 1); WG12: High voltage direct current (HVDC) substation audible noise (future IEC 61973, Ed. 1). Maintenance Teams: MT 9: Maintenance Team for IEC 60700-1 MT10: Maintenance Team for IEC 61954 MT11: Maintenance Team for IEC 60919 History SC 22F – Power Electronics for Electrical Transmission and Distribution Systems SC 22F was set up by TC 22 in 1970 to take over the work of Preparatory Working Group 5 of TC 22 dealing with converters for high-voltage d.c. power transmission. Participating Countries – (13):

Observer countries - (17):

China France Germany India Italy Japan Korea (Rep. of)

Portugal Russian Federation Spain Sweden Switzerland United Kingdom

Australia Belgium Bulgaria Croatia Czech Republic Denmark Finland Hungary Malaysia

Netherlands New Zealand Norway Poland Romania Serbia and Montenegro Singapore Ukraine

Liaison: IEC/TC33 CIGRE SC B4 (type A) CENELEC TC22X IEEE PES I0 (type D) IEC/TC98

22F/108/RM 15

Publications issued by SC 22F: IEC 60633, Ed. 2: 1998,Terminology for high-voltage direct current (HVDC) transmission IEC 60919-1:1988, TR2, Performance of high-voltage d.c. (HVDC) systems - Part 1: Steady-state conditions IEC 60919-2:1991, TR2, Performance of high-voltage d.c. (HVDC) systems - Part 2: Faults and switching IEC 60919-3:1999, TR2, Performance of high-voltage d.c. (HVDC) systems - Part 3: Dynamic conditions IEC 60700-1, Ed. 1:1998, Thyristor valves for high-voltage direct current (HVDC) power transmission - Part 1: Electrical testing IEC 60700-1, Ed. 1:1998, Thyristor valves for high-voltage direct current (HVDC) power transmission - Part 1: Electrical testing - Amendment 1(2003-02) IEC 61803, Ed. 1:1999, Determination of power losses in high-voltage direct current (HVDC) converter stations IEC 61954, Ed. 1:1999, Testing of thyristor valves for static VAR compensators IEC 61954, Ed. 1:1999, Testing of thyristor valves for static VAR compensators - - Amendment 1(2003-02) Projects in development: 1. Maintenance work is being carried out on 1 publication (IEC 60919-2:1991, TR2, Performance of high-voltage d.c. (HVDC) systems - Part 2: Faults and switching) by MT 11. 2. WG 12 has begun the development of IEC 61973, Ed. 1, “High voltage direct current (HVDC) substation audible noise”. 3. There are 3 new projects (2 ANW and 1 PWI stages): - ANW: IEC/PAS 61975 Ed.1: System tests for high-voltage direct current (HVDC) installations; - ANW: IEC/PAS 62001 Ed.1: Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems; - PWI 22F-3 Ed.1.0: Testing of voltage source converters. B. Environment B.1 Business environment The development of power semiconductor devices and new conversion techniques resulted in thedevelopment and rapidly growing use of power electronic equipment in electrical transmission anddistribution systems of many countries. This equipment includes various types such as:

a) Complete converter stations for HVDC power transmission systems b) Complete static VAR compensators (SVC) c) Various kinds of equipment for HVDC power transmission systems and static VAR compensators (thyristor valves, control, protection, monitoring and cooling systems, etc) d) Semiconductor switching equipment e) Controlled series capacitors (CSC) f) Phase shifters g) Active filters

Global market for power electronic equipment for electrical transmission and distribution systems isapproximately 1 billion US dollars per year with the growth of 10% per annum. There is a big variation fromone year to another, depending upon if some big projects are realized or not. Total capacity of commissioned HVDC projects only, exceeds 60000 MW. Some more HVDC projects withthe total capacity of about 30000 MW are planned to be commissioned by 2010. B.2 Market demand 1. The intention of SC 22F is to determine and satisfy the needs of manufacturers, suppliers and users of power electronics equipment for electrical transmission and distribution systems consistent withenvironmental aspects, i.e.: - researchers, designers and manufacturers of equipment seeking a set of harmonized requirements and recommendations - power system designers seeking to specify requirements for equipment - test engineers seeking standard methods of assessing, testing and approving equipment 2. Existing standards are widely used by designers, manufacturers and users of HVDC and SVC equipment. 3. There is one competing standard which is nationally used: IEEE 857-1996 Its replacement by IEC 60700-1(1998) is desirable. 4. The scope of SC 22F covers both areas of a relative stability such as conventional HVDC, where IEC International Standards are available and shall be maintained, but also rapidly developing areas such asvoltage source converters, semiconductor switching equipment, controlled series capacitors, phase shifters,active filters, etc, where new standards need to be developed. B.3 Trends in technology and trade Power electronics for electrical transmission and distribution systems is a rapidly developing field where newtechnologies, components and materials, aimed at higher reliability, better performance, increased efficiency,

22F/108/RM 16

operational flexibility and lower costs, are appearing. Future work will be necessary to keep pace with newand future technologies, components and materials. B.4 Ecological environment In general, power electronics have a huge potential to affect the ecological systems in a positive way. Theadvantage of power saving because of power electronics is supporting many initiatives of environmentprotection. Power electronics is the enabling technology for the utilization of regenerative energy sources and for the introduction of decentralized energy production. No toxic products are used in the production and use of power electronics. Presently ecological environment is addressed in IEC 61973, Ed. 1 “High voltage direct current (HVDC) substation audible noise”. C. Work programme Current work The current work includes the maintenance product standards and development of new product standards. For maintenance of standards SC 22F formed several Maintenance Groups. Work Program SC22F Meeting in London in September 2006 together with the IEC General Assembly (if possible). MT11 and WG12 meetings at the discretion of the respective convenors and/or work by correspondence. Current work

• Revision of IEC 60919 IEC 60919-1, Ed. 1 (Technical Report) "Performance of high-voltage direct current (HVDC) systems - Part 1: Steady-state conditions".

• Revision of IEC 60919 IEC 60919-2, Ed. 1 (Technical Report) "Performance of high-voltage direct current (HVDC) systems - Part 2: Faults and switching".

• Development of IEC 61973, Ed, 1 "High voltage direct current (HVDC) substation audible noise". (based on the CIGRE WG B4.26 Report);

• Further development of IEC PAS Pre-standard 61975, Ed, 1 "System Tests for HVDC Installations" (based on CIGRE WG B4-12);

• Further development of IEC PAS Pre-standard 62001, Ed, 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" (based on CIGRE WG B4-30).

C.2 Resources/infrastructure needed It is desirable that the balance between manufacturers, researchers and utilities be improved in SC 22F. D. Future work

• Revision of IEC 60919 IEC 60919-3, Ed. 1 (Technical Specification) "Performance of high-voltage direct current (HVDC) systems - Part 3: Dynamic conditions".

• Testing of voltage source converters (possibly based on the future CIGRE or IEEE document).

E. Maintenance cycle Publication no. Date of publication Review date Maintenance result

date Responsibility (Maintenance

Team) IEC 60633, Ed. 2 IEC 60700-1, Ed. 1, Am. 1 IEC 60919-3, Ed. 1 IEC 61803, Ed. 1 IEC 61954, Ed. 1, Am. 1

1998-12-21 2003-04-01 1998-12-30 1999-01-30 2003-04-01

2006-12-30 2005-12-30 2007-07-01 2006-01-30 2007-12-30

2009-12-30 2008-04-01 2009-06-30 2009-01-30 2010-04-01

MT 9 MT 11 MT … MT 10

Name or signature of the secretary

22F/108/RM 17

Annex C

List of all decisions made by SC 22F during its meeting in Fontenay-aux-Roses, France, on the 6th and 7th September, 2004

Item Project Number

Decision Responsible Target Date

1 - To let Mr. M. Lalander, the chairman of SC 22F, and Mr. L. Travin, the secretary of SC 22F, to act also as the national representatives at this SC 22F meeting.

3 - To approve 22F/105/DA as the Agenda of the current SC 22F meeting with the amendments made at the SC 22F meeting.

- -

4 - To approve the Minutes of SC 22F meeting in Montreal, Canada, on the 13th, 15th and 16th

October, 2003 (22F/90/RM) with the proposed corrections.

- -

6 - To approve a report from the secretary on the progress made since the last meeting

- -

7 IEC 60919-2, Ed.2

To contact the corresponding National Committees to confirm the membership of MT11 (22F/77/MT, 22F/99/MT) and MT 9 and to inform their convenors on the results of the request.

Mr. L. Travin 2004-11-30

8 IEC 60919-1 Ed.2

To put the accepted changes into 22F/95A/CDV and to send it to the IEC Central Office for publication as IEC 60919-1, Ed.2, Technical Report: “Performance of line commutated converter high-voltage direct current (HVDC) systems – Part 1: Steady-state conditions”.

Mr. L. Travin 2004-10-30

9 IEC 61973 Ed.1

To immediately inform Mr. Piotr K. Login, WG 12 convenor, that the work of WG 12 should be started as soon as possible.

Mr. M. Lalander 2004-09-15

10 IEC 61975 Ed. 1

To circulate a letter to P-members requesting the nomination of members and the convenor for a new Working Group to develop new International Standard IEC 61975 Ed. 1 "System tests for high-voltage direct current (HVDC) installations" by CD-CDV-FDIS procedure.

Mr. L. Travin 2005-01-30

11 IEC 62001 Ed. 1

To circulate a letter to P-members requesting the nomination of members and the convenor for a new Working Group to develop new International Standard IEC 62001 Ed. 1 "Guide to the specification and design evaluation of AC filters for high-voltage direct current (HVDC) systems" by CD-CDV-FDIS procedure.

Mr. L. Travin 2005-01-30

12 - To begin the procedure of issuing a new double-logo IEC/CIGRE PAS "General guidelines for the design of ground and sea electrodes for HVDC links" by circulating a corresponding New Work Item Proposal based on CIGRE WG 14-21 Guide (target date April 2005). If the proposal is agreed by SC 22F P-members and PAS is published SC 22F secretary is to circulate a letter to SC 22F P-members asking for experts for a new Working Group.

Mr. L. Travin

Mr. L. Travin

2005-02-30

2005-06-30

22F/108/RM 18

13 IEC 60143-4 Ed. 1

To request a CD on IEC 60143-4 from Mr. J. Samuelsson, the convenor of JWG TC33/SC22F, after it is finished by JWG TC33/SC22F, circulate it between SC 22F P-members, get their comments and send them to TC 33 so that these comments will be taken into account by TC 33.

Mr. L. Travin 2004-11-30

14 - 1. To maintain the permanent communication link with Prof. W.F. Long, the secretary of CIGRE SC B4, and Dr.-Ing. H. Huang, the CIGRE SC B4 Liaison Member in IEC/SC 22F, to exchange reports, drafts, comments and other working materials and final publications between IEC/SC 22F and CIGRE SC B4. 2. To refrain from the proposing new IEC/CIGRE PASs for the time being until the guidance on market values of the issued IEC SC 22F publications is received and discussed. 3. To request information from the IEC Central Office on the market demand for the published SC 22F standards, technical reports and PASs.

Mr. L. Travin

SC 22F

Mr. L. Travin

Permanent -

2004-10-30

15 - To approve the updated Programme of work of SC 22F as it is given in Annex A.

SC 22F 2004-09-07

16 - To approve the updated SPS of SC 22F as it is given in Annex B.

SC 22F 2004-09-07

17 - 1. To ask Mr. Hubert Bilodeau, the chairman of the IEEE-PES High-Voltage Power Electronics Stations Subcommittee (SC i0), to contact the NFPA and to develop the International Standard for IEC SC 22F on the base of the existing NFPA standard/guide/recommended practice. 2. To request electronic versions of the IEEE SC I0 reports mentioned in Item 14.1 on the application of voltage source converters for power transmission and Power Electronics Building Blocks (PEBB) from Mr. H. Bilodeau and send them to SC 22F members for the discussion at the next IEC/SC 22F meeting to consider whether they could be issued as double-logo IEC/IEEE PASs. 3. To circulate information document on the comparison of terms and definitions used in IEC 60633 Ed.2 “Terminology for high-voltage direct current (HVDC) transmission” and in the International Electrotechnical Vocabulary (IEC 60050, Part 551: Power Electronics) to P-members with the request to comment on the possible necessity of amendments in IEC 60633 Ed.2.

Mr. L. Travin

Mr. L. Travin

Mr. L. Travin

2005-02-30

2005-02-30

2005-04-30

19 - To contact the UK IEC National Committee with the request to host SC 22F meeting in London in September 2006 together with the IEC General Assembly.

Mr. L. Travin 2004-09-20

(SC B4 Meeting at Bangalore, India) 22, Sept., 2005 CRIEPI, Japan

Present Status of Wind Power R&D in Japan

1. Introduction Research and Development on wind power generation in Japan has started in 1985 under the “Sunshine Project” of New Energy Development Organization (NEDO), aiming to clarify the subjects for practical use of wind power generation. This R&D project was continuously succeeded to NEDO projects on “Development of large scaled wind power generation” more than 500kW, “Development of integrated wind power system” for the advanced control, and “Investigation of wind conditions” around Japan. The rich results on design and manufacturing technologies in these projects such as large scaled wind blade and gear control system, and operation experiences of the large scaled system at Tappi wind generation site were succeeded to new project of NEDO on “Development and field test of wind power generation” started in 1995, in order to accumulate the data on wind power system design & operation and detailed wind conditions of each site. The direction of new energy development estimated by government is shown in Table 1, in which around 3% of total energy supply in 2010 is to be developed. In order to achieve these goals, some measures for new energy acceleration such as Recycle-energy Portfolio Standard (RPS) law, or the subsidy by government for new energy introduction have been applied. The total capacity and number of wind power systems in Japan are increasing rapidly as shown in Figure 1.

Table 1 Goals for New Energy Development 2010 2002

Scenario 1 Scenario 2 Scenario 3 Photovoltaic Gen. 156 (637) 1180 (4820) 1180 (4820) 1180 (4820) Wind Power Gen. 189 (463) 1340 (3000) 1340 (3000) 1340 (3000) Waste & Biomass Gen. 1746 (1618) 5860 (4500) 5860 (4500) 5860 (4500) Solar Heat 740 740 900 4390 Waste Heat 1640 1860 1860 140 Biomass Heat 670 3080 670 Non-used Energy 46 50 50 580 Others 4710 4830 4830 4940 Total 9228 16530 19100 19100

Unit; 1000kl (MW)

Figure 1 Trend of Total Wind Power Generation in Japan 2. Special Features of Wind Power in Japan The distribution of wind power generation developed in each prefecture is shown in Figure 2, which shows that wind power generations are introduced in northern area; Hokkaido, Aomori, Iwate, Akita Pref. and in south-western area; Kagoshima Pref. more than in central area.

Figure 2 Distribution of Wind Power Generation (April, 2005)

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12月 2月 4月

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put P

ower

(MW

h), U

tiliz

atio

n (%

0

1

2

3

4

5

6

7

8

Win

d Sp

eed

(m/s

OutputPower

Utilizat ionRate

Ave. WindSpeed

[Inaniwa-Kogen W.G.; Iwate Pref. in Northern Area] Figure 3 Output Power, Ave. Wind Speed and Utilization Rate of Representative W.G.

The average value of utilization rate of wind power generation in Japan is unable to be expected to the same level in foreign countries where the average wind speed variation is less than 15%, which causes the utilization rate of wind power generation is more than 30%. The average wind speed variation at Haverigg in United Kingdom where a wind farm is planning is shown in Figure 4 for comparison.

Figure 4 Monthly Variation in Average Wind Speed at Haverigg.

0

100

200

300

400

500

600

700

９月12

月３月６月９月12



月３月

Out

put P

ower

(MW

), U

tiliz

atio

n (%

0

2

4

6

8

10

12

Win

d Sp

eed

(m/s

Out putPower

Ut ilizat ionRat e

Ave. WindSpeed

3. Wind Power Interconnection to Power Grid While annual fluctuation of wind power caused by wind speed variation described above is able to adjusted by power system operation, the wind power fluctuation with more than ten minutes interval or hourly fluctuation is to be compensated by power reserve in power system. Moreover the wind power fluctuation with more than ten seconds interval can be absorbed by spinning reserve of hydro generation or governor free thermal generation. It is, however, required the wind power fluctuation with less than ten seconds to be compensated by itself. In order to mitigate the effect of wind speed variation to wind power output that causes not only the power fluctuation in power system, but also voltage fluctuation in power network, some wind power conversion schemes have been developed and applied. While the pitch angle control of wind power blade is effective to keep the wind power output constant in more than rating power, the wind power conversion scheme is effective to mitigate the wind power fluctuation under the rating power. The wind power control using secondary winding exciting system (SWE) of induction machine is simple scheme for wind power conversion. The SWE system of induction machine controls the exciting voltage by the feedback of system voltage, which controls the wind power output by changing the slip of induction machine. Two types of DC link scheme also have been proposed and developed for wind power control. One is SM +TR +VSI system controling the wind power output by the vector control of VSI, and other is IM +VSR +VSI system controling the wind power output by the vector control of VSR or VSI. In Figure 5, the configurations of these wind power conversion schemes are shown including conventional scheme, where abbreviations are used as follows; SM; Synchronous Machine, IM; Induction Machine, TR; Thyrister Rectifier, VSR; Voltage Source Rectifier, VSI; Voltage Source Inverter /

Figure 5 Configurations of Wind Power Conversion Schemes

Wind Speed Cut in Cut-out

Win

d Po

wer

(a) Conventional Wind Power Conversion

(b) SWE type Wind Power Conversion (c) DC link type Wind Power Conversion

Gear Power Grid

Control

Wind Turbine IM

Gear Power Grid

Control

Wind Turbine

Exciter

Control

IM

Gear Power Grid

Control

Wind Turbine

Control

TR/VSR

SM/IM

VSI

DC Link

4. Simulation of Wind Power Conversion Schemes The fluctuation of wind power output caused by wind speed variation is analyzed by Matlab- simulink program. The analyzing model for the DC link (IM+VSR+VSI) type wind power conversion scheme is developed as follows;; {Wind Turbine} Wind Torque Tw＝1/2ω＊C＊ρ＊πR2＊V３

Motion Equation Jdω/dt＝Te－Tw Where, ω；Rotating Speed, ρ；Air Density, V；Wind Speed, C；Output Coef. (Figure 6)

Figure 6 Edge Speed Ratio vs. Output Coefficient {Induction Machine with VSR} IM Equation ０＝R/L＊φd＋dφd/dt－R＊M/L＊Id－ωs＊φq ０＝R/L＊φq＋dφq/dt－R＊M/L＊Iq＋ωs＊φd ωs＝１－ω Torque Te＝Iq＊φd－Id＊φq VSR Equation Id、Iq；Related by Vector Control of VSR {DC Circuit and VSI} DC Equation C＊dEc/dt＝Ir－Ii

Ir＝Kr＊SQRT（Id２＋Iq２）、 Ii＝Ki＊SQRT（Idi２＋Iqi２）

VSI Equation Idi、Iqi；Related by Vector Control of VSI The wind power performance under a usual wind speed is analyzed using above model. The output power of DC link scheme applying a control formula to VSR vector control to get maximum power point is shown in Figure 7 (red line). As shown in this figure the fluctuation of output power is suppressed in comparison to the conventional wind power conversion scheme by IM (blue line).

0 2 4 6 8 100

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

周速比　λ

出力

係数

　Cp

1 0deg15deg20deg

to Power System Ec

DC Capacitor

VSR VSI

IM

Id、Iq Idi、Iqi

Φd,φq R

L Id、Iq

M

Equivalent Circuit for IM

Out

put C

oeffi

cien

t C

Edge Speed Ratio λ

Figure 7 Comparison of Wind Power Conversion Aiming to utilize the energy storage function of DC Capacitor of DC link and inertia of wind turbine system, simulation carried out changing the capacity of DC Capacitor or the time constant of smoothing current reference for vector control of VSR. The output power fluctuation of wind power conversion is almost proportionally suppressed with increase of the capacity of DC capacitor as shown in Figure 8 (left). This result also shows that the high frequency components are eliminated by DC capacitor. It is also clarified that the larger the time constant of smoothing the current reference for vector control, the smoother the output power of wind power conversion as shown in Figure 8 (right). The time delay of current reference changes the waveform of the output power.

Figure 9 Comparison between Changing DC capacitor and Time Constants of Current Reference

0 10 20 30 40 50 600

0.05

0.1

0.15

0.2

0.25

0.3

時間[s]

有効

電力P1[pu]

C =10,000[μF]C=30,000[μF]C=50,000[μF]

0 10 20 30 40 50 600

0.05

0.1

0.15

0.2

0.25

0.3

時間[s]

有効

電力

P1[pu]

T= 5[s]T=10[s]T=20[s]T=30[s]

0 10 20 30 40 50 600

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

風速[pu]

時間[s]0 10 20 30 40 50 600

0.05

0.1

0.15

0.2

0.25

0.3

時間[s]有

効電力

P1[pu]

固定速制御法１

Time {sec} Time {sec}

Win

d Sp

eed

{PU

}

Out

put P

ower

{PU

}

Conventional DC Link

Out

put P

ower

{PU

}

Out

put P

ower

{PU

}

Time {sec} Time {sec}

5. Conclusion The average wind speed variation by +-25% causes to the output power fluctuation by +-50% and the low utilization of wind power generation less than 30%. While not only the monthly output power fluctuation but also that of more than some ten seconds interval can be compensate by the operation of interconnected power system with power reserves and spinning reserves of power system, the output power fluctuation less than ten seconds interval is required to be compensated by some countermeasures. The new wind power conversion schemes have been developed to compensate the output power fluctuation less than some ten seconds interval that affects to the voltage of interconnected point of wind power system. It is clarified that the DC link (IM+VSR+VSI) type wind power conversion scheme is effectively mitigate the output power fluctuation by the smoothing the current reference for the vector control of VSR. It is an important subject to make clear the permissible capacity of wind power generation in respect to the power reserve for the output power fluctuation with more than some minutes interval and spinning reserve for more than some ten seconds interval in the interconnected power system, aiming to achieve the target of new energy development as well as to be effective of RPS law. The dynamic response of power system such as the voltage fluctuation of the wind power generation interconnected bus, or the dynamic stability of power system caused by the trip of large capacity wind power generations are required to be analyzed.

[North, Eastern] Area Prefecture Capacity

(MW) Number Area Prefecture Capacity

(MW) Number

Hokkaido 170.1 194 Tokyo 4.2 4 Aomori 177.5 136 Kanagawa 0.8 2 Iwate 67.6 62 Yamanashi 0 0 Akita 94.2 83 Niigata 7.2 15 Miyagi 0 1 Shizuoka 11.5 18 Yamagata 24.0 20 Nagano 0.3 2

North

Fukushima 3.8 9 Aichi 28.0 20 Ibaraki 21.8 20 Gifu 0 0 Tochigi 0.7 4 Toyama 1.8 3 Gunma 0.3 1 Ishikawa 15.7 17 Chiba 27.3 22 Fukui 1.8 2

E-Central

Saitama 0 0

Mie 18.0 26 [Western]

Area Prefecture Capacity (MW)

Number Area Prefecture Capacity (MW)

Number

Shiga 1.5 1 Tokushima 0.3 1 Kyoto 4.5 6 Kagawa 0 0 Osaka 0 1 Ehime 12.8 14 Nara 0 3 Kochi 4.7 9 Wakayama 2.3 3 Fukuoka 15.2 12 Hyogo 5.8 5 Saga 24.7 18 Tottori 2.1 2 Nagasaki 33.4 43 Okayama 0 1 Oita 11.5 13 Shimane 5.7 9 Kumamoto 18.7 13 Hiroshima 0 0 Miyazaki 1 2 Yamaguchi 9.9 9 Kagoshima 83.7 72

W-Central

W-South

Okinawa 12.3 26

REPORT TO CIGRE SC B4

"ACTIVITIES, RELATED TO HVDC SYSTEMS AND FACTS IN RUSSIA "

1. HVDC Systems

There are 2 HVDC Systems, operating in Russia: Vyborg back-to-back HVDC link and

Volgograd-Donbass HVDC overhead line.

The capacity of Vyborg BTB HVDC link is 1420 MW.

± 400 kV Volgograd-Donbass HVDC system is operating now at ± 100 kV, 25% of the

rated power. All the equipment of Volgograd-Donbass HVDC system has exhausted it's re-

source. The problems of Volgograd-Donbass HVDC system reconstruction are now under con-

sideration.

Some investigations concerning HVDC alternatives in various regions of Russia, particu-

larly in Siberia, Far East, and also for the connection with power systems of Europe, China, Ja-

pan are being carried now.

2. FACTS

The new type of the magnetically controlled shunt reactors (MCSR) with the rating up to

180 MVA, the voltage to 500 kV has been developed in Russia. The developed MCSR allows, if

it is necessary, to provide the speed of the reactive power smooth change at the equivalent time

constant of 0,1 ÷ 0,3 s, and also to provide high-speed transition from any current in a nominal

operation mode or a no-load operation mode at a time no more than 0,02 s. Power losses in

MCSR compose 3-5 W/kVA. The semiconductor converter providing magnetic bias and current

control has the rated power which does not exceed 1-2% of the reactor rated power depending on

the requirements of the time response control. The converter is placed in the separate oil trans-

former tank included into the complete MCSR set.

The MCSR was put into operation at the "Kudymkar" substation in the power system of

the Joint-Stock Company "Perm'energo" in 1999 (25 MVA, 110 kV), at the "Chita" substation in

the power system MES of Siberia in 2002 (100 MVA, 220 kV), at the "Baranovichi" substation

in the power system of Byelorussia in 2003 (180 MVA, 330 kV).

The SVC with the capacity +/- 100 MVA was put into operation in 2003 at the substation

500 kV "Novoangerskaya" in the power system MES of Siberia.

The Program creation of FACTS devices in UPS of Russia was accepted in 2003 by

JSC "FNC UPS". This program provides the allocation of the research works financing in the

range of places definition in a power system where the application of FACTS devices would be

the most effective, and also the financing of various FACTS devices pilot projects research and

2

development for the installation in various regions of Russia. The first pilot project STATCOM

(50 MVA) should be developed and put into operation in 2007.

V. Ivakin

RM SC B4, Russia

Investigation into power line carrier for HVDC links subtantially longer than 1000 km.

Eskom has started a refurbishment program at Apollo and various investigations

are underway with regard to the Westcor initiative. These would be among the

longest links in the world, as shown in the table below.

Link Line length

Gesha 1046 km

Pacific Intertie 1361 km

East – South Interconnector 1400 km

Apollo – Cahora Bassa 1414 km

Hydro Quebec – New England 1500 km

Inga – Kolwezi 1700 km

Links in excess of 1000 km 1

An area of particular interest for both of these is telecommunication [2], especially:

• Assessment and choice of technically and economically feasible

telecommunications technologies.

o Microwave has already been judged to be unsuitable for these

applications.

o OPGW may be the primary telecommunications medium, but it is

nevertheless constrained by the number of repeaters required.

• The performance and reliability of power line carrier on long lines subject

to high levels of corona and atmospherically induced noise. In this work, 1 2005; Cigre AG14-04 TF 02; Compendium of HVDC schemes throughout the world

2 Britten, A.C.; Pillay, T.; Naidoo, P.; Muftic, D.; Bologna, F.F.; Ijumba, N.M.; Eskom’s proposed

strategic research into long-distance HVDC transmission

the optimum coupling needs to be considered (i.e. pole-to-pole or pole-to-

shieldwire).

Eskom has proposed internal technical working groups for:

• Telecommunications technologies.

• Power line carrier system design.

• Antenna characteristics of long HVDC lines.

Furthermore, following the technical meeting on EHVDC held in Johannesburg in

March 2004, Dingle has made enquiries to HVDC equipment suppliers, the HVDC

User Group, and IEEE [3] about:

• The number of telecommunication channels used by HVDC links around

the world.

• Impact and limitations of converter noise on power line carrier systems.

• Performance experience.

• Any additional requirements that utility system operators have imposed,

based on operational experience or operating policies.

These have turned up very little, and there does not seem to be an appreciation

for the concerns that Eskom has. This may be because line distances for other

schemes are much shorter than those under consideration by Eskom, or because

adequate telecommunication facilities can be provided by third parties in

developed countries. For developing countries, long lines and unreliable third

party telecommunication infrastructure is a reality, so this subject may warrant

investigation by Cigré SC B4. If not, Eskom will definitely do its own investigation,

and would welcome the participation and assistance of members of Cigé SC B4.

3 Dingle, M.; Pers. Comm.

UNIVERSITY OF KWAZULU-NATAL FACULTY OF ENGINEERING

HVDC CENTRE RESEARCH ACTIVITIES AT THE HVDC CENTRE

1. Background The HVDC Centre was established in 2000 in collaboration with Eskom. Funding is provided predominantly by Eskom, and the Centre forms part of the Eskom’s 800 kV HVDC research programme. The Centre is managed by Prof. Nelson Ijumba, supported by Tony Britten, who is Co-Technical Director. It undertakes both applied and strategic research (of primarily an academic nature) geared towards improved performance of existing HVDC systems and optimized design of future systems. It also supports skills development in HVDC technology. 2. Research Programme The HVDC Centre is part of a national and international network of research centers carrying out studies in HVDC technology. The main areas of study are:

- Insulation strength - Conductor optimization - Corona and field effects - Power line carrier propagation and noise - Breakdown due to fire - Pollution performance and ageing of composite insulators - Modeling of AC and DC systems

Significant contributions have already been made in:

- Resolving power line carrier problems on the Apollo – Cahora Bassa line - Comparative study of stress distributions on polymeric and glass cap-and-pin

insulator strings - DC corona inception on ACSR conductors

3. Facilities The HVDC has got a 500 kV dc generator which is used in corona and electric fields research work. Plans are to purchase high capacity 1 MV dc generator for 800 kV dc studies. In addition the Centre has various software packages augmented by a real-time digital simulator. Laboratory equipment includes is indoor corona cage and a scale model of the Cahora Bassa-Apollo HVDC Transmission line.

SUMMARY OF SUMMARY OF ESKOMESKOM’’ss HVDC HVDC

RESEARCH AND DEMONSTRATION RESEARCH AND DEMONSTRATION

PROGRAMMEPROGRAMME

CIGRE HVDC COLLOQUIUM CIGRE HVDC COLLOQUIUM ––

BANGALORE 2005BANGALORE 2005

AC BRITTEN

INTRODUCTION• The key drivers are the Westcor and other Regional

HVDC Projects, together with a likely operating voltage of ±800 kV

• Unique combination of high altitudes (1500 m), long distance transmission (3500 km), bush fires, environmental sensitivities and power line carrier requirements make research and demonstration essential

• Focus will be on line design• Research to be done in collaboration with other relevant

utilities and manufacturers

Research Topics

Optimization of the Conductor Cross-Sectional Area

4

Electrical Characteristics of Long HVDC Lines3

Tower Configuration 2

Voltage Selection1Basic Parameters

Projects covered by technical areaTechnical Area

Technical Areas

Research Topics continued …

Conductor Surface Gradient on Shield Wire12

Power Line Carrier Noise 11

Telephone Interference 10

Field Effects (Electric and magnetic fields, ion, etc)

9

Audible Noise 8

Radio Interference and RIV 7

Corona Losses 6

Conductor Corona 5Corona Performance

Projects covered by technical areaTechnical

Area

Technical Areas


Performance of HVDC Lines 21

Birds20

Fire 19

Anomalous Flashovers 18

Voltage and Current Upgrading17

Live-Line Working and Insulation Co-ordination 16

Insulators 15

Insulation Co-ordination 14

Lightning and Switching Surge Performance 13Insulation and

Performance


Area

Technical Areas and Coordinators


Training and Selection of Technical Personnel Needed

28

Conversion of AC Lines to HVDC Operation 27

Selection and Design of HVDC Test Facilities 26

Characteristics of High Voltage, High Current DC Arcs

25Other

Antenna Characteristics of Long HVDC Lines24

Power Line Carrier System 23

Telecommunications22Telecoms


Area

Technical Areas and Coordinators

CONCLUDING REMARKS• The research programme has already started, mainly

theoretical studies

• Upgrading of laboratory facilities is already underway

• Expected to be completed by 2009/2010

EFFECTS OF FIRE ON THE EFFECTS OF FIRE ON THE

PERFORMANCE AND ROUTING OF PERFORMANCE AND ROUTING OF

HVDC LINESHVDC LINES

CIGRE HVDC COLLOQUIUM CIGRE HVDC COLLOQUIUM ––

BANGALORE 2005BANGALORE 2005

AC Britten, GC Sibilant and D Muftic

OCCURRENCE OF FIRES ALONG PROPOSED ROUTE

• DRC – high levels?

• ANGOLA – high levels

• NAMIBIA – low?

• BOTSWANA – low?

• SOUTH AFRICA – low in western parts

OCCURRENCE OF FIRES ALONG PROPOSED ROUTE

CAHORA BASSA EXPERIENCE

• ± 533 kV

• Two monopolar lines 1 km apart

• High proportion of faults caused by fire

• No pole/pole faults

SUSCEPTIBILITY OF HVDC LINES TO FIRE FLASHOVERS

• Intrinsically fire prone: withstand gradient in fire is ≤20 kV/m, whereas operational pole/pole gradient is about 100 kV/m

• HVDC lines cannot be economically designed to withstand pole/ pole and pole/ground flashovers: ± 800 kV pole/pole clearance of 80 m?! Minimum height about 40 m!


• Lower voltage lines (400,500, and 600 kV) also susceptible to fire flashovers

• Fire will have a severe effect on bipolar lines in particular

• Effects of fire on insulators: ceramic? Non-ceramic?

• Effects of fire on telecommunications repeater stations?

OPTIONS

• In fire-prone areas:Two ± 800 kV monopolar lines 1 km apart?!Non – ceramic insulators?Ceramic insulators? No repeater stations?

• Conventional clearances (pole/tower and pole/ ground)

• Vegetation management

• Routing through less severe areas where possible

University of KwaZulu-NatalHVDC Centre

Report to Cigre Study Committee B4 HVDC and Power Electronics

Background• Established 2000 in collaboration with Eskom• Funding is provided predominantly by Eskom• Part of the Eskom’s 800 kV HVDC research programme• Managed by Prof. Nelson Ijumba, supported by Tony

Britten who is Co-Technical Director. • Conducts applied and strategic research (of primarily an

academic nature) geared towards improved performance of existing HVDC systems and optimized design of future systems.

• Contributes to skills development in HVDC technology.

Research Programme

• Insulation strength• Conductor optimization• Corona and field effects• Power line carrier propagation and noise• Breakdown due to fire• Pollution performance and ageing of

composite insulators• Modeling of AC and DC systems

Research Results

• Resolving power line carrier problems on the Apollo – Cahora Bassa line

• Comparative study of stress distributions on polymeric and glass cap-and-pin insulator strings

• DC corona inception on ACSR conductors

Facilities• 500 kV dc generator which is used in corona

and electric fields research work• Planned purchase of high capacity 1 MV dc

generator for 800 kV dc studies.• Various software packages augmented by a

real-time digital simulator. • Laboratory equipment

– indoor corona cage– scale model of the Cahora Bassa-Apollo HVDC

Transmission line.

1

500 kV HVAC and 500 kV HVDC ; 2 x 2,0 GW bipole multi terminal.

INGA30000 MW

ANGOLA

NAMIBIA

SOUTH AFRICA

DEMOCRATIC REPUBLIC OF CONGO

KUANZA6000 MW

OMEGA

AUAS

BOTSWANA

PEGASUS

GABORONE

KINSHASA

500 kV HVAC System to supply Kinshasa and onto Kuanza

HVDC MULTI-TERMINALS

SCHEME

BIPOLE 2

(3 converter terminals)

Kuanza

Gaborone 0,5 GW

Pegasus 1,5 GW

BIPOLE 1

(3 converter terminals)

Inga 3

Auas 0,5 GW

Omega 1,5 GW

Base Case Commercial Proposal

2ANGOLA

CABI

NDA

Prov

ince

REP.OF CONGO

Tshela

MoandaBoma

Matadi

Mbanza-Ngungu

Kinshasa

©ibysoft

INGA

150 km

225 km

- 150 km UPSTREAMBEFORE THE MOUTH OF THE CONGO RIVER

- 225 kmDOWNSTREAM FROMKINSHASA

3

J F M A M J J A S O N D

60 000

MONTH

River Flow Rate

Inter-annual Average40.000 m3/s

Historical Min (1905) :21.400 m3/s

Historical Max (1961) :83.400 m3/s

10 000

20 000

30 000

40 000

50 000

AV

ER

AG

ER

IVE

R F

LOW

(m3 /s

)

0

4

CAMBAMBE, 700 MW

CACULO CABAÇA, 1560 MW

ZENZO II, 120 MW

LAUCA, 2120 MW

NHANGUE, 450 MW

Generation Capacity in the MÉDIO KWANZA RIVER

ZENZO I, 450 MW

TÚMULO DO CAÇADOR, 450 MWLUIME, 330 MW

Reservoirs with c

CAPANDA, 520 MW

Length: 137 Km

Capacity: 6.700 MW

27.311 GWh

Cambambe-Capanda: Natural inclination 800 m

5

Westcor Project

• October 2004 : Signing of Inter-Governmental MOU

• October 2004 : Signing of Inter-Utilities MOU

• Sept. 2005 : Signing of Shareholders Agreement

• Oct 2005 : Appointment of Board of Directors and Company Secretary

• End of 2005 : Appointment of COO (Project Mgr.)

SC B4 Meeting 2005 1


• Project:- 1000MW power

connection from the Isle of Lewis to mainland Scotland

• Developer:- Scottish Hydro-Electric

Transmission Ltd, part of the Scottish & Southern Group.

• Objective:- Export of wind power

from Lewis.

Western Isles Connection

Site locations and routes areindicative only

1000MW91km



Wind Generation on Lewis

• The Western Isles have excellent conditions for wind-generation.- An average load factor of > 54% is expected.- The generators can be placed on land.

• Several wind farm developers have expressed interest.

• Proposed wind farm sizes range from a few 10s MW to 600MW - total >1000MW.

• Wind generator technology not yet known.



Connection Challenges

• Connection and wind farms to ride through interruptions on both Island and Mainland.- Fast dynamic response is required.- Fast reactive power management (SCR on mainland <2.5) is essential.

• Supply quality for the local consumers (15 to 26MW load) not to be degraded.- Presently supplied via a 18MW ac cable from Isle of Skye and a diesel generation station on Lewis, which it is hoped to shut down on completion of the connection.



Time scales

• Project will be in 2 stages: - 1st stage is a design contract.- 2nd stage is the implementation.

• Tenders for stage 1 received end 2004.• Evaluation presently halted• Implementation stage to follow after granting of consents.


Caprivi Link



Legend 400 kV 330 kV 220 kV 132 kV 66 kV Generation Existing Generation Potential

Legend 400 kV 330 kV 220 kV 132 kV 66 kV Generation Existing Generation Potential

Auas

Hardap

Rundu

Omburu

Kokerboom

Namib

Obib

KuisebWalmund Van Eck Omaere

Katima Mulilo

Kudu

Epupa/Baynes

Divundu /Popa Falls

Paratus

Harib

Livingstone(ZAMBIA)

Rock

Otjikoto

Gerus

OkatopeOmatando

RuacanaKongola


Andersen Power Electronic Solutions LtdCONGO ( K )

TANZANIA

MOZAMBIQUE

ZIMBABWENAMIBIA BOTSWANA

NGOLA

KALABO

MONGU

SENANGA

SESHEKE

SOLWEZI

ITEZHI - TEZHI

VICTORIA FALLS

MUZUMA

MICHELO

KASAMA

NAK

ISOKA

CHINSALI

MPIKA

PENSULO

SERENJE

CHIPATA

LUWINGU

MANSA

CHIRUNDU

LEOPARDS HILL

KABWE

LUSAKA WESTMUMBWA

KAFUE/TKAFUE WEST

MAZABUKA

MULUNGUSHI

LUNSEMFWA

KAFUE LOWERKARIBA NORTH

KARIBA SOUTH

LAKE KARIBA

KAFUE GORGE

MPONGWE

KANSUSWALUANO

KITWE

MAPOSA

KAPIRI

MKUSHI

SAMFYA

MPOROKOSOCHISHIMBA

LUNZUA

LUNDAZI

ZAMBIA GENERATION AND TRANSMISSION SYSTEM

KEY330kV LINES220kV LINES

88kV LINES66kV LINES

POWER STATIONS

SUBSTATIONS

PROPOED SUBSTATIONS

PROPOSED POWER STATIONS

132kV LINES

Connections to South Africa and Zimbabwe



Caprivi Link

• 200MW capacity, • Generally import to Namibia from Zambia• 3 Options considered

- back to back plus long ac lines- 200km link, plus long ac lines- 800km link

• Functional Spec has been issued and proposals received have been evaluated



Caprivi Link

• Initial recommendations after techno/financial study:- 200MW, 800km option- Both terminals are very weak e.g. SCL about 230MVA at both end!!

• Synchronous compensators needed



Caprivi Link

• Presently evaluating 400MW instead of 200MW scheme- requires strengthening of ac system in Zambia

• Kafue to Livingston upgrade to 330kV• Livingston to Katima upgrade to 2 x 220kV

- some upgrade of the ac system in Namibia may also be required

- Power Loss savings in Zambia

1. Replacement of Control System in Hokkaido-Honshu HVDC Link

2. Reconstruction of Pole I in Shin-Shinano FC

3. Power System Operation Issues in HVDC Link and FCs

* Power Wheeling through Hokkaido-Honshu HVDC Link and

FCs for 50/60Hz Interconnection

* Operation of Higashi-Shimizu FC

Topics of HVDC Link & FCs in Japan

Replacement of Pole 1 Control System in Hokkaido-Honshu HVDC Link

Gr2

Gr1Pole 1

Gr2

Gr1

Pole 2

GC2

GC1

PC 1

Master Cntrl

GC2’

GC1’

PC 1’

Master Cntrl’

PC 2

GC3

PC 2’

GC3’

- Shortage of spare parts for analog control devices- All digital control system same as Pole 2

DC line

Micro wave and Line Carrier

Reconstruction of Pole I in Shin-Shinano FC

Pole I

Pole II

AC Filter & Shunt Equipments

to 50Hz System

AC Filter & Shunt Equipments

to 60Hz System

12 pulse Quadratic Converter

6 pulse Single Converter Out-door type

- Shortage of spare parts for control system and converter devices- All digital control system and simplified configuration

same as Pole II

DC Reactor

Power System Operation Issuesin HVDC Link and FCs

• Power Wheeling through Hokkaido-Honshu HVDC Link andFCs for 50/60Hz Interconnection

* Operation of Higashi-Shimizu FC- Related AC 275kV transmission line is late completion- Operation capability is restricted to 100MW (1/3 of Rating)

Wheeling Power

DC Power

AFC Region

Wheeling is restrictedWheeling Power

DC Power

Power Relief is required

[Hokkaido-Honshu Link] [FCs for 50/60Hz Interconnection]

System Configuration of Chubu Electric Power Co.