the embedment of zuqde-project into the power system ... · pdf fileelectrical appliance...

FINESCE final event "Utility 4.0“

15-16 September 2015, Berlin, Germany

The embedment of ZUQDE-project into the

power system holistic approach

Albana Ilo

University of Technology of Vienna

Institute for Energy Systems and Electrical Drives

FINESCE final event "Utility 4.0“, Berlin 2015

ZUQDE Central Volt/Var Control in presence of DG’s

ZUQDE Zentrale Spannungs (U) – Blindleistungs (Q) Regelung Dezentraler Erzeuger

Start: July 2010

End: April 2012

Funded by: Neue Energien 2020, Austria

Total budget: ~0.55 Mio. Euro

Partners: Salzburg Netz GmbH; Siemens AG

Operation: The region Lungau in Salzburg, Austria was continuously operated automatically, in closed loop for more than one year.

Project data

Source: ZUQDE 2012, final Report

A. Ilo, W. Schaffer, T. Rieder and I. Dzafic, “Dynamische Optimierung der Verteilnetze—Closed Loop Betriebsergebnisse,” VDE Kongress 2012,

Stuttgart, Germany

Developed based on the:

“Energy supply chain net” holistic approach

Distribution System State Estimator

Volt var control


Power system overview based on the “Energy

Supply Chain Net” model: horizontal und vertical axis

ver

tica

lax

is

G

GG

Source: A. Ilo “The Energy Supply Chain Net”, Energy and Power Engineering, Volume 5 (5), July 2013.

Per definition the “Energy Supply Chain Net” is

a set of automated power grids, intended for

“Chain Links” or “Links”, which fit into one an -

other to establish a flexible and reliable electrical

connection. Each individual “Link” or a “Link”-

bundle operates independently and have

contractual arrangements with other relevant

boundary “Links”, “Link”-bundles, and suppliers

which inject directly to their own grid. Each

“Link” or “Link”-bundle is communicatively

coupled with the other relevant “Links” or

“Link”-bundle’s via the usual communication

instruments


“Energy Supply Chain Net”- Vertical axis

The Link Paradigm

HVG

MVG

LVG

G

GG

G

GG

CPG

COOLING

HEATING

Source: A. Ilo “Link- the Smart Grid Paradigm for a Secure Decentralised Operation Architecture”, accepted to be published in Electric Power Systems

Research - Journal - Elsevier

Hardware

Automation

Communication

Electrical applianceControl schema Interface

Link - Paradigm

A technical system consists of

three major elements:


Electrical applianceControl schema

Interface

Link - Paradigm

Grid Secondary control

Interface

Grid - Link

ProducerPrimary control

Interface

Producer - Link

˜ ˜

Set

point

Architecture Elements

StoragePrimary control

Interface

Storage-Link

St St

Set

point



Architecture Elements


Neighbor link (n)Neighbor link (j)External Neighbor link (1)

Customer Plant

Operation / Study Link (i)

Grid – Link or Link

The distributed Link - based power system

operation architecture




Medium Voltage Grid-Link type

Externa Neighbor link (n)

LVG

˜ PSched(1)

Operation/Study Grid-Link (j-1)

MVG

External Neighbor link (1)

HVG

PSched(n)

St

St

St˜

˜

PSched(1) PSched(1)

PSched(m) PSched(z)

External Neighbor link (j)

LVG

PSched(j+1)

External Neighbor link (1)

LVG

BLiN Tr A

Secondary

controlSet point

BSN ˜

BLoN

BLiN

BPN

BLoN BLiN BLiN

BLiN

StOperation / Study

Grid -Link (j-1)

MV

HV

MVG

Schematic presentation Use case → Load-generation process




MV-Grid-Link and Producer-Link, realized and

operated in the framework of ZUQDE project

Reactive power and voltage control


MV-Grid-Link and Producer-Link, realized and

operated in the framework of ZUQDE project

Reactive power and voltage control

BLiN

˜

MVG

30.0 kV

Secondary

control

˜

˜ ˜

Q Q

U

Q Q

cosf=const

Neighbor LV-Grid-LinkNeighbor LV-Grid-Link

Neighbor HV-Grid-Link

Operation / Study MV-Grid-Link

Lungau

Neighbor LV-Grid-Link

cos(f)=const.

MV-Grid-Link


Conclusions

By using the ZUQDE-system:

- The consideration of the holistic power system approach creates the possibility to

eliminate the contradictions and challenges arising from the high DG share presence

- the grid have been operated with lower operational voltages

- the voltage was controlled automatically and the network operation was being

dynamically optimized in real-time.

- the demand reduction was realised smoothly. It was observed a load reduction

potential of more than 5%

- a further increase in DG production capacity in the critical Lungau MV grid section of

about 20% is realistic

Thank you for your attention

Albana Ilo

University of Technology of Vienna

Institute for Energy Systems and Electrical Drives

Telefon: +43 (0)1 58801 370114

Mail: [email protected]

FINESCE final event "Utility 4.0“

15-16 September 2015, Berlin, Germany

the embedment of zuqde-project into the power system ... · pdf fileelectrical appliance...

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