hvdc syndicate final-modified
TRANSCRIPT
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The Role and Prospects of HVDC
System in PakistanMerits and Demerits using DC System
as compare to AC System
PRESENTED BY
GROUP A82ND JMC
WASC
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Contents
3
Introduction and Fundamentals of Project
HVDC System Components
HVDC Schemes and History
Case Study
Overview
Transmission Schemes
Cost Analysis
Environmental Impacts
Conclusion
References
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
3
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OVERVIEW OF THE PROJECT
4
Introduction of HVDC system
Reasons for selection
- Futuristic approach
- Long lengths & bulk powers
- Interconnection of unsynchronized
systems
Introduction &
fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
4
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A.C SupplyFundamentals
AC Current
AC Impedance
Frequency
AC Voltage
AC Power & Losses
AC Supply FundamentalsIntroduction &
fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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A.C SupplyFundamentals
DC Supply FundamentalsIntroduction &
fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
6
DC Voltage
DC Current
DC Resistance
Frequency
DC Power & Losses
O i f P S t
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Overview of Power SystemComponents With A.C
POWER STATION-Generator output
at 11kV/20kV is stepped up bytransformer to 132kV 275kV and 500kVfor transmission.
HEAVY INDUSTRY - Some havedirect connections to the transmission at132kV
TRANSMISSION - Transmission is mainly at132kV, 275kV and 500kV
SMALL INDUSTRY -Most small factories receivetheir electricity at 11kV
HOUSE - Overhead distributionto individual houses is at 240V.
AROUND TOWN &RESIDENTIAL AREA -Underground distribution toindividual premises is at
415V and 240 V
Introduction &
fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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A.C SupplyFundamentals
D.C SupplyFundamentals
Componentsof
HVDC
Generator
Converters/Invertors
Transmission
Filters & Reactors
Transformation
Automation
System
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Generator
9
A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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HVDC Transformer
10
A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
10
C t / I t
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Convertors / Invertors
11
A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Transmission (Cable)
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A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
12
O
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Transmission (O/H Line)
13
A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
13
Fil & R
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Filters & Reactors
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A.C SupplyFundamentals
D.C SupplyFundamentalsFILTER
REACTOR
Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Block Diagram of HVDC
15
Rectifier Station Inverter Station
resistance
ACsignal
ACsignal
VR
Vi
Id
Filter Filter
Introduction
Applications
History
AC versus DC
Cost Structure
Block Diagram
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
15
M l S h f HVDC
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Monopole Scheme of HVDC
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Introduction
Applications
History
AC versus DC
Cost Structure
Block Diagram
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
16
Bi l S h f HVDC
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Bipolar Scheme of HVDC
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Introduction
Applications
History
AC versus DC
Cost Structure
Block Diagram
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
17
B k t B k S h f HVDC
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Back to Back Scheme of HVDC
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Introduction
Applications
History
AC versus DC
Cost Structure
Block Diagram
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
18
HVDC Substation
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HVDC Substation
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A.C SupplyFundamentals
D.C SupplyFundamentals
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
19
TYPICAL HVDC APPLICATIONS
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Introduction
Applications
TYPICAL HVDC APPLICATIONS
Systems with different frequencies
Power over long undersea cable
Point-to-point long distance transmission
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
20
History of HVDC
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History of HVDCIntroduction
Applications
History
1940s Studied in Germany
1954s First Commercial Application in Sweden
- Submarine Link b/w mainland &Gotland
island
- 100KV
- 20MW- 90KM
1970s Introduction of tryristors
- 600KV
- 3000MV
Today - Dominating Technology
- Long distance transmission of bulk power
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes
& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Case Study Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
22
HVDC Projects under Consideration
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HVDC Projects under Consideration
in Pakistan
Import of power from :
Coastal & Thar Area.
Tajikistan (CASA).
Northern Areas.
Iran
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
23
Bird Eye View of the Project Area
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Bird Eye View of the Project Area
QuettaCityZahedan
City
PakistanIran
Border
ZahedanCity To
PakistanBorder
(93 KM)
Quetta
To
Iran Border
(585 KM)
Break Even Distance of AC & DC
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Break Even Distance of AC & DC
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The plot of the transmission distances versus cost for both
HVDC and HVAC.
Break Even Distance
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
25
Cost Break-up of Converter Station
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Cost Break-up of Converter Station
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Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Cost Comparison of Substation
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Cost Comparison of Substation
0
50
100
150
200
250
300
350
400
HVAC HVDC
Sub/Converter
Substation
Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
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Cost Structure contd
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Introduction &fundamentals
HVDC systemcomponents
HVDC schemes& history
Case Study:Overview
TransmissionSchemes
Cost analysis
Impact &Implementation
28
Recommendations
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Recommendations
500 KV HVDC Bipolar Option
is Recommended
for cross-border inter
connection between Iran and
Pakistan.
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Introduction &fundamentals
HVDC system
components
HVDC schemes& history
Case Study:
Overview
TransmissionSchemes
Cost analysis
Impact &
Implementation
29