Bulk Power EHV & UHV GRIDTECH 07-02.ppt ... - · PDF filePower Transmission and Distribution s Prospects of Bulk Power EHV and UHV Transmission 5th & 6th Feb, 2007 at India Trade Promotion

Power Transmission and Distributions

Prospects of Bulk Power EHV and UHV Transmission

5th & 6th Feb, 2007 at India Trade Promotion Organisation - Pragati Maidan, New Delhi, India5th & 6th Feb, 2007 at India Trade Promotion Organisation - Pragati Maidan, New Delhi, India5th & 6th Feb, 2007 at India Trade Promotion Organisation - Pragati Maidan, New Delhi, India

High Voltage

Velnapur RamaswamiDietmar Retzmann

Karl Ücker

2 02-2007 Power Transmission and DistributionPTD H 1 MT/Re

System Interconnection &Transmission Enhancement

Getting more Power out of the Grid

2

The Task:

Benefits ofEHV & UHVSolutions

02-2007 Power Transmission and DistributionPTD H 1 MT/Re


Renewable Energy Resources at favorableLocations *

Transmission of large Power Blocks over long Distances * (Hydro Resources, Solar Energy)

Increased Power Exchange among the Interconnected Systems

Extensions of Interconnected Systems

* by use of HVDC / FACTS for “remote” Infeed* by use of HVDC / FACTS for “remote” Infeed

Enhancement of Transmission Systems


Power System Development: The Key-Issue –How to avoid Bottlenecks

PrivatisationGlobalisation/Liberalisation

Deregulation - Privatization: Opening of the Markets, Independent Transmission Companies ITCs, Regional Transmission Organisations RTOs

PrivatisationBottlenecks inTransmission

Problem of uncontrolled Loop FlowsOverloading & Excess of SCC* LevelsSystem Instabilities & Outages

System Enhancement & Interconnections:Higher Voltage Levels **New Transmission TechnologiesRenewable Energies

** Example UCTE: 400 kV is actually too low** Example UCTE: 400 kV is actually too low

* SCC = Short-Circuit Current

Investments inPower Systems


Source: National Transmission Grid Study; U.S. DOE 5/2002 – “Preview”

System Enhancement necessary !

Source: ITC 8/2003 – “Blackout”

* PTDF = Power Transfer Distribution Factor

The US Blackout 2003:Congestion, Overloadsand Loop Flows

* Problems only in thesynchronous interconnected Systems

If Power Flow exceeds the Design Criteria: Blackout


HVDC: it forces Power to flow

Slow FunctionsSlow Functions

Fast Functions

V1 V2

Q2

L and C

Q1

L and C

G ~G ~

α and γ

PI2I1

Fault-Current Blocking

Power & Voltage ControlFault-Current Blocking

Benefits ofHVDC in a synchronous AC System

The Firewallfor Blackout Prevention


Options of HVDC Interconnections

b) HVDC Long Distance Transmission

a)

a) Back-to-Back Solution

Can be connected to long AC Lines

b)

c) Integration of HVDC into the AC System

c)

c)



8 11-2006

The Challenge:

The Solutions areHVDC & FACTS

Security of Supply &Green Energy



Customer:

End User:

Location:

Project

Development:

Supplier:

Transmission:

Power Rating:

Transmission Dist.:

Neptune RTS

Long Island Power

Authority (LIPA)

New Jersey: Sayreville

Long Island: Duffy Avenue

NTP-Date: 07/2005

PAC: 07/2007

Consortium

Siemens / Prysmian

Sea Cable

600/660 MW monopolar

82 km DC Sea Cable

23 km Land Cable

Ed Stern, President of Neptune RTS: “High-Voltage Direct-Current Transmission will play an increasingly important Role, especially as itbecomes necessary to tap Energy Reserves whose Sources are far away from the Point of Consumption”

Safe and reliable Power Supply for the Mega Cities –“Blackout Prevention”

New DC Cable Link Neptune RTS, USA


India: East-South HVDC Interconnector

10 Power Transmission and DistributionPTD H 1 MT/Re

DC Station Talcher – State of Orissa2003 2000 MW

2500 MWRAI & LFL: full Use of Overload Capacity –without additional Thyristors

2007

01-2007



Network Load and aggregated Wind Power Generationduring a Week of maximum Load in the E.ON Grid

Source: E.ON - 2003

Problems with Wind Power Generationo Wind Generation varies stronglyo It can not follow the Load Requirements

This will be a strong Issue in the German Grid Development

Additional Reserve Capacityis required


Hydro Plants for:Base Load andEnergy Storage

Plus Wind Power

Covering Base and

Benefits of HVDC:Clean Energy CO2 ReductionCost Reduction

“flexible”

“fuzzy”

Peak-Load Demands

Basslink HVDC: remote Infeed of Green Energy

2005


A possible Solution: Integration of HVDC Transmission into a synchronous AC System

Share in installed wind energy of 12,223 MW

E. ON Netz: 48 %Vattenfall Europe Transmission: 37 %RWE Net: 14 %EnBW Transportnetze: 1 %

Source: E.ON - 2003

E. ON Netz: 48 %

Share in installed Wind Energy of 12,223 MW

Vattenfall Europe Transmission: 37 %

RWE Transportnetz Strom: 14 %EnBW Transportnetze: 1 %

Benefits of such a Solution:o Load Sharingo Generation Reserve Sharing

Vattenfall Europe Transmission

Long-term: 30 - 50 GW

Installed Generation Capacity: 120 GW (2006)


Some Some Countries will Countries will needneed Bulk Bulk Power Power TransmissionTransmissionCorridors Corridors ……

… Increase in Transmission Distance - andReduction in Losses

Solutions:800 kV DC & 1000 kV AC

AC: 6-10 GW

DC: 4-6 GW

Prospects of UHV DC & UHV AC


China: AC & DC Power Transmission from West to East - Three Bulk Power Transmission Corridors

Sources:

North Corridor

Central Corridor

3 x 20 GW

South Corridor

… the installed Generation Capacity will be 900 GW

Transmission Capacity of each Corridor will be 20 GW in 2020 …

800 kV DC &1000 kV AC


R O U R K E L A

R A IP U R H IR M A

T A L C H E R

JA IP U R

N E R

E RW R

N R

S R

B 'S H A R IF

A LL A H A B A D

S IP A T

G A Z U W A K A

J E Y P O R EC H A N D R A P U R

S IN G R A U LI

V IN D H Y A -

2000

MW

2000MW

3000M W

1 0 0 0M W

5 0 0 M W

L U C K N O W

D IH A N G

C H IC K E N N E C K

K R IS H N A

T E E S T A

T IP A IM U K HB A D A R P U R

M IS A

D A M W E

K A T H A L -G U R I

L E G E N D

7 65 K V L IN E S 4 00 K V L IN E S

H V D C B /B

H V D C B IP O LE

E X IS T IN G / X P L A N X I P L A N

Z E R D A

H IS S A R

B O N G A IG A O N

D E V E L O P M E N T O F N A T IO N A L G R ID

K O LH A P U R

N A R E N D R A

K A IG A

M A N G A L O R E

P O N D A

IX P L A N

M A R IA N I

N .K .

K A H A L G A O N

R A N G A N A D I

S E O N I

C H E G A O N

B H A N D A R A

D E H G A M

K A R A D

L O N IK A N D

V A P I

G A N D H A R /

T A L AA R U N

B A N G L A

B A L L A B G A R H A 'P U R(D E L H I R IN G )

B A N G A L O R E

K O Z H IK O D E

C O C H IN

K A Y A M K U L A M

T R IV A N D R U M

P U G A L U R

K A Y A T H A R

K A R A IK U D I

C U D D A L O R E

S O U T H C H E N N A I

K R IS H N A P A T N A M

C H IT T O O R

V IJA Y A W A D A

S IN G A R P E T

P IP A V A V

L IM B D I

K IS H E N P U R

D U L H A S T IW A G O O R A

M O G A

U R I

B H U T A N

R A M A G U N D A M

S A T LU JR A V I

J U L LA N D H A R

D E S HN A G A R

V A R A N A S I

/U N N A O

M 'B A D

P U R N E A

K O R B A

N A G D A

S IL IG U R I/B IR P A R A

P H A S E - III

NIC

OB

AR

AN

DA

MA

N AN

D

LAKSHAD

WEEP

T E H R I

M E E R U T

B H IW A D I

B IN A S A T N A

M A L A N P U RS H IR O H I

K A W A S

A M R A V A T I

A K O L A

(B y 2 0 1 2 )

A G R A

S IR S I

C H A L

JE T P U RA M R E L I

B O IS A RT A R A P U R

P A D G H E

D H A B O L

K O Y N A

/B A R H

G 'P U R

H O S U R

Prospects in China and India:

“Smart”andStrong Grids

Similar Perspectives … as in China

+/- 800 kV HVDC !

Grid Extension in India - Hybrid AC plus DC

Source: “Brazil-India-China Summit Meeting on HVDC & Hybrid Systems – Planning and Engineering Issues”, July 2006, Rio de Janeiro, Brazil


50 GW Hybrid:≈ 40 GW DC≈ 10 GW AC


Solutions for UHV DC Thyristor Valves

UHV DC Valves using proven modular Designbased on existing Technology and Know-How for DC Voltage 800 kVValve Tower Configuration: Double or Quadruple Valve Proven existing LTT Technology

Thyristor

Module

Valve Group


Valve Hall Configuration – for UHV DC

400 kV Valve Hall

DC Neutral

400 kV DC


400 kV DC

800 kV Valve Hall

to 800 kV DC Line

“Ready for Transmission”


Transformer for UHV DC

Works for 800 kV DC Transformer

Existing Technology and Know-How can well manage higher DCVoltage Stresses Transformers for 800 kV HVDCSystem are within existingManufacturing CapabilitiesTransportation Limits and ConverterConfiguration will determine Type and SizeR&D in Progress in specific Fields

Basically a ”mechanical”Issue


UHV DC Bushing at Test Lab TU Graz – Austria

800 kV DC Bushing in Test Field


Large System Interconnections: keep them safe

Large System Interconnections, using HVDCLarge System Interconnections, using HVDC

High Voltage

and FACTS

- via AC LinesHVDC - Long Distance DC TransmissionHVDC B2B

AC Transmission & FACTS

DC – the Stability Booster and“Firewall” against “Blackout”

SystemA

SystemC

SystemE

SystemF

SystemB System

D

SystemG

“Countermeasures”against large Blackouts

by using HVDC & FACTS – in a hybrid Way

21 02-2007 Power Transmission and DistributionPTD H 1 MT/ReSolutions for a “Smart Grid”


Thank You for your Attention!

Intelligent Solutions for Power Transmission

… and the Lights will keep shining !

with with HVDCHVDC & &

FACTSFACTS fromfrom

SiemensSiemens


Thank You for your Attention !

Intelligent Solutions for Power Transmission

with with HVDCHVDC & &

FACTSFACTS fromfrom

SiemensSiemens

Documents

Bulk Power EHV & UHV GRIDTECH 07-02.ppt ... - · PDF filePower Transmission and Distribution s Prospects of Bulk Power EHV and UHV Transmission 5th & 6th Feb, 2007 at India Trade Promotion