Series Compensation References

7/30/2019 Series Compensation References

1/24

Answers for energy.

FACTS Flexible ACTransmission SystemsSeries Compensation


2/242

Reference ListReactive-Power Compensation

Series Compensation

Siemens supplies Fixed Series Capacitors as well as Thyristor-Controlled SCs

and Thyristor Protected Series Capacitors. Siemens Series Capacitor installationsincrease power transfer capacity on existing transmission systems worldwide.

Nowadays, power generators and utilities all over the world are confronted

with greater demands for bulk power flow, lower-cost power delivery,

and higher reliability.

Siemens solutions for advanced power delivery translate

into a number of solid benefits including:

Increase of energy transfer without adding new transmission lines

Direct control of the transmission path, voltage and flow

Minimized delivery cost as generation sources change

High reliability under contingencies

Improvement of power quality


3/243

In-service date Page

01 1990 Kayenta USA 6

02 1993 Montagnais Canada 7

03 1999Imperatriz &Presidente Dutra

Brazil 8

04 1999 Serra da Mesa Brazil 9

05 2002 Ibiuna / Samambaia Brazil 10

06 2003 Tian-Guang China 11

07 2003 Lexington & Valley USA 12

08 2003Maputo &Barberton

Mozambique &South Africa

13

09 2004 So Joo do Piau Brazil 14

1020042005

Midway #1, #2 & #3 USA 15

11 2006 Dayton USA 16

12 2006Eldorado-Lugo &Eldorado-Moenkopi

USA 17

13 2006 Tala India 18

14 2006 Fengjie China 20

15 2008NorthSouthInterconnection III

Brazil 22

16 2009 EastWest India 23

References described

in this brochure

References not described in this brochure

Oriximina, Brazilin service in 2011

Itacoatiara, Brazil

in service in 2011

Cariri, Brazil

in service in 2011

Lugo, USA

in service in 2011

Boshang, China

in service in 2011

Sami, India

in service since 2010

Meerut, India

in service since 2010Yulin, China


Dodoma, Tanzania


Barra do Peixe, Brazil


Rio Verde, Brazil


Lucknow, India


Puti China


Dai Ninh, Vietnamin service since 2006

Gooty, India


Chuddapah, India


Maraba, Brazil


Acailandia, Brazil


Hechi, China


Tecali, Mexico

in service since 2004Juile, Mexico


Vincent #1 & #2


Jacinto, USA


Yangcheng, China


Vincent #3


Atacama, Chile


Lugo, USA



4/244

1012

01

11

02

05

03

09

04

Kayenta

WAPA, USA

165 / 120 / 45 MVAr

230 kV

1990

Lugo

Southern California

Edison, USA

2 x 634 MVAr

500 kV

2011

Lugo

Southern California

Edison, USA

1983

Midway #1 & #3

Southern California

Edison, USA

401 MVAr

500 kV2004/2005

Eldorado-Lugo &

Eldorado-Moenkopi

Southern California

Edison, USA

199 / 162 MVAr

500 kV

2006

TECALI / JUILE

CFE, Mexico

5 x 150 MVAr400 kV

2003

Oriximina

Abengoa, Brazil

2 x 340 MVAr

500 kV

2011

Atacama FSC

GENER

490 MVAr

345 kV

1999

So Joo do Piau

CHESF, Brazil

484 / 437 MVAr

500 kV

2004

Jacinto

ENTERGY, USA

223 MVAr

230 kV

2001

Lexington & Valley FSCs

Dominion Virginia Power, USA

355 / 505 MVAr

500 kV

2003

Montagnais

Hydro-Qubec, Canada

1500 MVAr

765 kV

1993

07

15

Vincent #1 to #3

Southern California

Edison, USA

401 MVAr

500 kV

2000 2002

Ibiuna / Samambaia

FURNAS, Brazil

252 / 765 MVAr

500 kV

2002

NorthSouth

Interconnection III FSC

INTESA, Brazil

200 / 2 x 194 / 130 / 43 MVAr

500 kV

2008

Serra da Mesa

FURNAS, Brazil

107 MVAr

500 kV

1999

Cariri

Abengoa, Braz

2 x 237 MVAr

500 kV

2011

Itacoatiara

Abengoa, Brazil

2 x 237 / 340 MVAr

500 kV

2011

Dayton

ENTERGY, USA

258 MVAr

230 kV

2006

References worldwideUtility Series Compensation delivered by Siemens.


5/245

08

06

13

Imperatriz & Presidente Dutra

ELETRONORTE, Brazil

390 MVAr

500 kV

1999

Maputo & Barberton

MOTRACO, Mozambique

& Republic of South Africa

344 / 535 MVAr

400 kV

2003

Dodoma

TANESCO,Tanzania

180 MVAr

220 kV

2009

EastWest FSCs

Power Grid Corporation

of India, India

2 x 210 / 2 x 180 / 2 x 288 MVAr

400 kV

2009

Tian-Guang

State Power South

Company, China

350 / 55 MVAr500 kV

2003

Puti

Sichuan Electric Power,

China

3 x 315 MVAr

500 kV

2006

14

Dai Ninh

Electricity of Vietnam

202 MVAr

500 kV

2006

Hechi

State Power South

Company, China

762 MVAr500 kV

2003

Yulin

China Southern

Power Grid, China

2 x 286 MVAr

500 kV

2010

Yangcheng

JPEPC, China

2 x 500 MVAr

230 kV

2000

Fengjie

State Grid Corporation

of China, China

2 x 610 MVAr

500 kV

2006

Cuddapah-Gooty


of India, India

4 x 202 MVAr

400 kV

2004

Tala


of India, India

743 / 112 / 716 / 108 MVAr

400 kV

2006

Maraba / Aailndia

ENTE, Brazil

279 / 314 MVAr

500 kV

2004

Sami

Adani Power Limited, India

2 x 212 MVAr

400 kV

2010

Meerut


of India Ltd., India

2 x 412 MVAr

765 kV

2010

16

Lucknow


of India, India

4 x 436 MVAr

400 kV

2007

Boshang

Yunnan Power Grid,

China

2 x 425 / 620 MVAr

500 kV

2011


6/246

KayentaWorlds First 3-Phase Thyristor-Controlled Series Capacitor

In 1990, Siemens completed a joint project with WAPA for the

worlds first transmission system with a continuously variable,

3-phase thyristor-controlled series capacitor installation at theKayenta substation in Arizona, USA.

The series capacitor consists of two 230 kV conventional series

capacitor banks, each rated at 165 MVAr with a single-phase

impedance of 55 Ohms. One of the two 55-Ohm banks is split

into a 40-Ohm and a 15-Ohm segment. This allows the addition

of Thyristor-Controlled Reactors (TCR) in parallel with the

15-Ohm segment.

This provides direct control of the transmission line impedance

and offers several advantages to conventional fixed series

capacitors. The Kayenta Advanced Series Compensation (ASC)

operates in the following manner: when a controlled reactor

is connected in parallel with a series capacitor, the net series

compensation seen by the transmission line is the impedance

that results from the capacitor and reactor. By varying the

impedance of the parallel reactor, the total impedance of the

compensation is changed. The ASC controls the reactor current

as well as the line current, so the ASC can smoothly control

the capacitive impedance from 15 Ohms to 60 Ohms.

Customer WAPA

(Western Area Power Administration)

Project name ASC Kayenta

Location in north-eastern Arizona, USA

in the middle of the 320-kilometer

Shiprock-to-Glen Canyon

230 kV transmission line

Capacitor

rating

55 Ohm / 165 MVAr (conventional)

40 Ohm / 120 MVAr (conventional)

15 Ohm / 45 MVAr (ASC)

Compensation

degree

up to 70 % conventional

up to 100 % TCSC

Thyristor data 100 mm thyristors

3.5 kA continuous current5.5 kV blocking voltage

Digital control

system

Siemens SIMADYN D


7/247

MontagnaisFixed Series Capacitor in Canada

Customer Hydro-Qubec (HQ)

Project name Montagnais FSC

Location Poste Montagnais, Canada

NorthEast Network

Capacitor

rating

30 Ohm, 2300 A, 1500 MVAr

(3 x 476 MVAr)

Compensation

degree

40 %

Digital control

system

Siemens SIMADYN D

Part of New Yorks electric energy is supplied by Hydro-Qubec,

from the hydroelectric power plant Churchill Falls on the coast

of Labrador in Newfoundland. To increase the transferable power

of the 735 kV transmission line from the power plant Churchill

Falls to Montreal a distance of about 1200 km, Hydro-Qubec

decided to install three 3-phase series capacitors at the

Montagnais substation in the Canadian province Qubec. From

Montreal, some of the electricity is transmitted via the HVDC

back-to-back link at Chateauguay in Canada to the network

operated by the New York Power Administration in the USA.

Montagnais is one of the most important facilities in Hydro-

Qubecs eastern power network, because it is not far awayfrom the generators in Churchill Falls.

In 1993, Hydro-Qubec placed an order with Siemens for the

supply and installation of the three series capacitors, because

Siemens was able to fulfill the special technical demands in

accuracy and reaction time needed for the extreme conditions

in the Canadian winter. Siemens was also the first manufacturer

whose surge arresters succeeded in withstanding Hydro-Qubecs

extra tough pressure relief tests for the 735 kV application, involv-

ing a full discharge of a specially set-up bank of original capaci-

tors. The Montagnais series capacitor is able to withstand the

extreme temperatures from 50 C to + 40 C. The series capaci-

tor installation helps to improve the transmission line stability

and is able to compensate up to 40 % of the inductive line im-pedance, thus enhancing the transferable power to 6000 MVA.

USAUSA

CanadaCanada

ChurchillChurchillFallsFalls

MontralMontral


8/248

Imperatriz & Presidente DutraNorth-South Interconnection in Brazil

Customer ELETRONORTE Centrais Eltricas do

Norte do Brazil S.A.

Project name Imperatriz / Presidente Dutra

Location both substations are south of

So Luis, Brazil

Capacitor

rating

34.2 Ohm / 390 MVAr at 1.95 kA

Compensation

degree

36 %

Digital control

system

Siemens SIMADYN D

Brazils national energy holding Electrobrs had been planning

to connect the northern with the southern power networks for

a long time. Finally, the heavy increasing demand for electricenergy in the south decided the issue to build the NorthSouth

Interconnection line. The network in the south, south-east,

central and mid west regions supplies energy to the area of

the country south of the capital, Brasilia, and the network in

the north and north-east provides energy to the areas north-east

of Bahia to Belm on the Amazon delta.

Most of the electric power of both networks is generated in

hydroelectric power plants, for example from the power plant

Xing at the So Francisco river.

The backbone of the interconnection line is the 500 kV trans-

mission line from Imperatriz to Serra da Mesa. The NorthSouth

Interconnection, with its capacity of 1300 MW, enables a more

flexible expansion of the hydro-electric power plants along the

Tocantins river. In 1997, Siemens received the order to supply

three series capacitors as part of the first NorthSouth Inter-

connection in Brazil. The scope consisted of two fixed series

capacitors in the northern network in Eletronortes substations

Imperatriz and Presidente Dutra and one thyristor-controlled

series capacitor in the southern network at FURNAS substation

Serra da Mesa.


9/249

Brazil

BoliviaBolivia

ParaguayParaguay

ArgentiniaArgentinia

ImperatrizImperatriz

Serra daSerra da MesaPeixePeixeurupiGurupi

ColinasColinas MiracemaMiracema

Serra da Mesa

Customer FURNAS Centrais Eltricas S.A.

Project name Serra da Mesa (SdM)

Location north of Brasilia, Brazil

Capacitor

rating

13.27 Ohm (blocked valve) and

15.92 Ohm (TCSC) / 107.46 MVAr

at 1.5 kA

Compensation

degree

56 % (continuous)

715 % (temporary)

TCR data 100 mm 5.5 kV electrically

triggered thyristors

23.9 kV nominal valve voltage

at 3.55 kA

1.123 MJ Valve MOV

87.3 kV protective level

Digital control

system

Siemens SIMADYN D


10/240

Parallel to the Samambaia project, FURNAS required to install

one series capacitor in the 525 kV transmission line from the

Ibiuna to Bateias substation.The turnkey contract for the Ibiuna project was awarded to the

Siemens/Schneider Consortium in September 2001.

The series capacitor bank is designed to have two segments

in series because of the arrangement of the series capacitors

in the AC system and the identical requirements of the FURNAS

specification the designs of the capacitor banks are identical.

The Ibiuna installation was finished in March 2003.

Ibiuna / SamambaiaFixed Series Capacitor in Brazil

Customer FURNAS Centrais Eltricas S.A.

Project name Ibiuna / Samambaia

Location near So Paulo

Capacitor

rating

25.6 Ohm per segment /

total rated power 765 MVAr at 2.23 kA

Compensation

degree

50 %

Digital control

system

Siemens SIMADYN D


11/241

China

GuangxiGuangxi

VietnamVietnamLaosLaosurmaBurma

Customer State Power South Company

Project name Tian-Guang TCSC

Location PingGuo substation,

Guangxi Province, P.R. China

Capacitor

rating

Fixed segment: 29.2 Ohm,

2000 A, 350 MVAr

Controlled segment: 4.15 Ohm to

12.45 Ohm, 2000 A, permanently

operated at 4.57 Ohm, 55 MVAr

Compensation

degree

Fixed segment: 35 %

Controlled segment: 5 %

TCR data Thyristor valve: 10 kV, 2000 A,

light-triggered thyristor (LTT)

Digital control

system

Siemens SIMADYN D

Tian-GuangThyristor Controlled Series Capacitor in China

The increasing demand for electric power in the Chinese

south provinces requires extension of the HV power grid. The

Tian-Guang TCSC and also the Hechi FSC are part of this west-

to-east network improvement. Their location has been carefully

selected, and together with the Tian-Guang and the Gui-Guang

HVDC links they ensure future energy supply and contribute

reliability and improvement for the consumers.

In power systems, TCSCs are mainly used for the purposes of

system transient stability improvement, low-frequency power

oscillation mitigation, system power flow control and subsyn-

chronous resonance mitigation. According to the analysis on

the Tian-Guang TCSC project, the TCSC mainly serves for systemstability improvement and low-frequency oscillation mitigation.

As there are several AC power transmission lines at the same

voltage level and in the same power transmission direction, the

purpose of the construction of Tian-Guang TCSC is to further

improve the capabilities of AC transmission lines within the

South China power grid and improve the capabilities of the whole

network in respect of disturbances. It is recognized that the

installation of a TCSC on inter-regional ties is a good means of

mitigation of interregional low-frequency oscillations. Due to

the fact that a TCSC is adopted in west-to-east power transmis-

sion lines within the South China power grid, the PSS configura-

tions are simplified. Setting of the PSS parameters is easy and

the dynamic stability of the system is improved.


12/242

Customer Dominion Virginia Power

Project name Lexington & Valley FSCs

Location near Rockbridge Bath, Virginia1)

and near Weyers Cave, Virginia2)

Capacitor

rating

13.1 Ohm / 355 MVAr at 3 kA1)

18.7 Ohm / 505 MVAr at 3 kA2)

Compensation

degree

60 %1)

60 %2)

Digital control

system

Siemens SIMADYN D

1) Lexington2) Valley

Lexington & Valley FSCsFixed Series Capacitor in Virginia, USA Gap Less Design

In August 2002 Siemens succeeded in winning a series capacitor

contract with Dominion Virginia Power.

To accommodate increased power generation at the Bath CountyPumping Station, Dominion had to add two series capacitors to

the Virginia 500 kV network in the Bath County Area. Each of

the two transmission lines from the Bath County Pumping Station,

one leading to the Lexington substation and the other leading

to the Valley substation have been equipped with a fixed series

capacitor of 60 % compensation level.

The Valley FSC has been in commercial operation since November

13th, 2003 and the Lexington FSC has been in commercial

operation since December 2nd, 2003.


13/241

Maputo & BarbertonFixed Series Capacitor in Mozambique &

the Republic of South Africa

In May 2002, Siemens received the turnkey contract from

MOTRACO to install two series capacitor banks in the MOTRACO

network. MOTRACO is an independent transmission company

owned in equal shares by three utilities: EdM from Mozambique,

SEB from Swaziland and ESKOM from South Africa. The MOTRACO

network consists of two 400 kV transmission lines from ESKOM

(Camden and Arnot substation) to the Maputo substation. The

transmission line from Camden to Maputo is intersected by a

400 kV busbar in Swaziland at Edwaleni II substation. The bulk

of the energy which is transferred via these transmission lines

is for the Mozal aluminum smelter in Maputo. The capacity ofthe aluminum smelter will be increased. Therefore also the lines

have to be upgraded to cope with the increased power demand.

As part of this upgrade, Siemens supplies the two fixed series

capacitor banks. One bank is installed directly in Maputo sub-

station in the Edwaleni-Maputo line. The second FSC is installed

in Barberton substation approximately halfway between Arnot

power station and Maputo substation close to the city of

Barberton, in the Republic of South Africa. Both FSCs have

been in commercial operation since mid April 2003.

Customer MOTRACO

Project name Maputo FSC

Barberton FSC

Location Maputo, Mozal substation,

Mozambique1)

Barberton substation, near

Nelspruit, in the Republic

of South Africa2)

Capacitorrating

28.44 Ohm / 344 MVAr1)44.24 Ohm / 535 MVAr2)

Compensation

degree

50 %1)

50 %2)

Digital control

system

Siemens SIMADYN D

1) Maputo FSC2) Barberton FSC


14/244

So Joo do PiauFixed Series Capacitors in Brazil

In summer of 2003 the So Joo do Piau Series Compensation

System located in the Brazilian Maranho-Bahia 500 kV AC

network has been awarded to Siemens.The power demand of the growing Brazilian industries requires

an economical solution for an increase of power transfer capa-

bility with the existing lines. Fixed series compensation has

been found as the appropriate choice not only to enable the

desired power increase but also to stabilize the interconnected

networks by reducing the connecting line impedance. Starting

of commercial operation of two capacitors located in two serial

lines was scheduled for August 2004.

So Joo do Piau series capacitor project consists of two series

capacitor installations connected in series on two different lines

entering So Joo do Piau substation. The design of the com-

ponents has been carried out by intensive studies to find an

optimized solution for power transfer increase and stabilization

of the existing network. With a nominal power rating of 484 MVA

for Boa Esperana bank and 437 MVA for Sobradinho bank the

So Joo do Piau series capacitors will provide stable and

increased power transfer through the Maranho-Bahia

550 kV AC system corridor.

Customer CHESF

Project name So Joo do Piau

Location State of Piau, Brazil

Capacitor

rating

52.83 Ohm / 484 MVAr

47.69 Ohm / 437 MVAr

Compensation

degree

70 %

Digital control

system

Siemens SIMADYN D


15/241

Midway #1 and #3Thyristor-Protected Series Capacitors

The Midway #1 and #3 refurbishments are successor projects

of the Vincent TPSC projects.

The two series capacitors are located at PG&Es Midway substa-

tion near Buttonwillow, California. The Midway substation is

also part of the western US 500 kV transmission network.

In September 2003, Siemens received the order to renew the

Midway #1 and #3 series capacitors. The design of the Midway

series capacitors is identical with the Vincent TPSCs, with only

some minor differences in the control and protection system.

The first Midway TPSC #1 will be in commercial operation by

December 2004 and the second installation Midway TPSC #3will be finished about half a year later in June 2005.

Customer Southern California Edison (SCE)

Project name Midway #1 and #3

Location near Buttonwillow, north of

Los Angeles, CA, USA in the

Vincent-to-Midway 500 kV

transmission line

Capacitor

rating

23.23 Ohm / 401 MVAr at 2.4 kA

Compensation

degree

~ 35 %

Thyristor data 125 mm l ight-tr iggered

thyristors

Digital control

system

Siemens SIMADYN D


16/246

DaytonFixed Series Capacitor Texas in USA

July, 2004 The Entergy Corporation awarded three high

voltage transmission projects to Siemens Power Transmission &

Distribution, Inc. The new installations will help Entergy toincrease reliability and capacity on its power transmission

system in order to help meet increasing demand in its Western

Service Area.

The three FACTS (Flexible AC Transmission Systems) projects

will include two Static VAR Compensators (SVC) and one Fixed

Series Capacitor (FSC) that will be built at three primary Entergy

substations in Texas and Louisiana.

The Dayton FSC is basically a copy of the Jacinto FSC project

which was installed by Siemens for Entergy in the year 2001.

The main differences being the higher reactive power

(223 vs. 258 MVAr) and the higher protective level (128.4 vs.

145 kV).

The Dayton FSC system also does not include a Spark Gap but

provision has been made for the inclusion of one at a later date.

Customer ENTERGY Services Inc.

Project name Dayton

Location Dayton Station, Dayton in

Liberty County, Houston, Texas

Capacitor

rating

24.33 Ohm / 258 MVAr at 1.88 kA

Compensation

degree

70 %

Digital control

system

Siemens SIMADYN D


17/241

Eldorado-Lugo &Eldorado-MoenkopiSeries Capacitors in Nevada / USA

In September 2004 Siemens succeeded in winning the contract

for the refurbishment of two series capacitor installations at

Edisons Eldorado Substation southwest of Boulder City, Nevada.

As a result of new power generation installed in the Las Vegas

area the fault duty on the 500 kV transmission network is above

the design ratings of the existing equipment and therefore the

two series capacitors Lugo and Moenkopi at the Eldorado

Substation need to be replaced.

It is the intention to increase the power transfer between Arizona /

Nevada and Southern California within the next few years.

The so called Eldorado-Moenkopi SC is in series with the transmis-sion line leading to the Moenkopi subsation in Arizona and the

Eldorado-Lugo SC is in series with the transmission line leading

to the Lugo substation in Southern California. The Lugo series

capacitor installation will consist of two segments, one segment

will be a FSC and the other segment will be a TPSC.

The Moenkopi series capacitor installation will consist of three

segments, two segments will be FSCs and the other segment

will be a TPSC.

The Lugo FSC is in service since March 15th, 2006 and the

Moenkopi FSC since June 1st, 2006.

Customer Southern California Edison (SCE)

Project name Eldorado

Location near Boulder City, NV, USA

Capacitor

rating

199 MVAr / segment1)

162 MVAr / segment2)

Compensation

degree

17,5 % / segment1)

11,7 % / segment2)

Digital control

system

Siemens SIMATIC TDC

1) Lugo2) Moenkopi


18/248

IndienIndien

GorakhpurGorakhpurPurneaPurnea

NepalNepal

ChinaChinaPakistanPakistan

GorakhpurGorakhpurMuzaffarpurMuzaffarpur

KanpurKanpur

TALAThyristor Controlled Series

Capacitor in India longest in the World

The Power Grid Corporation of India Ltd. (PGCIL) is constructing

a 475 km long overhead line from Purnea in the state of Bihar

via Muzafarpur to Gorakhpur in the state of Uttar Pradesh. Thisproject transmits surplus energy from eastern India to the con-

urbations around Delhi, where the existing generation capacity

can no longer meet demand.

For the systems in Purnea and Gorakhpur respectively, Siemens

is supplying two thyristor-controlled Series Compensation Sys-

tems and two fixed compensation systems. Series compensation

systems enhance the transmission capacity of the overhead line

and ensure stability in the grid. The light-triggered thyristors

(LTTs) used are notable for their very high current carrying

capacity and blocking voltage. Direct light-triggered thyristors

make it possible to reduce the number of electronic components

in the converter valves by about 80 %. A further advantage of

this modern thyristor design is that all the firing and monitoring

electronics are at earth potential; the equipment is consequent-

ly accessible during operation.

Siemens is the only supplier to use LTTs in so-called FACTS

(Flexible AC Transmission System) projects. With energy markets

developing and expanding dynamically all over the world, such

solutions provide significant ways of improving the characteristics

of high-voltage transmission networks.

This order underlines the capability of Siemens as undisputed

market- and technology leader in the controlled series compen-

sation technology segment. The project was completed and put

into operation early 2006.

Siemens compensation equipment improves transmission

capacity in Indian high voltage grid

Siemens received this order in May 2004 from the Power GridCorporation of India Ltd. in New Delhi to set up four compensa-

tion systems featuring state of the art thyristor technology. The

purpose of this new equipment is to improve the transmission

performance and the reliability of the 400 kV overhead line

between Purnea in eastern India and Gorakhpur in the north

of the country. The order includes the construction and installa-

tion work involved in the systems, along with supply and engi-

neering of all the high-voltage components, the control and

protection devices and the thyristor valves.


19/241

Purnea FSC &

Gorakhpur FSC

Purnea TCSC &

Gorakhpur TCSC

Customer Power Grid Corporation of India, Ltd. Power Grid Corporation of India, Ltd.

Project name TALA Project TALA Project

Location New Delhi, India New Delhi, India

Capacitor

rating

24.2 Ohm / 743 MVAr

3200 A nominal current1)

23.32 Ohm / 716 MVAr


3.03 Ohm / 3.64 Ohm / 112 MVAr


2.92 Ohm / 3.510 Ohm / 108 MVAr


Compensation

degree

40 %1)

40 %2)515 %3)

515 %4)

Thyristor

valve data

125 mm light-triggered thyristors3) 4)

Digital control

system

SIMATIC TDC SIMATIC TDC

1) Purnea FSC 2) Gorakhpur FSC 3) Purnea TCSC 4) Gorakhpur TCSC


20/240

FengjieFengjie Series Compensation System in China

In the summer of 2005, Siemens was awarded a contract to install

the Fengjie Series Compensation System 500 kV AC network.

Fixed series compensation (FSC) was found as the appropriatesolution to provide an increase of power transfer capability using

existing lines, and to stabilize the interconnected networks by

reducing the connecting line impedance. The Fengjie 500 kV

series capacitor station is about 130 km away from Wanxian

Substation, where one of the two 500 kV lines begins, connecting

Chuanyu grid to central Chinas mains. Within this project, planned

by the State Grid Corporation of China, Fengjie 500 kV series

compensation station is an important asset. It has a capacity of

2 x 610 MVAr and a compensation level of 35 %. Its FSC system

consists of two capacitors, one in each of the parallel lines located

in Fengjie Substation. It connects Wanxian Substation in the west

with Longquan Substation in the east over a distance of 360 km.

Project Outline

Fengjie 500 kV series compensation station is an important station

for the project planned by the State Grid Corporation of Chinato connect Chuanyu grid to central Chinas mains. Fengjie 500 kV

series compensation station will have a capacity of 2 x 610 MVAr

and a compensation level of 35 %, and its compensation equip-

ment will be of fixed series capacitor (FSC) type. The project now

has two circuits of 500 kV lines, which start in the west from

Wanxian 500 kV Substation and extend to the east to Longquan

500 kV Converter Station with each circuit 360 km in length.

Fengjie 500kV Series compensation station is about 130 km away

from Wanxian 500 kV Substation at Fengjie County, Wanzhou

District, Chongquing City. Fengjie 500 kV series compensation

station began operation in June, 2006.


21/242

Customer State Grid Corporation of China

Project name Fengjie

Location Fengjie County, Wanzhou District,

Chongquing City

System fixed Series Capacitor

Capacitor

rating

35.3 Ohm / 2 x 610 MVAr

Compensation

degree

35 %


22/242

NorthSouthInterconnection IIIRenewable Energy Resources for Megacities

The major part of Brazils energy is generated by hydroelectricpower plants. The hydrologic conditions in the north of Brazil

are well suited to produce enough hydroelectric power to fulfill

the energy demand of the south.

In 2006, after the first two north-south interconnection lines had

proved their worth, the Brazilian electricity regulatory agency

(ANEEL) awarded a contract for a third parallel line, NorthSouth

Interconnection III. In the middle section of the transmission

line from Colinas (Tocantis) down to Serra da Mesa II (Gois),

power had to be transmitted over the enormous distance of

696 km. The contract for this segment, the longest of the three

segments, was awarded to INTESA, a consortium of Eletronorte,

Chesf, Engevix, and a private investor. To avoid losses and prevent

voltage stability problems in this line segment, known as Lot B,

Siemens, in a consortium with Areva, supplied five fixed series

capacitors (FSCs), line protection, and substation HV equipment.

Siemens, as the consortium leader, installed four FSCs at

Eletronortes substations Colinas, Miracema, and Gurupi, and

one at Furnas substation Peixe II, within a delivery time of

14 months. So an interconnection between north and south

was indispensable.

Due to the high complexity of power grids, the degree of line

compensation had to be determined carefully for each section.

(Line compensation should definitely be as high as possible;

however, if it exceeds 70 %, sub-synchronous resonances appear,

and these should be avoided).

Customer INTESA

Project name NorthSouth Interconnection I II

Location in Eletronortes substations in

Colinas, Miracema, and Gurupi

in Furnas substation Peixe II

System fixed series capacitor

Capacitor

rating

200 MVAr FSC1)

2 x 194 MVAr FSCs2) 3)

130 MVAr FSC3)

343 MVAr FSC4)

Compensation

degree

51 %1)

70 %2) 3)

70 %3)

68 %4)

1) Colinas 2) Miracema 3) Gurupi 4) Peixe II


23/242

Customer Powergrid Corporation of India, Ltd.

Project name Fixed Ser ies Compensation at

Lucknow, Bareilly, and Unnao

substations associated with

enhancement of transmission

capacity in the east-west corridor

of the northern region

Location 400 kV Gorakhpur-Lucknow lines

at Lucknow Substation

400 kV Bareilly-Mandolla linesat Bareilly Substation

400 kV Unnao-Bareilly lines

at Unnao Substation

System fixed series capacitor

Capacitor

rating

2 x 189 MVAr FSCs1)

2 x 187 MVAr FSCs2)

2 x 311 MVAr FSCs3)

Compensation

degree

30 %1)

30 %2)

45 %3)

Digital control

system

SIMATIC TDC

1) Lucknow 2) Bareilly 3) Unnao

EastWest FSCsFixed Series Compensation

at Lucknow, Bareilly, and Unnao

Powergrid Corporation of India, Ltd., an Indian government

entity, is the only agency responsible for transmission of power

across the country. In its current five-year plan, the Indian govern-

ment has set the target Power for All by 2012. In India, where

efficiency of power transmission is now approximately 52 %,

the enhancement of transmission capacity will play a vital role

in achieving the target.

The project focuses on the enhancement of the transmission

capacity of the northern grid. Sites are at Lucknow, Bareilly, and

Unnao, in the state of Uttar Pradesh. Unnao Substation belongs

to the Uttar Pradesh state government, while Lucknow andBareilly belong to Powergrid. The Bareilly FSC plant will have local

control as well as remote control from Powergrids Lucknow

Substation.


24/24

Published by and copyright 2010:

Siemens AG

Energy Sector

Freyeslebenstrasse 191058 Erlangen, Germany

Siemens AG

Energy Sector

Power Transmission Division

Power Transmission Solutions

Freyeslebenstrasse 1

91058 Erlangen, Germany

www.siemens.com/energy/facts

For more information, please contact

our Customer Support Center.

Phone: +49 180/524 70 00

Fax: +49 180/524 24 71

(Charges depending on provider)E-mail: [email protected]

www.siemens.com/energy-support

Power Transmission Division

Order No. E50001-G610-A112-X-4A00

Printed in Germany

Dispo 30003

TH 150-100403 471402 WS 06101.

Printed on elementary chlorine-free bleached paper.

All rights reserved.

Trademarks mentioned in this document

are the property of Siemens AG, its affiliates,

or their respective owners.

Subject to change without prior notice.

The information in this document contains general

descriptions of the technical options available, which

may not apply in all cases. The required technical

options should therefore be specified in the contract.

Date post:	14-Apr-2018
Category:	Documents
Upload:	iontatian
View:	223 times
Download:	0 times

Series Compensation References

Documents