www.siemens.com/energy/facts
FACTS – Flexible AC
Transmission Systems
Static Var Compensators
Answers for energy.
Reference List
Static Var Compensation – rely on our experience
Nowadays, power producers and providers throughout the
world are faced with greater demands for bulk power flow,
lower-cost power delivery, and higher reliability. Siemens as
a leading manufacturer of FACTS devices delivers systems
throughout the world.
References not described in this brochure
2
■
Lakehead, Canada
in service since 2010
■
Limpio, Paraguay
in service since 2003
■
Harker, UK
in service since 1993
■
Alligator Creek, Australia
in service since 2009
■
Funil, Brazil
in service since 2001
■
Eddy County, USA
in service since 1992
■
Bellaire, USA
in service since 2008
■
La Pila, Mexico
in service since 1999
■
Pelham I + II, UK
in service since 1991
■
Crosby, USA
in service since 2008
■
Cerro Gordo, Mexico
in service since 1998
■
Kemps Creek I + II, Australia
in service since 1989
■
Strathmore, Australia
in service since 2007
■
Chinú, Colombia
in service since 1998
■
Brushy Hill, Canada
in service since 1986
■
Sinop, Brazil
in service since 2007
■
Muldersvlei, South Africa
in service since 1997
■
Banabuiu, Brazil
in service since 1983
■
São Luis, Brazil
in service since 2007
■
Rejsby Hede, Denmark
in service since 1997
■
Milagres, Brazil
in service since 1983
■
Nopala, Mexico
in service since 2007
■
Adelanto & Marketplace, USA
in service since 1994/1995
■
Fortaleza, Brazil
in service since 1982
■
Segaliud & Dam Road, Malaysia
in service since 2006
■
Jember, Indonesia
in service since 1994
■
Zem Zem, Libya
in service since 1982
■
Ahafo, Ghana
in service since 2006
■
Feckenham, UK
in service since 1994
■
Shinyanga & Iringa, Tanzania
in service since 2006
■
Drakelow, UK
in service since 1994
Siemens solutions for advanced
power delivery bring a number
of major benefits including:
■ Improvement of system stability
and power quality
■ High reliability under system
contingencies
■ Steady state and dynamic
voltage control
The total installed capacity of Siemens
Static Var Compensators exceeds
30,000 MVAr granting a true global
experience and customer support.
■ Reactive power control
of dynamic loads
■ Damping of active power
oscillations
References described in this brochure
In-service date
01
Page
2011
2012
Hiteen, Qassim & Afif
Saudi Arabia
6
02
2011
Nanticoke
Canada
7
03
2011
Chevire
France
8
04
2010
Elmhurst
USA
9
05
2009
Islington
New Zealand
10
06
2008
Greenbank & Southpine
Australia
11
07
2007
Railways & Nebo
Australia
12
08
2006
Radsted
Denmark
14
09
2006
Devers
USA
15
10
2006
2005
Porter & Ninemile
USA
16
11
2004
Siems
Germany
17
12
2002
Bom Jesus da Lapa
Brazil
18
13
1995
Impala, Illovo & Athene
South Africa
19
3
References worldwide
Utility Static Var Compensators delivered by Siemens
Bellaire
Center Point Energy, USA
(0/140 MVAr)
138 kV
2008
Crosby
Center Point Energy, USA
(0/140 MVAr)
138 kV
2008
Eddy County
SPS, USA
(–50/100 MVAr)
230 kV
1992
Lakehead
Hydro One, Canada
(–40/45 (60) MVAr)
230 kV
2010
Nanticoke
Hydro One, Canada
(0/350 MVAr)
500 kV
2011
Brushy Hill
NSPC, Canada
(–20/120 MVAr)
138 kV
1986
Elmhurst
ComEd, USA
2 x (0/300 MVAr)
230 kV
2010
Adelanto &
Marketplace
WSCC, USA
(0/388 MVAr)
500 kV
1994/1995
La Pila
CFE, Mexico
(–70/200 MVAr)
230 kV
1999
08
11
Devers
SCE, USA
(–110/330 (440/1 h) 605) MVAr
500 kV
2006
02
04
Chevire
RTE, France
(–100/100 (250) MVAr)
225 kV
2011
03
09
Porter & Ninemile
Entergy, USA
(0/300 MVAr)
138/230 kV
2005/2006
10
Cerro Gordo
Luz y Fuerza, Mexico
(–75/300 MVAr)
230 kV
1998
Nopala
CFE, Mexico
(–90/300 MVAr)
400 kV
2007
12
Chinú
ISA, Colombia
(–150/250 MVAr)
500 kV
1998
Bom Jesus da Lapa
Enelpower, Brazil
(–250/250 MVAr)
500 kV
2002
Funil
CHESF, Brazil
(–100/200 MVAr)
230 kV
2001
Sinop
ELETRONORTE, Brazil
(–20/55 MVAr)
230 kV
2007
4
Milagres
CHESF, Brazil
(–70/100 MVAr)
230 kV
1983
Banabuiu
CHESF, Brazil
(–70/100 MVAr)
230 kV
1983
Fortaleza
CHESF, Brazil
(–140/200 MVAr)
230 kV
1982
São Luis
ELETRONORTE, Brazil
(–100/150 MVAr)
230 kV
2007
Limpio
ANDE, Paraguay
(–150/250 MVAr)
220 kV
2003
Ahafo
CONCO, Ghana
(–40/0 MVAr)
161 kV
2006
Harker
NGC, UK
(–75/150 MVAr)
275 kV
1993
Drakelow
NGC, UK
(–75/150 MVAr)
275 kV
1994
Feckenham
NGC, UK
(–75/150 MVAr)
275 kV
1994
Pelham I + II
NGC, UK
(–75/150 MVAr)
400 kV
1991
Rejsby Hede
ELSAM, Denmark
(–8/8 MVAr)
15/3 kV
1997
Radsted
SEAS-NVE, Denmark
(–65/80 MVAr)
132 kV
2006
Hiteen
Saudi Electricity Company,
Saudi Arabia
(–200/600 (800) MVAr)
380 kV
2011
Qassim
Saudi Electricity Company,
Saudi Arabia
(–150/450 MVAr)
132 kV
2011
Afif
Saudi Electricity Company,
Saudi Arabia
(–50/100 MVAr)
33 kV
2011
Siems
E.ON Netz GmbH, Germany
(–100/200 MVAr)
380 kV
2004
Zem Zem
ELPCO, Libya
(–50/25 MVAr)
230 kV
1982
01
Segaliud & Dam Road
SESB, Malaysia
(–60/60 MVAr)
132/275 kV
2006
Jember
PLN, Indonesia
(–25/50 MVAr)
150 kV
1994
13
Railways & Nebo
Powerlink, Australia
Refurbishments
(–80/260 MVAr)
132/275 kV
2007
Greenbank & Southpine
Australia
(–100/250 (350) MVAr)
275 kV
2008
07
06
Shinyanga & Iringa
TANESCO, Tanzania
(–30/35 MVAr)
220/220 kV
2006
Impala,
Illovo & Athene
ESKOM, South Africa
(–300/100 MVAr)
275/275/400 kV
1995
Muldersvlei
ESKOM, South Africa
(–150/200 MVAr)
400 kV
1997
05
Alligator Creek
Powerlink, Australia
(–80/150 (230) MVAr)
132 kV
2009
Strathmore
Powerlink, Australia
(–80/180 (260) MVAr)
275 kV
2007
Islington
Transpower, New Zealand
(–75/150 MVAr)
220 kV
2009
Kemps Creek I + II
ECNSW, Australia
(–100/150 MVAr)
330 kV
1989
5
Hiteen, Qassim & Afif
Siemens to supply technology for stabilization
of high-voltage transmission network in Saudi Arabia
Siemens will supply three static Var compensators (SVCs)
for different high-voltage levels to Riyadh-based Saudi
Electricity Company (SEC) for stabilization of the country’s
60-Hertz power transmission network. The parallel compensation systems will be deployed at three Saudi sites in the
Hiteen, Quassim and Afif substations and are scheduled to
be ready for operation between mid-2011 and early 2012.
“We are pleased that our field-proven technology will be
deployed to stabilize the Saudi power transmission network,” said Udo Niehage, CEO of the Power Transmission
Division of Siemens Energy. The three systems ordered
are intended for the 380-kV, 132-kV and 33-kV voltage
levels and will have a dynamic compensation capacity
of as much as 800 MVAr.
380 kV, 60 Hz
Technical Data
Hiteen
Qassim
Afif
Customer
Saudi Electricity Company, Saudi Arabia
System voltage
380 kV/60 Hz
132 kV/60 Hz
Transformer
4 x 200 MVAr
4 x 150 MVAr
Operating range
–200/600
(800) MVAr
–150/450
MVAr
–50/100
MVAr
2 x TCR
2 x TSC
2 x Filter
1 x TCR
1 x TSC
3 x Filter
Definition of SVC 2 x TCR
branch circuits
2 x TSC
2 x Filter
MSCDN
132 kV, 60 Hz
33 kV, 60 Hz
Filter 2
Filter 2
CF2
CF2
LF2
LF2
L TCR 1
L TCR 1
2
LTSC 1
L TCR 2
2
LTSC 2
L TCR 1
2
LF1
LTSC 1
LTSC 2
L TCR 2
2
CF1
TCR 1
CTSC 1
TSC 1
L TCR 2
2
CTSC 2
TSC 2
TCR 2
CF1
L TCR 1
L TCR 1
2
LMSC
Filter 1 MSC
Hiteen
TCR 1
Qassim
Iraq
Iran
Egypt
Saudi Arabia
Sudan
Oman
Yemen
6
LTSC 1
2
LF1
CMSC
L TCR 1
2
33 kV/60 Hz
CTSC 1
TSC 1
CTSC 2
TSC 2
2
L TCR 2
2
TCR 2
LF1
LF2
CF1
Filter 1
TCR 1
Filter 1
Afif
LF3
CF2
CF3
Filter 3
Filter 2
CTSC 1
TSC 1
Nanticoke
New Static Var Compensator (SVC) for Nanticoke in Canada
In August 2009 Siemens signed the turnkey contract
for engineering, delivery of components, erection and
commissioning for the Static-Var-Compensators (SVC)
at the Nanticoke substation in Canada. The SVC has a
nominal operating range of 0 MVAr to 350 MVAr capacitive. The customer, Hydro One, requires the SVC to facilitate post contingency voltage stability in their 500 kV
grid associated with the planned shutdown of a central
4000 MW coal-fired generating source.
The Nanticoke SVC includes 5 TSC branches and is
equipped with a redundant contol system and four
single-phase transformers. Start of commercial
operation is scheduled for mid 2011.
Technical Data
Customer
Hydro One, Canada
System voltage
500 kV, 60 Hz
Transformer
4 x 117 MVAr
Operating range
0–350 MVAr
Definition of SVC
branch circuits
5 x TSC
500 kV, 60 Hz
LTSC 1
LTSC 2
LTSC 3
LTSC 4
LTSC 5
CTSC 1
CTSC 2
CTSC 3
CTSC 4
CTSC 5
TSC 1
TSC 2
TSC 3
TSC 4
TSC 5
Canada
United States
of America
7
Chevire
Strengthening the 225 kV network in Brittany, France
A new Static Var Compensator (SVC) in RTE’s existing
225 kV Cheviré substation is scheduled to be energized
in Nantes, in the north-west of France by end of October
2011.
The SVC will provide dynamic control of the 225 kV
network voltage of the Brittany region during high
demand periods as, in the past, Brittany network was
one of the weakest in France. The SVC output will range
from 100 MVAr inductive to 100 MVAr capacitive at 225 kV
and additionally contain and control one mechanically
switched capacitor bank of 150 MVAr.
Technical Data
Customer
RTE, France
System voltage
225 kV/50 Hz
Transformer
100 MVAr
Operating range
100/100 (250) MVAr
Definition of SVC
branch circuits
1 x TCR
1 x TSC
1 x Filter
MSC
RTE is managing the largest network in Europe, ensuring
connections between France and its neighbors. The utility
is an essential link in the European electricity market. It
takes part in constructing the European electricity market
by playing a structuring role, thus contributing to better
use of the different sources of energy on a European level.
The SVC from Siemens will help to stabilize the RTE network especially in the Brittany region.
225 kV, 50 Hz
L TCR 1
2
LTSC 1
LF1
CF1
CMSC
LMSC
L TCR 1
2
TCR 1
Belgium
Germany
Luxembourg
France
Switzerland
Italy
Spain
8
CTSC 1
TSC 1
Filter 1
MSC
The Elmhurst SVCs –
Enhancement of power availability and reliability for
ComEd’s power grid in the area of Chicago, Illinois
In November of 2008 Siemens Energy, Inc. was awarded
a turnkey contract for two 138 kV Static Var Compensators
(SVC’s) by Commonwealth Edison Company (ComEd) for
the Elmhurst Substation in Chicago, USA. The installation
of the Elmhurst SVCs will contribute to the stabilization
of the Northeast Subzone (NESZ) within ComEd’s heavily
populated northern Illinois service territory. This will
be the first SVC application that ComEd has awarded for
installation in their system.
Commonwealth Edison Company (ComEd) is a unit of
the Chicago-based Exelon Corporation (NYSE: EXC), one
of the nation’s largest electric utilities. It’s mission is to
maintain the performance of its electrical transmission
and distributions systems of its region while providing
the customers with reliable and economical electrical
service. Two Siemens’ SVCs with an availability of nearly
100 % will be installed at the Commonwealth Edison
substation in Elmhurst, to maintain transmission stability
into the future. The turnkey contract includes all equipment and civil works for two identical SVCs, rated at
0/+300 MVar each. One SVC consists of three Thyristor
Switched Capacitors (TSC) branches.
During normal operation the SVCs will only be controlling
the existing Mechanically Switched Capacitor Banks (MSCs)
at Elmhurst to provide steady state VAR support. In case of
voltage drop, the TSC’s will respond immediately and offer
voltage stability.
Technical Data
Customer
ComEd, USA
System voltage
138 kV/60 Hz
Transformer
300 MVAr
Operating range
2 x (0/300) MVAr
Definition of SVC
branch circuits
3 x TSC
138 kV, 60 Hz
LTSC 1
LTSC 2
LTSC 3
CTSC 1
CTSC 2
CTSC 3
TSC 1
TSC 2
TSC 3
Using the TSC’s only in case of an emergency avoids
additional losses to the grid.
Canada
United States of America
9
Islington
Voltage stabilization around Christchurch
System studies by Transpower, the transmission utility
in New Zealand, identified insufficient dynamic reactive
support under some situations, for satisfactory voltage
recovery following a system disturbance in the region
surrounding Christchurch in the South Island.
In March 2007 Siemens Energy was awarded a turnkey
contract for a SVC at Islington substation. The installed
SVC has a nominal swing range of 75 MVAr inductive
to 150 MVAr capacitive. The SVC consists of a thyristor
controlled reactor (TCR), thyristor switched capacitors
(TSC) and 2 fixed harmonic filters. The SVC is connected
to the 220 kV bus with a dedicated power (3rd party)
transformer.
As turnkey contractor, Siemens was responsible for project
management, engineering, procurement, delivery, civil
and assembly works as well as site testing & commissioning. Siemens Germany delivered HV switchgear, valves
and associated cooling system, control & protection (C&P)
systems, Trench reactors and capacitors.
The local Siemens team (on-shore) based in AUS/NZ
managed the total project and delivered a successful
project on time by carefully managing on-shore and
off-shore resources & third-party local suppliers and
sub-contractors. The result was an efficient progress
of the sequential civil works, construction, installation
and commissioning periods. Transpower particularly
commended Siemens on construction site management
and safety performance.
The Islington SVC entered commercial operation in
September 2009.
New Zealand
10
Technical Data
Customer
Transpower, New Zealand
System voltage
220 kV/50 Hz
Transformer
3 x 50 MVAr
Operating range
–75/150 MVAr
Definition of SVC
branch circuits
1 x TCR
1 x TSC
1 x Filter
220 kV, 50 Hz
L TCR 1
2
LTSC 1
LF1
CF1
L TCR 1
2
TCR 1
CTSC 1
TSC 1
Filter 1
Greenbank & Southpine
Voltage support to the greater area of Brisbane
Technical Data
Customer
Powerlink, Australia
System voltage
275 kV/50 Hz
Transformer
250 MVA
Operating range
–100/250 (350) MVAr
Definition of SVC
branch circuits
1 x TCR
2 x TSC
3 x Filter
In April 2007 Siemens Energy was awarded a turnkey
contract for two SVCs at Greenbank and South Pine
substations in the South East Queensland (SEQ) 275 kV
grid of Australia. With the installation customer Powerlink
plan to provide sufficient power compensation and to
add additional voltage support to the greater area of
Brisbane by dynamic reactive power compensation.
275 kV, 50 Hz
Filter 2
CF1
LF1
The SVCs have a nominal operating range of 100 MVAr
inductive to 250 MVAr capacitive with an overload
of up to 350 MVAr for one hour. Each SVC consists of
one thyristor controlled reactor (TCR), two thyristor
switched capacitors (TSC) and three fixed filter circuits
for harmonics.
Being the turnkey contractor, Siemens was responsible
for design engineering, delivery, civil and assembly works
as well as site testing. Transformers were manufactured
locally in Australia and Siemens Germany delivered the
core technology, i.e. thyristor valves and the SVC control &
protection (C&P) system, assembled and tested.
The successful team effort by the international management team achieved the completion for both sites on
time. Greenbank and Southpine SVCs started operation
in 2008.
L TCR 1
2
LTSC 1
LTSC 2
LF1
CF1
LF3
CF3
CMSC
L TCR 1
2
TCR 1
CTSC 1
TSC 1
CTSC 2
TSC 2
LMSC
Filter 1 Filter 3 MSC
Australia
11
Refurbishment of the Nebo SVC
Just five months delivery time for a TSC-Valve
In spring 2005 the refurbishment of Powerlink’s Nebo
SVC (originally built by a competitor) was awarded
to Siemens. The scope of work for this SVC, consisiting
of a Thyristor Switched Capacitor (TSC) and a Thyristor
Controlled Reactor (TCR) branch, included the thyristor
valves and accessories, the thyristor cooling system
and the complete control and protection system.
Since the TSC plays an important role in Powerlink’s
network, the contract was divided into two parts,
the first of which placed two major challenges.
■
■
To replace the damaged TSC valve in only five
months – and to integrate a Siemens TSC valve into
a competitor’s control and protection system. The
key to success was a very detailed status quo investigation including thorough checks of all interfaces –
and minute logistic planning.
The complete Control and Protection System and
the TCR valve were successfully refurbished and
Powerlink took over the complete refurbished SVC
even before the contractual date of practical
completion.
Oonooie
Mackay
Nebo
Coppabella
Moranbah
Mt. McLaren
Dysart
Gregory
Rockhampton
Blackwater
Australia
12
Grantleigh
Dingo
Technical Data
Customer
Powerlink, Australia
System voltage
275 kV/50 Hz
Transformer
180 MVA
Operating range
+ 260 MVAr (capacitive) to
– 80 MVAr (inductive)
Definition of SVC
branch circuits
1 x TCR
1 x TSC
2 x STF
SVCs for railway system
A 48-hours outage solution from Siemens
encompasses the remote control of the SVCs. To support
the coal transport system’s reliability, the SVCs had to
remain in service as long as possible throughout the
refurbishment project.
Only Siemens was able to offer a solution that limited
the outage time per site to 48 hours: This was achieved
by introducing a mobile SVC solution that can be used
during the main refurbishment work on each site.
Thus, shutdown is only required to re-establish connections to the mobile system after disconnecting the
existing system and, of course, for testing. The Railway
SVC refurbishment project was completed at the end
of 2007.
At almost the same time as the Nebo project, Powerlink
placed another refurbishment order for nine SVCs in
their network. These SVCs are supporting an important
railway system in central Queensland used for transporting coal from the inland mines to the coal terminals at
Queensland’s coastline. The scope of work included the
replacement of the thyristor valves, the cooling system
and the web based control and protection system, which
13
Radsted
An SVC, that controls voltage fluctuations
caused by an offshore windpark
Technical Data
Norway
Sweden
Denmark
Copenhagen
Netherlands
Poland
Germany
14
System voltage
132 kV/50 Hz
Transformer
80.2 MVA
Operating range
+ 80.2 MVAr (capacitive) to
– 65 MVAr (inductive)
Definition of SVC
branch circuits
12-pulse configuration
2 x TCR
2 x Filters
132 kV, 50 Hz
Y
Siemens offered a special solution for this project: the
SVC has a 12-pulse configuration consisting of a TCR
(Thyristor Controlled Reactor) and a filter in each of the
two secondary circuits of the 3-winding step-down power
transformer. One of the transformer’s secondary winding
is connected in star, while the other is connected in delta.
The delivered high-pass filters are tuned to the 11th
harmonic and are connected in star. The 12-pulse configuration has the advantage that due to the phase shift in
the two secondary busbars of the SVC, the 5th, 7th,
17th and 19th harmonics produced by each of the TCR
branches cancel each other out, helping to meet the
stringent harmonic requirements.
SEAS-NVE, Denmark
Y
SEAS-NVE, the largest utility in Denmark operates the
Nysted Offshore Windpark located south of the island
of Lolland. Voltage fluctuations caused by this facility
lead to voltage stability problems in the 132 kV transmission system. In June 2005, Siemens was awarded a turnkey project for the construction of an SVC located on the
island of Lolland. It provides the necessary reactive power
balance for the system, helps to improve voltage quality
and increases system stability.
Customer
Δ
LTCR 1
LTCR 2
LF 1
RF 1
CF 1
TCR 1
Filter 1
LF 2
RF 2
CF 1
Filter 2
TCR 2
Furthermore Siemens took special care to fulfill the customer’s
requirements in terms of noise reduction and architectural
appearance. Therefore, the SVC was completely housed in
a “barn-type” building equipped with special sound muffling
materials and components. The buildings height was kept
below 6 meters, made possible by optimizing the equipment configuration inside.
Devers
Strengthening the transmission path
between Arizona and California
Technical Data
Customer
SCE, USA
System voltage
525 kV/60 Hz
Transformer
4 x 100 MVA
Operating range
+ 330 MVAr up to
– 110 MVAr (inductive)
+ 440 MVAr capacitive
for one hour
One of the largest SVCs in the US is located at Devers
500 kV substation, near Palm Springs, California. The
Devers SVC was ordered by SCE (Southern California
Edison) as a turnkey project in September 2005 to
strengthen the Devers-Palo Verde transmission path
from Arizona to California. Since it was put into commercial operation in September 2006 the SVC adds additional
voltage support to the Palm Springs area, thus SCE can
increase its import transmission capability from Arizona
during high demands period.
+ 605 MVAr max.
Definition of SVC
branch circuits
2 x TCR
3 x TSC
2 x Filters
MSC
525 kV, 60 Hz
Filter 2
The full capacitive output of the SVC of 330 MVAr is
provided by two TSC branches and two filter branches.
The capacitive output of 440 MVAr for 1 h is provided
by three TSC branches, two filter branches and one TCR
in operation. The SVC’s full inductive output of 110 MVAr
is provided by two TCR branches operating in parallel
with the filters. In addition to the SVC, an MSC of 165 MVAr
connected to the 525 kV bus was included in the scope
of supply, conforming a Static Var System (SVS) with
total capacitive output of 605 MVAr.
CF2
LF2
L TCR 1
2
LTSC 1
LTSC 2
LTSC 3
L TCR 2
2
LF1
CF1
CMSC
L TCR 1
2
TCR 1
CTSC 1
TSC 1
CTSC 2
TSC 2
CTSC 3
TSC 3
L TCR 2
2
TCR 2
L MSC
Filter 1
MSC
Los Angeles
San Diego
Co
San Francisco
lor
ado
United States
of America
Phoenix
Mexico
15
Porter & Ninemile
Application of Static Var Compensators in Entergy’s system
to address voltage stability issues
Technical Data
Based on planning studies, two major load centers
(The Westbank area near New Orleans and the
Woodlands area just north of Houston) in Entergy’s
network were identified as areas with potential voltage
stability problems.
After evaluation of technical, economical and reliability
factors, SVCs were considered as the preferred solution
for both of these areas. In conjunction with Entergy’s
SVC design specifications, two SVCs and a Fixed Series
Capacitor (FSC) were awarded on a turnkey basis to
Siemens Power Transmission Division in 2004.
The first 300 MVAr SVC was commissioned at the
Ninemile 230 kV station in the New Orleans area in
May 2005. The second 300 MVAr SVC at Porter 138 kV
station as well as the new FSC at Dayton Substation
entered into operation in Entergy’s Western Region
near Houston, Texas in April 2006.
Denver
St Louis
United States of America
Co
lor
ad
o
Chicago
Ar
Santa Fe
ka
Phoenix
ns
as
Dallas
New Orleans
Rio
Mexico
Gr
Porter
Houston
an
de
Monterrey
16
Ninemile
Gulf of
Mexico
Customer
Entergy, USA
System voltage
230 kV/60 Hz (Ninemile)
138 kV/60 Hz (Porter)
Transformer
4 x 100 MVA each SVC
Operating range
+ 300 MVAr (capacitive) to
0 MVAr (inductive)
Definition of SVC
branch circuits
3 x TSC
Siems
The first utility SVC in Germany
Technical Data
The HVDC Baltic Cable (with a transmission capacity
of +/–600 MW) was constructed in the early nineties
to link the power systems of Germany and Sweden.
To ensure optimum dynamic system operation the original
plan was to connect the Herrenwyk HVDC converter
station in Germany to the 380 kV grid. However, due
to changes in the European power market, this connection
was abandoned and the HVDC link was consequently
connected to the 110 kV network in the Lübeck district,
which is inadequately dimensioned in terms of necessary
system impedance.
Due to this and based on detailed network studies, E.ON
decided to carry out several extensions in the northern
German power network between 2003 and 2004. In conjunction with these extensions and considering the highly
dynamic behaviour of the Herrenwyk HVDC converter
station, E.ON Netz GmbH awarded a turnkey contract
to Siemens to build a new SVC on the former site of the
Lübeck-Siems power plant in November 2003, in order
to ensure voltage quality in its northern 380 kV grid.
The Thyristor Controlled Reactors had to be built indoors
to fulfill very stringent requirements regarding noise
emissions, using special noise damping materials and
Customer
E.ON Netz GmbH, Germany
System voltage
380 kV/50 Hz
Transformer
200 MVA
Operating range
+ 200 MVAr (capacitive) to
– 100 MVAr (inductive)
Definition of SVC
branch circuits
1 x TCR
1 x TSC
2 x Filters
380 kV, 50 Hz
CTSC 1
L TCR 1
2
L TSC 1
L1DTF
L2DTF
C2DTF
LF1
L TCR 1
2
TCR 1
CF1
TSC 1
Filter 1
C1DTF
Filter 2
methods. The project also included the first-ever implementation (in an SVC) of the high-reliable control system
based on SIMATIC TDC®, a proven industrial hardware
design from Siemens. The SVC was successfully put into
commercial operation only 12 months after the contract
had been signed.
Lübeck
Poland
Berlin
Netherlands
Germany
Belgium
Czech Rep.
Luxembourg
17
Bom Jesus da Lapa
The largest SVC in South America built in record construction time
This Static Var Compensator, located at the 500 kV
Bom Jesus da Lapa II substation, maintains voltage
stability over the 1100 km long 500 kV overhead
transmission line between the Serra da Mesa substation and the Sapeaçu substation near Salvador
in the northeast of the country.
This large Siemens SVC with a control rating of 500 MVAr
was built in the record time of only 12 months for the
Italian Enelpower utility company to strengthen the eastwest grid interconnection in Brazil‘s northeast under the
project name “Interligação Sudeste–Nordeste“. Similar
to the solution for the Funil SVC, all electronic power components needed for compensation were installed in steel
containers.
Technical Data
Customer
Enelpower, Brazil
System voltage
500 kV/60 Hz
Transformer
4 x 83.3 MVA
Operating range
+ 250 MVAr (capacitive) to
– 250 MVAr (inductive)
Definition of SVC
branch circuits
2 x TCR
1 x TSC
2 x Filters
500 kV, 60 Hz
Since its commissioning in December 2002, the SVC
at Bom Jesus da Lapa II substation has been stabilizing
voltage and frequency across the grid, minimizing losses
and responding swiftly and reliably to load changes.
L TSC 1
CTSC 1
TSC 1
18
LF1
LF2
CF1
CF2
Filter 1
Filter 2
L TCR 1
2
L TCR 2
2
L TCR 1
2
L TCR 2
2
TCR 1
TCR 2
Impala, Illovo & Athene
Voltage stability to ensure security of power supply
Richards Bay is a major industrial centre of the Republic
of South Africa with aluminium smelter plants, paper mills
and open-cast Mining, among others located in the region.
With the main generation centres of the Transvaal over
200 km away, maintaining a stable and secure supply to
this region is critical. In 1994 and 1995 Siemens successfully installed three Static Var Compensators for the South
African Utility ESKOM (Electricity Supply Commission) at
their 275 kV substations (Impala and Illovo) and at their
newly built 400 kV substation Athene.
The NATAL Static Var Compensators are designed for:
■ Fast dynamic network stabilization
(voltage stabilisation)
■ Reduction of voltage unbalance
■ Reduction of network disturbances
■ Increasing of transmission capability
■ Control of external reactive-power devices
Technical Data
Customer
ESKOM, South Africa
System voltage
275 kV/50 Hz; 400 kV/50 Hz
Transformer
4 x 66.7 MVA
Operating range
+ 100 MVAr (capacitive) to
– 300 MVAr (inductive)
Definition of SVC
branch circuits
2 x TCR
3 x Filters
275 kV/400 kV, 50 Hz
L TCR 1
2
L TCR 2
2
L TCR 1
2
L TCR 2
2
LF1
LF2
LF3
CF1
CF2
CF3
Filter 1 Filter 2 Filter 3
TCR 1
TCR 2
Harare
Zimbabwe
Namibia
Mozambique
Botswana
Swaziland
Johannesburg
Oran
ge
Transvaal
Generation
South Africa
Illovo
Athene
Impala
Durban
Cape Town
19
Published by and copyright © 2011:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 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.
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Power Transmission Division
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Dispo 30003 | c4bs No. 7803 |
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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.