static var compensator (svc)

advertisement
STATCOM up to 415 V
STATCOM
STATIC VAR COMPENSATOR (SVC)
STATCOM is used for reactive power compensation in
a system having non-linear loads like drives, electric
arc furnace, welding loads etc.
SALIENT FEATURES
?
Indoor, 415 V, 3 Phase, 50 Hz System
?
Reactive Power Compensation from 100
kVAr to 500 kVAr
?
Step less system
?
Fast response; < 6 ms
?
Eliminates 100% harmonic distortion
?
IEEE 519 compliant
?
RS 232 & RS 485 communication
?
System Resonance mitigation
BACKGROUND
?
OV & OC protection
?
Modular augmentation capability
STATCOM is used for centralized reactive power
compensation & harmonic suppression in a power
system.
STATCOM is an IGBT based Power Electronics
device. It uses IGBT and inverter technology.
It actively eliminates 100% harmonic distortion &
reacts instantly to varying loads. This is done by
injecting additional currents as required in order to
cancel the harmonic components of the non-linear
loads.
Every 415 V consumer of Electricity Board using large
number of non- linear loads & aiming at to have 'UNITY
POWER FACTOR' or to have 'A Desired Power Factor'
should possess a STATCOM.
?
Harmonic Spectrum 2nd to 19th
DESIGN
A STATCOM is installed in parallel to the harmonic
generating loads. A CT first measures the current being
drawn momentarily by the load. Then filter control unit
analyses this current for amplitude & harmonic order.
Then it feeds a compensation current into system
whose amplitude and individual harmonic order is
exactly equal to the current drawn by the load but which
is 180° out of phase with it. So the harmonic currents
cancel each other and the supply network only has to
supply the fundamental frequency and is not
contaminated with harmonics at the point of
connection.
Page 1
STATCOM up to 415 V
STATCOM
?
Functional accuracy
Operating Modes:
?
Overvoltage and over-current protection
?
Reactive Power Compensation (RPC)
?
No signal
?
Active Harmonic Filter (AHF)
?
Physical intactness
?
Active Static VAR Compensation (RPC +AHF)
TESTING
Following tests are conducted as per the demands of
application:
?
Circuit continuity
Crompton Greaves Ltd.
Vacuum Interrupters and Instrument Transfomers Division : Power Systems
D2 MIDC, Waluj, Aurangabad 431 136, Maharashtra, India
Ph. :
+ 91-240-2558000, 2558031, Fax :+ 91-240-2554697
E-mail :
Divisional Marketing
North Region (India)
East Region (India)
West Region (India)
South Region (India)
International
:
:
:
:
:
:
manoj.naphade@cgglobal.com
anil.kamra@cgglobal.com, gautam.tewari@cgglobal.com
dipankar.dassarma@cgglobal.com
ajay.kotak@cgglobal.com
murali.dn@cgglobal.com
govindaraj.s@cgglobal.com
Registered Office
CG House, 6th Floor, Dr.Annie Besant Road ,Worli , Mumbai 400 030 (India).
Web : www.cgglobal.com
mgn-001/Jan 2010/
Pratik & Dushyant
The data given in this catalogue is subject to change without notice
Page 4
Download