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Visvesvaraya Technological University, Belgaum
A Synopsis Report on
TOPIC
STATIC SYNCHRONOUS COMPENSATOR AND ITS APPLICATION
(STATCOM)
Under the Guidance Of
VIJI U (ASSISTANT PROFESSOR)
(EEE DEPT)
Presented By,
ANNURAG DAS
USN: 1MJ08EE006
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGG
M.V.J COLLEGE OF ENGINEERING
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STATIC SYNCHRONOUS COMPENSATOR AND ITS APPLICATION
STATCOM
INTRODUCTION:
A Static Synchronous Compensator (STATCOM), also known as a "static synchronous
condenser" ("STATCON"), is a regulating device used on alternating current electricity
transmission networks. It is based on a power electronics voltage-source converter and can
act as either a source or sink of reactive AC power to an electricity network. If connected to a
source of power it can also provide active AC power. It is a member of the FACTS family of
devices.
PRINCIPLE OF STATCOM :
The STATCOM can provide instantaneous and continuously variable reactive power in
response to grid voltage transients, enhancing the grid voltage stability. The STATCOM
operates according to voltage source principles, which together with unique PWM (Pulsed
Width Modulation) switching of IGBTs (Insulated Gate Bipolar Transistors) gives it
unequalled performance in terms of effective rating and response speed. This performance
can be dedicated to active harmonic filtering and voltage flicker mitigation, but it also allows
for a STATCOM to be comparatively downsized, its footprint can be extremely small.
FEATURES:
• Power factor correction.
• Voltage control.
• Active harmonics cancellation.• Flicker mitigation.
• Unsymmetrical load balancing.
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ABSTRACT:
Fast acting static synchronous compensator (STATCOM), a representative of
FACTS family, is a promising technology being extensively used as the state-
of-the-art dynamic shunt compensator for reactive power control in
transmission and distribution system. Over the last couple of decades,
researchers and engineers have made path-breaking research on this technology
and by virtue of which, many STATCOM controllers based on the self-
commutating solid-state voltage-source converter (VSC) have been developed
and commercially put in operation to control system dynamics under stressedconditions. Because of its many attributes, STATCOM has emerged as a
qualitatively superior controller relative to the line commutating static VAR
compensator (SVC). This controller is called with different terminologies as
STATic COMpensator advanced static VAR compensator, advanced static
VAR generator or static VAR generator, STATic CONdenser, synchronous
solid-state VAR compensator, VSC-based SVC or self-commutated SVC or
static synchronous compensator (SSC or S2C). The development of STATCOM
controller employing various solid-state converter topologies, magneticsconfigurations, control algorithms, switching techniques and so on, has been
well reported in literature with its versatile applications in power system. A
review on the state-of-the-art STATCOM technology and further research
potential are presented classifying more than 300 research publications.
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ADVANTAGES:
Quick response time. This helps with compensation of negative phase
current and with the reduction of voltage flicker .
Active power control is possible with a STATCOM (with optionalenergystorage on dc circuit). This could further help with systemstability control.
No potential for creating a resonance point. This is because nocapacitor banka or reactors are required to generate the reactive power for a STATCOM.
The STATCOM has a smaller installation space due to no capacitorsor reactors to generator Mvar, minimal or no filtering, and theavailability of high capacity power semiconductor devices.
A modular design of the STATCOM allows for high availability.
APPLICATIONS:
Unbalanced loads. Arc furnaces. Utilities with weak grid knots or fluctuating reactive loads. Wind farms. Wood chippers. Welding operation. Industrial mills.
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CIRCUIT DIAGRAM:
PLANNING SCHEDULE:Month: February 2012
Week 1(8th feb) Week 2(15th feb) Week 3(22nd feb) Week 4(29th feb)
Selection of topic
for the seminar
Time taken:(4 hrs)
Literature survey,
brief idea and study
on the topic chosen.
Time taken:(10 hrs)
Detailed study of
various technical
papers on the topic,
preparation of
presentation and
paper..
Time taken:(18 hrs)
Seminar
presentation
Time taken (3 hrs)