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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)

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  REFERENCE:

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