Static Compensators for Mitigation of Power Quality Issues (STATCOM)

Brief Description

STATCOMs are inverter based solutions used for compensation of reactive power, harmonic currents, unbalance currents and neutral currents caused by reactive and non-linear loads. STATCOMs are realized with current controlled PWM voltage source inverters connected to grid through interconnecting impedance. Inverters are constructed with advanced switching devices like IGBTs. When compared to conventional power quality solutions like switched capacitors and tuned filters, STATCOMs feature excellent dynamic performance under fluctuating load conditions, increased life, better efficiency, insensitiveness to grid frequency etc. .

 

 

 

 

 

 

Main uses and domain

  • Reactive power compensation to maintain grid side PF unity

  • Harmonic current compensation as per IEEE 519-1992 standard within the current rating of the STATCOM

  • Unbalance current compensation

  • Neutral current compensation

  • Domain: Power quality mitigation

Features and Technical Specifications

Specifications
Single Phase STATCOM Rating (typical) : 5A @ 230V, 50 Hz AC input Configuration : Single Phase, full bridge IPM/IGBT PWM controlled inverter Switching frequency : 10 kHz Control : DSP based digital control Cooling : Forced air cooling 3 Phase 3- wire STATCOM Rating (typical) : 500 kVA, 415V 3 Phase, 3 Wire Configuration : 3 Phase, full bridge IGBT PWM controlled inverter Switching frequency : 10 kHz Control : Using DSP/FPGA based digital controller Cooling : Forced air cooling Panel fabrication : Suitable for indoor deployment User interface : Graphic LCD and Keypad Protections : Over current, short circuit, over voltage (AC/DC), over temp. 3 Phase 4 -wire STATCOM Rating (typical) : 500 kVA, 415V 3 Phase, 4 Wire Configuration : 3 Phase, 4 leg IGBT PWM controlled inverter Switching frequency : 10 kHz Control : Using DSP/FPGA based digital controller Cooling : cooling Panel fabrication : Suitable for indoor deployment User interface : Graphic LCD and Keypad Protections : Over current, short circuit, over voltage (AC/DC), over temp.

Features

  • Maintains programmed power factor during highly fluctuating load conditions

  • Keeps harmonic currents within the limits(as per IEEE 519-1992) during fluctuating load conditions

  • No switching transients as in switched AC capacitor solutions

  • Insensitive to grid frequency fluctuations

  • Digitally controlled system providing more flexibility

  • Fast protections and indicators for faults

  • 4 wire STATCOM is a composite solution for load dependent power quality issues

Platform required(if any)

NA

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Contact Details for Techno Commercial Information

Technology Transfer Centre (TTC),

Power Electronics Group

C-DAC, Thiruvananthapuram

Tel: +91-471-2723333, 2723226 Fax: +91-471-2722230, 2723456
email:
peg@cdac.in Website: www.nampet.in