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Research Journal of Engineering and Technology
ISSN: 2321-581X(Online), 0976-2973(Print)
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Voltage Sag and Swell Mitigation Using Interline Dynamic Voltage Restorer
S. Deepa1* Dr. S. Rajapandian2
1Research Scholar, Sathyabama University, Chennai, India.
2Professor, Panimalar Engineering College, Chennai, India.
The dynamic voltage restorer (DVR), a custom power device, has been proposed to mitigate voltage sags, thereby protecting sensitive loads. The voltage-restoration process involves real-power injection into the distribution system. The Interline DVR (IDVR) proposed in this paper provides a way to compensate the voltage deviation caused in a feeder. The IDVR consists of several DVRs connected to different distribution feeders in the power system sharing common energy storage. Here, one DVR in the IDVR system works in voltage-sag/swell compensation mode while the other DVR in the IDVR system operate in power-flow control mode. The single phase model of the IDVR system is illustrated which is operated by Multiple Pulse Width Modulation (PWM). Close loop control for sag/swell for a simple system is modeled and simulated using MATLAB software. The simulation results are presented to demonstrate the effectiveness of the proposed IDVR system.
Interline Power Flow Controller (IPFC), power flow control mode, series compensation, Total Harmonic Distortion (THD).
S. Deepa, S. Rajapandian. Voltage Sag and Swell Mitigation Using Interline Dynamic Voltage Restorer. Research J. Engineering and Tech. 3(3): July-Sept. 2012 page 202-206.
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