Digital simulation of an interline dynamic voltage restorer for voltage compensation

Abstract EN

The Dynamic Voltage Restorer (DVR) provides an advanced solution for voltage sag/swell problems.

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 sag/swell caused in a feeder.

The IDVR consists of several DVRs connected to different distribution feeders in the power system sharing common energy storage, where 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 modelling and simulation of single phase IDVR system using Sinusoidal Pulse Width Modulation (SPWM) technique for voltage sag and swell conditions and three phase IDVR using Space Vector Pulse width modulation (SVPWM) technique for voltage sag condition are presented.

Closed loop control for voltage sag and swell for a simple IDVR systems are modeled and simulated using MATLAB software.

The sim-ulation results are presented to demonstrate the effectiveness of the proposed IDVR system.