VOLTAGE SAG AND SWELL MITIGATION USING MULTI-LEVEL INVERTER-BASED CUSTOM POWER CONDITIONERS

C. Sharmeela∗ and M.R. Mohan∗∗

Keywords

Custom power, DSTATCOM, SSC, multilevel inverter, SPWM, PSCAD/EMTDC

Abstract

The main purpose of the Distribution STATic COMpensator (DSTATCOM) and Static Series Compensator (SSC) commercially called as Dynamic Voltage Restorer (DVR) is that it injects reactive power in shunt and series, respectively, with a distribution feeder to reduce the effect of short-term voltage sags, swells and momentary interruptions in the distribution system. This paper presents a Voltage Source Converter (VSC) based multi-level D-STATCOM and DVR controlled by sinusoidal PWM for the mitigation of voltage sag/swell and voltage sag respectively. The modelling and transient simulation have been carried out by PSCAD/EMTDC. The effectiveness of multi-level D-STATCOM for the mitigation of voltage sag/swell and DVR for the mitigation of voltage sag has been demonstrated by case studies.

Important Links:



Go Back