EMBEDDED CONTROLLED MULTI LEVEL VOLTAGE SOURCE INVERTER BASED DISTRIBUTION STATICS SYNCHRONOUS COMPENSATOR

Kishore Kishore

doi:10.3844/ajassp.2014.1201.1211

Abstract

This study deals with the D-STATCOM used as a shunt connected compensator for the voltage support. The D-STATCOM has a faster response as compared with the conventional compensators such as the synchronous condenser and the SVC. The D-STATCOM can provide voltage support and improve power quality. The D-STATCOM supplies reactive power to the load to improve the voltage stability of the load busses. In this study two control strategies are performed using VSI fed STATCOM for reactive power compensation and power system bus voltage regulation. The fourteen bus system with and without D-STATCOM are modeled and simulated. VSI fed STATCOM is modeled and simulated. The compensators are tested with different loads. The above facts have been verified by using simulation in MATLAB/SIMULINK environment on a five level VSI fed STATCOM under variations of load. The simulated results have been validated through experimental results on a five level VSI fed STATCOM and the experimental results are compared with the simulated results.

Highlights

Distribution system there is radial distribution in which loads are connected in different lengths short
The above facts have been verified by using simulation in MATLAB/SIMULINK environment on a five level Voltage Source Inverter (VSI) fed STATCOM under variations of load
The simulated results have been validated through experimental results on a five level VSI fed STATCOM and the experimental results are compared with the simulated results

Summary

INTRODUCTION

Distribution system there is radial distribution in which loads are connected in different lengths short. The commercial availability of power faulty wiring, short circuits in the system and, starting of induction motors, this will lead to increase in both production and financial loss for industries and electronics based switches with high power management capacity such as GTO thyristors, IGBTs. A second generation FACTS device, using key component as it is necessary to mitigate the voltage sag. The ac voltage difference across the coupling reactor produces reactive power exchange between the STATCOM and the power systems at the Point of Common Coupling (PCC). The different multilevel inverter topologies have their own merits and demerits depending on the number of components requirement, applications, configuration, modularity cost, space requirement. Cascade Multilevel Inverter (CMLI) is considered most suitable topology for STATCOM for power systems voltage regulation applications (Chen et al, 1997; Yao and Xiao, 2013)

CASCADE MULTILEVEL INVERTER

SELECTION OF SWITCHING ANGLE

SIMULATION RESULTS

EXPERIMENTAL RESULTS

CONCLUSION