Design, Modeling & Simulation of DSTATCOM for Distribution Lines for Power Quality Improvement

Abstract

A Power quality problem is an occurrence
manifested as a nonstandard voltage, current or frequency
that results in a failure or a mis-operation of end user
equipments. Utility distribution networks, sensitive
industrial loads and critical commercial operations suffer
from various types of outages and service interruptions
which can cost significant financial losses. With the
restructuring of power systems and with shifting trend
towards distributed and dispersed generation, the issue of
power quality is going to take newer dimensions. In
developing countries like India, where the variation of
power frequency and many such other determinants of
power quality are themselves a serious question, it is very
vital to take positive steps in this direction .This paper
presents a study on the modeling of a STATCOM (Static
Synchronous Compensator) used for reactive power
compensation on a distribution network. This paper deals
with the simulation of distribution static synchronous
compensator (DSTATCOM) for improving power quality of
a distribution system feeding linear as well as non-linear
loads. Nowadays, there are an increasing number of nonlinear
loads which inject harmonics into the system. A
three-phase insulated gate bipolar transistor- (IGBT-)
based current controlled voltage source inverter with a DC
bus capacitor known as a DSTATCOM is used for power
factor correction, harmonic compensation and for providing
required reactive power to the load. A mo