01-11-2014, 03:11 PM
Abstracts: A power quality is an occurrence manifested as a non-standard voltage, current or frequency that results in a failure or disoperation 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 restricting of power system 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 determinates of power quality are themselves a serious question, it is very vital to take positive steps in this direction. The present work is to identify the prominent concerns in this area and hence the measures that can enhance the quality of power are recommended. This research describes the technique to compensate the reactive power and improve the power quality. This study will discuss and demonstrate how Static VAR Compensator (SVC) has successfully been applied to control transmission systems dynamic performance for system disturbance and effectively regulate system voltage. SVC is basically a shunt connected static VAR generator whose output is adjusted to exchange capacitive or inductive current so as to maintain or control specific power variable. In this study, simple circuit model of Thyristor Controlled Reactor is modelled and simulated using MATLAB. The simulation results will be presented. The current drawn by the TCR varies with the variation in the firing angle. The simulation results are compared with the theoretical results.