VAR Compensation on Load Side using Thyristor Switched Capacitor and Thyristor Controlled Reactor

  • Bibek Bimali Department of Electrical Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
  • Sushil Uprety Department of Electrical Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
  • Ram Prasad Pandey Department of Electrical Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
Keywords: Static VAR Compensator (SVC), Thyristor Switched Capacitor (TSC), Thyristor Controlled Reactor (TCR), Firing Angle

Abstract

Generally, AC loads are the inductive loads which are reactive in nature. These loads, thus, demand and draw reactive power from the supply source. If these loads draw large lagging current from the source, this will cause excessive voltage drop in the line, which can even cause the voltage collapsing in the line itself if the drop in the line is excessively high. VAR compensation means efficient management of reactive power locally to improve the performance of AC power systems. In this paper, Static VAR Compensator, using TSC (Thyristor Switched Capacitor) and TCR (Thyristor Controlled Reactor), is designed and simulated in MATLAB to maintain the power factor of power system nearly to unity at all times. TSC and TCR are basically shunt connected capacitors and inductor respectively whose switching (of capacitors) and firing angle control (of inductor) operations are carried out using thyristors. The purpose of capacitors is to supply lagging VAR as per the demand by the connected loads and the overcompensation due to excess VAR generated by the discrete set of turned on capacitors are absorbed by the adjustable inductive reactance of the inductor in TCR branch through firing angle control mechanism.

Downloads

Download data is not yet available.
Abstract
53
pdf
91
Published
2021-04-12
How to Cite
Bimali, B., Uprety, S., & Pandey, R. (2021). VAR Compensation on Load Side using Thyristor Switched Capacitor and Thyristor Controlled Reactor. Journal of the Institute of Engineering, 16(1), 111-119. https://doi.org/10.3126/jie.v16i1.36568
Section
Articles