An Optimization Technique for Voltage Regulation in Electrical Power Systems

Abstract

In this work, a Particle Swarm Optimization (PSO) technique is proposed to determine the optimal firing angles of the Thyristor-Controlled Reactor (TCR) to regulate the voltage of the electrical power system. A 500 km-length electrical power system is considered. The transmission line is modeled by three pi-section networks each represents a distance of 500/3 km. The mathematical model of the electrical power system is derived and used by the PSO algorithm to find the required TCR firing angles for voltage regulation. Different test cases have been conducted to assess and validate the proposed PSO technique capabilities. The results have revealed the ability of the proposed PSO technique to regulate the load voltage efficiently to average load voltage change equals 0.271%.