An Effective HSA Approach for Optimal Placement Of SVC.

Abstract

Voltage stability problems have been one of the major concerns for electric utilities as a result of which systems are subjected to heavy loading. Because of this heavy loading, power systems are closer to their stability margins and voltage collapse. Voltage instability is a major problem that usually occurs in the heavy loading electric power systems and causes voltages to decline. Voltage collapse may lead to the blackout if suitable monitoring is not done and appropriate preventive control methods are not used. In this project a new method of optimal placement of Static Var Compensator (SVC) based on Harmony Search algorithm (HAS) is presented and effectively implemented. A comparison has been made for the Fast Voltage Stability Index (FVSI) with and without placing SVC. The MATLAB simulations are performed on IEEE 30 bus test system. It was found that, the efficiency of FVSI has been considerably increased. The simulations results show that there is reduction in the total SVC cost, and also there is reduction in total power loss. With increase in the fitness value function there is improvement in the power system voltage stability