Abstract

Optimal reactive power dispatch in power system is referred to minimizing the power loss in transmission lines and voltage deviations at the load bus by control of reactive power. This paper presents the comparison between particle swarm optimization (PSO) and an improved evolutionary krill herd algorithm (KHA) for computing optimal steady-state performance of power system by finding the optimal position for placement of flexible AC transmission system (FACTS). For this purpose thyristor controlled series compensator (TCSC), static VAR compensator (SVC). A comparative analysis between the two optimization techniques is done and KHA is found to give better results as compared to PSO. IEEE 30- bus system is considered for the optimal placement of FACTS controllers.

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