OPTIMAL LOCATION OF SVC FOR REAL POWER LOSS MINIMIZATION AND VOLTAGE STABILITY ENHANCEMENT USING HARMONY SEARCH ALGORITHM

ABSTRACT Everyday increasing in demand in the electric power system network has been caused the system to be overloaded and leading to voltage instability. It is one of the major phenomena which has resulted a major obstruct to power system network. It is possible that voltage stability status in a stressed Power system could be improved with effective reactive power compensation and it can be achieved by significant use of FACTS controllers. This paper aimed at multi-objective optimization problem such as minimization of real power losses, load voltage deviation and L-index. Here Lindex is used to find the critical buses in the system for optimal location of shunt connected FACTS controller known as Static Var Compensator (SVC).A Meta-Heuristic Algorithm Known as Harmony Search Algorithm (HSA) is applied to find the optimal sizes of SVC for solving Multiobjective optimization problem. Simulations are performed on IEEE 14-bus test system. The results are shown that optimal location and sizing of SVC minimizes real power losses, load voltage deviation, L-index and also Voltage profiles are improved at different loading conditions. In this present paper 125%, 150%, 175% and 200% overloading cases are considered