Optimal sizing and placement of capacitor on radial distribution system using genetic algorithm

Abstract

In this paper an acute investigation of the capacitor placement issues in IEEE-14, 30, 33 bus systems are presented. In distribution system the problem of power loss and voltage deviation is increasing day by day due to exponentially increasing loads of domestic and commercial applications. These problems can overcome by optimal placement of capacitor in distribution networks. In this paper the combination of two optimization problems is presented to determine the optimal sizing and location of capacitor in the distribution network so that power losses can be minimized. A heuristic algorithm i.e. the genetic algorithm which is used to solve the optimization problem. The problem of optimal sizing and placement of capacitors increased the complexity in optimization problem due to multiple constraints. Hence an efficient approach is required to solve this combinational problem. Solution of this problem is provided with the help of two approaches. First method is used for optimum location and sizing of the capacitor and second approach is used for the sizing of the capacitors. To present a consequential analysis, the losses are calculated at stressed conditions and it is also observed that how the system losses affected by placing different number of capacitors under various loading conditions. In this paper effectiveness of both approaches are compared by performing the simulation in MATLAB/Simulink and calculate the system losses, time elapsed and convergence of the algorithm.