A Novel Technique for Optimal Capacitor Placement and Sizing in Distribution Systems with Non-Linear Loads Based on Harmonic Source Identification

With increasing nonlinear loads, harmonic currents are injected into networks which distort all ofthe voltages and currents. this is an issue which must be considered when making a decision regarding capacitor placement so that resonance will not occur, and therefore losses and severe stress on the network equipment is prevented. in this paper, a new method is proposed based on the harmonic source identification and current separation to cope with nonlinear loads in the capacitor placement problem. intrinsic difference between linear and nonlinear loads in their v-i characteristics can be used to model harmonic sources. also, genetic algorithm (ga) is used to solve the related optimization problem. to validate the proposed method, an ieee 33-bus test system is simulated. based on the simulation results, by using the proposed method, the infl uence ofharmonics is considered properly. consequently, corresponding savings is increased and also the solution will not cause any resonance.