Locating and Sizing of Distributed Generation Based on Interior Point Method

Distributed generation( DG) can improve the power flow distribution,network loss and quality of the system,and its effect is closely related to the location and size of the distributed generation. Interior point method( IPM),characterized by fast convergence and high accuracy,is feasible and effective in solving power system optimization problem. Thus,the traditional locating and sizing model is divided into discrete one and continuous one,and continuous solution is conducted in the interior point method. Furthermore, coordination parameter W,based on the Pareto optimization theory,is introduced to optimize two sub-functions in the process of locating and sizing. A multi-objective function of active loss and voltage level is formed. The result indicates that the interior point method based on multi-objective coordination is feasible and effective,for it can coordinate the optimization of the multi-objective function and shorten computation time and quicken convergence.