Implementation of Adaptive Step-Size Algorithm in Distribution Network for Optimal Location and Sizing of SAPFs

The traditional harmonic suppression strategies of SAPFs focus on compensating harmonic current of local nonlinear loads, which is inapplicable for the distribution network with plenty of distributed nonlinear loads. In this paper, an improved method based on adaptive step of comprehensive network harmonic suppression for determining optimal location and size of SAPFs is proposed. Foremost, the objective function is analyzed from a mathematical view and the complete procedure is established in detail. Then, an IEEE 18-bus test system is employed in the simulation to evaluate the feasibility of the proposed method. Simulation results verify that this method is efficient and economical in both situations when centralized or distributed nonlinear loads are connected in distribution network.