Design and Investigation of Single-Tuned Passive Filter in Distribution Networks Based on Pareto Optimal Fronts

Since the utilization of nonlinear loads such as power electronic converters have been increased and also because of the wide range of their usage and the creation of harmful harmonics, active and passive filters must be used to eliminate the effect of harmonics. In this paper, passive filters have been utilized because of fewer cost in terms of installation, maintenance and repair compared with active filters. The purpose of the current study is to find the optimal location of single-tuned passive filter and detect the size of its elements in distribution networks by a multi-objective approach. The objective functions include the reduction of network losses, initial investment cost and the improvement of the frequency response on critical buses. In this problem limitations such as buses voltage profile and harmonic distortion of the network are considered. To assess the proposed procedure, 33-bus IEEE test distribution network is used. As results the amount of network losses, buses profile voltage, and the network harmonic distortion are evaluated before and after the filtering and the accuracy of the method is evaluated too.