Optimal Allocation Method of SAPFs for Harmonic Loss Reduction in Distribution Networks Based on Multi-objective Particle Swarm Optimization

As nonlinear loads are distributed and dispersed in the distribution network, the traditional point-to-point allocation method of SAPFs requires multiple SAPFs with large total capacity, which brings huge installation and maintenance costs. Therefore, the SAPFs allocation method for comprehensive harmonic mitigation has emerged. With the reduction of network harmonic power loss and mitigation of bus harmonic distortions as the optimization objects, this paper proposes an algorithm based on multi-objective particle swarm optimization to optimize the location and capacity of SAPFs. Firstly, the comprehensive harmonic mitigation model is built, in which the optimization of harmonic loss, harmonic distortion, SAPFs capacity and SAPFs number is considered. Then, the MOPSO algorithm is modified and implemented to solve the proposed model. Finally, the IEEE 18-bus system with eight nonlinear loads is designed in simulation. The results verify the effectiveness and feasibility of the proposed algorithm in harmonic loss reduction with few SAPFs.