Optimal Allocation Of Filters In Distribution Network Based On Dynamic Running Of Multiple Harmonic Source Loads

Power electronics device plays a main role in the harmonic sources and harmonic distortion has experienced a continuous increase in distribution systems owing to the growing use of it. Hence, how to restrain harmonic distortion has been the one of the most important subjects in the power system and power electronics fields.The characteristic that multiple harmonic source loads lie in distribution network is more and more prominent. Considering the uncertain working hours of multiple harmonic source loads, the concept of dynamic running is presented in this paper. Adaptive genetic algorithm for the unified hierarchical optimal allocation of passive and active harmonic filters is adopted in distribution network. Under dynamic running of multiple harmonic source loads, the algorithm is to minimize the initial total cost of filters and to restrain harmonics effectively by optimally determining their locations, types and related parameters on the whole distribution network, while the harmonic voltages are restricted to their limitations. Test results on an 18-node distribution network demonstrate the effectiveness of the algorithm.Based on the model, the computation program is developed. The results on a sample distribution system are given, which proved the correctness and effectiveness of hierarchical optimization. The optimum result of dynamic running is more economy than that of static running, which demonstrated the correctness and feasibility of dynamic running.