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Distribution network reactive power compensation optimal allocation plays an important role in the planning and design of the power system to improve the voltage level at the same time , the system can reduce network losses , reduce energy costs , optimize the allocation of research with reactive power compensation problem has important practical significance . Distributed generation is a renewable energy power generation , clean and pollution , the environmental impact is one of the main direction of development in the electricity . This paper briefly describes the distributed power , distributed power input distribution network reactive power compensation optimal allocation . 10kV distribution network with distributed power reactive power compensation mathematical model of optimal allocation . The model of distributed power processing into the PQ node , grid annual electricity cost for equivalent to the annual value of the investment costs of the reactive power compensation equipment and a minimum of the objective function , power balance , voltage qualification and other constraints , can guarantee the system 's power quality , but also its economy to achieve the best . Due to system load is changing from time to time , the model also considering the maximum and minimum of three load operation mode , while the distributed power supply , respectively for the three types of output , so that calculations are more accurate , simple , to avoid considering only a single load operation the one-sidedness of the way , more in line with the actual situation . 10kV distribution network may generate reactive send down the problem, the system capacity and equipment investment costs of new reactive power compensation point to consider only the minimum load operating mode . Solving method , particle swarm optimization, particle swarm good convergence characteristics, improve the speed of reactive power compensation optimization configuration problem solving . 12 nodes and 28 nodes distributed power Two Reactive Power Optimization verification example , show that the proposed algorithm can effectively solve the distribution network with distributed power reactive power compensation optimization configuration issues , compensation effect obviously, this method has good feasibility , practicality and economy .
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