Research On Optimal Configuration Of Distributed Power Supply Distribution Network Of Heze Area

As the penetration rate of distributed power sources in power distribution systems continues to increase,improper site selection,improper capacity,and unreasonable operations will have a major adverse impact on distribution networks.Therefore,optimization studies on the location and capacity of distributed power supplies have been reflected.Heze Power Grid’s grid-connected distributed equipment capacity has increased by spurt in 2017.In the future,Heze Power Grid will access more and more distributed power sources to meet local grid load growth requirements,reduce environmental pollution caused by the burning of fossil fuels,increase energy utilization efficiency,and improve power supply reliability.It is urgent to select distributed power sources.Research on the problem of site fixed volume.This paper uses OpenDSS to simulate the influence of node voltage and line network loss,and mainly expounds the influence of distributed power grid-connected on distribution network voltage and network loss.In order to improve the shortcomings of OpenDSS interaction loop,a hybrid optimization simulation system combining VBA and OpenDSS is built.The VBA program is compiled and embedded in OpenDSS for simulation calculation.The IEEE standard 123 node example is used to simulate the operation of distributed devices.It proves that the hybrid optimization simulation system is feasible in practice.In addition,the optimal configuration of the distributed device access distribution system is explored,and the multi-objective function model of the location and capacity of the distributed generation equipment is built by fully considering the goals of voltage,network loss and investment.For the optimization problem of multi-objective function,the method of genetic algorithm is used,and the method is improved for the optimization of grid-connected capacity and access location of distributed power.Aiming at the typical distributed equipment grid-connected example in Heze area,the multi-objective function solution with the lowest investment cost,minimum network loss and optimal voltage quality of distributed equipment in Heze area was completed.Reasonably select the optimal grid-connected location and equipment capacity of distributed generation equipment,and compare the voltage and network loss before and after optimization to verify the practicability of the optimization method and scheme.The research results can be applied to the feasibility study of the distributed power grid-connected projects in Heze area,and the selection of grid-connected locations and the determination of grid-connected capacity can be instructed.It is significant for reducing project investment costs,reducing grid losses,improving voltage quality and economic benefits.