Research On Optimal And Dispatch Of Distribution Network With Distributed Generation

In recent years,people's demand for energy is increasing.The extensive use of fossil fuels,not only caused the decline of traditional energy,but also caused serious environmental pollution.Distributed power,especially renewable,brings hope to the increasingly serious energy crisis in today's society.With the large scale small,clean,energy saving and environmental protection of the distributed power supply into the distribution network,renewable energy in the distribution network in the popularization and application rate will continue to improve.As a result,the intermittent and random nature of renewable energy generation brings new challenges to the optimal scheduling of distribution networks.In view of the current distribution network scheduling method and relative lack of inconvenience situation of practical application,this paper in order to improve the controllability of the DG for the purpose of research,enhancement of distribution network with distributed energy scheduling capabilities,enhance the research scope of power dispatching of distribution network.In order to improve the controllability of distributed power supply,this paper develops the method of photovoltaic array reconfiguration.In addition,this paper will implement the power dispatching model in distribution network,in order to get close to the actual,priority allocation of distributed power and energy storage system,analyzed and the IEEE34 node test feeder system.In this paper,the optimization of power dispatching "containing DG distribution network as the research object.Firstly,this paper introduced the main components of the system containing DG in the distribution network model,including the model of PV system,energy storage system model,inverter model and load model.The above model is simulated and analyzed.Secondly,in order to be closer to the reality,the DG and the energy storage system should be configured reasonably before the scheduling in the DG distribution network.The rational allocation of energy storage device in the distribution network with DG,the distribution network with DG and DG storage system planning based on multi-objective particle swarm optimization algorithm,so as to enhance the performance of distribution network at the same time,reduce the difficulty scheduling techniques and methods.Then,based on the idea of reconstruction,the output power of photovoltaic array can be improved under the condition of non-uniform illumination,and the controllability of renewable energy can be improved.Finally,this paper use PSDCAD/EMTDC in IEEE34 bus test feeder system of PV array reconstruction was verified as well as can optimize the application of photovoltaic array configuration of distribution network reconfiguration in the reservoir,the simulation results verify the correctness and validity of the proposed theory.