Research On Fault Location Of Distribution Network With DG Based On Petri Net

In recent years,with the continuous development of the society,the demand for electricity from all walks of life increases,and the demand for power quality and power supply reliability is getting higher and higher.The scale of the power network is also increasing,and the distribution network system is constantly updated,so the network topology of the distribution network becomes more complex.Access to large-scale distributed power has many unpredictable effects on the distribution network,which greatly increases the possibility of distribution network failure,and further increases the probability of distribution network failure.Thus,it increases the difficulty of fast and accurate positioning.When a fault occurs in a distribution network with distributed power supply,it has become the most important task at present to locate the fault section quickly and accurately.The fault location of distribution network based on Petri net can focus on the relationship between the actual problem and the model,so that the fault area can be found quickly when the fault occurs in distribution network,thus greatly improving the efficiency.However,when the distributed power supply is put into the distribution network and connected to the grid,the structure of the distribution network becomes complex,and the fault location of the distribution network based on Petri net will also be affected,and the number of state information will be multiplied,leading to the poor fault tolerance of this method.Therefore,a fault location method based on particle swarm optimization Petri net was proposed,and the feasibility of the optimized algorithm was compared through the test function.The optimized algorithm was used for simulation analysis in the distribution network nodes with distributed power supply,and the conclusion was drawn.The fault location method based on particle swarm optimization Petri net can locate the fault more quickly and accurately in the distribution network with distributed power supply.