Research on Loss Reduction Method of Station Area Considering Three-Phase Unbalance of Distribution Network
At present,there are more influencing factors of station area loss,and there are three-phase imbalance problems with large differences in three-phase currents,high line loss and power loss.To improve the power supply quality of distribution station area,a loss reduction method of station area considering three-phase unbalance of distribution network is proposed.The impact of three-phase unbalance on the loss of the station area is analyzed.Based on the analysis results,minimizing the unbalance of three-phase currents in the station area,controlling the automatic phase changing device,and adjusting the minimum number of switches during the operation of the station area are taken as the optimization objectives.The optimal solution of the optimization objective function of loss reduction in the station area is obtained by establishing the objective function of loss reduction in the station area and solving the objective function using genetic algorithm.By adjusting the three-phase imbalance,the loss reduction optimization of the station area is completed.The test results show that after optimization with the proposed method,the values of three-phase currents basically match,and the line loss and power loss are reduced.This method effectively reduces the loss of the station area.
Three-phase unbalanceOptimal retrofitGenetic algorithmStation area lossObjective functionNumber of switchesFitness functionBinary coding
NETL
NSTL
万方数据
