Distribution Network Reconfiguration With DG Based On Parallel Artificial Bee Colony Algorithms

Distribution network is usually closed-loop design and open-loop operation.Under the premise of satisfying the line voltage and power quality,the state of contact switch between branch and branch is changed,and the structure of distribution network is reconstructed so as to reduce network loss and improve power quality.According to the characteristics of distribution network,a mathematical model is established.The reconstruction algorithm of mathematical theory,heuristic reconstruction algorithm and artificial intelligence reconstruction algorithm are introduced respectively.A distribution network reconfiguration model with distributed generation is established,which aims at minimizing network loss and node voltage deviation.Parallel artificial bee colony algorithm is used to solve the model,and the optimal network topology model considering network loss and node voltage deviation is obtained.The encoding method based on ring network reduces the generation of infeasible solutions and improves the efficiency of the algorithm.By introducing the evolutionary method of mixed frog leaping,the new individuals of the population can survive,the evolutionary ability of the population is strengthened,and the global search ability of the algorithm is improved.Parallel artificial bee colony algorithm is applied to IEEE33 node distribution system.The reconfiguration model of distribution network with distributed generation is simulated and analyzed by using MATLAB software.Compared with other algorithms,the network loss is reduced by 17.5%,and the lowest voltage is increased by 14.3%.The simulation results verify the effectiveness of the algorithm.According to the actual distribution network data of Tumote Right Banner in Baotou City of Inner Mongolia Autonomous Region and the construction of local distributed power sources,the influence of DG access on the network loss and voltage level of the distribution network in the central urban area is analyzed,and the reconfiguration of the distribution network in the central urban area is analyzed.The optimal reconfiguration scheme to reduce the network loss and improve the voltage quality is obtained,and the feasibility of the algorithm is verified.