Bistribution Network Reconfiguration Base On Genetic/Tabu Search Hybrid Algorithm

Distribution network reconfiguration is an important part of distribution automation The distribution reconfiguration can improv power system safety and economy ,and develop distribution network potential, and it has tremendous economic and social benefit.So the research of distribution network reconfiguration has been quite active over the past ten years.The paper focus on the problems,including the judgment of infeasible solution,power flow calculation and distribution reconfiguration algorithms.The main contents of this paper are as follows:1.The paper introduces the mathemtical model of distribution reconfiguration in detail.The thesis introduces several methods of distribution power flow and compares them.and then chooses the distribution power flow base on forward/backward sweep method.2.The thesis compares and analyses the characteristics of the algorithm of distribution reconfiguration in detail,and a new genetic/tabu search hybrid algorithm is proposed.The new algorithm has the advantages of the genetic algorithm and the tabu search algorithm,and the paper takes the algorithm use of distribution network reconfiguration.The paper makes some improvements to improve the efficiency of the algorithm.Frist a metheod of mutation which is based on the circle is proposed,second a method of judge early maturity which is based on the comparison of the variance of the fitness is proposed.3.The thesis judges the infeasible solution of the hybrid algorithm which is based on the method of adjoin matrix,and the practical application prove the method is effective.The thesis considers that delete the infeasible solution can make the population lose the diversity,so we take the method of penalty function.,and it can take the purpose of accept the infeasible solution.4.Matlab 6.0 is used to program in the paper.The first is the simulation computation of IEEE 33 node system and PG&E 69 nodes system, and its objective function is base on minimum network loss.The second is the simulation computation of RBTS Bus2 and RBTS Bus4 system ,and its objective function is based on the highest reliability.The result shows that the proposed method is rational and effictive.