Distribution Network Transformer Substation Locating And Sizing Optimization

Distribution network is an important part of the overall power system. It has very important significance to research the Distribution network planning theory deeply for construct the safe and reliable, economic distribution network. Substation locating and sizing planning is an important part of the distribution network planning, Whether the location and size of substation is reasonable, it will directly affect economic of the operation benefits of the electric power enterprise and the operation of the electric network reliability and safety. From the perspective of the life cycle cost of distribution network substation planning project, deeply research the life cycle cost theory of analysis method, based on this theory established the mathematical model of distribution network substation locating and sizing. Model considers planning scheme of substation initial investment cost, operation cost, maintenance cost, fault cost, disposal cost, and both considers the electrical information and geographic information contraints, to make the planning scheme both meet economic optimum and all kinds of constraints and also certain reliability level. On the based of domestic and foreign relevant research literature, summarizes previous research results, through comparison, finally chose particle swarm algorithm as the solution of algorithm.Based on the other scholars’theoretical study in particle swarm algorithm, put forward based on the clustering analysis and swarm random evolution as improvement of the particle swarm algorithm. Through testing of functions to proved optimization ability of this algorithm get improvement, and take it as model of substation locating and sizing planning’s solving algorithm. Finally, Using ArcGIS’s space analysis function (position constraint) to make the planning satisfied the geographical constraints. Based on Microsoft Visual Studio2005development platform, using C#language and ArcGIS Engine components to develop the distribution network substation locating and sizing optimization software, and through an area validation planning of location and sizing to prove the proposed method of this paper is correct and effective, planning results scientific and feasible, has an certain pratical value.