Research On Substation Location Based On Entropy Weight And TOPSIS Method

The city grid is the important infrastructure of city. Economic development of the city is the demand for power growth needs, and is the impulsion of development of city network. The development of city network is harmonized with city construction, which guarantees the important conditions of safe and stable of economic operation of power grid and urban economy healthy development, and increase people's living standards . Gird investment is large proportion in the whole power infrastructure for the whole power system.Optimizing of power network can save funds for investment sectors. In the power grid planning work, the optimization of substation hail is an important task. It is the basis of the load forecast, and the result can directly affect the whole network structure of grid construction and economic of operation. The superiority of substation of power system network is decisive role. Whether substation allocation and layout choose reasonable or not, is a critical role for infrastructure, construction speed, economic and safe of operation. The practice proves that good substation position can ensure strong power system frame. And little interference effects, so that it is able to operate economic and stable, otherwise, it will give power construction loss and waste.Evaluation sorting for substation position in certain statement is to find a goal which achieve optimal in reliability and operational economy), through analysis and computer factors of affecting substation position election. Because of so many factors, we should establish a set of reasonable evaluation index system and choose a reasonable evaluation model. Based on the study of domestic and foreign literatures on substation planning and location, we have a in-depth study of theories and processes about substation. Summarize the main factors of influence substation location: load distance, saves the land, topography and geology, lines corridor and so on; And constructs the substation stood location two levels evaluation index system, involving six aspects and eighteen basic indicators; In addition, according to the location of transformer substation in gird planning, and puts forward the principle and influence factors in entropy weight and TOPSIS method to evaluate and treat choose hail sorting, evaluating 220KV Substation site of south Chengde city with entropy weight and TOPSIS method.