Substation Site Selection Research Based On Grey Theory

Substation is an important part of the power system, its security and stability have an inseparable relationship with the socio-economic development. Therefore, the substation site has a great significance.In grid planning, site selection of the substation is an important part, site selection should be reasonable, because it can directly effect grid architecture of the future and the safety, reliability and economy of the transmission and distribution of electricity. In recent years, people gradually realized the load forecasting should combine urban development planning. for providing land resources to grid. So substation site is very important.Conducting substation site must consider a variety of factors, scientific and rational power supply range and position of the substations can effectively reduce the system power supply situation across the region and improve the efficiency of the management and operation of the power system. There are many substation sitting selection methods, each method has its own advantages and disadvantages. In this paper, the background and current situation of domestic and foreign research topics were analyzed for site evaluation substation overview which focuses on explaining the basic principles of the gray theory, system configuration and gray correlation analysis method, then using the Dragon King Township Henan Fanxian 110 kV substation site as an example, by comparing the application of traditional methods and substation site location method based on gray theory, draw consistent conclusions site selection, demonstrate gray theory based substation siting is an effective method.At present the preliminary design of the substation project has been approved by the provincial company, and into specific design and construction phase. This paper solved many practical problems of the 110 kV Dragon Village substation sitting, and had an important guiding significance and practical significance to the substation sitting.