Comprehensive Evaluation Study 220kV Electric Power Substation

In recent years,social economy construction is booming,and the demand of social about the electric power continue to increase,in order to protection the residents',enterprise's production,and life needs,power grid planning and construction is increasing.The research on power network planning is also becoming more and more perfect.As one of the most important parts of the power system,the construction of the substation is reasonable and scientific.It will play an important role in the long-term planning of the whole power grid,the investment income and the guarantee of the quality of the power supply.The purpose of the study is the location of substation,combined with a large number of site selection factors,comprehensive,scientific analysis and evaluation of each alternative site,location optimization scheme.First of all,this paper summarizes and analyzes the purpose and importance of substation location,and determines its important position in the whole power system.Then analysis the substation location selection when there are many factors affecting the characteristics and principles of the site.The article mainly includes five aspects: the construction of the grid,the economic benefit,the environmental factor,the social influence and the construction convenience.Including line corridor,the distance from the load center,the total investment in construction,hydrology and meteorology,engineering geology,the government,the attitude of residents and the amount of earthwork and other seventeen specific factors are analyzed.The influence of the target layer,the substation location problem to establish the evaluation index system,comprehensive,comprehensive consideration of the influence factors.Based on the analytic hierarchy process(AHP),the multi objective decision making problem of substation location is transformed from the multi factor decision making problem to the analytic hierarchy process(AHP).At the same time combined with the gray relational analysis method,modified weighting method by combination weighting of indicators of the importance of performance indicators makes weight can better and the degree of influence is the site to determine more persuasive,and validated in practical engineering.