The Study On Pre-Evaluation Of Dandong Xian 66KV Transmission Project

With the development of economy, the construction of electric power system in our country has become a problem worthy to be discussed, based on the development of substation in our country and our country’s situation of our country the development trend of substation. Substation is an important part of power system, it plays a transformation and control in power system, adjust the voltage, receiving and distribution of electrical energy, through the transformer voltage of power grid connected at all levels of a key role. Problem becomes more and more important, the theoretical system of the feasibility study of our country remains to be perfect, it needs further development.Generation in Dandong region will be 66 KV transformer substation construction project evaluation, we will assess the project’s technical, economic and social benefits from three aspects of objective and scientific evaluation an at the same time,adopt the method of combining quantitative and qualitative analysis, more practical program to select and determine the project investment, obtained better economy combination, so as to effectively promote the sustainable economic and social development goals.Firstly expounds the relevant theories of project comprehensive evaluation and the present situation of the development of these theories at home and abroad; Secondly,this paper discusses multi-level fuzzy comprehensive evaluation model of theoretical basis and the modeling steps; Then, analyze the generation of Xian in Dandong region of 66 KV substation construction projects of technical conditions, economic conditions,social benefits, which laid a foundation for the comprehensive evaluation for the rest of the article. Finally, select the Dandong generation Xian 66 KV transformer substation construction project as a case according to the multi-level fuzzy comprehensive evaluation model to analyze it, to verify the effectiveness of the proposed theory. The results show that the multi-level fuzzy comprehensive evaluation model can well applied to comprehensive assessment of transformer substation construction project in our country, generation of Xian in Dandong region of 66 KV substation construction project is feasible.