Abstract: Abstract:In present comprehensive decision method of power transmission grid plan, there is certain subjectivity in decision process implementation, and it is difficult to meet the data requirement. Aiming at above problems, a gray fuzzy comprehensive decision method of power grid plan based on entropy weight and normalized sample was proposed. The first step is to use the entropy weight method to calculate the influence weight of various indexes on power grid plan quality. The subsequent work is to use the normalized sample matrix to simulate the expert evaluation. The method can avoid the subjectivity and contingence in weight determination and can reduce a lot of artificial operation caused by largescale sample. Then, according to the gray fuzzy assessment theory, the quality grade of various plans can obtained, and the decision can be made. At last, the feasibility of the method in this paper was verified by simulation example.

Key words: Keywords:power transmission grid, entropy weight method, gray fuzzy, plan of transmission grid, normalized sample