Comprehensive Evaluation for Design for Design Scheme of Metro Auxiliary Power supply System Based on FAHP

Considering the main factors that affect the design scheme of power supply system, the fuzzy analytic hierarchy process (FAHP) is used to comprehensively evaluate the design scheme of metro auxiliary power supply system. Firstly, the evaluation model of the auxiliary power supply system design scheme is established, and the factors influencing the system evaluation are divided into two levels, and the factor evaluation grade is the third level. Secondly, analytic hierarchy process (AHP) is used to determine the weight of each factor, and the method of triangular fuzzy number is used to establish a comprehensive evaluation matrix. Finally, the three-level fuzzy comprehensive evaluation is carried out based on the principle of fuzzy transformation, and the comprehensive evaluation results of each design scheme are calculated. The research results show that the comprehensive evaluation score of the parallel centralized power supply mode is the highest, and the design scheme is the best, which is consistent with the actual application. It shows that the method can directly reflect the advantages and disadvantages of each design scheme, and provide some reference for the selection of the design scheme of the auxiliary power supply system of the metro.