Comprehensive Evaluation of AC-DC Distribution Network in Photovoltaic-Energy Storage Charging Station Based on AHP-TOPSIS Method

Increasing studies have shown that DC distributi on will contribute substantially to future photovoltaic-energy st orage charging station (PV-ES CS) owing to the high efficiency and play an important role in distribution networks. It is neces sary to comprehensively compare low voltage DC (LVDC) with AC (LVAC) distribution networks for planning and design of PV-ES CS. This paper presents a comprehensive evaluation mo del of the distribution system based on AHP-TOPSIS theory. The evaluation index system, including reliability, economy and adaptability, is proposed based on the difference of AC and DC distribution network structure and performance. The propose d approach integrates ideal solution (TOPSIS) and Analytic hie rarchy process (AHP) to determine the weights. Finally, the re sults obtained from the case studies have demonstrated the rati onality and feasibility of proposed evaluation model. It is instru ctive to the application and popularization of DC PV-ES CS.