Green and Low Carbon Assessment for Substation Based on Fuzzy Comprehensive Evaluation Model

In the context of achieving carbon peaking and carbon neutrality goals, building sustainable substations throughout their entire life cycle is of paramount importance. To promote the development of green and low-carbon substations, this paper established a comprehensive evaluation index system that spans the planning and design stage, construction stage, and operation and maintenance stage. The Analytic Hierarchy Process (AHP) method is employed to determine the weight of each index, and the fuzzy comprehensive evaluation method is used to assess the green and low-carbon rating of the substation based on the principle of maximum membership degree. To validate the methodology and selected indicators, a 110 kV substation in Fujian province is employed as a case study. The results demonstrate that the project qualifies as a three-star green and low-carbon substation, affirming the reasonability and effectiveness of the chosen evaluation index and the weight assignment method. Consequently, this study provides a valuable theoretical guidance for the evaluation and development of green and low-carbon substations and offers practical references for their construction.