Research on Performance Evaluation of Integrated Energy System Based on Carbon Footprint Analysis and Scorecard Modeling

This study introduces the structural models and operational characteristics of several typical integrated energy system scenarios, and analyzes the mathematical models and working principles of the main equipment in the New Energy-Combined Cooling Heating and Power (NE-CCHP) system. Combined with the characteristics of the integrated energy system and the deficiencies of the existing energy system evaluation system, the direct and indirect carbon emissions of the integrated energy system during its life cycle are analyzed from the perspective of the carbon footprint, and a set of multidimensional evaluation index system dominated by the carbon footprint is established through the “Pressure-State-Response” model. The evaluation system combines the environmental, energy, reliability, economic and social aspects of the system to evaluate the performance of the integrated energy system. The hierarchical analysis method (AHP), CRITIC method and scorecard model were combined. The AHP method and CRITIC method were used to calculate the subjective and objective weight values respectively, and then the dynamic combination weight method was used to calculate the combination weights, and then the comprehensive score of the system was calculated based on the scorecard model. A construction project in a region of Xinjiang was selected as the research object for the study.