Comprehensive Energy Efficiency Evaluation of Distributed Energy System Model Based on Entropy Weight Method

This paper analyzes the indicators affecting the comprehensive energy efficiency of distributed energy systems deeply and ranks the importance of indicators. Based on the relationship among different indicators, a four-level comprehensive evaluation index system is established with the cascade energy conversion rate, energy saving rate and ripple effect as the first-level indicators. The calculation formulas for the four levels of indicators are given combined with the data collected and synthesized by many documents. The data of five groups of first-level indicators are obtained, and the entropy weight evaluation model is established. The corresponding entropy weight of each level of indicators is solved: the energy conversion rate of the step is 0. 3149, the weight of the energy saving rate is 0. 3452, and the weight of the energy efficiency is 0. 3399; and the comprehensive energy efficiency calculation formula of distributed energy system is given on this basis.