Research On Multi Index Evaluation Method Of Integrated Energy System Based On AHP-Entropy Weight Method

In recent years,with the introduction of policies to promote energy reform,more and more attention has been paid to the development of integrated energy system.In this context,a large number of integrated energy system projects have been constructed and put into use,and many topics about integrated energy system have become research hotspots.Among them,the multi index evaluation of integrated energy system is deeply concerned.Before the construction of the actual integrated energy system project,it is necessary to comprehensively evaluate multiple system design schemes,and take the evaluation results as an important basis for selecting the best.Therefore,this paper takes the multi index evaluation of the integrated energy system as the research direction,and the main work content,innovation points and research results are as follows:Firstly,the definition and structure of the integrated energy system are described,and the working principles of several typical integrated energy systems and traditional energy systems are introduced in detail.Then,according to the multi index evaluation of the integrated energy system,from the three dimensions of energy,environment and economy,An evaluation system with 15 indexes is put forward,and the hierarchical structure of the index system is divided.The first level includes 9first level indexes,and the second level includes 10 second level indexes.The definition of each index is made clear,and the mathematical model of each index is provided for comprehensive evaluation.Then,the advantages,disadvantages and application scope of common comprehensive energy system evaluation methods are introduced.In order to take into account the subjectivity and objectivity of the evaluation,the combination weight of indicators is obtained by combining analytic hierarchy process(AHP)and entropy weight method.On this basis,the gray correlation analysis method is proposed to evaluate the combination weight.Then,the evaluation method is introduced in detail Then,the comprehensive energy system project of a hospital is selected as an example,according to the load demand and energy supply conditions of the example,and combined with several typical system st ructures that have been analyzed,four schemes are designed,and each scheme is integrated by using the proposed multi index evaluation system and evaluation method Finally,the best system scheme is obtained,and the effectiveness of the multi index evalu ation system and evaluation method is verified.Last,This paper analyzes the comprehensive evaluation results of the example,discusses and obtains the advantages and disadvantages of each design scheme and the reasons for this situation,analyzes the reasons for the difference of the index values of each scheme by comparing the index data obtained from the calculation,compares the initial weight,correction coefficient and the numerical proportion of the combination weight of various indexes,and analyzes the influence of the index weight on the comprehensive evaluation results By comparing the calculation results of different weighting evaluation methods,it is concluded that the combined weighting evaluation method can better meet the expectations of de cision makers and the calculation results are more accurate than the single weighting evaluation method,which verifies the superiority of the comprehensive evaluation method proposed in this paper.