Comprehensive Evaluation Of Integrated Energy System Based On Measured Data

As an important direction of energy reform,integrated energy system has become the focus of research and attention of all countries in the world.The construction of integrated energy system can improve the reliability and flexibility of social energy supply system,improve the efficiency of social comprehensive energy utilization,and bring good social and economic benefits and social and environmental benefits.China has successively implemented many demonstration projects of the integrated energy system as pilot projects to promote the construction of the integrated energy system.Assessment of the integrated energy system is an important feedback link to promote the construction of the integrated energy system and can provide references for the next stage of development.Therefore,it is necessary to assess the integrated energy system.This thesis takes the integrated energy system of a domestic park as the research object and assesses the park integrated energy system based on the measured data.The research contents of this paper are as follows:First,based on understanding the background and general situation of the park integrated energy system,the original data of the operation of the park from January to July 2017 are processed,from which we can get the data of energy supply,energy consumption,and operation situation,operation characteristics from January to July.The daily hourly operating data of the subsystem are processed,from which we can get the working model,energy supply,and energy use of each subsystem.The work above provides the basis of thinking,judgment basis for constructing an assessment index system,and data support for index calculation.Then,to comprehensively assess the park integrated energy system,considering the multi-energy flow and multi-coupling characteristics,electricity,heat,and cold are all included in the energy forms to be assessed.Through a large number of related literature research and expert consultation,combining the practical operation of park integrated energy system,the suitable indexes for assessment objects are extracted,index assessment system is built from the three dimensions of technology,economy,environmental protection,including 8 first-level indexes,12 second-level indexes,12 third-level indexes.Determine the calculation method of each index,completing the calculation of the index.Finally,by comparing the common evaluation methods,combining three methods of a fuzzy comprehensive evaluation,analytic hierarchy process and entropy weight method based on the idea of combined assessment is for assessing the park integrated energy system comprehensively,verifying the feasibility and rationality of the assessment index system.Based on the assessment results,combined with the operational analysis of the park integrated energy system and the calculation results of the index,the advantages and disadvantages of the park integrated energy system operation are analyzed respectively from the technical,economic and environmental aspects.