Research On Optimal Operation And Multi-criteria Comprehensive Evaluation Of Distributed Energy System

In order to cope with climate change,reduce environmental pollution,achieve carbon peak,carbon neutral and "3060 goal",many industries and areas have accelerated the pace of carbon reduction,energy structure transformation is the only way to achieve this goal.As a clean and efficient new energy utilization technology,distributed energy system has the advantages of good environmental protection performance,high energy utilization rate,safety and reliability,etc.,it can promote the smart transformation of low-carbon energy,high-quality development of new energy,and gradually become the focus of attention in the energy field.This paper takes distributed energy system as the main research object and system optimization as the main clue,establishes the corresponding optimal scheduling model,and explores the solution method of the model.Firstly,the structure and operation mode of distributed energy system are analyzed.Based on the study of the operation principle and characteristics of distributed power generation equipment,the mathematical models of wind power generation,photovoltaic power generation,gas turbine and other main equipment in distributed energy system are established.Secondly,in view of the building type distributed energy system,considering the minimum cost of primary energy consumption,environment compensation and operation and maintenance,the optimal dispatching model is established,and the GA-NLP fusion algorithm is used to determine the optimal output value.The results show that the distributed energy system optimal scheduling model can effectively improve the economy of the system,and it is an effective means to achieve energy saving and emission reduction.Subsequently,aiming at the regional distributed energy system,this paper takes the gas-steam combined cycle cogeneration unit as the main research object,analyzes the influence of environmental factors on the gas-steam combined cycle,establishes the equipment characteristic model,designs the optimal distribution scheme,and puts forward the optimal load distribution algorithm among units with different operation modes to realize the optimal dispatch system of thermoelectric load.The field operation results show that the optimal scheduling system can reduce fuel consumption effectively,and provide the optimal scheduling scheme quickly to guide the operators to adjust the operating state reasonably,meet the production needs and reduce operating costs.Finally,a VIKOR multi-criteria comprehensive evaluation method based on AHP-entropy weight method is proposed,and a multi-attribute comprehensive evaluation index system and a comprehensive decision model are established.Through the comprehensive performance analysis and comparison of several design schemes of distributed energy system in a certain building,the design of distributed energy system can be objectively and comprehensively judged by ranking the schemes,thus providing a new idea for the evaluation and decision-making of design schemes of distributed energy system.The research on the optimized operation and comprehensive evaluation method of the distributed energy system is conducive to giving full play to the advantages of the distributed energy system,enhancing the comprehensive benefits of the system and the capability of absorbing intermittent renewable energy such as wind power and photovoltaic power generation,and providing theoretical basis and decision-making methods for the selection of the design schemes and system configuration of the distributed energy system,so as to promote the further development and application of the distributed energy system.