Reliability-economic Equilibrium Based Optimal Combination Of Production Factors Towards Hybrid Renewable Power System

Since the reform and opening up,China’s rapid economic development increasing energy demand,a large number of traditional energy mining and unreasonable use,as well as China’s petrochemical energy external dependence is too high,have put forward new requirements for the development of China’s energy industry.In order to effectively alleviate the petrochemical energy crisis and environmental pollution problems,the mixed energy system combining traditional energy and renewable energy sources has become one of the most important industrial forms to develop and utilize renewable energy sources.The cost of traditional energy generation is low,the power supply is stable,but the environment is seriously polluted.Renewable energy generation has the characteristics of intermittent and volatility,which will challenge the stability and reliability of hybrid renewable energy system.The scientific and reasonable allocation scheme is of great significance to improving the system economic profit,reducing the construction cost of mixed renewable energy sources,operation and maintenance cost,fuel cost,ensuring the reliability of power supply,and reducing pollution emissions.Therefore,this paper builds a multi-objective optimization model based on reliability and economic balance,optimizes the production factors of mixed hybrid renewable energy system,and provides suggestions and solutions for investment in hybrid system engineering.This paper first summarizes the output model and economy and reliability evaluation index of power supply equipment in mixed renewable energy system.On this basis,the multi-objective optimization model of hybrid renewable energy system is established,which aims at profit maximization,power outage loss minimization and environmental benefit maximization.The non-inferior solution set is obtained using the NSGA-Ⅱ multi-objective genetic algorithm,and the optimal solution is selected using the entropy-TOPSIS method.Finally,this paper takes the renewable energy demonstration project as an example,collects the data of annual wind speed,solar radiation and load demand,calculates the production factor optimization scheme,compares the practicality of the method according to the optimization results,and further proposes relevant suggestions.The results show that reliability evaluation greatly affects the comprehensive benefits of hybrid energy system engineering.The optimization scheme obtained by this method can ensure reliability and maximize economic benefits.The results of this paper provide some reference value for the construction of mixed renewable energy system engineering and the determination of installation scale.