Research And Application Of Energy Demand Side Response Scheduling Strategy In A Park

In recent years,China’s total economy has achieved leapfrog growth,accounting for more than 17% of the world economy.It is the increasingly prominent contradiction between energy consumption and environmental protection behinds the rapid economic development,which brings some challenges to the "3060" plan of China.The integrated energy system can increase the coupling interaction of multiple energy sources,reduce the demand for single energy supply,realize centralized dispatching and cascade utilization of various energy sources,improve the rate of renewable energy consumption in the park,reduce the unit energy consumption and carbon emissions of the park,and effectively enhance the energy efficiency and economic performance of the system.The comprehensive demand response can guide and encourage users to actively change the original energy consumption behavior,reduce the energy demand in peak hours,balance the user load curve and reduce the scheduling frequency of system equipment.Therefore,it is necessary to study the optimal scheduling scheme of integrated energy system participating in integrated demand response,which can not only support the development of integrated energy system in the park,but also effectively balance energy supply and user demand,reduce environmental pollution.Therefore,this thesis studies the demand response scheduling strategy of the integrated energy system in park as follows:（1）Based on a large number of documents at home and abroad,this thesis deeply studies the background and significance of the development of integrated energy system and demand response in the park,and combs the research status of the technology of integrated energy system modeling,demand response and optimal scheduling.（2）Analyze the energy supply structure and energy flow characteristics of integrated energy system in the park,and construct the structure diagram of the system.Study the power output characteristics of various equipment in the energy transfer link of the park,and establish the working model of equipment under variable working conditions.According to the price elasticity matrix,equivalent thermal parameter model and PMV index model,the integrated demand response model including price demand response and adjustment demand response is constructed,which can adjust the electric,cooling and gas load curve of users.（3）Taking some areas of Qingdao Sino-German Ecopark as the research object,this thesis explores the impact of participating in the integrated demand response on the optimal scheduling of the system.The optimization mode aims at the operation cost and carbon emission of the typical day,considers the constraints such as equipment operation,load balance and indoor comfort.The NSGA-Ⅱ optimization algorithm with chaotic operator is used to optimize the system scheduling,and VIKOR method is adopted for decision-making.According to the characteristics of system energy flow,the energy scheduling process is combed,and the optimal scheduling model of integrated energy system participating in demand response is established.Finally,the scheduling results of the system participating in different forms of demand response are analyzed.The results show that participating in the comprehensive demand response can effectively improve the economy and environmental protection of the system.（4）Set up a set of the integrated energy system dispatching management platform on site of the park,including system overview,energy consumption analysis,demand response,optimization solution and other modules,to help managers monitor and manage the electrical equipment of public areas and buildings in the park,set equipment operation strategies and ensure the safety of energy consumption in the park.