Research On Optimal Dispatching Of Park Integrated Energy System Considering Electricity And Heating Comprehensive Demand Response

There are a large number of renewable energy sources such as wind and solar in my country’s "Three North" area,and there is a conflict between electric heating demand during the winter heating period,which makes the energy utilization rate and the level of wind and solar consumption low.The integrated energy system of park is one of the effective ways to solve the problems of low efficiency of social energy utilization and the difficulty of absorbing renewable energy.Optimizing the dispatch of the system by coordinating the output of each unit can reduce the operating cost of the system to a certain extent and increase the online space of new energy power generation.At the same time,demand response technology can achieve two-way interaction between the power generation side and the load side,further improving the level of wind and solar consumption and energy utilization.In response to this topic,this paper studies the effectiveness of the system’s new energy consumption level and energy utilization efficiency through the benign interaction between the source and the load by considering the participation of the integrated electric and heating demand response in the optimal dispatch of the integrated energy system of the park.The article summarizes the research status of domestic and international park integrated energy systems and demand response technology,and at the same time describes the research status of demand response technology in system optimization scheduling.The framework of the integrated energy system of the park and the mathematical model of each unit are constructed.Describe the price-type,incentive-type and substitute-type demand response types and construct mathematical modeling to lay the foundation for the follow-up research of the article.An optimal dispatch model of electric and heating integrated demand response considering the participation of dispatch expected signals is constructed.First,consider the excitation response under the participation of electric load,model the group aggregation characteristics of the time-shiftable electric load,and construct the electric load response model with the goal of minimizing the deviation between the dispatch signal and the load group aggregation characteristic model.Then build a thermal load response model based on the fuzziness of human body’s perception of temperature.The results of calculation examples show that the model proposed in this paper has advantages in improving the utilization rate of renewable energy such as wind and solar systems and reducing the overall cost of the system.An optimal dispatch model of the park’s integrated energy system is constructed that takes into account thermal inertia and price-based demand response.According to the thermal inertia principle of heating network and heating buildings,a heating thermal load response model is constructed,and the autoregressive moving average model ARMA is used to accurately describe the heat transfer process,and the thermal response is optimized and dispatched with human comfort as the constraint.The electricity load response model is constructed based on price-based demand response,and the user satisfaction with electricity consumption and the satisfaction of electricity consumption expenditures are used as measurement indicators to optimize the dispatch analysis of the park’s integrated energy system.The results of calculation examples show that the overall operating cost of the system is the lowest when considering the integrated demand response of electricity and heating,and the abandonment rate of renewable energy such as wind and solar is significantly reduced,and the system can save energy and reduce emissions.