| Low carbon energy will make new energy develop rapidly.However,factors such as anti peak regulation,randomness and volatility of new energy output have a huge impact on the power system.Waste incineration power plant can not only complete the task of cleaning up urban garbage and alleviate the situation of garbage siege,but also provide more clean,safe,flexible and economic auxiliary services for power system with large-scale new energy.It is of great theoretical and practical value to study the participation of waste incineration power plants in the optimal operation of integrated energy system with new energy and the optimal dispatch from both sides of the source and load,so as to promote China’s energy transformation,multi energy complementarity and engineering application.Aiming at the integrated energy system composed of wind turbine,waste incineration power plant and ground source heat pump device,this paper analyzes its structure,grid connected operation mode and other characteristics.By analyzing the operation mechanism and system structure of the two sub modules of waste incineration power plant and ground source heat pump device in the integrated energy system,it reveals that the energy efficiency level of existing waste incineration power plants is low A large number of flue gas waste heat has not been effectively utilized and other problems,and the use of ground source heat pump equipment characteristics to propose solutions and demonstrate its rationality.In order to improve the overall energy efficiency and economy of the integrated energy system and expand the accommodation space of new energy such as wind power,the frame structure of waste incineration power plant and ground source heat pump is improved.The waste heat recovery device is used to recover a large amount of waste heat in the treated flue gas,and the ground source heat pump is used to transfer the extracted energy to heat together with the cogeneration unit of waste incineration power plant,And the integrated energy system is modeled as a whole,and the day ahead optimal scheduling model is established with the goal of maximizing the overall operation revenue of the integrated energy system in the scheduling cycle.The simulation results show that the method and model can effectively improve the economy,energy efficiency and new energy consumption of the integrated energy system.In order to further absorb wind power,reduce the cost of external power purchase,and reduce the impact of wind power volatility on the power system,the load side resources should be fully mobilized.Through in-depth analysis of load type and demand response type,and comprehensive consideration of response speed and capacity of various demand responses,a two-stage optimal scheduling model of day ahead and day inside is established.In the day ahead stage,the model calls price type demand response and interruptible load(IL)resources,reduces the abandoned air volume and external power purchase,so as to increase the operation income of integrated energy system;In the intra day phase,based on the optimized operation mode,the heat demand response and direct load control(DLC)resources combined with the flexible scheduling of heat pump device are used to modify the load and ground source heat pump output in real time to follow the wind power output.The simulation results show that the model is reasonable and effective.Considering the coordinated control of resources on both sides of the source and load,the optimal scheduling of integrated energy system including wind power and waste incineration power plant can effectively reduce the impact of wind power fluctuation and increase its economic benefits.With the development of China’s energy structure transformation,the flexible participation of waste incineration power plants in market scheduling will have a broad development space. |
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