Research on Energy Management Strategy of Photovoltaic-storage-hydrogen-heat Microgrid in Coal Chemical Industry
To solve the problem of coordinated operation of each equipment in the photovoltaic-storage-hydrogen-heat microgrid system in the coal chemical industry scene and meet the operation requirements of"Safe-Stability-Long Cycle-Full Load-Quality"in the coal chemical industry,this paper proposes an energy management strategy based on the combination of energy prediction and real-time power control through in-depth analysis of the operation characteristics of the photovoltaic-storage--hydrogen-heat system and the electricity requirements of coal chemical production.First,with the goal of the lowest electricity cost,combined with the prediction curve of photovoltaic and thermal hydrogen used in coal chemical production,the system energy prediction model was established,and an energy management strategy of the photovoltaic-storage-hydrogen-heat system suitable for the coupling of coal chemical industry and new energy was proposed.The daily operation mode of each equipment was planned.Secondly,considering the operating boundary of hydrogen production,heat storage and energy storage,photovoltaic prediction error,and the constraints of the on-site power grid,based on the dynamic response characteristics of hydrogen production,heat storage and energy storage,a hierarchical control strategy of equipment is designed to dynamically adjust the power set value,and ensure the stable operation of the system under the premise of absorbing new energy as much as possible.Finally,based on the EDPF-NT controller and the MT8020 real-time simulator of Yuankuan Company,the semi-physical simulation platform of energy management strategy is built.Through the analysis of simulation results,the strategy can save about 19.8％of daily electricity costs,and can make full use of new energy to ensure the safety of system power operation.
万方数据
维普
