考虑热能动态平衡的含氢储能的综合能源系统热电优化

在综合能源系统中，电力系统和热力系统通过热电联产机组、电锅炉等装置耦合，对系统内电能和热能进行协调管理，可提高系统的运行灵活性，为系统消纳可再生能源提供新途径。为此，提出了一种考虑热能动态平衡的含氢储能的综合能源系统热电优化模型。首先，建立氢能系统模型，对系统内电解槽、氢燃料电池等设备进行精细化建模，挖掘氢能的利用潜力，提高了系统的运行经济性。然后，基于用户对室温要求的模糊性，引入热功率松弛项使热能保持动态平衡，提高了系统设备出力的灵活性。最后，以综合能源系统运行成本最低为目标函数，以能量平衡、网络安全为约束条件，建立综合能源系统热电优化模型。仿真结果表明，所提模型可在满足用户用能需要的同时降低系统的运行成本，提高风电消纳水平。

Thermoelectric optimization of an integrated energy system with hydrogen energy storageconsidering thermal energy dynamic balance

In an integrated energy system, the power and thermal systems are coupled by combined heat and power units, electric boilers and other devices. Coordination in the management of electricity and heat in the system can improve operational flexibility and provide a new way of absorbing renewable energy. To this end, this paper proposes a thermoelectric optimization model for an integrated energy system with hydrogen storage considering dynamic thermal balance. First, a hydrogen energy system model is established, in which a refined model is formulated of electrolyzers, hydrogen fuel cells and other equipment in the system. It fully taps the utilization potential of hydrogen energy to improve operational economy. Second, based on the ambiguity of user requirements for room temperatures, thermal power relaxation terms are introduced to maintain thermal energy dynamic balance and improve the flexibility of equipment output. Finally, a thermoelectric optimal dispatch model of integrated energy systems is established, in which minimizing operating cost of an integrated energy system is taken as the objective function, and the energy balances and network securities are taken as the constraints. The simulation results show that the proposed model can reduce the operating cost and improve wind power consumption while meeting user energy demand.This work is supported by the National Natural Science Foundation of China (No. 52077030).