考虑制氢设备启停过程的综合能源微网优化调度

Optimal dispatch for integrated energy microgrid considering start-up and shut-down processes of hydrogen production equipment

随着可再生能源的发展和“双碳”战略需求的提出,以氢能为核心的综合能源微网优化调度越来越受到学术界和工业界的重视。然而目前的研究集中在电解槽,而忽略了系统级的运行和控制,导致微网调度成本居高不下。为此,提出一种考虑制氢设备启停过程的综合能源微网优化调度方法。首先,分析了制氢设备的启动和停止过程,阐述了制氢设备各组件在系统运行过程中的工作模式。然后,基于多物理模型分析法,建立启动过程中氢气逸出量与系统压力变化的关系。同时,为避免由于系统反馈控制所导致的复杂计算,给出基于等效原则的关键参数简易解法。最后,为了验证以上分析和计算的有效性,构建了基于真实数据的微网经济优化调度仿真算例。实验结果表明:考虑了制氢系统启停过程后,设备寿命损耗和电解槽温度损耗进一步减少;同时,与传统方法相比,微网的运行成本实现了大幅降低。

With the development of renewable energy and the needs of the carbon emission peak and carbon neutral-ity strategy,the optimal dispatch of integrated energy microgrid with hydrogen energy as the core has attracted more and more attention from academia and industry.However,system-level operation and control are neglected,result-ing in the high cost of dispatch in microgrid.Hence,an optimal dispatch method for integrated energy microgrid con-sidering start-up and shut-down process of hydrogen production equipment is proposed.Firstly,the start-up and shut-down processes of the hydrogen production equipment are accurately analyzed and the working modes of the components of the hydrogen production equipment during the system operation are expounded.Secondly,the rela-tionship between hydrogen evolution and system pressure change during the start-up process is established based on multi-physics model analysis method.At the same time,to avoid the complex calculation caused by the system feed-back control,a simple solution of key parameters based on the equivalence principle is given.Finally,to verify the validity of the above analysis and calculation,a simulation example of economic optimal dispatch for microgrid based on real data is constructed.The experimental results show that the equipment life degradation and the tempera-ture loss of the electrolyzer are further reduced after considering the start-up and shut-down processes of the hydro-gen production system,and the operation cost of the microgrid is greatly reduced compared with the traditional method.