配电网与分布式电氢耦合系统的交互策略研究

A study on the interactive strategy for distribution networks and distributed electro-hydrogen coupled systems

针对新能源大规模接入给配电网安全运行带来的影响,开展了含混合储能的分布式电氢耦合系统与配电网间的多时间尺度交互策略研究。首先,提出分布式电氢耦合系统与配电网之间的平衡服务机制、需求响应机制等多元交互机制;其次,基于博弈理论,制定了电氢耦合系统与配电网之间的中长期与短期交互策略;最后,以某一典型区域的配电网与分布式电氢耦合系统为例进行仿真分析。算例结果表明:氢储能因其跨周期特性在中长期交互中具有优势;电化学储能响应迅速更适合短期交互;相较于单一形式储能系统,电氢混合储能系统能够有效降低峰谷差,提高系统收益,更契合现有配电网体系。

In response to the impact of the widespread integration of new energy sources on the secure operation of distribution networks,a study is undertaken to explore a multi-time scale interactive strategy for distributed electro-hydrogen coupled systems,incorporating hybrid energy storage and distribution networks.Firstly,interactive mechanisms including the balancing service mechanism and demand response mechanism between distributed electro-hydrogen coupled systems and distribution networks are proposed.Secondly,based on game theory,medium-to-long-term and short-term interactive strategies are formulated for electro-hydrogen coupled systems and distribution networks.Finally,a simulation analysis is executed utilizing the distribution networks and distributed electro-hydrogen coupled system in a representative region as an illustrative example.The outcomes of the case study underscore that hydrogen storage exhibits an advantage in medium-to-long-term interactions due to its cross-period characteristics.Electrochemical storage,distinguished by its rapid response,proves more suitable for short-term interactions.In comparison to singular energy storage systems,a hybrid electro-hydrogen storage system can ef⁃fectively mitigate difference between peak and valley loads,enhancing system benefits,and seamlessly aligning with the existing distribution network system.