黄河流域梯级水储能开发模式研究

Research on Development Modes of Cascade Water Energy Storage in the Yellow River Basin

中文关键词:梯级水储能  多目标优化  水库清淤  储能泵站  可逆式机组

keywords:cascade water energy storage  multi-objective optimization  reservoir dredging  energy storage pump station  reversible unit

中文摘要:提出一种考虑水库清淤、储能泵站、可逆式机组扩容改造等方式的梯级水储能开发模式优化方法。首先，确定梯级水储能系统运行边界和约束；其次，考虑大规模新能源接入边界，建立梯级水储能短期多目标优化调度模型；最后，采用多目标模糊评价方法，定量分析不同开发措施对梯级水储能系统的发电和调峰的影响。以黄河流域某梯级水储能系统为研究对象，研究结果表明：水库清淤能够使梯级水电站调峰性能平均提高27.8%；增设储能泵站和可逆式机组分别将梯级水储能系统整体发电-调峰性能提升11.3%和41.0%；梯级水储能最佳开发模式为水库清淤与可逆式机组扩容改造。

Abstract:This paper proposes an optimization method for cascade water energy storage development mode that considers reservoir dredging，energy storage pump station，and reversible unit expansion renovation. First，the operating boundaries and constraints of the cascade water energy storage system are determined. Second，considering large-scale new energy access boundaries，a short-term multi-objective optimal dispatch model of cascade water energy storage is established. Finally，the multi-objective fuzzy evaluation method is adopted to quantitatively analyze the impacts of different development measures on power generation and peak shaving of the cascade water energy storage system. Taking a cascade water energy storage system in the Yellow River basin as the research object，the results show that reservoir dredging can improve the peak shaving performance of cascade hydropower stations by 27.8% on average； adding energy storage pump stations and reversible units can improve the overall power generation peak shaving performance of the cascade water energy storage system by 11.3% and 41.0% respectively； the optimal development mode of cascade water energy storage is reservoir dredging and reversible unit expansion renovation.