负荷频繁波动情景下梯级水电站实时调度策略  

Real-time dispatching strategy of cascaded hydropower stations under frequent load fluctuation

作　　者：杨钰琪 莫莉[1,2] 周建中[1,2] 效文静 徐占兴 YANG Yuqi;MO Li;ZHOU Jianzhong;XIAO Wenjing;XU Zhanxing(School of Civil and Hydropower Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Key Laboratory of Digital Valley Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学土木与水利工程学院,湖北武汉430074 [2]华中科技大学数字流域科学与技术湖北省重点实验室,湖北武汉430074

出　　处：《电力自动化设备》2022年第7期205-211,260,共8页Electric Power Automation Equipment

基　　金：国家自然科学基金重点资助项目(U1865202);国家自然科学基金面上项目(51979114)。

摘　　要：在新能源高比例并网环境下,如何安全、高效地发挥水电的调节作用是电网安全稳定运行的关键问题之一。介绍电力系统转型时期梯级水电站面临的负荷频繁波动情景,分析水电站实时调度后效性影响,建立实时尺度下水电灵活性量化准则。在此基础上,提出负荷频繁波动情景下的梯级水电站实时调度策略,采用实时与远期视角相结合、时段出力与调度期末水位同时动态控制的方式满足实时调整需求。算例结果表明,所提实时调度策略在多种负荷波动场景下均可提升水电系统对未来调度时段风险的对冲能力,比传统实时调度策略更适应当前水电运行环境。Under the environment of grid-connection of high proportion of renewable energy,how to utilize the regulation effect of hydropower safely and efficiently is one of the key issues for the safe and stable operation of power grid.The frequent load fluctuation situation faced by cascaded hydropower stations in the period of power system transformation is introduced,the aftereffect influence of real-time dispatching for hydropower stations is analyzed,and the quantitative criterions of hydropower flexibility in real-time scale is established.On this basis,a real-time dispatching strategy of hydropower stations under the situation of frequent load fluctuation is proposed,which adopts the mode of combining real-time and long-term perspectives and dynamically controlling the output of each period and the water level at the end of dispatching period at the same time to meet the demand of real-time adjustment.The case results show that the proposed real-time dispatching strategy can enhance the hedging ability of hydropower system against the risk of future dispatching period under multiple load fluctuation scenarios,and it is more adaptable for the current hydropower operation environment compared with the traditional real-time dispatching strategy.

关 键 词：负荷波动 梯级水电站 实时调度 后效性 调度风险 

分 类 号：TM76[电气工程—电力系统及自动化]