摘要
针对梯级水电实时调度过程根据电网运行实际及上下游水情变化进行必要的出力重新分配时,需兼顾快速、公平、优化等特点,提出了基于实时弃水风险评估的梯级水电优化调度方法,并详述了模型的构建及求解方法。引入预弃时间定义弃水风险,并根据弃水风险开展出力调整,体现了调度的公平性;在进行出力调整过程中,引入流量滞时并将优化前后梯级总出力不变作为约束条件,既保证了电力平衡及电网通道等安全约束,又体现了梯级上下游紧密的电力及水力联系。经应用表明,该方法能够快速可靠的满足实际运行需求,可为解决同类问题提供参考。
In view of the necessary output redistribution in the real-time scheduling process of cascade hydropower stations considering the situation of actual grid operation and upstream and downstream water regime change,the optimal scheduling method of these stations based on real-time abandoned water risk assessment is proposed considering the factors of rapidity,fairness and optimization.The construction and solution of the model are described.The pre-abandoned time is introduced to define the risk of water abandonment and the output of cascade hydropower stations is redistributed based on abandoned water risk,which reflects the fairness of real-time scheduling.In the process of output redistribution,the flow delay time is introduced and the constant total output of cascade hydropower stations before and after optimization is taken as a constraint,which can not only guarantee the security constraints of power balance and channel capability,but also reflect the close power and hydraulic connections between the upstream and downstream stations.The application shows that the method can quickly and reliably meet the actual operation requirements,and can provide a reference for solving similar problems.
作者
苏华英
王国松
廖胜利
SU Huaying;WANG Guosong;LIAO Shengli(Guizhou Electric Power Grid Dispatching and Control Center,Guiyang 550002,Guizhou,China;Dalian University of Technology,Dalian 116024,Liaoning,China)
出处
《水力发电》
北大核心
2020年第8期80-83,共4页
Water Power
基金
国家自然科学基金资助项目(51979023)。
关键词
实时调度
弃水风险
梯级优化
预弃时间
real-time scheduling
abandoned water risk
cascade optimization
pre-abandoned time
