| 引用本文: | 徐晓庆,柴旭峥,崔 杨,等.含混合式抽水蓄能的梯级水电系统多时间尺度调度策略[J].电力系统保护与控制,2025,53(19):25-38.[点击复制] |
| XU Xiaoqing,CHAI Xuzheng,CUI Yang,et al.Multi-time scale scheduling strategy for cascade hydropower systems with hybrid pumped storage[J].Power System Protection and Control,2025,53(19):25-38[点击复制] |
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| 摘要: |
| 为支撑构建新型电力系统，水电角色定位已由“电能供应者”逐渐变为“电能供应者+灵活调节者”。而水电传统日前调度方法并未涉及水电参与日内等短时间尺度下的功率平衡调节，导致其无法应对电力系统短时新能源波动情况。为此，提出一种含混合式抽水蓄能的梯级水电系统多时间尺度调度方法，以深入挖掘水电灵活调节潜力。首先，基于混合式抽水蓄能运行特点，分析其新能源消纳能力，并从电量、水量方面分析其参与电力系统实时功率平衡调节存在的问题。其次，构建梯级水-风-火-蓄联合系统多时间尺度调度框架。在实时阶段引入水库水位允许波动范围的概念，以限制调度期末水库水位与期望水位间的水位变幅，达到兼顾水电中长期调度水位边界条件的目的。最后，以系统总成本最小为目标，在IEEE39节点系统进行算例分析。结果表明，混合式抽水蓄能参与电力系统实时功率平衡调节可提高系统调节能力，助力系统实现安全经济低碳运行。 |
| 关键词: 混合式抽水蓄能 梯级水电 多时间尺度 灵活调节 新能源消纳 |
| DOI：10.19783/j.cnki.pspc.241661 |
| 投稿时间：2024-12-12修订日期：2025-01-08 |
| 基金项目:国家重点研发计划项目资助(2022YFB2403000) |
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| Multi-time scale scheduling strategy for cascade hydropower systems with hybrid pumped storage |
| XU Xiaoqing1,CHAI Xuzheng2,CUI Yang1,TANG Yaohua3,YANG Mao1 |
| (1. Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education
(Northeast Electric Power University), Jilin 132012, China; 2. State Grid Henan Xuchang Electric Power Company,
Xuchang 461000, China; 3. China Resources Power Holdings Co., Ltd., Shenzhen 518000, China) |
| Abstract: |
| To support the construction of new power systems, the role of hydropower has gradually shifted from being solely an “power supplier” to an “power supplier + flexible regulator”. However, traditional day-ahead scheduling methods for hydropower do not account for short-term power balancing at intra-day or real-time scales, limiting their ability to cope with short-term new energy fluctuations. To address this issue, a multi-time scale scheduling method for cascade hydropower systems with hybrid pumped storage is proposed to fully explore the flexible regulation potential of hydropower. First, based on the operation characteristics of hybrid pumped storage, its new energy consumption capacity is analyzed, along with challenges in participating in real-time power balancing from both energy and water perspectives. Second, a multi-time scale scheduling framework for an integrated hydro-wind-thermal-storage system is constructed. In the real-time stage, the concept of an allowable fluctuation range of reservoir water level is introduced to limit the water level fluctuation between the end-of-period and target water levels, thereby ensuring compliance with medium- and long-term reservoir level boundary conditions. Finally, case studies are carried out on the IEEE39-bus system with the objective of minimizing total system cost. The results show that incorporating hybrid pumped storage into real-time power balancing improves the system regulation capability and facilitates safe, economical, and low-carbon operation. |
| Key words: hybrid pumped storage cascade hydropower multi-time scale flexible regulation new energy consumption |
