Short-Term Scheduling of Pump Station-integrated Cascade Hybrid Pumped Storage Systems

QIAN Jun; TAN Qiaofeng; WEN Xin; SHEN Yanqing; ZHENG Mingfen

doi:10.12454/j.jsuese.202500123

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Short-Term Scheduling of Pump Station-integrated Cascade Hybrid Pumped Storage Systems

更新时间：2025-04-29

- Short-Term Scheduling of Pump Station-integrated Cascade Hybrid Pumped Storage Systems
- Advanced Engineering Sciences Pages: 1-12(2025)
- 作者机构：
  
  1.河海大学水利水电学院，江苏南京 210098
  2.河海大学水安全与水科学协同创新中心，江苏南京 210098
  3.青海黄河上游水电开发有限责任公司，青海西宁 810000
- 作者简介：
- 基金信息：
- DOI：10.12454/j.jsuese.202500123
  CLC： TV743
- Received：27 February 2025，
  
  Revised：25 April 2025，
  
  Published Online：19 May 2025，
- 稿件说明：
移动端阅览
钱骏,谭乔凤,闻昕等.基于增设泵站的梯级混合式抽水蓄能电站短期调度研究[J].工程科学与技术,

QIAN Jun,TAN Qiaofeng,WEN Xin,et al.Short-Term Scheduling of Pump Station-integrated Cascade Hybrid Pumped Storage Systems[J].Advanced Engineering Sciences,XXXX,XX(XX):1‒12.
钱骏,谭乔凤,闻昕等.基于增设泵站的梯级混合式抽水蓄能电站短期调度研究[J].工程科学与技术, DOI：10.12454/j.jsuese.202500123.

QIAN Jun,TAN Qiaofeng,WEN Xin,et al.Short-Term Scheduling of Pump Station-integrated Cascade Hybrid Pumped Storage Systems[J].Advanced Engineering Sciences,XXXX,XX(XX):1‒12. DOI： 10.12454/j.jsuese.202500123.

摘要

在双碳目标指引下中国风、光装机规模激增，新能源消纳难的问题日益凸显。新增储能是促进新能源消纳的重要措施，本文以梯级水电站新建储能泵站形成的梯级混合式抽水蓄能电站为研究对象，提出考虑多级混蓄电站的水库库容动态控制策略，构建基于增设泵站的梯级混蓄电站短期调度模型，并改进传统逐步优化算法对模型进行求解，最后分析梯级混蓄电站的调峰效果和新能源消纳能力，探索泵站不同装机容量对水库水位的影响。以黄河上游梯级混蓄电站为研究实例表明：1）相较传统梯级水电，梯级混蓄电站可通过“削峰填谷”作用显著降低剩余负荷均方差（-49.26%）及峰谷差（-16.38%），增加水电发电量（+12.69%），并减少新能源弃电（-37.54%）；2）通过合理配置多级储能泵站的规模，可以缓解上下级均增设储能泵站的水库水位波动（最大-99.25%），但要重点关注调节库容较小和最末级水库的水位波动；3）多级混蓄电站的水库库容动态控制策略可以通过限制水库库容的变动范围，增加泵站的全功率抽水时长，从而进一步促进新能源的消纳。

Abstract

Objective

Under the guidance of the dual carbon goals

the installation capacity of wind and solar energy in China has surged

and the issue of new energy consumption has become increasingly prominent. The addition of energy storage is an important measure to promote the absorption of new energy. This paper focuses on the pumped storage hydropower system formed by newly built storage pumping stations

proposing a dynamic control strategy for the reservoir capacity of multi-stage hybrid pumped storage power stations. A short-term scheduling study of the multi-stage hybrid pumped storage power station

based on the addition of pumping stations

is conducted. This method aims to achieve efficient operation of the energy storage pumping stations and provide a reference for the integration of new energy consumption and the construction of pumped storage.

Methods

Firstly

a dynamic control strategy for the reservoir capacity of multi-stage hybrid pumped storage power stations was proposed. This strategy was designed to dynamically adjust the reservoir capacity based on the status of the reservoir and energy storage pumping stations

ensuring the efficient utilization of the energy storage pumping stations. Secondly

with the objective of minimizing the mean square deviation of the remaining load

a short-term scheduling model for multi-stage hybrid pumped storage stations

based on the addition of pumping stations

was developed. The traditional step-by-step optimization algorithm was improved to solve this model. Finally

a case study was conducted on the multi-stage hybrid pumped storage power station in the upper reaches of the Yellow River. The impact of the hybrid pumped storage station on peak shaving of the power grid and the absorption of new energy was analyzed. The effects of different installed capacities of pumping stations on the reservoir water level were explored

and the effectiveness of the proposed strategy was verified.Results and Discussions　This study analyzed the impact of cascade hybrid pumped storage (HPS) stations on peak regulation and renewable energy integration in the Qinghai Power Grid using 2021 dry-season data. Two configurations were compared: conventional cascade hydropower stations and cascade HPS stations.Under the conventional hydropower scheme

stations increased output during low-renewable periods to meet grid demand but reduced to forced output during midday renewable peaks

creating a residual load profile with dual peaks (morning/evening) and a midday valley

leading to 28.34% renewable curtailment. In the HPS scheme

hydropower stations also operated at forced output from 11 h to 18 h

while pump stations used curtailed renewable energy for water pumping. The stored water was later converted into electricity during peak hours

flattening the residual load profile

reducing renewable curtailment to 17.70%

and increasing hydropower generation from 260 million kWh to 293 million kWh. Over a typical dry-season week

the HPS scheme reduced residual load variance by 49.26%

while also decreasing the peak-valley difference and mean value.This study

Conclusions

Compared to conventional cascade hydropower systems

cascade hybrid pumped storage systems were shown to demonstrate superior performance by reducing the mean squared error of residual load

increasing hydropower generation

and decreasing the curtailment rate of renewable energy. The rational configuration of pump station capacities was found to mitigate water level fluctuations in reservoirs equipped with energy storage pump stations at both upper and lower levels

although special attention was required for reservoirs with smaller regulation capacities and those at the terminal level. The dynamic reservoir capacity control strategy for multi-level hybrid pumped storage systems effectively extended the full-capacity pumping duration of pump stations

thereby maximizing the utilization of their pumping capabilities.

关键词

Keywords

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