考虑水电库容弹性的电力系统经济调度

温世杨; 余娟; 代伟; 杨知方; 杨高峰; 杨茂查

doi:10.7500/AEPS20200329003

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考虑水电库容弹性的电力系统经济调度

学术研究 | 更新时间：2025-06-16

- 考虑水电库容弹性的电力系统经济调度
- Economic Dispatch of Power System Considering Capacity Flexibility of Hydropower Reservoir
- 电力系统自动化-方正平台 2020年44卷第19期页码：73-82
- 作者机构：
  
  1.输配电装备及系统安全与新技术国家重点实验室（重庆大学），重庆市 400044
  2.广西大学电气工程学院，广西壮族自治区南宁市530004
  3.国网重庆市电力公司，重庆市 400015
- 作者简介：
  
  温世杨(1995—)，男，硕士研究生，主要研究方向：电力系统优化、电力规划、机组组合优化算法。
  余娟(1980—)，女，通信作者，博士，教授，主要研究方向：电力与能源经济优化运行、风险评估、深度学习。E-mail：yujuancqu@cqu.edu.cn
  代伟(1990—)，男，博士，助理教授，主要研究方向：综合能源系统优化运行、静态等值理论。E-mail：weidai2019@163.com
- 基金信息：
  
  国家自然科学基金青年科学基金项目(51807014);重庆市自然科学基金博士后科学基金资助项目(cstc2019jcyj-bshX0081)
- DOI：10.7500/AEPS20200329003
  中图分类号：
- 收稿日期：2020-03-29，
  
  修回日期：2020-06-29，
  
  网络出版日期：2020-08-03，
  
  纸质出版日期：2020-10-10
- 稿件说明：
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温世杨,余娟,代伟等.考虑水电库容弹性的电力系统经济调度[J].电力系统自动化,2020,44(19):73-82.

WEN Shiyang,YU Juan,DAI Wei,et al.Economic Dispatch of Power System Considering Capacity Flexibility of Hydropower Reservoir[J].Automation of Electric Power Systems,2020,44(19):73-82.
温世杨,余娟,代伟等.考虑水电库容弹性的电力系统经济调度[J].电力系统自动化,2020,44(19):73-82. DOI： 10.7500/AEPS20200329003.

WEN Shiyang,YU Juan,DAI Wei,et al.Economic Dispatch of Power System Considering Capacity Flexibility of Hydropower Reservoir[J].Automation of Electric Power Systems,2020,44(19):73-82. DOI： 10.7500/AEPS20200329003.

摘要

随着负荷的增长与新能源的接入，电网运行的安全域不断减小。为此可充分挖掘电网的运行弹性空间，扩大电网运行安全域，实现资源的优化配置。文中提出水电库容弹性空间概念，并建立了考虑来水不确定性和风险成本的库容运行弹性模型；基于此提出了考虑库容弹性空间的经济调度模型，以用于评估考虑库容弹性后的电网运行效益。此外，基于KKT（Karush-Kuhn-Tucker）条件，推导了库容弹性与电网运行状态量之间的灵敏度关系，并提出了关键库容弹性的灵敏度辨识方法，进而在电力系统运行时优先利用关键库容弹性。最后，通过IEEE 30节点系统和某地区的实际电网验证了所提方法的有效性。仿真结果表明，所提方法能够在考虑水库防洪风险控制需求的基础上，有效利用水电库容弹性空间来灵活地调整库存水量，促进水电、风电消纳，降低电网运行成本。

Abstract

With the increase of load and the integration of renewable energy

the operation security region of power grid is decreasing. Therefore

the operation flexibility space of power grid should be fully exploited to expand the operation security region of power grid

so as to achieve the optimal allocation of resources. In this paper

a concept of capacity flexibility space of hydropower reservoir is proposed

and the operation flexibility model for capacity of reservoir considering the uncertainty of water inflow and risk cost is established. On this basis

an economic dispatch model is proposed to evaluate the operation benefit of power grid considering the capacity flexibility of reservoir. In addition

based on Karush-Kuhn-Tucker (KKT) conditions

the sensitivity relationship between capacity flexibility of reservoir and operation state variables of power grid is deduced

and a sensitivity identification method for critical capacity flexibility space of reservoir is proposed to utilize the critical capacity flexibility space of reservoir preferentially in power grid operation. Finally

the effectiveness of the proposed method is verified on IEEE 30-bus system and an actual regional power grid. The simulation results dedicate that， on the basis of considering the demand of flood risk control of a reservoir，the proposed method can effectively utilize the capacity flexibility space of reservoir to adjust the reservoir water storage flexibly， promote the hydropower and wind power consumption

as well as reduce the operation cost of power grid.

关键词

Keywords

references

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