中国电力 ›› 2025, Vol. 58 ›› Issue (9): 148-163.DOI: 10.11930/j.issn.1004-9649.202502018

• 新型电网 • 上一篇    下一篇

低惯量电力系统频率安全约束优化运行研究综述与展望

傅国斌1(), 杨凯璇1, 孙海斌1, 文棋璇2, 赵焕蓓1, 文云峰2()   

  1. 1. 国网青海省电力公司电力科学研究院,青海 西宁 810000
    2. 湖南大学 电气与信息工程学院,湖南 长沙 410082
  • 收稿日期:2025-02-11 发布日期:2025-09-26 出版日期:2025-09-28
  • 作者简介:
    傅国斌(1993),男,工程师,从事电力系统分析、电网运行与控制研究,E-mail:fgbin0814@163.com
    文云峰(1986),男,通信作者,博士,教授,博士生导师,从事低惯量电力系统规划、运行与控制研究,E-mail:yunfeng.8681@qq.com
  • 基金资助:
    国家自然科学基金资助项目(52077066);国网青海省电力公司科技项目(522807240005)。

Frequency Security Constrained Optimal Operation of Low-Inertia Power Systems: Review and Prospects

FU Guobin1(), YANG Kaixuan1, SUN Haibin1, WEN Qixuan2, ZHAO Huanbei1, WEN Yunfeng2()   

  1. 1. Electric Power Science Research Institute, State Grid Qinghai Electric Power Company, Xining 810000, China
    2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
  • Received:2025-02-11 Online:2025-09-26 Published:2025-09-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No.52077066), Science and Technology Project of State Grid Qinghai Electric Power Company (Demand Assessment of Active Support Capability and Dynamic Parameter Adjustment Technology of New Energy Field Station Adapted to System Frequency Safety Constraints, No.522807240005)

摘要:

随着电力电子接口资源渗透率的快速提升,电力系统惯量水平显著降低,传统同步机主导的电力系统频率动态特性发生深刻变革。系统梳理低惯量电力系统频率安全约束优化运行的关键问题、建模方法及求解策略,分析现有研究的局限性,并提出未来研究方向。在阐明低惯量电力系统优化运行面临的难点问题和挑战的基础上,从日前、日内、实时3个时间尺度总结低惯量电力系统优化运行模型的研究进展;进而,深入探讨非线性频率安全约束的多种类重构方法及源-荷不确定性处理方法;最后,给出多时间尺度协同优化、电力电子设备交互影响等前沿方向,以期为低惯量形态下中国新型电力系统的优化运行和频率安全提供参考。

关键词: 惯量, 频率安全, 优化运行, 调度控制, 机组组合, 最优潮流

Abstract:

With the rapid increase in penetration rate of power electronic interface resources, the level of power system inertia is significantly reduced, and the frequency dynamic characteristics of the power system dominated by the traditional synchronous machine undergoes a profound change. In this paper, we systematically sort out the key issues, modeling methods and solution strategies for the frequency security constrained optimization operation of low-inertia power systems, analyze the limitations of the existing researches, and propose the future research directions. Firstly, on the basis of elucidating the difficult problems and challenges facing the optimal operation of low-inertia power systems, the research progress of the optimal operation model of low-inertia power systems is summarized from three time scales: day-ahead, intra-day, and real-time. And then, the multi-category reconstruction methods for nonlinear frequency security constraints and the approaches to handle source-load uncertainty are discussed in-depth. Finally, the cutting-edge directions such as multi-timescale coordinated optimization and interactive influences of power electronic devices are outlined, aiming to provide insights for optimizing operation and ensuring frequency security of China's new power system under low-inertia conditions.

Key words: inertia, frequency security, optimal operation, dispatch control, unit commitment, optimal power flow


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