发电技术 ›› 2026, Vol. 47 ›› Issue (1): 99-110.DOI: 10.12096/j.2096-4528.pgt.260109

• 储能 • 上一篇    下一篇

基于分层自适应控制的混合储能参与二次调频控制策略

张萍1, 邸宏亮1, 胡龙1, 薛延刚2, 刘海涛1   

  1. 1.兰州理工大学电气工程与信息工程学院,甘肃省 兰州市 733000
    2.重庆水利电力职业 技术学院电力工程学院,重庆市 永川区 402160
  • 收稿日期:2025-01-07 修回日期:2025-03-19 出版日期:2026-02-28 发布日期:2026-02-12
  • 通讯作者: 邸宏亮
  • 作者简介:张萍(1979),女,博士,副教授,研究方向为新能源电力系统建模与控制,415621328@qq.com
    邸宏亮(1997),男,硕士,研究方向为储能在电力系统中的应用,本文通信作者,949228805@qq.com
    胡龙(2000),男,硕士,研究方向为电力系统频率稳定性控制,1507418400@qq.com
    薛延刚(1973),男,博士,教授,研究方向为流体机械故障诊断,xyg3024_cn@163.com
    刘海涛(1997),男,硕士,研究方向为储能在电力系统中的应用,1609278754@qq.com
  • 基金资助:
    国家自然科学基金项目(51867085)

Hybrid Energy Storage Participation in Secondary Frequency Regulation Control Strategy Based on Hierarchical Adaptive Control

Ping ZHANG1, Hongliang DI1, Long HU1, Yangang XUE2, Haitao LIU1   

  1. 1.College of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou 733000, Gansu Province, China
    2.Technical College of Electric Power Engineering, Chongqing Water Resources and Electric Engineering College, Yongchuan District, Chongqing 402160, China
  • Received:2025-01-07 Revised:2025-03-19 Published:2026-02-28 Online:2026-02-12
  • Contact: Hongliang DI
  • Supported by:
    National Natural Science Foundation of China(51867085)

摘要:

目的 针对电池储能辅助火电调频存在难以应对高幅、高频扰动的问题,提出一种基于分层自适应控制的混合储能参与二次调频控制策略。 方法 外层讨论系统剩余能量与比例因子之间的关系,提出基于数学函数方法的比例因子自适应控制策略,在系统当前调频能力的基础上合理分配区域控制信号;同时对内层机组与储能出力进行优化控制,使用变模糊PI控制机组出力,使用变时间常数低阶滤波的双层模糊控制储能出力,在保证储能不过充、过放的前提下,对调频信号进行自适应分配;并使用连续负荷扰动进行仿真分析。 结果 所提比例因子自适应控制策略相比传统定K方法,最大频率偏差减少了2.2%,储能贡献电量降低了31.7%,储能荷电状态维持效果更好。 结论 所提控制策略可以优化系统频率控制,为维护电网频率安全提出新方法。

关键词: 混合储能, 火电机组, 二次调频, 控制策略, 自适应比例因子, 荷电状态, 系统剩余能量

Abstract:

Objectives When assisting the frequency regulation of the thermal power units, battery energy storage faces difficulties in coping with high-amplitude and high-frequency disturbances. To address these issues, a hybrid energy storage strategy for participation in secondary frequency regulation control, based on hierarchical adaptive control, is proposed. Methods The outer layer discusses the relationship between system residual energy and the proportional factor, proposing an adaptive proportional factor control strategy based on mathematical function methods. This strategy reasonably allocates regional control signals based on the system’s current frequency regulation capacity. Meanwhile, the inner layer optimizes the output control of the generation units and energy storage outputs. The unit output is controlled using a variable fuzzy PI controller, and energy storage output is controlled using a two-layer fuzzy control with variable time constant low-order filtering. This ensures that energy storage is not overcharged or over-discharged while adaptively allocating the frequency regulation signals. Simulation analysis is conducted using continuous load disturbances. Results Compared with the traditional fixed K method, the proposed adaptive proportional factor control strategy reduces the maximum frequency deviation by 2.2%, reduces the energy storage contribution by 31.7%, and demonstrates better maintenance performance of state of charge. Conclusions The proposed control strategy can optimize the system’s frequency control and provide a new approach for maintaining grid frequency safety.

Key words: hybrid energy storage, thermal power unit, secondary frequency regulation, control strategy, adaptive proportional factor, state of charge, system residual energy

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