发电技术 ›› 2026, Vol. 47 ›› Issue (1): 89-98.DOI: 10.12096/j.2096-4528.pgt.260108

• 储能 • 上一篇    下一篇

多运行阶段下飞轮储能耦合火电机组调频控制策略

洪烽, 梁博洋, 孙风东, 梁璐, 王玮, 房方   

  1. 华北电力大学控制与计算机工程学院,北京市 昌平区 102206
  • 收稿日期:2025-01-11 修回日期:2025-03-02 出版日期:2026-02-28 发布日期:2026-02-12
  • 作者简介:洪烽(1991),男,博士,副教授,研究方向为储能+发电支撑电网调频运行,hongf@ncepu.edu.cn
    梁博洋(2000),男,硕士研究生,研究方向为构网型储能,liangboyang39@163.com
    孙风东(1998),男,硕士研究生,研究方向为飞轮储能辅助电力系统一次调频,sfd0519@163.com
    梁璐(1998),男,博士研究生,研究方向为储能辅助电网调频控制优化,13051539101lianglu@ncepu.edu.cn
    王玮(1976),男,博士,教授,研究方向为新能源发电控制与并网等关键技术,wwang@ncepu.edu.cn;
    房方(1976),男,博士,教授,研究方向为智能发电理论与技术,ffang@ncepu.edu.cn
  • 基金资助:
    国家自然科学基金项目(52376007)

Frequency Regulation Control Strategy for Flywheel Energy Storage Coupled With Thermal Power Units Under Multiple Operation Stages

Feng HONG, Boyang LIANG, Fengdong SUN, Lu LIANG, Wei WANG, Fang FANG   

  1. School of Control and Computer Engineering, North China Electric Power University, Changping District, Beijing 102206, China
  • Received:2025-01-11 Revised:2025-03-02 Published:2026-02-28 Online:2026-02-12
  • Supported by:
    National Natural Science Foundation of China(52376007)

摘要:

目的 飞轮储能辅助火电机组参与调频被广泛应用在电网调频领域,针对目前常用储能控制策略未能充分考虑频率在不同变化阶段的运行需求,提出了一种考虑正负惯性影响的飞轮储能-火电机组自适应调频控制策略。 方法 考虑了在频率变化的不同阶段正负惯性控制对频率恢复的影响,提出一种动态工况下的火储耦合系统自适应调频控制方法,充分融合了惯性控制与下垂控制的优点,根据系统频率偏差与储能实时荷电状态自适应调整控制策略。 结果 在阶跃扰动下,所提策略最大动态频差减少2.8%,稳态偏差减少2.9%,稳定时间减少17 s,SOC的变化曲线平滑;在连续扰动下,所提策略可减小8.1%的频率偏差,减小52.8%的火电机组出力,储能系统SOC在整个指令期间能够维持在较好区间。 结论 所提策略能够提升系统调频性能,减少机组出力波动的同时兼顾储能系统的荷电状态管理。

关键词: 新能源, 飞轮储能, 下垂控制, 调频, 正负惯性, 自适应切换, 荷电状态

Abstract:

Objectives Flywheel energy storage that assists thermal power units to participate in frequency regulation is widely used in the field of grid frequency regulation. In view of the fact that the current commonly used energy storage control strategies fail to fully consider the operating requirements of frequency in different stages of change, an adaptive frequency modulation control strategy for flywheel energy storage-thermal power units is proposed that considers the effects of positive and negative inertia. Methods Considering the effects of positive and negative inertia control on frequency recovery at different stages of frequency variation, this study proposes an adaptive frequency control method for a thermal power-energy storage coupled system under dynamic operating conditions. This method fully integrates the advantages of inertia control and droop control, and adaptively adjusts the control strategy according to the system frequency deviation and the real-time state of charge (SOC) of energy storage. Results Under step disturbance, the proposed strategy reduces the maximum dynamic frequency deviation by 2.8%, the steady-state deviation by 2.9%, and the settling time by 17 s, while the change curve of SOC becomes smooth. Under continuous disturbance, the proposed strategy can reduce the frequency deviation by 8.1% and reduce the output of thermal power units by 52.8%. The SOC of the energy storage system can be maintained within a good range throughout the command period. Conclusions The proposed strategy can improve the frequency regulation performance of the system, reduce unit output fluctuations, and take into account the state of charge management of the energy storage system.

Key words: new energy, flywheel energy storage, droop control, frequency regulation, positive and negative inertia, adaptive switch, state of charge

中图分类号: