储能科学与技术 ›› 2024, Vol. 13 ›› Issue (6): 1911-1920.doi: 10.19799/j.cnki.2095-4239.2024.0039

• 储能系统与工程 • 上一篇    下一篇

计及风电场的飞轮储能一次调频控制策略

金都1,2(), 刘广忱1,2(), 孙博文3, 黄天园3, 张建伟1,2, 田桂珍1,2, 荆丽丽4   

  1. 1.内蒙古工业大学,大规模储能技术教育部工程研究中心
    2.内蒙古工业大学,高等学校智慧能源技术与装备工程研究中心
    3.国网内蒙古东部电力综合能源服务有限公司,内蒙古 呼和浩特 010000
    4.集宁师范学院 ;内蒙古 乌兰察布 012000
  • 收稿日期:2024-01-11 修回日期:2024-01-26 出版日期:2024-06-28 发布日期:2024-06-26
  • 通讯作者: 刘广忱 E-mail:jindongdong1117@163.com;liugc@imut.edu.cn
  • 作者简介:金都(1998—),男,硕士研究生,主要研究方向为新能源发电,E-mail:jindongdong1117@163.com
  • 基金资助:
    内蒙古自治区科技重大专项(2020ZD0014);内蒙古自治区硕士研究生科研创新(S20231149Z)

Primary frequency modulation control strategy for flywheel energy storage counting and wind farms

Du JIN1,2(), Guangchen LIU1,2(), Bowen SUN3, Tianyuan HUANG3, Jianwei ZHANG1,2, Guizhen TIAN1,2, Lili JING4   

  1. 1.Inner Mongolia University of Technology, Engineering Research Center of Large Energy Storage Technology, Ministry of Education
    2.Inner Mongolia University of Technology, Intelligent Energy Technology and Equipment for Universities
    3.State Grid Inner Mongolia East Power Comprehensive Energy Service Co, Huhhot 010000, Inner Mongolia, China
    4.Jining Normal University, Ulanqab 012000, Inner Mongolia, China
  • Received:2024-01-11 Revised:2024-01-26 Online:2024-06-28 Published:2024-06-26
  • Contact: Guangchen LIU E-mail:jindongdong1117@163.com;liugc@imut.edu.cn

摘要:

随着新能源渗透率的提高,电力系统频率稳定性问题愈加严重。本文提出一种改进飞轮储能辅助风电场一次调频的控制策略,分析风储系统的频率特性和容量配置,风电场采用虚拟惯性控制参与一次调频。由于风电场的输出功率根据自然风速随机变化,可能会导致飞轮长期运行至较高或较低转速的状态,在风速骤变时甚至会引起飞轮转速越限。采用虚拟下垂控制结合模糊规则防止飞轮转速越限,从而弥补风电场在一次调频中的功率缺额。通过仿真分析及实验验证阶跃扰动和连续扰动的工况下的频率特性,得出改进控制策略在阶跃扰动和连续负荷扰动2种工况下最大频率偏差更小、响应速度更快的结论。

关键词: 风电场, 一次调频, 飞轮储能, 最大频率偏差, 响应速度

Abstract:

With the increasing integration of new energy sources, the issue of frequency stability in power systems is becoming more severe. This study proposes an improved control strategy for primary frequency regulation of a flywheel energy storage–assisted wind farm. Herein, the frequency characteristics and capacity configuration of a wind-storage system are analyzed. The wind farm adopts virtual inertia control to participate in primary frequency regulation. However, due to random variations in the natural wind speed, the output power of the wind farm may cause flywheels to operate at high or low speeds for prolonged durations. In cases of abrupt changes in the wind speed, the flywheel may even exceed its speed limit. To prevent the overspeeding of the flywheel, virtual droop control is employed along with fuzzy rules to compensate for the power deficit of the wind farm in the primary frequency regulation. Simulation analysis and experimental validation under step and continuous load disturbances show that the improved control strategy exhibits smaller maximum frequency deviation and faster response speed in both disturbance scenarios.

Key words: wind farm, primary frequency regulation, flywheel energy storage, maximum frequency deviation, response speed

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