中国电力 ›› 2023, Vol. 56 ›› Issue (10): 115-123.DOI: 10.11930/j.issn.1004-9649.202302081

• 电网 • 上一篇    下一篇

基于压缩空气储能附加阻尼控制的电力系统低频振荡抑制策略

汪康康1(), 孙昕炜1(), 周波1(), 郑天文2(), 魏巍1(), 蒋力波2()   

  1. 1. 国网四川省电力公司电力科学研究院,四川 成都 610047
    2. 清华四川能源互联网研究院,四川 成都 610213
  • 收稿日期:2023-02-21 接受日期:2023-07-25 出版日期:2023-10-28 发布日期:2023-10-31
  • 作者简介:汪康康(1974—),男,硕士,高级工程师,从事电网规划及运行相关工作,E-mail: 647819822@qq.com
    孙昕炜(1991—),男,硕士,高级工程师,从事电力系统稳定与控制技术研究,E-mail: sunxw09@126.com
    周波(1989—),男,硕士,高级工程师,从事电力系统稳定与控制技术研究,E-mail: zbv_s@126.com
    郑天文(1987—),男,通信作者,博士,正高级工程师,从事压缩空气储能技术与应用研究,E-mail: tianwenscu@163.com
    魏巍(1984—),男,博士,正高级工程师,从事电力系统稳定与控制技术研究,E-mail: 769326807@qq.com
    蒋力波(1993—),男,硕士,工程师,从事压缩空气储能运行与控制研究,E-mail: jliboc3@163.com
  • 基金资助:
    国家自然科学基金资助项目(52007100);国网四川省电力公司科技项目(B1199721009N)

Low-Frequency Oscillation Suppression Strategy for Power System Based on Supplementary Damping Control of Compressed Air Energy Storage

Kangkang WANG1(), Xinwei SUN1(), Bo ZHOU1(), Tianwen ZHENG2(), Wei WEI1(), Libo JIANG2()   

  1. 1. State Grid Sichuan Electric Power Research Institute, Chengdu 610047, China
    2. Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China
  • Received:2023-02-21 Accepted:2023-07-25 Online:2023-10-28 Published:2023-10-31
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (No.52007100) and the Science and Technology Project of State Grid Sichuan Electric Power Company (No.B1199721009N).

摘要:

随着电力系统中电力电子设备的渗透率大幅提升,在扰动下系统发生低频振荡失稳问题日益凸显。为此,结合压缩空气储能良好的有功调节能力,提出了抑制电网低频振荡的压缩空气储能附加阻尼控制方法。首先,建立了压缩空气储能的数学模型,分析了质量流量对其输出功率的影响。其次,分析压缩空气储能抑制低频振荡的可行性,提出了基于调节阀的附加阻尼控制器,调整质量流量,进而控制压缩空气储能的输出功率,抑制电网的低频振荡。最后,搭建含压缩空气储能的4机2区域电力系统仿真模型,验证所提方法的有效性。仿真结果显示所提方法能够为电网提供正阻尼,可较快抑制电网的低频振荡,有效提高电力系统的稳定性。

关键词: 压缩空气储能, 低频振荡, 附加阻尼, 调节阀, 质量流量

Abstract:

With significant increase of penetration of electronic equipment in the power system, the low-frequency oscillation problem of the power system under disturbance are becoming increasingly prominent. Therefore, combined with the good active power regulating ability of compressed air energy storage, a low-frequency oscillation suppression strategy is proposed based on the supplementary damping control of compressed air energy storage. Firstly, a mathematical model of compressed air energy storage is established, and the influence of the mass flow on its output power is analyzed. Secondly, the feasibility of compressed air energy storage to suppress low-frequency oscillation is analyzed, and a supplementary damping controller based on regulating valve is proposed to adjust the mass flow. And then, the output power of the compressed air energy storage is controlled to suppress the low-frequency oscillation of the power grid. Finally, a power system simulation model of 4-generator and two-area with compressed air energy storage is established to verify the effectiveness and feasibility of the proposed method. The simulation results show that the proposed method can provide positive damping for the power grid, and can rapidly suppress the low-frequency oscillation of the power grid and effectively improve the stability of the power system.

Key words: compressed air energy storage, low-frequency oscillation, supplementary damping, regulating valve, mass flow