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  

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

作　　者：汪康康 孙昕炜 周波 郑天文 魏巍 蒋力波 WANG Kangkang;SUN Xinwei;ZHOU Bo;ZHENG Tianwen;WEI Wei;JIANG Libo(State Grid Sichuan Electric Power Research Institute,Chengdu 610047,China;Sichuan Energy Internet Research Institute,Tsinghua University,Chengdu 610213,China)

机构地区：[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

出　　处：《中国电力》2023年第10期115-123,共9页Electric Power

基　　金：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)。

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。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 lowfrequency 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.

关 键 词：压缩空气储能 低频振荡 附加阻尼 调节阀 质量流量 

分 类 号：TM712[电气工程—电力系统及自动化]