双馈风机并网系统次同步振荡抑制研究  

Study of Sub-synchronous Oscillation Suppression in Doubly-fed Grid-connected System

作　　者：姜健萍 施建强 徐梦溪 JIANG Jianping;SHI Jianqiang;XU Mengxi(School of Energy and Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院能源与动力工程学院,江苏南京211167

出　　处：《电工技术》2025年第4期53-57,共5页Electric Engineering

基　　金：江苏省自然科学基金资助项目(编号BK20221399)。

摘　　要：双馈感应发电机(Doubly-Fed Induction Generator,DFIG)次同步控制交互事故会引发系统次同步振荡(Sub-Synchronous Oscillation,SSO),严重威胁到风电系统的安全可靠运行。为了解决此问题,首先对双馈风机建模,其次分析发生次同步振荡的原因,提出一种阻尼控制和并联电容器组联合作用的控制策略,抵消负阻尼部分,降低输电线路上的串补度。在MATLAB/Simulink中进行仿真,对所提策略的有效性进行验证。Over the past decade,many sub-synchronous control interaction accidents of doubly-fed induction generator(DFIG)have been reported,causing sub-synchronous oscillation(SSO)of the system,which poses a serious threat to the safe and reliable operation of wind power system.In order to solve the above problems,firstly,the doubly-fed wind turbine is modelled,secondly,the reasons for the occurrence of sub-synchronous oscillations are analysed,and a control strategy with the combined effect of damping control and shunt capacitor bank is proposed to offset the negative damping part,and at the same time,the shunt capacitor bank is equivalent to reduce the series complement of the transmission line,and finally,the simulation is carried out in MATLAB/Simulink to verify the effectiveness of the proposed strategy.

关 键 词：双馈风机 次同步振荡 阻尼控制 并联电容器组 

分 类 号：TM614[电气工程—电力系统及自动化]