双馈风机附加次同步阻尼控制器抑制方法分析与优化设计  

Mitigation method analysis and optimization design of doubly-fed induction generator additional subsynchronous damping controller

作　　者：王杨 杨汉芦 肖先勇[1] 周波 石鹏 王海风 WANG Yang;YANG Hanlu;XIAO Xianyong;ZHOU Bo;SHI Peng;WANG Haifeng(College of Electrical Engineering,Sichuan University,Chengdu 610065,China;State Grid Sichuan Electric Power Research Institute,Chengdu 610094,China)

机构地区：[1]四川大学电气工程学院,四川成都610065 [2]国网四川省电力公司电力科学研究院,四川成都610094

出　　处：《电力自动化设备》2022年第8期184-190,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51907133);国网四川省电力公司科技项目(52199720002S)。

摘　　要：次同步阻尼控制器(SSDC)抑制次同步振荡(SSO)因具有良好的抑制效果和低廉的成本而得到广泛的认可,但是现有SSDC种类众多,缺乏系统性比较。为此梳理了常见的SSDC结构及其参数设计方法,在对动态性能、鲁棒性等指标的对比中发现转子电流反馈型SSDC具有最佳的抑制效果。进一步深入研究了该SSDC参数对SSO抑制性能的影响,从而优化了参数设计,并提出基于固有时间尺度分解算法的自适应振荡频率选取方法,实现SSDC的SSO精准抑制。对附加改进后SSDC系统进行根轨迹分析和硬件在环实验,结果表明,通过增加自适应振荡频率选取环节和优化设计参数,改进的SSDC具有更优的SSO抑制效果,且不会影响双馈风机的正常运行。SSDC(SubSynchronous Damping Controller)has been widely recognized for its excellent mitigation performance and low cost in SSO(SubSynchronous Oscillation)mitigation,however,the existing SSDCs are numerous and lack of systematic comparison.Therefore,the common SSDCs’structures and parameter design methods are sorted and compared,as a result,the rotor current feedback type SSDC has the best mitigation effect on dynamic performance and robustness.Furthermore,the influence of SSDC parameters on SSO mitigation performance is researched,and the design of parameters is optimized.In addition,the adaptive oscillation frequency selection method based on intrinsic time-scale decomposition algorithm is proposed to achieve accurate SSO mitigation.Root locus of the additional improved SSDC system is analyzed and the hardwarein-the-loop experiment is conducted.The result show that the improved SSDC has better mitigation effect on SSO by adding adaptive oscillation frequency selection part and optimizing design parameters,and will not affect the normal operation of doubly-fed induction generator.

关 键 词：次同步振荡 次同步阻尼控制器 次同步振荡抑制 双馈风机 参数辨识 

分 类 号：TM712[电气工程—电力系统及自动化] TM614