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Design of additional SSR damping controller for power system with DFIG wind turbine
Author(s): 
Pages: 36-43
Year: Issue:  6
Journal: Electric Power Automation Equipment

Keyword:  DFIG wind turbinewind powerelectric power systemsseries compensationsubsynchronous resonanceimpedance-based analysisdamping;
Abstract: 为抑制双馈异步风机经串联补偿线路并网导致的次同步谐振(SSR),基于阻抗分析的奈奎斯特稳定判据设计了相应的次同步谐振阻尼控制器(SSRDC).该附加控制器以风机转速偏差作为反馈输入信号引入转子变流器控制的内环中,采用典型的超前-滞后校正模型.以附加SSRDC引入系统后带来好的稳定效果为目的建立优化模型,并且调用粒子群优化算法求解该优化模型,得到该控制器参数.MATLAB/Simulink下的仿真结果表明附加SSRDC能够有效地抑制SSR,并且在转子侧引入附加SSRDC抑制SSR的效果明显比在定子侧引入SSRDC好,同时验证了基于阻抗法设计的附加SSRDC抑制SSR的效果比基于状态空间法设计的SSRDC更好.
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