含DFIG风机的电力系统次同步谐振附加阻尼控制器设计  

Design of additional SSR damping controller for power system with DFIG wind turbine

作　　者：张宋彬 江全元[1] 陈跃辉[2] 张文磊[2] 宋军英[2] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]湖南省电力公司,湖南长沙410007

出　　处：《电力自动化设备》2014年第6期36-43,共8页Electric Power Automation Equipment

基　　金：国家重点基础研究发展计划(973计划)项目(2012CB215106);国家高技术研究发展计划(863计划)项目(2011AA05A113)~~

摘　　要：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。In order to suppress the SSR（SubSynchronous Resonance） caused by the grid connection of DFIG（Doubly Fed Induction Generator） wind turbine via series compensated network,an additional SSR damping controller with the impedance-based Nyquist stability criterion is designed,which takes the wind deviation as the input signal of the inner control loop of rotor converter and applies typical lead-lag correction model. In order to achieve better system stability,an optimization model is established and solved by calling particle swarm optimization algorithm. The results of simulation with MATLAB / Simulink show that,the additional SSR damping controller suppresses the SSR effectively,its effect at rotor side is better than that at stator side,and the effect of impedance-based SSR damping controller is better than that of state-space-based one.

关 键 词：双馈异步风机 风电 电力系统 串联补偿 次同步谐振 阻抗分析法 阻尼 

分 类 号：TM614[电气工程—电力系统及自动化] TM76