风电机组控制系统稳定性分析
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摘要
风电机组系统的稳定性直接涉及到整机性能、安全及寿命,是机组设计中必须考虑的内容之一。通过GH Bladed软件的模态线性化方法对风电机组进行分段线性化处理,在Matlab/Simulink中搭建风电机组控制算法的非线性仿真模型,然后分别采用阶跃响应、根轨迹、伯德图、Nyquist曲线对比分析开环控制和闭环控制系统的稳定性、闭环控制系统在无扰动和有扰动情况下的稳定性情况,并对某2 MW机组的控制系统进行稳定性分析,分析结果表明,系统是稳定的。对风电机组控制系统进行稳定性分析为风电机组设计如机组的安全性、可靠性、鲁棒性等问题提供一定的理论依据。
The stability of wind turbine is directly related to its overall performance,safety and lifetime,so it must be considered in the plant design.In our experiment,segmented linearization of the wind turbine is conducted by modulus linearization of GH Bladed software,on the basis of which a nonlinear simulation model of wind turbine control system is established in MATLAB/SIMULINK enviroment.Step response,root locus,Bode diagram and Nyquist curve are used in stability analysis of the open-loop controlsystem and closed-loop control system in disturbed and undisturbed enviroments.All analytical results show that the 2 MW control system is stable.It's necessary to analyze the stability for the control system of wind turbine,which can provide a theoretical basis for the design of wind turbine ralating to such issues as security,reliability and robustness.
The stability of wind turbine is directly related to its overall performance,safety and lifetime,so it must be considered in the plant design.In our experiment,segmented linearization of the wind turbine is conducted by modulus linearization of GH Bladed software,on the basis of which a nonlinear simulation model of wind turbine control system is established in MATLAB/SIMULINK enviroment.Step response,root locus,Bode diagram and Nyquist curve are used in stability analysis of the open-loop controlsystem and closed-loop control system in disturbed and undisturbed enviroments.All analytical results show that the 2 MW control system is stable.It's necessary to analyze the stability for the control system of wind turbine,which can provide a theoretical basis for the design of wind turbine ralating to such issues as security,reliability and robustness.
引文
[1]郑刚.风电场有功功率控制系统关键技术研究[D].成都:电子科技大学,2011.ZHENG Gang.Research on key technology of wind farm active power control system[D].Chengdu:University of Electronic Science and Technology,2001.(in Chinese)
[2]Chen W,George W.Stability analysis of the drive-train of a wind turbine with quadratic torque control[J].International Journal of Robust and Nonlinear Control,2009,19(17):1886-1895.
[3]Dushyant P,John H,Christine M,et al.Stability of wind turbine switching control in an integrated wind turbine and rechargeable battery system:a common quadratic lyapunov function approach[J].Journal of Dynamic Systems,Measurement,and Control,2013,135(2):1-27.
[4]John L,Carlos E U,Janaka E,et al.Damping of torsional vibrations in a variable-speed wind turbine[J].IEEE Transactions on Energy Conversion,2013,28(1):172-180.
[5]Buckspan A,Pao L,Aho J.Stability analysis of a wind turbine active power control system[C]∥American Control Conference(ACC),June 17-19,2013,Washington,DC,USA:IEEE,2013:1418-1423.
[6]Garrad Hassan&Parthers Ltd..Bladed Theory Manual[Z],Bladed,2011.
[7]胡寿松.自动控制原理[M].北京:科学出版社,2001.HU Shousong.Principle of automatic control[M].Beijing:Science Press,2001.(in Chinese)
[8]薛定宇.控制系统计算机辅助设计[M].北京:清华大学出版社,2006.XUE Dingyu.Computer aided design of control system[M].Beijing:Tsinghua University Press,2006.(in Chinese)
[2]Chen W,George W.Stability analysis of the drive-train of a wind turbine with quadratic torque control[J].International Journal of Robust and Nonlinear Control,2009,19(17):1886-1895.
[3]Dushyant P,John H,Christine M,et al.Stability of wind turbine switching control in an integrated wind turbine and rechargeable battery system:a common quadratic lyapunov function approach[J].Journal of Dynamic Systems,Measurement,and Control,2013,135(2):1-27.
[4]John L,Carlos E U,Janaka E,et al.Damping of torsional vibrations in a variable-speed wind turbine[J].IEEE Transactions on Energy Conversion,2013,28(1):172-180.
[5]Buckspan A,Pao L,Aho J.Stability analysis of a wind turbine active power control system[C]∥American Control Conference(ACC),June 17-19,2013,Washington,DC,USA:IEEE,2013:1418-1423.
[6]Garrad Hassan&Parthers Ltd..Bladed Theory Manual[Z],Bladed,2011.
[7]胡寿松.自动控制原理[M].北京:科学出版社,2001.HU Shousong.Principle of automatic control[M].Beijing:Science Press,2001.(in Chinese)
[8]薛定宇.控制系统计算机辅助设计[M].北京:清华大学出版社,2006.XUE Dingyu.Computer aided design of control system[M].Beijing:Tsinghua University Press,2006.(in Chinese)