蒋雪冬;赵舫;

• 1:浙江大学电气工程学院

摘要(Abstract)：

双馈感应发电机(doubly fed induction generator,DFIG)具有有功、无功功率独立调节的能力及励磁变频器所需容量小等优点,在风力发电系统中得到了广泛应用,但由于励磁变频器的容量较小,使其在电网故障下的控制能力受到限制。为保护励磁变频器,需要采用Crowbar装置在电压骤降时为转子浪涌电流提供通路,并限制转子电流增大。文章提出了一种Crowbar控制策略,能有效抑制转子过电流、直流母线过电压以及电磁转矩的振荡,并可向电网注入无功电流以帮助电网电压的恢复。仿真结果验证了这种控制方式能使DFIG在大幅电压骤降故障下实现不间断运行,有效提高了DFIG风电机组运行的可靠性。

关键词(KeyWords)： 变速恒频;双馈感应发电机;电压骤降;Crowbar电路;不间断运行

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 蒋雪冬;赵舫;

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DOI:

参考文献(References)：

• [1]刘其辉,贺益康,卞松江.变速恒频风力发电机空载并网控制[J].中国电机工程学报,2004,24(3):6-11.Liu Qihui,He Yikang,Bian Songjiang.Study on the no-load cutting-in control of the variable-speed constant-frequency wind power generation system[J].Proceedings of the CSEE,2004,24(3):6-11(in Chinese).
• [2]刘其辉,贺益康,张建华.交流励磁变速恒频风力发电机的运行控制及建模仿真[J].中国电机工程学报,2006,26(5):43-50.Liu Qihui,He Yikang,Zhang Jianhua.Operation control and modeling-simulation of AC-excited variable-speed constant-frequency(AEVSCF)wind power generator[J].Proceedings of the CSEE,2006,26(5):43-50(in Chinese).
• [3]林成武,王凤翔,姚兴佳.变速恒频双馈风力发电机励磁控制技术研究[J].中国电机工程学报,2003,23(11):122-125.Lin Chengwu,Wang Fengxiang,Yao Xingjia.Study on excitation control of VSCF doubly fed wind power generator[J].Proceedings of the CSEE,2003,23(11):122-125(in Chinese).
• [4]李晶,方勇,宋家骅,等.变速恒频双馈风电机组分段分层控制策略的研究[J].电网技术,2005,29(9):15-21.Li Jing,Fang Yong,Song Jiahua,et al.Research on subsection and layer control strategy of doubly-fed variable speed wind turbine[J].Power System Technology,2005,29(9):15-21(in Chinese).
• [5]李晶,王伟胜,宋家骅.变速恒频风力发电机组建模与仿真[J].电网技术,2003,27(9):14-17.Li Jing,Wang Weisheng,Song Jiahua.Modeling and dynamic simulation of variable speed wind turbine[J].Power System Technology,2003,27(9):14-17(in Chinese).
• [6]Rodriguez M,Abad G,Sarasola I,et al.Crowbar control algorithms for doubly fed induction generator during voltage dips[C].European Conference on Power Electronics and Applications,Spain,2005.
• [7]李建林,赵栋利,李亚西,等.适合于变速恒频双馈感应发电机的Crowbar对比分析[J].可再生能源,2006,(5):57-60.Li Jianlin,Zhao Dongli,Li Yaxi,et al.Analyze of crowbar circuit forvariable speed constant frequency doubly fed induction generator[J].Renewable Energy,2006,(5):57-60(in Chinese).
• [8]Seman S,Niiranen J,Kanerva S,et al.Analysis of a1.7MVA doubly fed wind-power induction generator during power systems disturbances[C].Proceedings of NORPIE,Trondheim,Norway,2004.
• [9]Niiranen J.Voltage dip ride through of doubly-fed generator equipped with active crowbar[C].The Nordic Wind Power Conference,G?teborg,Sweden,2004.
• [10]李建林,许鸿雁,梁亮,等.VSCF-DFIG在电压瞬间跌落情况下的应对策略[J].电力系统自动化,2006,30(19):65-68.Li Jianlin,Xu Hongyan,Liang Liang,et al.Strategy to cope with the VSCF-DFIG during voltage dip[J].Automation of Electric Power Systems,2006,30(19):65-68(in Chinese).
• [11]Petersson A,Lundberg S,Thiringer T.A DFIG wind turbine ride-through system.Influence on the energy production[J].Wind Energy,2005,(8):251-263.
• [12]Morren J,de Haan S W H.Ride through of wind turbines with doubly-fed induction generator during a voltage dip[J].IEEE Trans on Energy Conversion,2005,20(2):435-441.
• [13]Sun T,Chen Z,Blaabjerg F.Voltage recovery of grid-connected wind turbines with DFIG after a short-circuit fault[C].IEEE35th Annual Power Electronics Specialists Conference,China,2004,3(3):1991-1997.
• [14]Xiang Dawei,Ran Li,Tavner P J,et al.Control of a doubly fed induction generator in a wind turbine during grid fault ride-through[J].IEEE Trans on Energy Conversion,2006,21(3):652-662.
• [15]向大为,杨顺昌,冉立.电网对称故障时双馈感应发电机不脱网运行的励磁控制策略[J].中国电机工程学报,2006,26(3):164-170.Xiang Dawei,Yang Shunchang,Ran Li.Ride through control strategy of a doubly fed induction generator for symmetrical grid fault[J].Proceedings of the CSEE,2006,26(3):164-170(in Chinese).
• [16]Hansen A D,Michalke G,S?rensen P,et al.Coordinated voltage control of DFIG wind turbines in uninterrupted operation during grid faults[J].Wind Energy,2007,(10):51-68.
• [17]Sun T,Chen Z,Blaabjerg F.Transient analysis of grid-connected wind-turbines with DFIG after an external short-circuit fault[C].Proceedings of NWPC,Sweden,2004.
• [18]Dittrich A,Stoev A.Grid voltage fault proof doubly-fed induction generator system[C].Proceedings of10th European Conference on Power Electronics and Applications,Toulouse,2003.
• [19]He Yikang,Hu Jiabing,Zhao Rende.Modeling and control of wind-turbine used DFIG under network fault conditions[C].Proceedings of the Eighth International Conference on Electrical Machines and Systems,2005,2:986-991.
• [20]Ireland National Grid.Wind farm power station grid code provisions(2004)[EB/OL].http://eirgrid.com/EirGridPortal/uploads/Regulation and Pricing/WFPS1.pdf.
• [21]Dragan Jovcic.Phase locked loop system for FACTS[J].IEEE Trans on Power Systems,2003,18(3):1116-1122.