| 不同电网故障情况下DFIG运行特性比较 |
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| 引用本文： | 李梅,李建林,赵斌,许洪华.不同电网故障情况下DFIG运行特性比较[J].高电压技术,2008,34(4):777-782. |
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| 作者姓名： | 李梅 李建林 赵斌 许洪华 |
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| 作者单位： | 1. 中国科学院电工研究所,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院电工研究所,北京,100190 |
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| 摘 要： | 现代风力发电的发展,对风电生产提出了新的需求,即在电网电压跌落处于一定范围内时风力发电机装置必须保持和电网相连,其中双馈式风力发电机(DFIG)的电压跌落渡过能力是目前风电研究的一个热点。为确保DFIG的低压过渡能力,通过仿真1.5 MW的双馈风力发电机,研究了对称电网电压跌落时,DFIG的定转子的电压电流、电磁转矩、转速、直流侧电压、有功、无功等量的动态响应情况;比较了不同电网电压跌落情况下,各动态响应的剧烈程度;分析了响应产生的原因并介绍了几种可行的双馈风力发电机电压跌落渡过策略。仿真结果说明DFIG在电网电压跌落对称故障下的动态响应由电网电压跌落的程度及系统控制结构决定。
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| 关 键 词： | 风力发电 变速恒频 双馈感应发电机 电压跌落 故障渡过 动态响应比较 |
| 文章编号： | 1003-6520(2008)04-0777-06 |
| 修稿时间： | 2007年4月3日 |
Comparison of Response of Wind Turbine with DFIG During Different Grid Voltage Dips |
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| LI Mei,LI Jian-lin,ZHAO Bin,XU Hong-hua.Comparison of Response of Wind Turbine with DFIG During Different Grid Voltage Dips[J].High Voltage Engineering,2008,34(4):777-782. |
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| Authors: | LI Mei LI Jian-lin ZHAO Bin XU Hong-hua |
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| Affiliation: | 1(1.Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;2.Graduate university of Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | To meet the requirements of modern wind energy generation the turbines should stay connected to the grid in case of a failure,a 1.5MW doubly-fed induction generators(DFIG) model is presented and simulated under the Matlab/Simulink software.Transient response of DFIG is given including stator and rotor current and voltage,electromagnetic torque,rotor speed,DC link voltage,active and reactive output power both during the grid voltage dip and after the clearance of the fault.The response of DFIG under three different voltage dip conditions is compared,the reason of the response is also analyzed based on the simulation results.Some methods for DFIG system protection and some practical solutions for low voltage riding through are introduced. |
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| Keywords: | wind energy generation variable speed constant frequency(VSCF) doubly-fed induction generator(DFIG) voltage dip fault ride-through dynamic response contrast |
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