| 双馈风力发电系统在电网三相短路故障下的响应与保护 |
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| 引用本文： | 郭家虎,张鲁华,蔡旭. 双馈风力发电系统在电网三相短路故障下的响应与保护[J]. 电力系统保护与控制, 2010, 38(6): 40-44,48 |
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| 作者姓名： | 郭家虎 张鲁华 蔡旭 |
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| 作者单位： | 1.安徽理工大学电气与信息工程学院，安徽 淮南 232001；2.上海交通大学风力发电研究中心，上海 200240 |
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| 基金项目： | 安徽高校省级自然科学研究项目（KJ2007B006）；上海市科委项目(08DZ1200504) |
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| 摘 要： | 为了研究双馈感应风力发电机组的低电压穿越以及故障保护技术，根据双馈风力发电系统的数学模型采用数学解析的方法详细地分析了双馈感应发电机和变换器在三相电网短路故障时的动态响应特性；推导出了三相电网短路故障时双馈发电机的故障电流最大值及其发生时刻；并在此基础上，研究了双馈风力发电机的转子保护电路的具体设计方法及计算依据。
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| 关 键 词： | 风力发电；双馈发电机；三相短路；低压穿越；转子保护 |
Response and protection of DFIG system under three-phase short circuit fault of grid |
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| GUO Jia-hu,,ZHANG Lu-hua,CAI Xu. Response and protection of DFIG system under three-phase short circuit fault of grid[J]. Power System Protection and Control, 2010, 38(6): 40-44,48 |
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| Authors: | GUO Jia-hu ZHANG Lu-hua CAI Xu |
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| Affiliation: | 1.Anhui University of Science and Technology;Huainan 232001;China;2.Shanghai Jiao Tong University;Shanghai 200240;China |
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| Abstract: | To research the technology of grid fault ride-through and protection of doubly-fed induction generator(DFIG),the responses of DFIG and converter in the case of grid fault are analyzed in detail.First,the simple space vector models are presented to estimate the moduli of DFIG stator voltage under grid fault.Then,the response of DFIG and converter in grid fault is developed in detail,and the maximum value of the short-current of DFIG is determined.At last,the method on crowbar design is proposed. |
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| Keywords: | wind power DFIG three-phase short circuit low voltage ride through rotor protection |
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