| 双馈变速风电机组低电压穿越控制 |
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| 作者姓名： | 魏林君 迟永宁 赵建国 王伟胜 |
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| 作者单位： | 山东大学 电气工程学院;中国电力科学研究院;山东大学 电气工程学院;中国电力科学研究院 |
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| 摘 要： | 当系统中风电装机容量比例较大时，系统故障导致电压跌落后，风电场切除会严重影响系统运行的稳定性，这就要求风电机组具有低电压穿越（Low Voltage Ride Through，LVRT)能力，保证系统发生故障后风电机组不间断并网运行。分析了双馈风电机组LVRT原理和基于转子撬棒保护(crow-bar protection)的LVRT控制策略，在电力系统仿真分析软件DIgSILENT/Power Factory中建立了双馈风电机组模型及其LVRT控制模型，以某地区风电系统为例进行仿真计算，分析转子撬棒投入与
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| 关 键 词： | 双馈风电机组 电压跌落 低电压穿越 转子撬棒保护 |
Control of Low Voltage Ride-Through in Doubly Fed Induction Generators |
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| Authors: | WEI Lin-jun CHI Yong-ning ZHAO Jian-guo and WANG Wei-sheng |
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| Affiliation: | College of Electrical Engineering, Shangdong University;China Electric Power Research Institute;College of Electrical Engineering, Shangdong University;China Electric Power Research Institute |
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| Abstract: | System faults may result in voltage dip due to large proportion wind power in the system. And the system stability is influenced severely when wind farms exit. So the low voltage ride-through (LVRT) characteristic of wind turbines is necessary to keep wind turbine units connected to the grid after system failure. This paper analyzes the principle of LVRT in doubly fed Induction generators (DFIG) and control strategy of LVRT based on rotor crow-bar protection, and builds the DFIG and LVRT model in the software DIgSILENT/PowerFactory. This paper emulates an actual wind power system, and analyzes the influence of rotor crow-bar control strategies on LVRT. |
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