Improving low voltage ride-through with STATCOM and SDBR for wind turbine with squirrel-cage induction generator

被引：0
作者：
Liu L. [1 ,2 ]
Wang S. [2 ]
机构：
[1] College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot
[2] College of Electric Power, Inner Mongolia University of Technology, Hohhot
来源：
European Journal of Electrical Engineering | 2019年 / 21卷 / 02期
关键词：
Low voltage ride-through; Series dynamic breaking resistor; Squirrel-cage induction generator; STATCOM;
D O I：
10.18280/ejee.210208
中图分类号：
学科分类号：
摘要：
Wind turbine with squirrel-cage induction generators is confronted with major problem for power quality and fail-safe operation at grid fault. State-of-art technique used to meet low voltage ride-through (LVRT) requirements is dynamic reactive power compensation. Meanwhile, breaking resistor and energy storage system is also helpful to LVRT performance. However, these approaches have their own limitations. A hybrid of STATCOM and series dynamic breaking resistor (SDBR) to improve LVRT performance is proposed in this paper. The positive- and negative-sequence independent control is used for STATCOM control to mitigate the voltage fluctuation, while the hysteretic control is adopted for SDBR in order to control bypass switch. A new analytical approach is proposed to quantify the STATCOM rating and SDBR resistance. Simulation results by MATLAB showed that the novel method not only significantly reduces the voltage fluctuations, but also enhances LVRT performance. © 2019 International Information and Engineering Technology Association. All rights reserved.
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页码：179 / 187
页数：8
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