Fault Ride-Through Study of Wind Turbines

• 作者: Chao Yun Weiqing Wang Xinyan Zhang Xuan Cao
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: WIND Energy FAULT Ride-Through DOUBLY-FED induction GENERATOR WIND FARM
• 年，卷（期）: 2013,（5）
• 页码范围: 25-29
• 页数: 5页
• 分类号: R73

摘要

The installation of wind energy has increased rapidly around the world. The grid codes about the wind energy require wind turbine (WT) has the ability of fault (or low voltage) ride-through (FRT). To study the FRT operation of the wind farms, three methods were discussed. First, the rotor short current of doubly-fed induction generator (DFIG) was limited by introducing a rotor side protection circuit. Second, the voltage of DC bus was limited by a DC energy absorb circuit. Third, STATCOM was used to increase the low level voltages of the wind farm. Simulation under MATLAB was studied and the corresponding results were given and discussed. The methods proposed in this paper can limit the rotor short current and the DC voltage of the DFIG WT to some degree, but the voltage support to the power system during the fault largely depend on the installation place of STATCOM.