摘要
随着电网中风电机组容量的增加,为确保电网故障时风电机组的不脱网运行,电力系统出台了低电压穿越规范。对各国低电压穿越规程进行了介绍,分析了与目前主流风电机型双馈风力发电机相关的低电压穿越热点问题,具体包括电网故障对风电机组的影响和低电压穿越控制方案两个方面。对低电压穿越技术的未来发展发展趋势做出了展望。
With increasing wind power unit capacity in the power grid, low-voltage ride-through （ LVRT ） codes are introduced by the electric power operators to keep wind power units connected to the grid during its faults. This paper introduces LVRT codes in different countries, and analyzes LVRT hotspots related to doubly-fed wind power unit - the main current wind generator type, including specifically two aspects, namely, impact on the wind power unit during grid faults and LVRT control scheme. It also gives a perspective on the future development trend of LVRT.
出处
《电气自动化》
2015年第5期35-39,共5页
Electrical Automation
基金
国家自然科学基金面上项目(61374155)
关键词
双馈风力发电机
低电压穿越
不对称故障
无功补偿
CROWBAR电路
doubly-fed wind power generator
low-voltage ride through
asymmetric fault
reactive compensation
Crowbar circuit
