双馈型风力发电机组低电压穿越技术改进方法研究  

Low Voltage Ride Through Technology Improvement Method Research of DFIG

作　　者：刘慧敏[1] 王桂英[1] 董鹤楠[2] 

机构地区：[1]沈阳农业大学信息与电气工程学院,沈阳110161 [2]沈阳工业大学风能技术研究所,沈阳110023

出　　处：《沈阳农业大学学报》2013年第3期377-380,共4页Journal of Shenyang Agricultural University

摘　　要：随着风力发电机组装机容量的急剧增加,对电网稳定性的影响越来越大,为了提高风电接入电网的电能质量,确保电力系统的安全稳定运行,要求风力发电机组必须具备低电压穿越(LVRT)功能。针对内蒙古某风电场双馈型风力发电机组低电压穿越改造实例,对基于Crowbar保护电路的低电压穿越技术进行分析,并通过中国电力科学研究院低电压穿越测试验证该技术改造方法的有效性。结果表明:不具备低电压穿越功能的双馈风力发电机组,采用Crowbar控制电路的方法是可行的,并能够满足当前国家电网对风力发电机组接入电网低电压穿越的要求。As the installed capacity of wind power keeps increasing, the influence of the power system raises gradually. In order to improve the access of wind power grid power quality and ensure the safe and reliable operation of the power system, the wind power generators must have low voltage ride-through （LVRT） function. An example of DFIG for LVRT transformation was analy zied in InnerMongolia~ wind farm, which pass the test of China^s electricity science institute to prove the effectiveness of the method. Results showed that the doubly-fed wind power generators use the Crowbar protection without LVRT function is feasible, and can meet the current national power grid for wind generators connected to the electricity grid low voltage through the request.

关 键 词：双馈风力发电机组 低电压穿越 Crowbar保护电路 

分 类 号：TM614[电气工程—电力系统及自动化]