制动电阻对变速双馈风电机组故障穿越能力的影响研究  

Study on Effect of Brake Resistance on Fault Ride-through Capability of Doubly-fed Induction Generator

作　　者：赵海岭[1] 黄伟[2] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047 [2]新疆独山子石化公司乙烯电气部,新疆独山子833600

出　　处：《四川电力技术》2011年第3期1-4,共4页Sichuan Electric Power Technology

基　　金：国家自然科学基金资助项目(50867004)

摘　　要：为保持系统稳定,必须要求风电机组具有故障穿越能力。双馈风电机组故障穿越能力已成为研究热点。介绍了故障穿越标准,分析了双馈风电机组暂态特性与制动电阻的工作原理,详细分析电网电压跌落情况下,制动电阻接在风电场升压变压器低压侧与接在风电机组机端对双馈风机故障穿越能力影响。试验结果表明:故障期间投入制动电阻,能有效提升双馈风电场故障穿越能力。In order to improve the stability of power system,the capability of fault ride-through（FRT） is required for the large wind farms.The research on fault ride-through of doubly-fed induction generator（DFIG） has become a hot issue.The standards of fault ride-through are introduced,and then the transient characteristics of doubly-fed induction generator and the working principle of brake resistance are analyzed.The effects of brake resistance placed at the low side of the transformer of wind farm or the terminal of DFIG on fault ride-through of doubly-fed induction generators are analyzed in detail when there is a voltage dip in grid side.The test results show that the brake resistance can substantially improve the performance of low voltage ride-through（LVRT） of a DFIG wind farm when placing it at the low side of transformer of the wind farm.

关 键 词：风力发电 故障穿越 制动电阻 变速双馈风电机(DFIG) 

分 类 号：TM732[电气工程—电力系统及自动化]