西安理工大学学报2012，Vol.28Issue(2)：225-229,5.
风电场并网联络线的自适应电流保护研究
Research on Adaptive Current Protection for Wind Farm Tie-Line
摘要
Abstract
With an aim at the existing tie-line resource side with fixed value protection schemes, resulting in mal-operating situation because of being subject to the wind power characteristics, this paper analyzes the short circuit, current behavior of the wind power generators, whereby such conclusions are obtained as defect types, crowbar circuit action, and fault-induced voltage sag level which are closely related to the occurrences of fault current of double-fed induction generator and the power grid fault, on the basis of which the new relay adaptive protection principle and algorithm for comprehensive electric current and voltage information for the tie-line in the wind farm are suggested. Finally, this protection scheme is tested on a certain exemplary distributed wind farm by the DIgSILENT simulation software. The test results show that the proposed protection scheme is adaptive and able to distinguish the internal or external faults effectively.关键词
风电场/联络线/自适应保护/双馈风力发电机Key words
wind farm/ tie-line/ adaptive protection/ DFIG分类
信息技术与安全科学引用本文复制引用
雷显国,段建东..风电场并网联络线的自适应电流保护研究[J].西安理工大学学报,2012,28(2):225-229,5.基金项目
国家自然科学基金资助项目(50707026) （50707026）
陕西省重点学科建设专项基金资助项目(00x901) （00x901）
陕西省教育厅专项科研计划基金资助项目(2010JK747). （2010JK747）
