华电技术 ›› 2010, Vol. 32 ›› Issue (5): 47-50.

• 技术交流 • 上一篇    下一篇

线路故障重合时对变压器差动保护的影响分析

彭鹏1,梁卫1,殷琮2,卢志刚3   

  1. 1.华电贵州乌江渡发电厂,贵州遵义563104;2.贵州电力调度通信局,贵州贵阳550002;3.贵州大学 电气工程学院,贵州贵阳550025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-05-25

Influence of line fault reclosing on transformer differential protection

PENG Peng1, LIANG Wei1, YIN Cong2, LU Zhigang3   

  1. 1.Huadian Guizhou Wujiangdu Power Plant, Zunyi 563104, China; 2.Guizhou Electric Power Dispatch and Communication Bureau, Guiyang 550002, China; 3.Electric Engineering School of Guizhou University, Guiyang 550025, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2010-05-25

摘要: 乌江渡发电厂 #0变压器发生近区故障,故障切除后线路保护再次重合到故障点,对变压器差动保护动作的原因进行了分析,得出了在特定合闸时刻,变压器差动保护在近区故障时存在动作的可能性的结论,提出了相应的解决措施。

关键词: 重合闸, 变压器差动, 动作

Abstract: The shortline fault was occurred in transformer No.0 of Wujiangdu Power Plant. After the fault was cleared, the line protection was reclosed into the fault point. The reason, which caused the transformer differential protection to act, was analyzed. The analysis shows that in certain reclose time, when the shortline fault occurred, the transformer differential protection could act in certain probability. The relevant solving measures were put forward.

Key words: reclose, transformer differential protection, act