主变本体保护误动分析及防范措施

Analysis of main transformer protection maloperation and its countermeasure

对湖南省几起大型主变本体保护误动事故进行了简要分析,并针对误动事故暴露的问题提出防范措施。这些防范措施已作为湖南省在本体保护方面的反事故措施,大大减少了由各类非正常原因造成的本体保护跳闸事故。

Main transformer protection often had false action in practical operation. In this article, several fault action aecidents of main transformer protection in Hunan were briefly analyzed and countermeasures were suggested. These eountermeasures are adopted as anti-countermeasura in Hunan main transformer protection, greatly reducing tripping accidents.