摘要
2004年4月10日16时20分,某厂2号机启动1号循环泵。17时02分,因循环泵电动机内部短路导致差动保护动作跳闸,同时引发厂用降压变A重瓦斯保护动作跳开主变高压侧开关,厂用电系统自动切换至备用变供电。本文主要针对重瓦斯保护动作的根本原因进行分析。
On April 10, 2004, the NO. 2 circulating - pump in a power plant triped initiated by action of differential protection after fonrty - two minutes running. The reason is that the pump＇s electromotor has internal short circuit. At the same time, the circuit breaker of HT side of the main transformer trips caused by action of auxiliary negative booster transformer＇s heavy gas protection. The station power transfers form service system to standby power supply. This article analyses the essential causes of the heavy gas protection＇s action.
出处
《安徽电气工程职业技术学院学报》
2006年第3期33-35,共3页
Journal of Anhui Electrical Engineering Professional Technique College
关键词
重瓦斯
继电器
变压器
定值
heavy gas protection
relay
transformer
reference
