宁安330 kV变电站1号主变跳闸原因分析及处理  

Cause Analysis and Solution to the Tripping of No.1 Main Transformer at 330 kV Ning'an Substation

作　　者：蒋超伟[1] 

机构地区：[1]国网宁夏电力公司,宁夏银川750011

出　　处：《电网与清洁能源》2013年第11期44-48,共5页Power System and Clean Energy

摘　　要：对宁夏电网宁安330 kV变电站1号主变压器故障情况进行了简要叙述,结合现场设备具体情况查明,主变低压侧301断路器电流互感器一次绝缘被击穿是造成主变差动保护动作跳闸的直接原因,及时采取了针对性处理措施,缩短了主变停电时间,通过分析对比提出了反事故防范措施及对策,确保电网安全稳定运行。This paper briefly describes the fault occurred on No.! main transformer of Ning＇an 330 kV substation in Ningxia Grid, and based on the practical situation of the equipment, it is found that the tripping of the main transformer differential protection is directly attributed to breakdown of the current transformer of the 301 circuit breaker at the LV side of the main transformer. Proper measures were taken in time for the fault and the outage of the main transformer was shortened. Through the analysis and comparison, the paper proposes corresponding anti-accident measures to ensure the safe and stable operation of the power grid.

关 键 词：330 KV 变电站 变压器 跳闸 

分 类 号：TM722[电气工程—电力系统及自动化]