一起窝气积聚导致主变跳闸事故分析  

Analysis of a Main Transformer Tripping Accident Caused by Gas Accumulation

作　　者：张涛 ZHANG Tao(Zhangzhou Power Supply Company of State Grid Fujian Electric Power Co.,Ltd.,Zhangzhou 363000,China)

机构地区：[1]国网福建电力有限公司漳州供电公司,福建漳州363000

出　　处：《安徽电气工程职业技术学院学报》2023年第3期24-30,共7页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：文章介绍了一起因有载开关重瓦斯保护动作引起的主变压器跳闸事故。首先通过分析动作前后的有载开关相关报文信息推断出其工作状态,再结合对有载开关及其附属设备(有载瓦斯继电器和在线滤油装置等)检查和吊芯试验结果,分析得出造成本次跳闸事故的主要原因是在线滤油装置管道窝气。随后分析本次事故中管道窝气积聚的原因,阐明了暴露出的问题。最后针对问题,提出了相应的防范措施。This paper introduces a tripping accident of the main transformer caused by the heavy gas protection action of the on-load switch.Firstly,the working state is inferred by analyzing the information related to the on-load switch before and after the action.Combined with the inspection of the on-load switch and its ancillary equipment(on-load gas relay and online oil filter device,etc.)and the core test result,it is revealed that the pipeline gas of the online oil filter device is the main cause of the tripping accident.Then,the reasons for the accumulation of pipeline gas in this accident are analyzed,and the problems are clarified.Finally,corresponding preventive measures are proposed for the exposed problems.

关 键 词：重瓦斯动作 有载开关 窝气 

分 类 号：TM410.7[电气工程—电器]