一起220 kV CVT二次失压故障的分析与试验  

Fault Analysis and Test on Secondary Voltage Loss of 220 kV Capacitor Voltage Transforme

作　　者：易冉[1] 梁育雄[1] 黄启泰[1] 黄培专[1] 方义治 郭小凯[1] 

机构地区：[1]广东电网公司珠海供电局,广东珠海519000

出　　处：《电力电容器与无功补偿》2014年第5期86-91,95,共7页Power Capacitor & Reactive Power Compensation

摘　　要：针对一起220 kV电容式电压互感器(CVT)二次失压的故障,根据其结构特点对可能导致此类故障的各种原因作出分析,结合现场试验,初步判断故障原因为CVT中间变压器一次绕组并联避雷器失效,通过对故障CVT的解体和解体后的试验证实了这个判断。解剖了缺陷避雷器,对避雷器失效的原因作出分析,并提出预防此类故障的措施。Aiming to the fault of secondary voltage loss of 220 kV capacitor voltage transformer（CVT）inthispaper,variousreasonspossiblyleadingtosuchfault areanalyzedbasedonits structure feature and it is judged preliminarily with combination of test on site that the reason is the out of function of arrester in parallel with intermediate transformer of CVT. The judgment is proved by the disassembly and test of the faulty CVT. The arrester with defect and the out of function reason are analyzed and prevention measures on such fault are proposed.

关 键 词：电容式电压互感器(CVT) 二次失压 避雷器 故障分析 

分 类 号：TM451.2[电气工程—电器]