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一起主变空投差动动作原因分析
引用本文:殷峰,吴茂乾,董彦文,曹向军,张宏斌,王锦山. 一起主变空投差动动作原因分析[J]. 能源技术(上海), 2014, 0(1): 104-105,109
作者姓名:殷峰  吴茂乾  董彦文  曹向军  张宏斌  王锦山
作者单位:国网奎屯供电公司,新疆奎屯833200
摘    要:对某110kV变电站空投变压器时,主变差动保护动作原因进行了分析,得出本次空投导致差动保护动作的原因是励磁涌流中的二次谐波含量低于整定定值0.2,导致A相和B相闭锁条件开放,差动出口跳闸。

关 键 词:差动保护  变压器  故障分析

Analysis of a Main Transformer Differential Action Airdrop
Yin Feng,Wu Maoqian,Dong Yanwen,Cao Xiangjun,Zhang Hongbin,Wang Jin-shan. Analysis of a Main Transformer Differential Action Airdrop[J]. Energy Technology, 2014, 0(1): 104-105,109
Authors:Yin Feng  Wu Maoqian  Dong Yanwen  Cao Xiangjun  Zhang Hongbin  Wang Jin-shan
Affiliation:(Kuitun Power Supply Bureau, State Grid, Kuitun 833200, China)
Abstract:Airdrop of one 110 kV transformer substation, main transformer protection action causcs a detailed analysis, the cause of this drop is due to differential protection inrush current of the second harmonic content is lower than the setting value 0.2, resulting in A, B phase locking condition open differential export tripping.
Keywords:Differential protection  Power transformer  Fault analysis
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