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500kV主变压器两次夹件多点接地故障的分析处理

Transformer(2013)

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Abstract
<正>1引言主变压器夹件多点接地后,穿过闭合接地回路有局部漏磁通,将产生一定的感应电压,闭合接地回路中大电流流过非正常接地点和夹件引出线的焊接点引起发热,将给变压器的安全运行带来影响,如不及时处理或加以限制,有可能引发设备事故。某500kV变电站1号主变为单相组合式变压
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