Partial discharge investigation of a power transformer using wireless wideband radio-frequency measurements
Partial discharge investigation of a power transformer using wireless wideband radio-frequency measurements
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DOI：
10.1109/tpwrd.2005.848438
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发表时间：
2006-01-01
影响因子：
4.4
通讯作者：
Glover, IA
中科院分区：
文献类型：
--
作者：
Moore, PJ;Portugues, IE;Glover, IA
已使用移动宽带射频接收设备演示了变压器内部局部放电 (PD) 的远程检测。由于变压器油箱内的耦合，PD 可从外部检测到，从而导致从外部连接辐射脉冲信号。使用四天线阵列的宽带测向技术表明辐射源是三级绕组连接；辐射脉冲具有这种发射方法的典型特征。没有检测到变压器的其他外部辐射部位。由于缺乏与初级和次级绕组的耦合，因此认为PD存在于三级绕组和铁芯之间。
The remote detection of a transformer internal partial discharge (PD) has been demonstrated using mobile wideband radio-frequency receiving equipment. The PD is externally detectable due to coupling within the transformer tank, causing impulsive signals to be radiated from external connections. A wideband direction-finding technique using a four-antenna array has shown the source of the radiation to be the tertiary winding connections; the radiated impulse has characteristics typical of this method of emission. No other external site of radiation from the transformer was detected. Due to the lack of coupling to the primary and secondary windings, it is believed that the PD is present between the tertiary windings and the core.