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The authors have studied insulation diagnostic technique of gas-insulated switchgear (GIS) by UHF (ultra high frequency) method. In this paper, the authors investigated the effect of insulating spacer type (metal flange type (MT) or bush type (BT)) on the propagation properties of partial discharge (PD) induced electromagnetic (EM) wave in GIS with UHF method. Low pass filtering process for cutoff...
The authors have studied insulation diagnostic technique of gas-insulated switchgear (GIS) by UHF method. In this paper, we investigated the effect of spacer type (metal flange type (MT) or bush type (BT)) on the propagation properties of PD-induced EM wave in GIS with UHF method. Low pass filtering process for cut-off frequency of TE11 mode was used to eliminate the higher order mode above TE11 of...
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