Measurements of AC Partial Discharge of an Aged Cast Resin Transformer after Impulse Voltage Applications

カテゴリ: 部門大会

論文No: 14-B-a1-3

グループ名: 【A】令和4年電気学会基礎・材料・共通部門大会

発行日: 2022/08/30

著者名: Yao Yuanahng(Kyushu Insutitute of Technology), Kozako Masahiro(Kyushu Insutitute of Technology), Koresawa Ryota(Kyushu Insutitute of Technology), Kawano Hideaki(Kyushu Insutitute of Technology), Hikita Masayuki(Kyushu Insutitute of Technology), Takei Kats

キーワード: Cast resin transformer|Partial discharge|Surge voltage|Insulation degradation

要約(日本語): To study the insulation state of an aged 22 kV cast resin transformer (CRTr), impulse voltage testing was carried out to accelerate the deterioration of the insulation in the CRTr. Partial discharges (PDs) are measured at AC voltage to characterize the degree of degradation after multiple surge voltages were applied to the high voltage windings. Based on PD inception voltage (PDIV) and phase-resolved partial discharge (PRPD) patterns, the insulation degradation of the CRTr was discussed.

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