CAJ | 학술논문

为分析某金属氧化物避雷器泄漏电流增大及局部发热的原因，结合避雷器带电检测数据、停电试验数据、历史数据及相关规程进行避雷器运行状态诊断，确定该避雷器处于严重缺陷状态。通过解体检查、试验，发现该避雷器绝缘强度分布不均匀，底部金属氧化物电阻片老化，绝缘电阻下降。
위분석모금속양화물피뢰기설루전류증대급국부발열적원인，결합피뢰기대전검측수거、정전시험수거、역사수거급상관규정진행피뢰기운행상태진단，학정해피뢰기처우엄중결함상태。통과해체검사、시험，발현해피뢰기절연강도분포불균균，저부금속양화물전조편노화，절연전조하강。
For analyzing reasons of leakage current increase and local heating of the metal oxide arrester (MOA), this paper diagnoses the operating state of MOA by combining live testing record, power-off test da-ta, historical data and relevant regulations and determines that the MOA is in a state of serious defect. The uneven distribution of insulating strength, resistors aging of metal oxide at the bottom of the MOA and the de-crease of insulation resistance are found through disintegrating inspection and test.