CAJ | 학술논문

自由金属微粒是气体绝缘开关设备(GIS)中最常见的缺陷之一，极易引起绝缘子闪络等绝缘故障。建立了自由金属微粒的典型缺陷模型并进行大量局部放电试验，对信号的工频相位相关性进行判断，确定了不同缺陷类型、不同试验电压下放电超声波飞行图的特征差异，为GIS中自由金属微粒缺陷的识别和诊断提供了一种有效的方法。
자유금속미립시기체절연개관설비(GIS)중최상견적결함지일，겁역인기절연자섬락등절연고장。건립료자유금속미립적전형결함모형병진행대량국부방전시험，대신호적공빈상위상관성진행판단，학정료불동결함류형、불동시험전압하방전초성파비행도적특정차이，위GIS중자유금속미립결함적식별화진단제공료일충유효적방법。
Free metal particle is one of the most common defects of gas insulated switchgear (GIS), which causes insulation faults such as insulatorfiashover etc. easily. The typical defect model of free metal particle was set up and a great lot of partial discharge experiments were taken in lab. Power frequency phase correlation of signals was judged to detect different characteristics of ultrasonicfiighting plot of different defects under different level of testing voltage, which provides a kind of effective recognition and diagnosis method for free metal particle defect in GIS.