CAJ | 학술논문

在传统脉冲电流法的基础上,设计了直流电压下脉冲电流检测系统。通过施加直流电压和交流电压,对气体绝缘金属封闭开关设备(gas insulated metal enclosed switchgear and controlgear,GIS)内部缺陷的局部放电信号进行检测。直流电压和交流电压下局部放电信号特征对比结果表明,直流电压下局部放电起始电压较交流电压下低,直流检测技术可以高效、准确地检测缺陷局部放电。
재전통맥충전류법적기출상,설계료직류전압하맥충전류검측계통。통과시가직류전압화교류전압,대기체절연금속봉폐개관설비(gas insulated metal enclosed switchgear and controlgear,GIS)내부결함적국부방전신호진행검측。직류전압화교류전압하국부방전신호특정대비결과표명,직류전압하국부방전기시전압교교류전압하저,직류검측기술가이고효、준학지검측결함국부방전。
On the basis of traditional pulse current method,this paper introduces design of pulse current detection system by direct current voltage.By inflicting DC and alternative current,it detects partial discharge signal of inner defects in gas insu-lated metal enclosed switchgear.Comparison result of characteristics of partial discharge signals indicate that the partial dis-charge initial voltage by DC is lower than by AC.That is to say that DC detection technology is able to efficiently and cor-rectly detect partial discharge of defect.