摘要
介绍采用电磁波及超声波检测法探讨精确诊断GIS内部是否有金属粒子存在、位置以及绝缘击穿危险程度的诊断检则。以GIS罐内进行的金属粒子自由落下的试验,探计了有关产生超声波波形的衰减、螺旋波以及速度分散等传播特性,根据校正的超声波振幅值评价了GIS内游离的金属粒子的尺寸。
Probing on accurate diagnose whether there is metal particles in GIS or not, position of the metalo particles and insulation breakthrought risk degree with electromagnetic wave and super sonilc wave inspecting method. Probing on spreading characteristics of attenuation of super sonic wave and spiral wave and speed distribution by a test of free drop of metal particle in a GIS tank. Evluating escaped dimensions of free metal particles in GIS as per corrected altitude of super sonic waves.
