考虑超声波传播特性对GIS内部自由金属粒子的游离尺寸评价  

Evaluation on escaped dimensions of free metal particles in GIS out of spreading chracteristics of super sonic wave

作　　者：张宪华 

出　　处：《华通技术》2007年第1期37-42,共6页

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.

关 键 词：气体绝缘金属封闭开关设备 超声波检测法 自由金属粒子 绝缘击穿 

分 类 号：TM595[电气工程—电器]