气体绝缘变电站(GIS)设备早期故障的声学诊断技术  

Applications of Acoustic Techniques in Detecting EarlyWarning Signals in GIS EquipmentApplications of Acoustic Techniques in Detecting EarlyWarning Signals in GIS Equipment

作　　者：张丽娜[1] 

机构地区：[1]河北省电力试验研究所

出　　处：《国际电力》2003年第1期24-26,共3页

摘　　要：介绍加拿大魁北克水电局研究所采用声学法检测全封闭气体绝缘变电站早期故障信号的情况。研究表明该方法的灵敏度与超高频技术相当,但其有效作用半径较小。然而,利用这一特性可非常准确地确定放电源和金属颗粒的位置。这种声波绝缘检测器(AIA)的灵敏度远高于手提式探测器。AIA对故障的定位和特征描述能力更强,可判定检测到的异常现象的故障类型及其影响。Hydro-Quebec has developed an efficent acoustic method for detecting early warning signals in GIS equipment,which has been confirmed by the laboratory and field tests that the sensitivity of the acoustic insulation analyzer(AIA) iscomparable to that of the ultra high-frequency(UHF), but its radius of action is considerably less. However, this featuremakes it possible to locate the sources of discharges or particles with extreme accuracy.

关 键 词：气体绝缘变电站 声学法 局部放电 故障诊断 全封闭组合电器 

分 类 号：TM63[电气工程—电力系统及自动化] TM595