基于声-电-气联合检测的GIS缺陷分析与处理  

Analysis and Treatment of GIS Latent Defects Based on Detection of Acoustic-electric-gas

作　　者：郭伟 汪隆臻 张宿新 刘韧强[2] 李淼 朱元杰 秦光洁 李桂枝 

机构地区：[1]国网安徽电力公司马鞍山供电公司,安徽马鞍山243000 [2]国网安徽省电力公司淮北供电公司,安徽淮北235000 [3]国网安徽电力公司培训中心,合肥230022

出　　处：《高压电器》2018年第1期243-248,251,共7页High Voltage Apparatus

摘　　要：基于GIS气室内部存在缺陷时在运行电压下会产生超声波、电磁波以及SF_6气体分解产物这一现象,笔者利用声—电—气联合检测方法,发现和诊断出某公司GIS气室存在的2例典型缺陷,经解体检查得到验证,为之后开展GIS设备缺陷诊断积累了一线生产经验。案例缺陷的发现及诊断过程表明:在开展带电检测时,不同的检测方法对不同的缺陷类型有不同的适用关系,超高频法和超声波法这2种检测方法对于GIS设备缺陷类型的分析和诊断都存在着一定不足和局限性,2种方法各有优劣,二者之间既不能完全包容,又存在着很大的交集。气体分解产物检测法可以作为一种辅助手段在进行缺陷分析和诊断时作为必要的有益的补充。鉴于此,进行GIS设备缺陷诊断应进行超声波法、超高频法和气体成分检测法3种方法联合检测,综合分析诊断,形成优势互补,达到GIS内部潜伏性缺陷正确诊断的目的,同时还强调应加强驻厂监造和出厂试验见证工作,避免存在缺陷的设备进入电网,把缺陷消除在初始状态。Based on the phenomenon of defective GIS gas chamber under operating voltage producing ultrasomc wave, electromagnetic wave and SF6 gas decomposition products, the author uses acoustic-electric-gas combined detection method to find and diagnose two typical defects in GIS gas chamber, which are verified by overhaul inspection, and accumulated experience for the future GIS equipment defect diagnosis. The case of defects detection and diagnosis process show that the different detection methods are applicable to the different defect types when carrying out the live detection, the two detection methods of ultra high frequency method and ultrasonic method for analysis and diagnosis of GIS equipment defect types have some shortcomings and limitations, the two methods have

关 键 词：GIS 潜伏性缺陷 超声波检测法 超高频法 分解产物法 

分 类 号：TM595[电气工程—电器]