CAJ | 학술논문

在变电站高压设备巡视中通过红外检测发现运行中的110 kV主变压器套管局部发热异常.综合应用红外、紫外成像和超声波局放检测技术诊断瓷套管存在裂纹或污秽缺陷.停电检查套管发现其表面积污严重,部分伞裙有明显的放电痕迹.分析认为引起发热和局部放电异常的原因是瓷套管表面污秽受潮.对瓷套管表面进行喷涂PRTV涂料处理后,套管带电检测数据正常,消除了套管缺陷,并提出了防污闪的建议.
재변전참고압설비순시중통과홍외검측발현운행중적110 kV주변압기투관국부발열이상.종합응용홍외、자외성상화초성파국방검측기술진단자투관존재렬문혹오예결함.정전검사투관발현기표면적오엄중,부분산군유명현적방전흔적.분석인위인기발열화국부방전이상적원인시자투관표면오예수조.대자투관표면진행분도PRTV도료처리후,투관대전검측수거정상,소제료투관결함,병제출료방오섬적건의.
An operating 110 kV transformer bushing was found abnormal local heating by infrared detec-tion in the inspection of transformer substation equipment; and crack or pollution defects were indicated in the porcelain bushing through comprehensive diagnoses of infrared, ultraviolet imaging and ultrasound PD detection technique. The surface of the bushing was found seriously polluted, and part of the umbrel-la skirt had obvious discharge tracks. It is analyzed that heating and partial discharge are caused by the porcelain bushing’s surface pollution and wetness. After spraying PRTV coating on the porcelain bushing surface, the charged detection data restore normal condition and the defects are eliminated. Some anti-pol-lution suggestions are then put forward.