GIS盆式绝缘子内部气隙放电检测与诊断  

Detection and Diagnosis of Internal Air Gap Discharge in GIS Basin Insulator

作　　者：赵琳 邵先军 王绍安 陈孝信 郑文哲 ZHAO Lin;SHAO Xianjun;WANG Shao’an;CHEN Xiaoxin;ZHENG Wenzhe(Electric Power Research Institute of State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,浙江杭州310014

出　　处：《电力安全技术》2023年第11期75-78,共4页Electric Safety Technology

摘　　要：针对一起550 kV GIS设备母线特高频局部放电异常的缺陷,根据现场带电检测对缺陷进行初步分析;其次结合局部放电重症监护系统的监测,判断该相母线内部存在间歇性绝缘缺陷放电;利用时差定位法对母线内部放电缺陷位置精准定位,通过设备返厂试验验证了现场检测与诊断的有效性,并进一步探讨盆式绝缘子出厂试验检测方法的可靠性。In allusion to a defect of abnormal ultra-high-frequency detection of partial discharge in a 550 kV GIS equipment bus,the defects are preliminarily analyzed based on the field live detection data,and the intermittent discharge is determined inside the phase bus due to insulation defect according to the monitoring of the partial discharge intensive care system,upon which the time difference positioning method is used to accurately locate the internal discharge defect position of the bus.The defected equipment is dismantled for return tests which proves the verification of the field tests and diagnosis,and the reliability of ex-factory tests on such basin insulators is further discussed.

关 键 词：盆式绝缘子 气隙放电 特高频 故障诊断 

分 类 号：TM216[一般工业技术—材料科学与工程]