一起66 kV运行电缆中发现接头缺陷的案例

Case of Joint Defect Found in 66 kV Cable Line in Operation

介绍了一起利用局部放电(局放)检测设备在运行中的电缆线路内部发现缺陷的案例。根据局放检测结果,对存在缺陷的电缆接头进行了更换,对该接头解剖后,在接头内部发现了明显的放电痕迹。通过局放检测发现了运行电缆中存在的缺陷,避免事故发生,证明局放检测作为绝缘诊断手段是切实有效的,同时局放检测结果可以为运维管理部门制定工作提供借鉴。

It introduced the case of joint defect which was found inside the cable line in operation used the partial discharge detection equipment.According to the test results,Dalian company replaced the defective cable joint.After dissecting the joint,it was found that there was obvious discharge trace inside the joint.The defects in the cable line in operation were found through the local discharge inspection to avoid the occurrence of accidents.The partial discharge detection was an effective way to detect defects which already occurred in operation line.At the same time,the results could provide reference for the work of operation and maintenance management department.