一起单芯电缆金属护套接地保护缺陷分析

摘要

随着电力电缆的广泛应用及运行时间变长，其运维管理面临着很多新挑战。文中对高压单芯电缆金属护套接地保护的问题进行分析，同时以某35kV单芯电缆金属护套接地线断裂缺陷为例，分析了电缆缺陷原因及处理过程，并对运行中单芯电缆护套接地保护方式的应用及维护提出了几点建议。%Methods of ground protections for metal sheath of high voltage single-core cable are introduced briefly in this paper. Meanwhile, taking the ground lead fracture defect for metal sheath of 35kV single-core cable happened in State Grid Qingdao Power Supply Company as an example, combing the situation of critical defect treatments of actual cables, the applications of ground protection for metal sheath of single-core cable, the causes and treating process of the failures are analyzed, and several suggestions for the application of ground protections for sheath of single-core cable are presented.