单芯并联电缆布置方式的分析

电缆布置方式的规范性对电缆运行可靠性和寿命产生巨大影响。特别在大电流多根单芯并联电缆中,不同的布置方式对电缆感抗、并联回路电流分配的均匀性、电缆金属铠装的感应电压以及电缆金属支架的涡流都有一定程度的作用。文章通过对一起因电缆敷设问题造成电缆绝缘受损接地的事故分析,提出临时弥补措施,阐述了电缆正确的布置方式。

The standardization of cable layout has a great impact on the reliability and service life of cable operation.Especially in the high-current multiple single-core parallel cables,different arrangements have a certain effect on the cable inductance,the uniformity of current distribution in the parallel circuit,the induced voltage of the metal-armored cable,and the eddy current of the cable metal bracket.Based on the analysis of an accident of damaged grounding of cable insulation caused by cable laying problems,this paper puts forward temporary remedial measures and expounds the correct arrangement of cables.