单芯电缆金属护套感应电压研究

本文借助电磁暂态分析软件搭建了27.5 kV单芯电力电缆仿真模型,并对模型进行了验证,以保证仿真数据准确性。基于电缆仿真平台,重点对影响电缆金属护套感应电压的主要影响因素进行了仿真分析,提出了最优的电缆布置方案。同时,结合工程中电缆金属屏蔽层与铠装层两种典型接线方式下的环流问题进行了研究,最后提出了改进方案。该研究结果对今后电缆工程敷设具有指导价值。

This paper sets up a 27.5 kV single-core power cable simulation model by electromagnetic transient analysis software.The model is verified to ensure the accuracy of the simulation data.Based on the cable simulation platform,This article focuses on the simulation analysis of the main influencing factors that affect the induced voltage of the electric cable sheath,Through research on various influencing factors,the optimal cable layout scheme is proposed.At the same time,combined with the two typical wiring methods of cable metal shielding layer and armoring layer in the project,the current circulation problem was studied.Finally,an improvement plan is proposed.The results of this study have important guiding value for the laying of cable projects in the future.