摘要
为避免高压电缆运行中轴向力和电动力对电缆的损伤,以220 kV 2500 mm2电缆为例,分析计算了电缆蛇形敷设时半蛇形弧节距、蛇形弧幅等参数对轴向力、金属套伸缩应变的影响。分析结果表明,蛇形弧幅和半蛇形幅节距对轴向力控制有重要作用。同时,计算了电缆短路时的电动力并进行了电缆夹具布置的校验,通过设置合理的蛇形敷设参数,可以有效吸收轴向力带来的形变。本文可为电缆蛇形敷设和校验提供参考。
In order to avoid the damage caused by axial force and electrodynamic force during operation of highvoltage cable,taking 220 kV 2500 mm2 cable as an example,analyzed and calculated the influence of parameters such as half-serpentine pitch and serpentine arc amplitude on axial force and expansion strain of metal sheath during the serpentine laying of cable.The analysis showed that the pitch of serpentine laying arc and the pitch of the half serpentine laying arc play an important role in controlling axial force.At the same time,the electrodynamic force during short circuit was calculated and the arrangement of cable clamps was verified.By setting reasonable serpentine laying parameters,the deformation caused by axial force could be effectively absorbed.This paper could provide reference for parameter design and verification of high-voltage cable serpentine laying.
作者
冯涛
陈雅琴
李浩浩
董琦
FENG Tao;CHEN Yaqin;LI Haohao;DONG Qi(Jiangsu Shangshang Cable Group,Liyang 213300,China)
出处
《电线电缆》
2025年第6期78-82,共5页
Wire & Cable
关键词
蛇形敷设
蛇形节距
轴向力
短路电动力校验
serpentine laying
serpentine pitch
axial force
short circuit electrodynamic verification
