混合排列方式下高压电缆护套环流特性仿真分析  

Simulation Analysisof Circulating Current Characteristic of High-Voltage Cable Sheath in Mixed Arrangement

作　　者：甄瑞峰 鲁志伟[1] 马微然 庄鹏 ZHEN Ruifeng;LU Zhiwei;MA Weiran;ZHUANG Peng(Electrical Engineering College,Northeast Electric Power University,Jilin Jilin 132012)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2023年第2期25-30,67,共7页Journal of Northeast Electric Power University

基　　金：国网吉林省电力有限公司辽源供电公司科技项目(SGTYHT/20-JS-224)。

摘　　要：高压单芯电缆金属护套中的环流过大会增加线路损耗。为了限制护套环流,提高电缆运行寿命,文中利用电磁暂态软件ATP-EMTP建立电缆模型,计算分析了混合排列方式下110 kV高压单芯电缆在不同工况时的护套环流变化情况。首先,通过环流比来判断分段长度对电缆环流的影响,在此基础上,引入不平衡度的概念对电缆的最大敷设距离进行评估,最后又研究了相序变化对护套环流的影响,得到合理方案。结论对电缆线路设计、施工具有一定参考价值。Excessive circulation in metal sheath of high-voltage single core cable will increase line loss.In order to limit sheath circulation and improve cable service life,this paper used the electromagnetic transient software ATP-EMTP to establish a cable model with distributed parameters,and calculated and analyzed the sheath circulation variation of 110kV high-voltage single-core cable under different working conditions under mixed arrangement mode.Firstly,the influence of segment length on cable circulation was judged by circulation ratio.On this basis,the concept of unbalance degree was introduced to evaluate the maximum laying distance of cable.Finally,the influence of phase sequence change on sheath circulation was studied and a reasonable scheme was obtained.The simulation results have certain reference value for cable line design and construction.

关 键 词：高压电缆 护套环流 混合排列 相序变化 

分 类 号：TM247[一般工业技术—材料科学与工程]