Analysis of Circulating Current in Sheaths of 220 kV XLPE Single-core Cables

WANG Bo; LUO Jin-sheng; HUANG Hong-xin; LU Jun; ZHOU Huan

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Analysis of Circulating Current in Sheaths of 220 kV XLPE Single-core Cables

更新时间：2025-04-26

- Analysis of Circulating Current in Sheaths of 220 kV XLPE Single-core Cables
- High VoltageApparatus Vol. 45, Issue 5, Pages: 141-145(2009)
- 作者机构：
  
  杭州市电力局
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM247
- Published：2009
- 稿件说明：
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[1]王波,罗进圣,黄宏新,吕峻,周焕.220kV高压单芯电力电缆金属护套环流分析[J].高压电器,2009,45(05):141-145.

WANG Bo, LUO Jin-sheng, HUANG Hong-xin, et al. Analysis of Circulating Current in Sheaths of 220 kV XLPE Single-core Cables[J]. High voltageapparatus, 2009, 45(5): 141-145.
[1]王波,罗进圣,黄宏新,吕峻,周焕.220kV高压单芯电力电缆金属护套环流分析[J].高压电器,2009,45(05):141-145. DOI：

WANG Bo, LUO Jin-sheng, HUANG Hong-xin, et al. Analysis of Circulating Current in Sheaths of 220 kV XLPE Single-core Cables[J]. High voltageapparatus, 2009, 45(5): 141-145. DOI：

摘要

根据单芯XLPE电力电缆金属护套环流计算模型

编写C++程序

计算了交叉互联单元内三段电缆布置方式和段长不一致时的金属护套环流

并将计算结果与现场测试结果进行比较分析。根据计算和现场测试结果

一个交叉互联单元内三段电缆的段长和布置方式不一致对金属护套环流有影响

当电缆采用直角三角形和水平布置方式时影响尤为严重。为减小金属护套环流

高压单芯电缆应尽可能采用正三角形布置方式且保证三段电缆布置方式一致

段长尽量相等。

Abstract

By using the calculation model of circulating current in the sheaths of single-core XLPE cables

a C++ program is coded

and the circulating current in a grounding unit

in which sheaths of cables are connected via cross-bonding

is calculated for three-cable connection with different arrangements and lengths.And the calculated results are compared with the data measured in site.According to the calculated results and measured data

different cable arrangement and length of the three-cable connection lead to different circulating current in the sheaths of single-core XLPE cables.To reduce the circulating current in the sheaths

the connected three cables in a grounding unit should take equilateral triangle arrangement with same cable length.

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