Surface Temperature Distribution and Statistical Characteristics of Cable Joints Under Eccentric Conditions

GAN Degang; ZHANG Li; ZHANG Ran; LUO Yangxiyue; WU Chi; LI Weiwei; ZHU Ke; YANG Fan

doi:10.13296/j.1001-1609.hva.2019.06.017

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Surface Temperature Distribution and Statistical Characteristics of Cable Joints Under Eccentric Conditions

更新时间：2025-04-26

- Surface Temperature Distribution and Statistical Characteristics of Cable Joints Under Eccentric Conditions
- High VoltageApparatus Vol. 55, Issue 6, Pages: 117-123(2019)
- 作者机构：
  
  1. 国网四川省电力公司电力科学研究院
  2. 重庆大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.06.017
  CLC： TM75
- Published：2019
- 稿件说明：
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[1]甘德刚,张莉,张燃,罗杨茜玥,吴驰,李巍巍,朱轲,杨帆.电缆接头偏心情况下的表面温度分布及统计特性研究[J].高压电器,2019,55(06):117-123.

GAN Degang, ZHANG Li, ZHANG Ran, et al. Surface Temperature Distribution and Statistical Characteristics of Cable Joints Under Eccentric Conditions[J]. High voltageapparatus, 2019, 55(6): 117-123.
[1]甘德刚,张莉,张燃,罗杨茜玥,吴驰,李巍巍,朱轲,杨帆.电缆接头偏心情况下的表面温度分布及统计特性研究[J].高压电器,2019,55(06):117-123. DOI： 10.13296/j.1001-1609.hva.2019.06.017.

GAN Degang, ZHANG Li, ZHANG Ran, et al. Surface Temperature Distribution and Statistical Characteristics of Cable Joints Under Eccentric Conditions[J]. High voltageapparatus, 2019, 55(6): 117-123. DOI： 10.13296/j.1001-1609.hva.2019.06.017.

摘要

电缆接头偏心导致绝缘性能变差和局部过热

加速绝缘老化和击穿

严重时会造成电缆爆炸。因此

文中提出了一种基于表面温度统计特性的表征电缆接头偏心情况的方法

首先建立了电缆接头的电磁—热多物理场模型

在验证模型准确性的基础上

仿真验证了利用表面温度统计特性表征电缆接头偏心程度的有效性;其次

搭建了电缆接头偏心模拟试验平台

试验分析了不同偏心度下的温度概率密度曲线分布规律。结果表明:利用电缆接头表面温度统计特性能够较好的反映电缆接头偏心情况

且可利用统计参数与电缆偏心程度间的数学关系逆向推知电缆接头偏心度。

Abstract

The eccentricity of cable joint may cause local overheating and variation of insulation performance

which will accelerate insulation aging

cause insulation breakdown and explosion of the cable in severe case. As a result

this paper puts forward the method to judge the eccentricity of the cable

which is based on the statistical characteristics of surficial temperature. This paper carries out the following work. Firstly

the electromagnetic-thermal field coupling model of cable joint is built. On the basis of verifying the accuracy of the model

the validity of the statistical characteristics of surface temperature to characterize the degree of eccentricity of cable joints is verified by simulation. Secondly

a simulation test platform for cable joint eccentricity is built

and the distribution regulation of temperature probability density curve under different eccentricity is tested and analyzed. The result shows that the statistical characteristics of cable’s surficial temperature could reflect the eccentricity of the cable joint well. What’s more

through mathematical relationship between the statistical parameter and the degree of cable’s eccentricity

we could judge the degree of cable’s eccentricity.

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