Research and Analysis on Mathematical Model of Temperature Rise Threshold at Electrical Contact Position of Cable Termination of Ring Main Unit

LU Depeng; HAN Dong; WU Xiwei; HUANG Jing

doi:10.13296/j.1001-1609.hva.2025.12.018

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Research and Analysis on Mathematical Model of Temperature Rise Threshold at Electrical Contact Position of Cable Termination of Ring Main Unit

Research & Analysis | 更新时间：2025-12-09

- Research and Analysis on Mathematical Model of Temperature Rise Threshold at Electrical Contact Position of Cable Termination of Ring Main Unit
- High Voltage Apparatus Vol. 61, Issue 12, Pages: 133-137(2025)
- 作者机构：
  
  国网电力科学研究院（南瑞集团）有限公司，南京 211106
  国家电网公司（常州）电气设备监测中心，江苏常州 213001
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2025.12.018
  CLC：
- Received：19 June 2025，
  
  Revised：2025-09-02，
  
  Published：16 December 2025
- 稿件说明：
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LU Depeng, HAN Dong, WU Xiwei, et al. Research and Analysis on Mathematical Model of Temperature Rise Threshold at Electrical Contact Position of Cable Termination of Ring Main Unit[J]. High Voltage Apparatus, 2025, 61(12): 133-137.
DOI：

LU Depeng, HAN Dong, WU Xiwei, et al. Research and Analysis on Mathematical Model of Temperature Rise Threshold at Electrical Contact Position of Cable Termination of Ring Main Unit[J]. High Voltage Apparatus, 2025, 61(12): 133-137. DOI： 10.13296/j.1001-1609.hva.2025.12.018.

摘要

环网柜电缆头温升是反映其运行状况的一个重要指标，通过温升阈值判断其是否存在电接触缺陷可提高产品安全运行水平。文中通过温升试验研究了环网柜电缆头电接触部位的稳定温升与负荷电流之间的关系，并在此基础上建立了温升预警阈值数学模型。通过试验验证了温升预警阈值数学模型的正确性，为环网柜电缆头温升在线监测和预警系统提供了可靠的判断依据。

Abstract

The temperature rise of cable termination of ring main unit is an important indicator to reflect its operation condition. The judgement of the existance of electrical contact defect through the temperature rise threshold can improve safe operation level of the product. In this paper the relationship between the stable temperature rise and the load current at the electric contact part of the cable termination of the ring main unit is studied and

on this basis

the mathematical model of the temperature rise early warning threshold is set up. The correctness of the mathematical model of temperature rise early warning threshold is verified by experiments

which provides a reliable basis for the online monitoring and early warning system of temperature rise of cable termination of ring main unit.

关键词

Keywords

references

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Related Author

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Related Institution

NARI Group (State Grid Electric Power Research Institute Co., Ltd.

西安交通大学 710049

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