Research on the calculation model of AC resistance for overhead conductors considering strand breakage damage

XUE Haijun; WEN Long; GUAN Jie; DING Tongzhen

doi:10.3969/j.issn.1672-3643.2023.04.003

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Research on the calculation model of AC resistance for overhead conductors considering strand breakage damage

更新时间：2026-09-14

- Research on the calculation model of AC resistance for overhead conductors considering strand breakage damage
- Ningxia Electric Power Issue 4, (2023)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1672-3643.2023.04.003
  CLC：
- Online First：12 September 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
XUE Haijun, WEN Long, GUAN Jie, et al. Research on the calculation model of AC resistance for overhead conductors considering strand breakage damage[J]. Ningxia Electric Power, 2023, (4).
DOI：

XUE Haijun, WEN Long, GUAN Jie, et al. Research on the calculation model of AC resistance for overhead conductors considering strand breakage damage[J]. Ningxia Electric Power, 2023, (4). DOI： 10.3969/j.issn.1672-3643.2023.04.003.

摘要

架空导线断股后，相应交流电阻增大，造成线路局部热点，影响输电安全性。现有导线交流电阻计算模型大多针对无损导线建立，为准确评估导线断股发热对线路运行的影响，有必要建立计及断股损伤的导线交流电阻模型。为此，以LGJ-120导线为对象，通过对交流电阻实测，提出断股导线电阻的多项式模型，并利用最小二乘方法对多项式系数进行了估计。计算结果和实验结果对比表明，所提模型具有较高精度，能够在不同断股程度下，有效反映交流电阻随导线温度和电流的变化。

Abstract

When an overhead conductor experiences strand breakage

the corresponding AC resistance increases

leading to the formation of local hotspots in the transmission line

which can adversely affect the safety of power transmission.Existing models for calculating the AC resistance of conductors are primarily developed for conductors without damage.To accurately assess the impact of strand breakage-induced heating on the operation of transmission lines

it is essential to establish a model that considers strand breakage damage.This study focuses on the LGJ-120 conductor and proposes a polynomial model for the resistance of conductors with strand breakage based on AC resistance measurements.The polynomial coefficients are estimated using the least squares method.A comparison between the calculated results and experimental data indicates that the proposed model exhibits high accuracy and can effectively reflect the variations in AC resistance with changes in conductor temperature and current under different degrees of strand breakage.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Single-phase inverter power supply control for chemical instrumentation based on a second-order generalized integrator

Study on key parameters of soil corrosion in substation grounding grids in the Ningxia region

Wind power forecasting based on modal decomposition and TCN – transformer

Impact of AC cables on impedance measurement and oscillation analysis of renewable energy systems and engineering practice

Physical consistency verification of power grid dispatching operations based on multi-task learning

Related Author

No data

Related Institution

No data

AI问答

⁰