基于相似原理求解隧道电缆稳态温升的计算方法研究

傅晨钊; 司文荣; 赵莹莹; 梁永春

doi:10.13296/j.1001-1609.hva.2026.09.022

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基于相似原理求解隧道电缆稳态温升的计算方法研究

电力装备仿真、热与电磁特性分析 | 更新时间：2026-09-10

- 基于相似原理求解隧道电缆稳态温升的计算方法研究
- Study on Calculation Method for Steady-state Temperature Rise of Tunnel Cables Based on Similarity Principle
- 高压电器 2026年62卷第9期页码：221-227
- 作者机构：
  
  国网上海市电力公司电力科学研究院，上海 200437
  河北科技大学，石家庄 050018
- 作者简介：
  
  傅晨钊（1975—），男，工学博士，正高级工程师，主要研究方向为输变电设备运行检测技术（E-mail：13512111246@139.com）。
  梁永春（1971—），男，工学博士，教授，主要研究方向为电力电缆热状态评估（通信作者）（E-mail：lycocean@163.com）。
- 基金信息：
  
  国网上海市电力公司科技项目;Science and Technology Project of State Grid Shanghai Municipal Electric Power Company(520940250024)
- DOI：10.13296/j.1001-1609.hva.2026.09.022
  中图分类号：
- 收稿：2026-04-08，
  
  修回：2026-06-09，
  
  纸质出版：2026-09-16
- 稿件说明：
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傅晨钊, 司文荣, 赵莹莹, 等. 基于相似原理求解隧道电缆稳态温升的计算方法研究[J]. 高压电器, 2026,62(9):221-227.

FU Chenzhao, SI Wenrong, ZHAO Yingying, et al. Study on Calculation Method for Steady-state Temperature Rise of Tunnel Cables Based on Similarity Principle[J]. High Voltage Apparatus, 2026, 62(9): 221-227.
傅晨钊, 司文荣, 赵莹莹, 等. 基于相似原理求解隧道电缆稳态温升的计算方法研究[J]. 高压电器, 2026,62(9):221-227. DOI： 10.13296/j.1001-1609.hva.2026.09.022.

FU Chenzhao, SI Wenrong, ZHAO Yingying, et al. Study on Calculation Method for Steady-state Temperature Rise of Tunnel Cables Based on Similarity Principle[J]. High Voltage Apparatus, 2026, 62(9): 221-227. DOI： 10.13296/j.1001-1609.hva.2026.09.022.

摘要

文中提出了一种基于相似原理求解电缆温升的计算方法。利用相似性与气体辐射特性等传热学知识，将隧道电缆温升计算涉及的对流与辐射相对分离。通过比例缩放，实现利用小尺寸模型下的对流特性反映大尺寸模型的对流传热特性，结合辐射散热系数求解，联立建立表示隧道电缆组温升特性的隐函数方程组，将场域的仿真计算转化为方程组的求解，从而在较少计算资源下进行电缆温升的快速计算。算例验证表明，该方法可信，误差可控，极大提高计算准确性与效率。

Abstract

In this paper a calculation method for determining calble temperature rise based on the similarity principle is presented. By leveraging heat transfer principles such as similarity theory and gas radiation charcateristics

the convective and radiative componsnes involved in the calculation of tunnel calbe temperature rise are relatively decoupled from each other. Through proportional scaling

the convective heat transfer characteristics of the fullscale model are represented by those obtained from a small-scale model. Combined with the determination of the radiative heat tranfer coefficient

a system of implict equations characterizing the temperature rise behavior of the tunnel cable group is established. By transforming the field simulation into the solution of this equation system

rapid cable temperature rise calculation is achieved with relatively low computional resources. Validation through case studies demonstrates that the proposed method is reliable with controllable errors

significantly improving both computional accuracy and efficiency.

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