Fast Assessment Method for Real-time Dynamic Current-carrying Capacity of Buried Power Cables

SI Wenrong; LIANG Yongchun; ZHAO Yingying; FU Chenzhao

doi:10.13296/j.1001-1609.hva.2026.02.019

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Fast Assessment Method for Real-time Dynamic Current-carrying Capacity of Buried Power Cables

Research & Analysis | 更新时间：2026-03-16

- Fast Assessment Method for Real-time Dynamic Current-carrying Capacity of Buried Power Cables
- High Voltage Apparatus Vol. 62, Issue 2, Pages: 153-161(2026)
- 作者机构：
  
  华东电力试验研究院有限公司，上海 200437
  国网上海市电力公司，上海 200122
  河北科技大学电气工程学院，石家庄 050018
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.02.019
  CLC：
- Received：11 July 2025，
  
  Revised：2025-10-30，
  
  Published：16 February 2026
- 稿件说明：
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SI Wenrong, LIANG Yongchun, ZHAO Yingying, et al. Fast Assessment Method for Real-time Dynamic Current-carrying Capacity of Buried Power Cables[J]. High Voltage Apparatus, 2026, 62(2): 153-161.
DOI：

SI Wenrong, LIANG Yongchun, ZHAO Yingying, et al. Fast Assessment Method for Real-time Dynamic Current-carrying Capacity of Buried Power Cables[J]. High Voltage Apparatus, 2026, 62(2): 153-161. DOI： 10.13296/j.1001-1609.hva.2026.02.019.

摘要

准确、快速计算应急负荷和转供负荷工况下地埋电力电缆群暂态缆芯温升对于提高电力电缆动态载流能力精细化管理水平具有重要的意义。首先利用有限元稳态分析获得转移矩阵，利用有限元暂态分析获得单根加热电缆下的自热暂态温升数据和其余电缆的互热暂态温升数据；然后构建了复合暂态热路模型，加载电缆的自热热路模型由二支路热阻—热容组成，邻近电缆的互热热路模型由一支路热阻—热容组成，给出了复合暂态热路模型的龙格库塔法求解方法；最后以有限元计算结果为基准，利用遗传算法优化求解复合热路模型的热阻和热容参数。针对具体实例，利用转移矩阵获得各电缆稳态温升，通过每一个时间步修正损耗实现热电耦合，利用复合热路模型计算任意一根电缆的动态载流量。与有限元计算结果对比表明，该方法具有较高的精度，可以用于工程中直埋电缆群的应急负荷和转供负荷电流运维管理。

Abstract

Accurattely and rapidly calculating the transient core temperature rise in buried power cables under emergency load and transferred load conditions is of great significance for improving the refined management level of dynamic current-carrying capacity of power cable. First

a transfer matrix is obtained by using the finite element steadystate analysis

while finite element transient analysis is used to obtain self-heating transient temperature rise data for an single cable and mutual-heating transient temperature rise data for the rest cables. Then

a composite transient thermal circuit model is constructed.The self-heating thermal model of the loaded cable consists of two-branch of thermal resistance-thermal capacitance network

while the mutual-heating thermal circuit model of adjacent cables comprieses a single-branch of thermal resistance-thermal capacitance network

and a Runge-Kutta method is presented to solve this composite transient thermal circuit model. Finally

the finite element simulation results are taken as a benchmark

a genetic algorithm is applied to optimize and solve for the thermal resistance and thermal capacitance parameters of the composite thermal circuit model. For a specific case study

the transfer matrix is used to obtain the steady-state temperature rise of each cable. Thermal-electrical coupling is achieved by updating losses at each time step

and the composite thermal circuit model is then employed to calculate the dynamic current carrying capacity of any individual cable. It is shown by the comparison with the finite element calculation results that the proposed method in this paper has high accuracy and is suitable for engineering applications involving operational management of emergency and load-transfer currents in directly buried cables.

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references

DOUGLASS D A,GENTLE J,NGUYEN H M,et al. A review of dynamic thermal line rating methods with forecasting[J]. IEEE Transactions on Power Delivery,2019,34(6):2100-2109.

梁永春.高压电力电缆温度场和载流量评估研究动态[J].高电压技术,2016,42(4):1142-1150.

LIANG Yongchun. Technological development in evaluating the temperature and ampacity of power cables[J]. High Voltage Engineering, 2016, 42(4):1142-1150.

GIGLIO D A,DE LEÓN F. Dynamic thermal model for different size trefoil power cables with various loads in non-forced-ventilated tunnels[J]. IEEE Transactions on Power Delivery,2023,38(2):1286-1296.

刘文博,谢茂杰,周游,等.土壤微观结构参数对埋地电缆温度与载流量的影响分析[J].高电压技术,2024,50(2):776-785.

LIU Wenbo, XIE Maojie, ZHOU You, et al. Effects of microstructural parameters of soil on temperature and ampacity of the buried cables[J]. High Voltage Engineering, 2024, 50(2):776-785.

BLACK W Z ,PARMER D ,PATEL N,et al. Extended thermal probe method for measuring thermal stability of soils surrounding buried power cables[J]. IEEE Transactions on Power Delivery, 2022,37(6):5169-5178.

牛海清,郑文坚,雷超平,等.基于有限元和粒子群算法的电缆周围土壤热特性参数估算方法[J].高电压技术,2018,44(5):1557-1563.

NIU Haiqing, ZHENG Wenjian, LEI Chaoping, et al. Estimation method for thermal parameters of soil around the cable based on finite element and particle swarm optimization[J]. High Voltage Engineering, 2018, 44(5):1557-1563.

严亚兵,江志文,肖俊先,等.基于高频电流信号的电缆局部放电故障特征分析研究[J].供用电,2024,41(3):96-102.

YAN Yabing, JIANG Zhiwen, XIAO Junxian, et al.Fault characteristics analysis of cable partial discharge based on the high frequency current signal[J].Distribution & Utilization, 2024, 41(3):96-102.

张淞珲,陈子鉴,马超俊,等.基于电场逆计算的三相电缆电压非接触测量方法[J].电测与仪表,2025,62(3):167-175.

ZHANG Songhui, CHEN Zijian, MA Chaojun, et al. Non-contact measurement method of three-phase cable voltage based on inverse calculation of electric field[J]. Electrical Measurement & Instrumentation, 2025, 62(3):167-175.

Electrical cables-calculation of the current rating:IEC 60287:2014[S].2014.

电缆载流量计算第1部分：载流量计算公式（100%负荷因数）和损耗计算：JB/T 10181.1—2014[S].2014.

Calculation of cable ampacity, Part 1:Ampacity calculation formulas (100% load factor) and loss calculations:JB/T 10181.1—2014[S].2014.

电缆载流量计算第2-1部分：18/30(36) kV及以下电缆周期性负载和事故过载的计算：JB/T 10181.2—2000[S].2000.

Calculation of cable ampacity, Part 2-1:Calculation of cyclic and emergency overload ratings for cables up to 18/30(36) kV:JB/T 10181.2—2000[S].2000.

Calculation of the cyclic and emergency current rating of cables:IEC 60853:2002[S]. Geneva:IEC Publication,2002.

OU Xianpeng,XU Wenjie,ZANG Yuanyuan,et al. Mechanical analysis of 500 kV oil-filled submarine power cable in anchor and blade damage based on finite element method[C]//2022 IEEE6th Advanced Information Technology,Electronic and Automation Control Conference (IAEAC).China:IEEE,2022:1068-1072.

DEMIROL Y B,KALENDERLI Ö. Investigation of effect of laying and bonding parameters of high-voltage underground cables on thermal and electrical performances by multiphysics FEM analysis[J]. Electric Power Systems Research,2024(227):109987.

LIANG Yongchun. Steady-state thermal analysis of power cable systems in ducts using streamline-upwind/petrov-galerkin finite element method[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(1):283-290.

张振鹏,赵健康,饶文彬,等.电缆分布式光纤测温系统测量结果符合性的比对试验[J].高电压技术,2012,38(6):1362-1367.

ZHANG Zhenpeng, ZHAO Jiankang, RAO Wenbin, et al. Validate test for the calculation congruity of distributed temperature sensing system[J]. High Voltage Engineering, 2012, 38(6):1362-1367.

CHEN Yu,WANG Shuang,HAO Yi,et al. Temperature monitoring for 500 kV oil-filled submarine cable based on BOTDA distributed optical fiber sensing technology:Method and application[J]. IEEE Transactions on Instrumentation and Measurement,2022(71):1-10.

SINGH R S,COBBEN S,ĆUK V. PMU-based cable temperature monitoring and thermal assessment for dynamic line rating[J]. IEEE Transactions on Power Delivery,2021,36(3):1859-1868.

余兆荣,牛海清,庄小亮,等.直埋配电电缆应急负荷载流量的试验及其应用[J].绝缘材料,2014,47(5):82-86.

YU Zhaorong, NIU Haiqing, ZHUANG Xiaoliang, et al. Emergency load ampacity experiment of buried distribution cable and its application[J]. Insulating Materials, 2014, 47(5):82-86.

刘刚,雷成华.提高单世电缆短时负荷载流量的试验分析[J].高电压技术,2011,37(5):1288-1293.

LIU Gang, LEI Chenghua. Experimental analysis on increasing temporary ampacity of single-core cable[J]. High Voltage Engineering, 2011, 37(5):1288-1293.

李文祥,刘刚,王振华,等. XLPE三芯电缆稳态并联热路模型及实验验证[J].南方电网技术,2015,9(3):57-62.

LI Wenxiang, LIU Gang, WANG Zhenhua, et al. Steady-state parallel thermal circuit model for three-core XLPE cable and its experimental verification[J]. Southern Power System Technology, 2015, 9(3):57-62.

刘刚,王鹏宇,周凡,等.电力电缆暂态热路模型中绝缘层的优化[J].高电压技术,2018,44(5):1549-1556.

LIU Gang, WANG Pengyu, ZHOU Fan, et al. Optimization on the insulating layer of transient thermal circuit model of power cable[J]. High Voltage Engineering, 2018, 44(5):1549-1556.

李新海,陈昱,刘均裕,等.考虑轴向散热的10 kV三芯电缆中间接头稳态热路模型分析[J].电网与清洁能源,2023,39(10):56-62.

LI Xinhai, CHEN Yu, LIU Junyu, et al. A steady state thermal circuit model analysis of the 10 kV 3-core cable joint considering axial heat dissipation[J]. Power System and Clean Energy, 2023, 39 (10):56-62.

马爱清,张杨欢.考虑互热效应的超高压电缆隧道敷设热路模型[J].高电压技术,2022,48(3):1068-1076.

MA Aiqing, ZHANG Yanghuan. Hot path laying model of ultrahigh voltage cable tunnel considering mutual heat effect[J]. High Voltage Engineering, 2022, 48(3):1068-1076.

WANG Pengyu,MA Hui,LIU Gang,et al. Dynamic thermal analysis of high-voltage power cable insulation for cable dynamic thermal rating[J]. IEEE Access,2019(7):56095-56106.

DIAZ-AGUILÓ M,DE LEÓN F,JAZEBI S,et al. Ladder-type soil model for dynamic thermal rating of underground power cables[J]. IEEE Power and Energy Technology Systems Journal,2014(1):21-30.

LUX J,CZERNIUK T,OLSCHEWSKI M,et al. Non-concentric ladder soil model for dynamic rating of buried power cables[J]. IEEE Transactions on Power Delivery,2021,36(1):235-243.

傅晨钊,司文荣,祝令瑜,等.土壤直埋单芯电缆暂态温升计算模型的研究[J].高压电器,2018,54(1):158-163.

FU Chenzhao, SI Wenrong, ZHU Lingyu, et al. Research on the calculation model for transient temperature rise of straight buried single-core cable[J]. High Voltage Apparatus, 2018, 54(1):158-163.

梁永春,王婧雅.基于热路模型和瞬态伴随模型的直埋电缆暂态缆芯温升计算[J].高电压技术,2022,48(9):3517-3525.

LIANG Yongchun, WANG Jingya. Transient temperature rise calculation of buried power cable based on thermal circuit model and transient adjoint model[J]. High Voltage Engineering, 2022, 48 (9):3517-3525.

Electric cables-calculation for current ratings-finite element method:IEC 62095:2003[S].2003.

Finite element analysis for cable rating calculations:TB 963—2025[S].2025.

傅晨钊,司文荣,祝令瑜,等.基于转移矩阵的土壤直埋电缆群稳态温升快速算法研究[J].高压电器,2017,53(12):134-139.

FU Chenzhao, SI Wenrong, ZHU Lingyu, et al. Fast calculation method for steady temperature rise of buried cable group based on transfer matrix[J]. High Voltage Apparatus, 2017, 53(12):134-139.

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