基于电磁热多场耦合的直埋电缆导体温度与载流量计算

doi:10.3969/j.issn.1000-1158.2022.07.07

摘要
图/表
参考文献(22)
相关文章 (15)

全文: PDF (2297 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为研究地下电缆导体温度和载流量以及设计合理的电缆敷设方式,结合传热学理论、利用有限元分析法,建立了埋在地下电力电缆的电磁热耦合计算模型,基于该模型载流量的计算结果与基于IEC 60287标准的计算结果进行对比验证。探讨了电缆敷设深度、相间距离、热回填及相序的变化对电力电缆导体温度和载流量的影响,通过多元线性回归分析了不同因素对电缆导体温度及载流量影响的强弱程度。研究结果表明,电缆的敷设方式较大地影响着电缆导体温度及载流量:敷设深度越大,相间距离越小,热回填导热系数越小,电缆导体温度越高,载流量越低;其中,热回填导热系数对电缆导体温度及载流量的影响最为显著,相序影响最小。因此在直埋电缆敷设工程中,应配合高导热系数的热回填,增强电缆散热效果,从而保障电缆安全经济运行。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王彦楠
	李铮
	杨鹏飞
	刘伟

关键词 ：计量学;热路解析模型;散热效果, 电磁热耦合模型;电缆敷设;多元线性回归

Abstract：In order to study the temperature and current carrying capacity of underground cable conductors and design reasonable cable laying methods, combined with the knowledge of heat transfer and using finite element analysis, a calculation model of electromagnetic thermal coupling for buried power cables is established, and the current carrying capacity of the model is calculated. The calculation result is compared and verified with the calculation result based on the IEC 60287 standard. The influence of cable laying depth, interphase distance, thermal backfill and phase sequence changes on the temperature and current carrying capacity of power cable conductors is discussed, and the degree of influence of different factors on the temperature and current carrying capacity of cable conductors is analyzed through multiple linear regression. The research results show that the cable laying method greatly affects the cable conductor temperature and ampacity. The greater the laying depth, the smaller the interphase distance, the smaller the thermal conductivity of the thermal backfill, the higher the cable conductor temperature, the lower the ampacity. The thermal conductivity of backfill has the most significant effect on the temperature and ampacity of the cable conductor, and the phase sequence has the smallest effect. Therefore, in the direct buried cable laying project, thermal backfill with high thermal conductivity should be used to enhance the heat dissipation effect of the cable, thereby ensuring the safe and economic operation of the cable.

Key words： metrology thermal circuit analysis model heat dissipation effect electromagnetic thermal coupling model cable layout multiple linear regression

收稿日期: 2021-04-07 发布日期: 2022-07-18

PACS:

TB94

作者简介: 王彦楠(1981-),男,北京智芯微电子有限公司高级工程师,从事电力设备状态在线检测、硬件电路设计研究工作。Email:wyn_bjzx@163.com

引用本文:

王彦楠,李铮,杨鹏飞,刘伟. 基于电磁热多场耦合的直埋电缆导体温度与载流量计算[J]. 计量学报, 2022, 43(7): 877-884.
WANG Yan-nan,LI Zheng,YANG Peng-fei,LIU Wei. Calculation of Conductor Temperature and Ampacity of Directly Buried Cable Based on Electromagnetic Thermal Multi Field Coupling. Acta Metrologica Sinica, 2022, 43(7): 877-884.

链接本文:

http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2022.07.07 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2022/V43/I7/877

［1］周远翔, 赵健康, 刘睿, 等. 高压/超高压电力电缆关键技术分析及展望［J］. 高电压技术,2014, 40 (9): 2593-2612.
Zhou Y X, Zhao J K, Liu R, et al. Key Technical Analysis and Prospect of High Voltage and Extra-high Voltage Power Cable ［J］. High Voltage Engineering, 2014, 40 (9): 2593-2612.
［2］孟遂民, 陈思凡, 杨鸽子, 等. 隧道电力电缆三角形排列相间距研究［J］. 中国科技论文, 2018, 13 (23): 64-68.
Meng S M, Chen S F, Yang G Z, et al. Study on the triangular arrangement phase spacing of tunnel power cable ［J］. China Sciencepaper, 2018, 13 (23): 64-68.
［3］Rerak M,
Oco＇ｎ P. Thermal analysis of underground power cable system ［J］. Journal of Thermal Science, 2017, 26 (5): 465-471.
［4］IEC 60287-1 Calculation of the current rating-current rating equations (100% load factor) and calculation of losses［S］. 2001.
［5］IEC 60287-2 Calculation of the current rating-thermal resistance［S］.2001.
［6］IEC 60287-3 Calculation of the current rating-sections on operating conditions［S］. 1999.
［7］Bates C, Malmedal K, Cain D. Cable ampacity calculations: A comparison of methods ［J］. IEEE Transactions on Industry Applications, 2015, 52 (1): 112-118.
［8］陈国华, 王贤灿, 官文彤. 厦门电力进岛自容式充油海底电缆供油系统设计［J］. 电网与清洁能源, 2013, 29 (10): 53-58.
Chen G H, Wang X C, Guan W T. Design of the Oil Supply System of Self-Contained Oil-Filling Submarine Cable in Electricity for Xiamen Islands Project ［J］. Advances of Power System & Hydroelectric Engineering, 2013, 29 (10): 53-58.
［9］赵建华, 袁宏永, 范维澄, 等. 基于表面温度场的电缆线芯温度在线诊断研究［J］. 中国电机工程学报,1999, 19(11): 52-54,68.
Zhao J H, Yuan J Y, Fan W C, et al. Surface temperature field based online diagnoses study for electric cables conductor temperature ［J］. Proceedings of The Csee, 1999, 19(11): 52-54.
［10］梁永春, 李彦明, 柴进爱, 等. 地下电缆群稳态温度场和载流量计算新方法［J］. 电工技术学报, 2007, 22(8): 185-190.
Liang Y C, Li Y M, Chai J A, et al. A new method to calculate the steady-state temperature field and ampacity of underground cable system ［J］. Transactions of China Electrotechnical Society. 2007, 22 (8): 185-190.
［11］姜小兵. XLPE电缆线芯温度计算方法研究［J］. 华北电力技术, 2014, (4): 8-11.
Jiang X B. Calculation method of XLPE cable conductor temperature ［J］. North China Electric Power, 2014, (4): 8-11.
［12］刘正刚, 杜广生, 刘丽萍. 动量式气体流量计内部流场特性与测量性能研究［J］. 计量学报, 2019, 40 (1): 124-129.
Liu Z G, Du G S, Liu L P. Study on Internal Flow Field and Measurement Performance of Momentum Gas Flowmeter ［J］. Acta Metrologica Sinica, 2019, 40 (1): 124-129.
［13］李红雷,李颖,姚周飞, 等. 公路隧道中敷设电力电缆的温度场仿真研究［J］. 计算机仿真, 2019,36 (2): 59-62.
Li H L, Li Y, Yao Z F, et al. Simulation of Thermal Field of Power Cable Installed in Traffic Tunnel［J］. Computer Simulation, 2019, 36(2): 59-62.
［14］唐科, 文武, 阮江军, 等. 基于有限元法的单芯电缆温度场仿真研究［J］. 武汉大学学报 (工学版), 2018, 51(9): 811-816.
Tang K, Wen W, Ruan J J, et al. Temperature field simulation of single core cable based on FEM ［J］. Engineering Journal of Wuhan University, 2018,51 (9): 811-816.
［15］张智辉, 唐兴佳, 陈泽铭, 等. 排管电缆群布置方式的联合优化方法研究［J］. 电测与仪表,2020,57 (15): 8-13.
Zhang Z H, Tang X J, Chen Z M, et al. Research on joint optimization method for layout of pipeline cables ［J］. Electrical Measurement & Instrumentation, 2020,57 (15): 8-13.
［16］李萌, 牛胜锁, 刘玉芹, 等. 基于多场耦合模型的海底电缆载流量和温度场计算研究［J］. 电测与仪表,2018, 55(8): 12-16,23.
Li M, Niu S S, Liu Y Q, et al. Calculation of temperature distribution and ampacity for submarine cables based on multi-physics field coupling model ［J］. Electrical Measurement & Instrumentation, 2018,55 (8): 12-16,23.
［17］牛海清, 郭少锋, 余佳. 复杂敷设输电电缆线路载流量瓶颈的时空特性［J］. 南方电网技术, 2018, 12(5): 44-50.
Niu H Q, Guo S F, Yu J. Time-Space Characteristics of Current-Carrying Capacity Bottleneck of Complicatedly Laid Transmission Cable Line ［J］. Southern Power System Technology, 2018, 12(5): 44-50.
［18］焦阳. 电力电缆温度场仿真及在线监测系统研究［D］. 重庆: 重庆大学,2016.
［19］杨宁. 高压电力电缆输送能力的计算研究［D］. 吉林: 东北电力大学,2019.
［20］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 G, Wang P Y, Zhou F, et al. Optimization on the Insulating Layer of Transient Thermal Circuit Model of Power Cable ［J］. High Voltage Engineering, 2018,44 (5): 1549-1556.
［21］刘喆, 张福元, 宋超凡, 等. 测温元件加工及安装对喷嘴标准装置校准数据的影响分析［J］. 计量学报,2019, 40(6A): 145-149.
Liu Z, Zhang F Y, Song C F, et al. Analysis of the Influence of the Size and Installation for Temperature Measuring Elements on the Calibration of CFV Nozzle Standard ［J］. Acta Metrologica Sinica, 2019, 40 (6A): 145-149.
［22］付荣荣,李朋,刘冲,等. 基于线性判别分析的决策融合脑电意识动态分类［J］.计量学报, 2022, 43(5): 688-695.
Fu R R,Li P,Liu C,et al. Dynamic Motor Imagery Classification with Decision Fusion Based on Linear Discriminant Analysis. Acta Metrologica Sinica, 2022, 43(5): 688-695.