隧道电缆稳态温升快速计算方法研究  

Study on Fast Calculation Method for Steady Temperature Rise of Tunnel Cables

作　　者：傅晨钊 司文荣 祝令瑜[2] 李红雷 姚周飞 FU Chenzhao;SI Wenrong;ZHU Lingyu;LI Honglei;YAO Zhoufei(State Grid Shanghai Electrical Power Research Institute,Shanghai 200437,China;Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]西安交通大学,西安710049

出　　处：《高压电器》2021年第1期75-81,共7页High Voltage Apparatus

摘　　要：为提高隧道电缆稳态温升的计算效率,支撑运行人员负荷实时调整,文中提出了一种隧道电缆群稳态温升的快速算法。首先以单根电缆为例,通过对多工况稳态温升有限元计算结果的分析,提出了隧道内“对流散热-对流热阻”的量化规律,进而基于此提出了相应快速算法,然后将其扩展适用于多根电缆,并以三回垂直布置的电缆为例进行了验证。验证结果表明:文中所提出的快速算法便捷准确,可以满足运行需要,并为后续暂态温升快速算法的研究创造了条件。In this paper,a kind of fast algorithm for the steady temperature rise of tunnel cable groups with the aim of improving calculation efficiency of steady temperature rise of tunnel cables and supporting operator's real-time load adjustment.Firstly,a single piece of cable is taken as an example,the quantitative law of"convention heat dissipation-convection thermal resistance"in the tunnel is proposed throughout the analysis of definite element calcula・tion result of multiple condition steady temperature rise and,on this basis,the corresponding fast algorithm is proposed.Then,the algorithm is expanded to be applicable for the multiple pieces of cables and the cable with triple-circuit vertical layout is verified as an example.It is shown by the verification result that the fast algorithm proposed in this paper is simple and accurate,can meet operation need and create conditions for the study of fast algorithm of subsequent transient temperature rise.

关 键 词：隧道电缆 稳态温升 快速算法 

分 类 号：TM75[电气工程—电力系统及自动化]