摘要
高压单芯电缆的结构会改变其传输线参数,常用的解析模型均认为电缆护套为平滑结构。利用有限元法研究了电缆皱纹铝护套结构给传输线参数带来的影响。文章阐述了电缆传输线参数的基本概念以及通过有限元法进行仿真计算的过程,针对平滑铝护套、无重力影响的皱纹铝护套以及重力影响下的皱纹铝护套电缆结构进行了传输线参数对比计算,计算结果表明皱纹结构增大了特征阻抗和衰减,降低了传播速度,而重力影响下的皱纹结构对参数影响更显著。
The structure of HV single core cable will change the transmission line parameters of high-voltage single-core cable. Common analytical models consider the sheath as a smooth layer. The influence of cable corrugated aluminum sheath on transmission line parameters is studied by using finite element method. The paper expounds the basic concept of cable transmission line parameters and the simulation calculation process by finite element method. The transmission line parameters are calculated and compared among smooth aluminum sheath,corrugated aluminum sheath without gravity influence and corrugated aluminum sheath structure with the influence of gravity. The calculation results show that the corrugated structure increases the characteristic impedance and attenuation,and reduces the propagation speed,while the corrugated structure along with gravity has a significant effect on the parameters.
作者
李岩
杨秀明
刘云鹏
LI Yan;YANG Xiuming;LIU Yunpeng(Department of Electrical Engineering,North China Electric Power University(Baoding),Baoding,Hebei 071003,China;Department of Electrical Engineering,The University of Sheffield,Sheffield S102TN,UK;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)
出处
《南方电网技术》
CSCD
北大核心
2020年第6期59-63,70,共6页
Southern Power System Technology
基金
中央高校基本科研业务费专项资金资助(2018MS081)。
关键词
高压电缆
铝护套
有限元法
重力
传输线参数
high voltage cable
aluminum sheath
finite element method
gravity
transmission line parameter
