摘要
建立了一种考虑感性耦合与阻性耦合影响时 ,铠装电缆套加装金属管道后电磁屏蔽计算的通用模型。该模型是在场路结合的基础上 ,对导体采用线性化单元离散 ,建立相应的方程组 ,求得导体中的电流分布 ,从而可对地下通信电缆系统进行电磁屏蔽的近似计算。
A universal model of telecommunication cable surrounded by the buried metal pipeline for calculating their current distribution and shielding effects is presented, which takes the inductive coupling and resistive coupling with each other in the presence of a uniform half space conductive medium(earth) into account. The model is based on the combination of the circuit theory and the electromagnetic field theory. By means of dividing the conductor element using a linear interpolation method, a discrete equation group is constructed to solve the current distribution and then calculate the shielding effect of the underground telecommunication cable system. In fact, the model developed can be generalized easily to solve the current distribution of the multi conductor system. The validation of the model is verified by a practical problem case.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2000年第4期44-49,共6页
Proceedings of the CSEE
关键词
铠装通信电缆
电磁屏蔽
计算
金属管道
power line
telecommunication cable
electromagnetic shielding
dangerous influence
universal model
