Earth Return Impedance and Admittance of Overhead Line-Underground Cable Systems  

作　　者：Qi Lei Bai Shuhua Yuan Hui Cui Xiang 

机构地区：[1]State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University

出　　处：《Electricity》2013年第1期53-53,共1页电气（英文版）

摘　　要：As China's economy continues to grow and energy demand continues to rise, the scale of power transmission lines and buried pipelines is expanding rapidly. The problems of over-voltage protection and electromagnetic compatibility within and between overhead lines and underground cables become increasingly prominent. The impedance and admittance parameters of multi conductor systems consisting of overhead lines, underground cablesAs China＇s economy continues to grow and energy demand continues to rise, the scale of power transmission lines and buried pipelines is expanding rapidly. The problems of over-voltage protection and electromagnetic compatibility within and between overhead lines and underground cables become increasingly prominent. The impedance and admittance parameters of multi conductor systems con- sisting of overhead lines, underground cables and pipelines are of particular importance for the study on overvoltage protection and electromagnetic compatibility within and between systems. Some researches show that the Iossy earth is of primary importance on the accuracy of the computation of impedance and admittance.

关 键 词：架空线路 电缆系统 导纳 阻抗 地球 过电压保护 返回 电磁兼容 

分 类 号：TM726.3[电气工程—电力系统及自动化] TN943.6[电子电信—信号与信息处理]