架空配电线和电力屏蔽电缆的传输特性测量与分析

Measurement and analysis of transmission characteristics on overhead distribution line and shielded cable

中压配电线是广泛存在的资源，利用中压配电线采实现数据通信对配电自动化及公用通信是最经济、最便捷和最有效的方式。为了评价中压配电线作为通信媒体的传输特性，文章对位于南京市郊的一条中压10kV配电线路进行了现场测量，对100～450kHz频率范围内的线路阻抗、噪声及传输衰耗特性进行了系统地分析研究，并且利用计算机对测量的大量数据进行了统计分析，给出了一些具有价值的结论，讨论了其对宽带数字载波通信的影响。

Because the medium voltage distribution line is an abroad existing resource, to use it as a communication medium of the distribution automation system and the public communication network is the most economical, the most convenient and the most effective way if compared to other systems. In order to assess the transmission characteristics of the medium voltage distribution line in a frequency band from 100 to 450 kHz, the line impedance, noise transfer function of the medium voltage distribution line which is in the suburb of Nanjing were measured, and the results of statistical analysis have been achieved for the large amount of the measured data. Furthermore the effect of the results on broadband digital carrier communication is discussed in this paper.