中压环网结构的电缆屏蔽层传输特性的测试与分析  

Testing and analysis on transmission characteristics of cable shielding layer in medium voltage ring network

作　　者：王坤[1] 汪晓岩[1] 蔡世龙[1] 

机构地区：[1]国网南京自动化研究院,江苏南京210003

出　　处：《电力系统通信》2007年第3期55-59,共5页Telecommunications for Electric Power System

摘　　要：利用电力电缆屏蔽层进行载波信号传输,已成为国内外相关机构的研究热点。文章介绍了一个典型的由8段电力电缆通过线路开关连接成的环网结构,并对其供电电缆屏蔽层信道的传输特性(阻抗、噪声、传输特性)进行了全面的测试。测试结果和试验统计数据显示,采用高频桥接的多级电缆屏蔽层信道的传输特性基本满足载波组网通信可靠性要求,可以作为载波通信的信道,为城市小区配电自动化系统的通信系统提供了一种廉价且方便的解决方案。Using the cable shielding layer of power cable as a communication medium to transmit carrier signals has become a hot topic for some research institutions at home and abroad. This paper takes a typical cable shielding layer of ring network structure connected with eight segments of electric cables by switches as an example, and its transmission characteristics（attenuation, impedance and noise） are measured. The results of statistical analysis indicate that the transmission characteristics of cable-shielding layer channel using many segments of power cables adopted by high frequency bridging can satisfy the requirement of communication relia- bility, it also provides a cost-effective and convenient solution for distribution network automatization system.

关 键 词：环网结构 电缆屏蔽层载波 电力线载波通信 高频桥接器 卡接式电感耦合器 

分 类 号：TM773[电气工程—电力系统及自动化]