配电系统对双向工频通信上行信号频谱的影响  

Effects of distribution system on the outbound spectrum of TWACS

作　　者：刘赫[1] 全玉生[1] 李文[1] 李建歧 

机构地区：[1]华北电力大学高电压与电磁兼容北京市重点实验室,北京102206 [2]中国电力科学院通信所,北京100192

出　　处：《电力系统通信》2009年第12期21-24,共4页Telecommunications for Electric Power System

摘　　要：介绍了我国配网的主要设备和负载对双向工频通信远离配变处上行信号频率特性的影响,包括配电变压器、配电电缆的横截面积和长度以及负载系数;研究了上行调制回路的截止频率与配变容量、配电电缆的横截面积、配电电缆的长度和负载系数的关系,提出了远配变处上行信号调制回路的截止频率和频率特性主要取决配电电缆的横截面积和配变容量。针对我国配网的一般情况,给出了上行调制信号的截止频率的通用曲线,使上行调制回路的信号分析、处理和控制十分简单方便。This paper introduces the effects of the main equipments and loads in distribution network on TWACS（Twoway Power Frequency Automatic Communication System）,including the factors of the capacity of transformer,the length and cross-section area of the cable and the load coefficient.It discusses the relationship between the cut-off frequency and capacity of distribution transformer,the length and cross-section area of the cable as well as the load coefficient.The cut-off frequency and the spectrum are mainly de...

关 键 词：双向工频通信 配电网 上行信号 

分 类 号：TN915.853[电子电信—通信与信息系统]