摘要
着重从低压电网的干扰源、线路阻抗与衰减特性入手,结合EN50065-1标准来分析适合低压电力线路阻抗和衰减特性的载波波段、发送功率门限值、以及信号调制方式,文章介绍了OFDM(正交频分复用)及扩频通讯的技术要点与实现方式,并将它与目前常用的低压电力载波通讯方式进行了初步对比和分析;最后概要介绍了兰吉尔的AMM系统功能及其应用。
This article focused on low-voltage power grids from the interference source, line impedance and attenuation characteristics, combining with EN50065-1 standard to analyze the suitable carrier-band, transmission power threshold, as well as signal modulation. The article introduced the key points of the OFDM （Orthogonal Frequency Division Multiplexing） , spread-spectrum communication techniques and implementation methods, and conducted a preliminary comparison and analysis with the current low-voltage power line carrier communications. Finally an overview of the LG AMM system and its application is described briefly.
出处
《电测与仪表》
北大核心
2009年第9期39-44,共6页
Electrical Measurement & Instrumentation
