智能电网下低压电力线通信的特性研究

提出智能电网环境下的通信方式,并说明低压电力线通信的优点。研究分析了低压电力线通信的时变性、深衰减、多径性、电磁干扰等特点。在分析电力载波通信(power line communication,PLC)原理及特点的基础上,提出利用正交频分复用(orthogonal frequency division multiplexing,OFDM)技术来提高系统的传输性能。对智能电网环境下低压电力线通信技术的应用进行展望,并列举低压电力线通信在超远程抄表、网络连接等方面的应用。

Study on Communication Characteristic of Low Voltage Electric Power Lines in Smart Grid

This paper proposes a kind of communication way under the background of smart grid and explains merits of low voltage electric power line communication. It studies and analyzes time-varying characteristic, deep attenuation, multipath characteristic and electromagnetic interference of low voltage electric power line communication. On the basis of analyzing power line communication principles and features, it proposes to use orthogonal frequency division multiplexing technology to improve transmission performance of the system. In addition, it looks into distance application of low voltage electric power line communication technology under the background of smart grid and enumerates application cases of low voltage e- lectric power line communication in extra long distance meter reading, network connection, and so on.