电力线载波通信信道建模技术综述

An overview of channel modeling methods for power-line communication

电力线载波通信(power line communication,PLC)技术是电力系统中应用广泛的重要通信手段。电力线信道模型的建立和电力线载波频率的优化对于在电力线上实现高速数据传输具有重要意义。首先简要介绍电力线信号传输基本理论,然后按照建模所需参数的获取方法进行分类,对各种电力线信道建模技术进行了综述。介绍各类建模技术的发展历程,并分析了各种技术的优缺点。最后提出一种基于图论法的电力线载波信道建模方法,分析了该方法应用于智能电网中压电力线载波通信的可行性。

Power-line communication（PLC） technology is an important communication method which has been widely used in power systems.Power line channel modeling and carrier frequency optimization are significant to the realization of high-speed data transmission over the power line.This paper starts with a brief introduction of the basic theories of signal transmission on power lines,and then an overview of power-line communication channel modeling methods together with the classification of existing modeling methods according to model parameters acquisition approaches is presented.The development process of each method is introduced,and it is followed by a detailed analysis of the advantages and disadvantages of each method.Finally,a channel model method of power line communication based on the graph theory is proposed,and its potential of being applied to smart grid medium-voltage power-line communication is studied.