基于低压电力信道衰减特性的建模仿真研究

Modeling and Simulation based Attenuation Characteristics of Low-Voltage Power Channel

现在许多机构都在探索研发自动抄表系统,利用它来取代陈旧的人工抄表工作。把电力线作为自动抄表系统的通信媒介是研发人员的首选。电力线作为数据传输通道,路线已经存在,不用重新铺设通信线路,但其连接很多用电设备,随机的接入和断开,使得把电力线作为抄表数据通道很困难。因此,要在电力线上通信,必须先分析建立低压信道模型,将低压电力线等效成FIR滤波器模型,并进行仿真。仿真结果表明,它能够很好地反映低压电力信道的衰减特性。

Now many institutions are engaged in exploring the development of automatic meter reading system, with it to replace the old manual meter reading work, Thus with power line as the first choice by R＆D personnel for communication medium of automatic meter reading sysytem. As a data transmission channel, line,it is necessary to firstly analyze and establish low-voltage channel model. In this paper, the low voltage power line is equivalent to FIR filter model. The simulation results indicate that the established model can well reflect the attenuation characteristics of low-voltage power channel.