低压电力线载波信道测试装置设计  

Design of a testing device for low voltage power line carrier communication channel

作　　者：王立城 胡科军 霍超 李建岐[2] 

机构地区：[1]北京南瑞智芯微电子科技有限公司,北京100192 [2]中国电力科学研究院通信技术研究所,北京100085

出　　处：《电测与仪表》2015年第10期44-49,77,共7页Electrical Measurement & Instrumentation

摘　　要：电力线载波通信在居民抄表、路灯控制等领域广泛应用,然而由于电力线不是专用信道,且受用电设备、电力负荷、线路结构等影响较大,其传输特性在时域、频域上具有多变性,直接影响到电力载波通信产品的业务承载能力和应用效果。文中研制了一种便携化低压电力线载波通信信道测试装置,实现了电力线载波信道的阻抗、衰减和噪声三个重要信道参量的在线测量,并可通过即时分析软件实时掌握载波信道的变化特征,对电力线通信产品的技术实现和工程化应用具有重要意义。Power line carrier communication is widely used in automatic meter reading and street lamp control etc. However, the power line is not a dedicated communication channel, and influenced by the electrical equipment,power load,grid structure and other factors largely.The channel transmission characteristics vary in time domain and fre-quency domain, which directly influence the business carrying capacity and application effect of power communication products.This paper introduces a portable low voltage power line carrier communication channel testing device, which can realize the online measurement of noise, impedance and attenuation of the power line carrier channel, and can get the variation characteristics of carrier channel through the real-time analysis software.The device is of great signifi-cance to the technology realization and engineering application of power line communication products.

关 键 词：电力线载波 信道测试 噪声 衰减 阻抗 

分 类 号：TM73[电气工程—电力系统及自动化]