低压电力线载波通信中信号传输特性分析  

SIGNAL TRANSMISSION CHARACTERISTIC ANALYSISIN LOW VOLTAGE POWER LINE CARRIER COMMUNICATION

作　　者：高锋[1] 董亚波 

机构地区：[1]浙江大学电机系,杭州310027

出　　处：《电力系统自动化》2000年第7期36-40,共5页Automation of Electric Power Systems

摘　　要：随着供电管理自动化的发展 ,低压电力线载波通信的重要性和优势日益体现出来 ,因此 ,有必要对信号在低压电力线中的传输特性进行分析。文中通过对各种实验数据的比较分析 ,认为电力线的输入阻抗较小 ,对信号的衰减强 ,干扰大 ,且具有很强的时变性 ,难以提出一个准确的数学模型。但是 ,只要采用合适的技术 ,仍然能使低压电力线载波通信达到实用化的要求。With the development of power distribution management automation, the importance and benefit of the low voltagepower line carrier communication has been more and more convinced. So it is necessary to analyze the signal transmissioncharacteristics in low voltage power line. Through comparing and analyzing some experimental data, this paper puts forwardthat power line has very low input impedance, and it attenuates and jams the signal greatly. Because all these characteristicsare time--variable, it's very hard to establish a precise mathematical model. However, using proper technologies, low voltagepower line carrier communication system can meet the requirement of application.

关 键 词：低压电力线 载波通信 阻抗 衰减 信号传输 

分 类 号：TM73[电气工程—电力系统及自动化]