摘要
现在很多电力研发部门都在尝试将低压电力线作为自动抄表系统的通信媒介。电力线传输数据优势明显,不用重新铺设通信线路,然而电力线又是电磁干扰进入设备和传出设备的媒介。自动抄表通信系统在低压电力线上工作时,会收到来自电力线上的电磁干扰(EMI),这将严重影响数据的传送和接收。因此,低压抄表系统作为一种弱电系统,在应用于低压电网上,它的电磁兼容性(EMC)设计是重要的和必须的。基于此,介绍了一种经济实用的方法,即在低压抄表和用户端之间串接一个扼流圈(噪声滤波器),使系统可以在所处的电磁环境中避免电磁干扰,可靠地工作。
Now a lot of power R&D departments are trying to use low voltage power line as the automatic meter reading system communication medium.Power line transmission data has obvious advantages without re-laying of communication lines,however,the power line is the electromagnetic interference into the equipment and outgoing media.When the automatic meter reading communication system works on the low-voltage power line,it will receive the electromagnetic interference(EMi)from the power line,which will seriously affect the transmission and acceptance of the data.Therefore,the low voltage meter reading system as a weak system,in the application of low voltage power grid,its electromagnetic compatibility(EMC)design is important and necessary.In this paper,an economic and practical method is presented,in which choke coil(a noise filter)is connected in series between the low voltage meter reading and the user terminal,so that the system can avoid electromagnetic interference and reliably work in the electromagnetic environment.
作者
张秀秀
Zhang Xiuxiu(The Department of Physics,Changzhi University,Changzhi Shanxi 046011,China)
出处
《山西电子技术》
2025年第4期110-112,共3页
Shanxi Electronic Technology
关键词
低压电力线
自动抄表系统
电磁干扰
扼流圈
low-voltage power line
automatic meter reading system
electromagnetic interference
choke coil
