摘要
基于配电网的自动抄表技术能够大大提高电力部门的工作效率，由于载波抄表使用的载波频率属于中频范围，该技术应用于配电网络必然存在信号衰减大、抗干扰能力差、信号不能自动跨过变压器台区等缺点。 脉动控制抄表技术为信号在不同的电压等级传输提供了很好的思路。工频通信抄表技术采用过零调制及数字差分接收技术，信号的频带位于200～600Hz之间，该信号可自动跨过配电变压器完成数据的半双工交换，这种技术信号抗干扰能力强、传输距离远。
：The technology of auto－meter reading AMR on distribute power line can greatly enhance the efficiency of electric power company． Because the frequency of Power line carrier belongs to mid－frequency, AMR based on that has disadvantage of high signal attenuation, bad anti－disturbance capability． the signal cannot automatically overpass transformer．Ripple control AMR afforded a good idea for signal transmission over two different voltage grades．Power frequency communication AMR adopts the technique of zero crossing modulation and the means of digital differential demodulation． The signal can easily stride over distribution transformer for the signal＇s frequency band is between 200～600Hz．Signal of this technology has a better performance of anti－interference． At the same time, the signal can be sent over a long distance．
出处
《电测与仪表》
北大核心
2001年第4期13-15,48,共4页
Electrical Measurement & Instrumentation
关键词
载波抄表
扩频技术
脉动控制
工频通信抄表
电度表
配电网
：AMR based on power line carrie；technique of spread spectrum；ripple control；AMR based on power frequency communication
