高速电力线载波技术在电力集抄业务中的研究及应用

Research and application of high-speed power line carrier technology in electric power reading service

我国经济的快速发展和城市建设的逐步加快,带动了我国电力工业的快速发展。随着新型智能电网的发展目标,供电公司常用的门到门抄表方法已不再能满足居民的用电需求和企业的工业用电需求。就电力线载波信道而言,影响发射率的因素是信号衰减和同信道干扰。信号衰减问题可以通过多点联网或中继器安装解决。同频道干扰问题难以解决且耗时,严重限制了发射率的效率。每个电力供应商必须开发一个集中式抄表系统,该系统可以同时收集其管辖范围内所有电力用户的电能使用数据。为提高集中抄表系统运行的可靠性,基于低压电力线传播信号原理建立了低压高速电力线载波集中抄表系统,实现了整个低压输电线路的安全稳定传输。测试结果表明,该系统在长距离传输中仍能保持良好的传输效率。

After the reform and opening up,the rapid development of China′s economy and the gradual acceleration of urban construction have led to the rapid development of China′s power industry.With the development goal of the new smart grid,the door-to-door meter reading method commonly used by power supply companies can no longer meet the electricity demand of residents and the industrial electricity demand of enterprises.As far as the power line carrier channel is concerned,the factors affecting the emissivity are signal attenuation and co-channel interference.Signal attenuation can be solved by multipoint networking or repeater installation.However,the problem of co-channel interference is difficult to solve and time consuming,which seriously limits the efficiency of emissivity.Therefore,each power supplier must develop a centralized meter reading system,which can collect the power usage data of all power users within its jurisdiction at the same time.In order to improve the reliability of centralized meter reading system,a centralized meter reading system based on low-voltage and high-speed power line carrier was established based on the principle of low-voltage power line transmission signal,which realizes the safe and stable transmission of the whole low-voltage transmission line.Test results showed that the system can still maintain good transmission efficiency in long-distance transmission.