低压电力线载波通信的远程抄表系统架构设计

Design of Remote Meter Reading System Architecture for the Carrier Communication with Low Voltage Power Line

相对于传统基于RS-485总线架构,以及GPRS、WiFi、Zigbee等无线架构的远程抄表系统而言,低压电力线载波通信的远程抄表系统具有成本低、大规模部署难度小、接人方便的优势,因此成为研究热点。但由于低压电力线信道具有阻抗匹配性差、信号衰减.大、噪声千扰时变性强等特点,信号在通信传输过程中容易产生较高的误码率,导致难以稳定、可靠地进行数据通信。为改善低压电力线载波通信传输过程中存在的上述问题,使用电信息采集系统能够更稳定、可靠地工作,对低压电力线信道特性进行了详细的分析。设计了低压电力线载波通信的用电信息采集系统架构。设计了低压电力线载波通信芯片并进行实测验证。经试验验证,该系统能够在能够降低误码率的同时提高任务下发过程中任务处理的并发性,对于智能电网等相关研究与应用具有借鉴意义。

Compared with the traditional remote meter reading system based on RS-485 bus architecture,or wireless architecture such as GPRS,WiFi and Zigbee,the remote meter reading system for the carrier communication with low-voltage power line has the advantages of low cost,small-scale deployment difficulty and convenient access.Therefore,it has become a research hotspot.However,due to the characteristics of low impedance power line channel,poor impedance matching,large signal attenuation and strong time variability while noise interference,the signal is prone to generate a high bit error rate during communication transmission,which makes it difficult to carry out stable and reliable data communication.In order to improve the above mentioned problems in the transmission process of carrier communication with low-voltage power line,the use of electrical information collection system can work more stably and reliably.The channel characteristics of the low-voltage power line are analyzed in detail,the architecture design of the power consumption information collection system for the carrier communication with low-voltage power line is completed,The carrier communication chip with low-voltage power line is designed and verified by actual measurement.It is verified by experiments that the system can reduce the bit error rate and improve the concurrency of task processing in the task delivery process,which has reference significance for smart grid and other related research and applications.