基于电力线载波远程抄表系统
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收稿日期:2000-11-01作者简介:钟道昌(1965—),男,副教授,工学博士,主要研究电子检测及控制理论和技术。
文章编号:1000-8829(2001)10-0064-03基于RS485/422总线和电话线载波的电能表远程抄表系统Electricity Remote Mea surement System Ba sed on RS485/422Bus and Modems(山东科技大学机械电子工程学院,山东济南 250031) 钟道昌,姜丽华,张 蕾(滕州监狱发电厂,山东滕州 277500) 贾长祥摘要:介绍了几种常见的电能计量抄表网络,重点介绍了自行设计的基于RS485/422总线和电话线载波的电能表远程抄表系统,给出了提高电能计量微机网络可靠性的几个有效措施。
关键词:电能计量;RS485/422;远程抄表;可靠性中图分类号:TP274.4;TP873.2文献标识码:BAbstract :Some usual electric energy measurement sys 2tems are introduced.The design scheme of the electricity remote measurement system based on RS485/422bus and modems is introduced in detail.Some effective mea 2sures to enhance reliability of the system are given.K ey w ords :electric energy measurement ;RS485/422;remote measurement ;reliability 随着城镇居民住宅的日益增加和集中,电能计量、计价和统计的工作量越来越大,传统的电磁式电能表不仅因为电表本身损耗大而导致浪费大量电能,而且由于抄表工作量大而不能适应现代社会的需要。
第41卷第12期 2020年12月自动化仪表Vol .41 No . 12Dec . 2020PROCESS AUTOMATION INSTRUMENTATION低压电力线载波通信的远程抄表系统架构设计摘要: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、噪声干扰时变性强等特点,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。
关键词:低压电力线载波通信;远程抄表系统;用电信息采集系统;误码率;信号传输;数据通信;任务下发;智能电网 中图分类号:TH 702文献标志码:AD 0I : 10. 16086/j . cnki . issn 1000-0380. 2020030041Design of Remote Meter Reading System Architecturefor the Carrier Communication with Low Voltage Power LineY A N GJincheng 1 ,L I U H a i y a n g ' ,S H E N Li 1 ,W A N G L u 1, Z H A N G Z h e n y u a n 2, H U A N G D a r o n g 2A b stra c t : Compared with the traditional remote meter reading system based on RS -485 bus architecture,or wireless architecture such as G PRS,W iFi 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 m atching,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 lin e,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 . K ey w o rd s : Carrier communication with low-voltage power lin e ; Remote meter reading system ; Electricity information collection system ; Bit error rate ; Signal transmission ; Data communication ; Task distribution ; Smart grid近年来,物联网技术在电力相关领域中得到了广便的优势,已成为当前的研究热点[4—7]。