国网北京大兴供电公司智能抄表终端的研究与设计

发布时间：2019-05-28 13:53

【摘要】：进入新世纪以来,“一户一表”制度已经大力开展,几何级增长的电表数量对抄表工人产生了强大的压力。北京地区正在大规模推进智能表更换工作,不久以后,所有的用电客户将全部使用智能表。新型的智能的抄表系统已经建立起来,电力公司通过远程抄表实现对表计的实时监控。然而新的抄表系统能否保证抄表成功率,确保电力公司的管理效率,保障电力用户的合法权益是一个大家普遍关注的问题。现阶段智能抄表系统,数据传输主要通过GPRS (2G通信),将表计数据传送至采集主站。但由于GPRS通信带宽较窄、速率较慢、稳定性较差、抗干扰能力弱,致使出现数据出现丢包、集中器频繁掉线、无法连接上网等问题。基于以上问题,本文研究一种新型智能抄表系统,该系统核心为基于ARM和linux的低压集抄智能采集终端,本文首先提出了多规约并行通信、自我诊断及修复、自动搜表、远程升级及断电续传、以及无线4G通讯等终端核心创新技术的总体方案与实现。其次,本文对低压集抄智能采集终端的系统设计与软硬件设计进行了详细讨论,对其各重要功能模块、嵌入式linux系统设计及软件流程进行了重点说明,最后,本文结合终端与主站的通讯实例以及现场运行案例,对所研究的新型智能抄表系统有效性进行了说明。最后的测试结果表明,该新型智能抄表系统所具备的并行通信、自动搜表、自我诊断以及远程升级等技术,可以有效提高终端接入系统的效率、增强终端的运行可靠性、降低人工维护成本,而代替了传统GPRS(2G)的4G通讯技术,可以使终端更加快速可靠地传输抄表数据,从而提高整个抄表系统的抄表实时性。为解决大兴地区抄表成功率低的问题,提供了很好的解决方案。
[Abstract]:Since the beginning of the new century, the "one household, one meter" system has been vigorously carried out, and the geometric increase in the number of meters has put great pressure on meter reading workers. Beijing is pushing ahead with the replacement of smart meters on a large scale, and all customers will use smart meters in the near future. A new intelligent meter reading system has been established, and the power company realizes the real-time monitoring of the meter through remote meter reading. However, whether the new meter reading system can ensure the success rate of meter reading, ensure the management efficiency of power companies, and protect the legitimate rights and interests of power users is a common concern. At present, the intelligent meter reading system, the data transmission is mainly through GPRS (2G communication), the meter data is transmitted to the acquisition main station. However, due to the narrow bandwidth, slow speed, poor stability and weak anti-interference ability of GPRS communication, there are some problems, such as packet loss, frequent offline concentrator, unable to connect to the Internet, and so on. Based on the above problems, this paper studies a new intelligent meter reading system, the core of which is a low voltage centralized reading intelligent acquisition terminal based on ARM and linux. Firstly, this paper proposes multi-protocol parallel communication, self-diagnosis and repair, automatic table search. Remote upgrade and power outage, as well as wireless 4G communication and other terminal core innovation technology overall scheme and implementation. Secondly, this paper discusses the system design, software and hardware design of low voltage collection intelligent acquisition terminal in detail, and focuses on its important functional modules, embedded linux system design and software flow chart. Finally, Based on the communication example between the terminal and the main station and the field operation case, the effectiveness of the new intelligent meter reading system is explained in this paper. The final test results show that the parallel communication, automatic meter search, self-diagnosis and remote upgrade of the new intelligent meter reading system can effectively improve the efficiency of the terminal access system and enhance the operation reliability of the terminal. Reducing the cost of manual maintenance and replacing the traditional 4G communication technology of GPRS (2G) can make the terminal transmit meter reading data more quickly and reliably, thus improving the real-time reading performance of the whole meter reading system. In order to solve the problem of low success rate of meter reading in Daxing area, a good solution is provided.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM933.4

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