基于GPRS的低压配电网实时管理系统

Real-time management system of low-voltage distribution network based on GPRS

为适应当前配电变压器自动化和远程监测的需要,设计了基于通用无线分组业务(GPRS)网络的配电变压器自动化实时管理系统。该系统分为终端、主站和通信服务3部分。终端部分采用自主设计的软、硬件系统,应用80C51系列微处理器W77E58B单片机及现有的GPRS网络,通过Delphi的消息机制实现了数据的远程无线传输和计算机集中化管理功能。监控终端与多功能电能表的通信采用DL/T645-1997规约,通信方式采用主-从结构的半双工方式;监控终端使用M300A型GPRS模块实现GPRS与终端的数据传输。管理系统软件基于Windows平台,在SQL-Server+Delphi的开发环境下,实现了对配电变压器工作参数的实时数据采集并对各变压器工作数据进行统计、分析,形成各种曲线、报表、分类汇总。

For the remote monitoring and automation of distribution transformer, a GPRS-based real-time management system is designed, which includes terminal, master station and communication service. The SW and HW system of terminal is developed based on W77E58B of 80C51 series microprocessor and GPRS network and the centralized management and wireless remote data transmission are realized using the Delphi news mechanism. DL/T645-1997 protocol is adopted in the master-slave semiduplex data communication between terminal and multi-function energy meter, and the GPRS module of M300A is used to realize the data communication between terminal and GPRS network. The SW of management system is based on Windows platform and the real-time operational parameters of distribution transformer are acquired and processed for statistics, analysis, curves, logs and classification under the SQL-Serverq-Delphi environment.