具有以太网接口的变电站监控系统设计

Design of Transformer Substation Monitoring System with Ethernet Interface

本文介绍了具有工业以太网接口的变电站监控系统的设计与实现。提出了双CPU结构的变电站监控系统,数字信号处理器TMS320VC5402作为主CPU,用于以太网接口的控制管理,以及定时向上位计算机发送数据,同时读取下位数字信号处理器采集的数据。数字信号处理器TMS320LF2407A作为从CPU,用于键盘、显示的控制,开关量、脉冲量、电网频率、模拟量等数据的采集以及模拟量和继电器的输出控制。系统软件支持MAC,TCP/IP等协议规范,从而实现了监控系统的网络化。给出了数字信号处理器TMS320VC5402与以太网控制器RTL8019AS的硬件设计及嵌入式TCP/IP协议的汇编程序设计。

This paper introduces the design and realization of transformer substation monitoring system with industrial Ethernet interface. A new type of transformer substation monitoring system structure with double CPU is proposed. In this system, the digital signal processor （DSP） TMS320VC5402, as the master CPU, is used to control and manage the Ethernet interface. At the same time, it reads data gathered by the lower DSP and transmits those data to the host computer in a certain time. DSP TMS320LF2407A acts as the slave CPU which carries out following tasks： processing keyboard input information, controlling data display, gathering various da- ta such as digital variables, pulse variables, power grid frequency and analog variables, and controlling the output of analog variables and relay. The system software supports MAC and TCP/IP protocols, so that the cyberization of monitoring system comes true. In addition, the hardware design between DSP TMS320VC5402 and Ethernet controller RTL8019AS and the software design of embedded TCP/IP is given in this paper.