基于Modbus/TCP的配电网自动化远方终端设计

Data Transfer Unit Based on Modbus/TCP for Power Distribution System

摘要:

配电自动化系统的不断改造和提升,是建立在配电自动化终端设备不断发展的基础上。配电自动化远方终端(DTU)装置是配电自动化系统中的基础设备。从数据通信稳定的角度出发提出了将Modbus/TCP通信协议与STM32微处理器相结合的设计方案。介绍了系统的总体构架和Modbus/TCP的通信协议内容,设计了以太网电路接口。在嵌入式实时操作系统μC/OS-II上实现了基于Modbus/TCP的通信协议客户机端和服务器端的通信。实验结果表明,该配电自动化远方终端可靠的实现了数据信息的稳定传输。

Abstract:

The continuous reformation and upgrade of power distribution automation system are based on the constant development of its terminal equipment. DTU is the basic device in the power distribution automation system. This paper presents a design combined Modbus/TCP communication protocol and STM32 microprocessor from the perspective of data communication stability. This paper has introduced the overall framework of the system and the contents of Modbus/TCP communication protocol, and designed the Ethernet circuit interface. Under the embedded system, the operating system μC/OS-II achieved the data communication between the client and server based on Modbus/TCP communication protocol. The experiment shows that this Data Transfer Unit can reach the stability and reliability of data and information transmission.