一种新型馈线终端设备的研究

Research on FTU Based on CAN Bus and DSP

为解决配电网监测点分散、节点数量多、通信距离远等问题,设计出了一种基于CAN总线和DSP的馈线终端设备。馈线终端设备FTU采用内部集成CAN控制器的DSP芯片。为防止远距离CAN节点之间通信的衰减,系统中加入了CAN中继器。详细介绍了系统中各个模块的功能及硬件设计和软件设计流程图,该系统应用于馈线自动化中,具有可靠性高、实时性好、成本低等优点。

In order to solve the problems of Distribution network, such as scattered monitoring stations, multi-node and long communication distance, a new style FTU based on CAN bus and DSP is proposed. This kind of FTU, which is based on DSP chips, is internally integrated CAN controller. In order to prevent the long-distance attenuation of communication between CAN nodes, CAN repeaters is involved in the system. This paper introduces the functions of each module in the system, the flow chart of hardware design and software design. The application of this system to the feeder automation has advantages of high reliability, good real-time and low cost.