基于ARM Cortex-M4内核和CAN总线的智能馈线终端

摘要

Aiming at the requirement of the automation on handling line fault in distribution network, an intelligent FTU based on STM32F407 embedded processor and CAN bus was designed.The FTU adopted the distributed control structure, including measurement and control, communication, protection, alternating and GUI modules, mastered and slaved CPUs can collaborate and its independent modules were connected via CAN bus to achieve the data communication.The FTU using Fourier AC sampling algorithm was run by the μC/OS-Ⅲ real-time operating system, which can complete telemetry, remote communication, remote control, data acquisition, fault detection and other functions by using Fourier series AC sampling algorithm.It plays a vital role in further improving the feeder terminal unit integrated, intelligent and comprehensive level.%针对配网馈线终端自主处理线路故障的要求,设计了基于STM32F407嵌入式处理器和CAN总线的智能馈线终端单元(FTU),该FTU采用分布式控制结构,具体包括测控、通信、保护、交流和显示模块,主从CPU协同合作,各模块间通过CAN总线连接实现数据通信.软件平台上搭建μC/OS-Ⅲ实时操作系统,采用傅里叶级数交流采样算法,可完成遥测、遥信、遥控、光纤通信、故障检测等功能,对进一步提高馈线终端设备集成化、智能化和综合化水平有重要作用.