模拟串口通信在配网无通道故障检测中的应用

分析总结了目前国内配电自动化技术的2种故障检测实现方式，即有通道和无通道的故障检测技术，讨论了其优缺点，在此基础上根据配电自动化技术的发展方向和趋势，提出了一种故障检测不需要通信系统参与的，基于配电线路故障电压检测的新型FTU装置实现方案。在此方案中，为实现在无后备蓄电池的情况下完成故障电压检测，采用PIC微功耗单片机和具有强大数据处理功能的DSP芯片构成双CPU系统．为实现双CPU之间的数据交换，首次采用DSP芯片的普通I／O口来模拟串口（UART），从而实现与PIC单片机之间的异步串行通信．此新型FTU装置通过了静态和动态模拟实验及其它相关测试，满足设计要求

Application of Serial Ports Simulation in a Non-communication Fault Detection Device of Distribution Networks

This paper summarizes two kinds of fault detection techniques for distribution automation, that is with and without communication in fault detection, and then analyzes their merits and shortcomings. Moreover, according to the development tendency of distribution automation techniques, this paper presents an approach, through which the noncommunication FTU devices can detect transient fault voltage of distribution systems effectually. To detect transient fault voltage without standby batteries, the PIC Single Chip microcomputer with low power consumption and DSP chip with powerful data processing capabilities are adopted to form a dual CPU system. To realize the communication between the two CPUs, the general I/O port,s of the DSP chip are firstly used to simulate the UART communication of the serial ports and communicate with the PIC Single Chip microcomputer. The novel FTU devices based on this approach are tested in static and dynamic simulation experiments, the results are satisfied.