摘要
阐述了授时时钟在变电站自动化系统中对自动化装置授时的基本原理，提出了利用全球定位系统GPS（Global Positioning System）接收器与AT89C55单片机系统实现变电站授时时钟的方案，给出了时钟的软、硬件设计，并详细介绍了装置内部的全球定位系统秒脉冲（PPS）信号的软件防干扰措施及串口通信上的提前发送技术。
This paper introduces the principle of the service GPS time clock provides to automation in automation system of substation, and proposes the program to apply the time clock to substation by using GPS receiver and T89C55 SCM system. The design of the software and hardware for the time clock is also presented, and in detail the measures are introduced to pre- vent being interfered the soft ware of PPS signal within the device and the techniques to send in advance on the serial communi- cation are also illustrated.
出处
《山西电力》
2010年第2期36-38,共3页
Shanxi Electric Power
