The clock signal provided by Global Positioning System(GPS)is widely used in electric power system for relay protection, SOE (Sequence of Events), fault locating, synchronous sampling and so on.
GPS同步时钟信号已在电力系统的继电保护、事件顺序记录、故障测距、同步采样等诸多领域获得重要运用。
Using the clock synchronization, synchronous sampling could be realized on an asynchronous control network.
为了能在异步控制网络上实现采样同步，可采用时钟同步方法。
This thesis selects model GN-80 GPS receiver and SCM to design the sampling device. The high accurate time service is used to synchronize the sample clock signal to realize synchronous sampling.
选用GN-80型GPS接收设备和单片微机进行电力系统状态变量同步采集终端的硬件设计，利用GPS的精确授时作为其同步时钟控制采样脉冲来实现同步采样。
应用推荐