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| 摘要: |
| 全球定位系统GPS(Global Positioning System)同步时钟装置已在变电站自动化系统中广泛应用。介绍了GPS同步时钟装置的结构及其功能。对串口通信校时和脉冲中断校时对校时精度的影响进行分析和比较，提出了一种综合校时方案。通过计数器构成毫秒级的计时单元．利用GPS同步时钟定时，应用在事件顺序记录SOE(Sequence Of Events)中。介绍了软件定时和硬件定时。 |
| 关键词: GPS时钟 校时 事件顺序记录 |
| DOI： |
| 分类号:TM764 |
| 基金项目: |
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| Time synchronization based on GPS clock |
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ZOU Hong-yan ZHENG Jian-yong
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| Abstract: |
| The GPS(Global Positioning System) is widely used in substation automation system. The structure and function of GPS synchronous clock device are introduced. Based on the synch accuracy analysis and comparison between serial communication mode and pulse signal mode,an integrative scheme is presented. SOE(Sequence Of Events) is realized in substation automation system by applying a millisecond timer and GPS synchronous clock. Both software sync and hardware sync are introduced. |
| Key words: GPS clock,time synchronization,sequence of events |
