一种应用于行波测距装置的高精度时间同步技术  

A highly accurate time synchronization technology applied to the traveling wave distance measuring device

作　　者：张可[1,2] 尹涛[1,2] 刘群[1,2] 王皓[1,2] 程志友[3] 

机构地区：[1]南瑞集团公司(国网电力科学研究院),南京211000 [2]安徽南瑞继远电网技术有限公司,合肥230088 [3]安徽大学,合肥230039

出　　处：《工业仪表与自动化装置》2017年第4期101-104,共4页Industrial Instrumentation & Automation

摘　　要：基于双端测距方法的行波测距装置对时间同步性能提出了很高的要求,研究高精度的时间同步技术是行波测距装置应用的切实需求。该文从GPS信号的授时精度、高精度恒温晶振修正特性、守时及对时算法逻辑等方面进行深入分析,结合行波测距装置的应用需求,探讨了基于GPS和恒温晶振的高精度时间同步技术的设计方法。在此基础上,提出了采用FPGA实现逻辑设计的工程设计方案,通过型式试验和装置现场实际运行表明,该技术满足了行波测距装置对时间同步的要求。Traveling wave ranging method based on the double end of dme puts forward high demands on time synchronization performance,the high precision of time synchronization technology is a traveling wave of dme application practical demand.In this paper,from the GPS signal timing accuracy,high precision constant temperature crystals fixed characteristics,punctuality and pair algorithm logic analysis etc.,combining with the traveling wave of dme application requirements,based on GPS and constant temperature of crystals is discussed the design method of high precision time synchronization technology.On this basis,this paper puts forward the logic is realized by using FPGA design of engineering design,through the type testing device and the actual operation shows that the technology can meet the travelling wave dme requirements of time synchronization.

关 键 词：行波测距装置 时间同步 GPS 恒温晶振 FPGA 

分 类 号：TM773[电气工程—电力系统及自动化]