基于多时钟源的时间同步系统设计与应用  

Design and application of time synchronization system based on multi-sources timing

作　　者：许保落 张道农[2] 袁文广[1] 邓星星 刘同军[1] 于跃海[4] 

机构地区：[1]积成电子股份有限公司,山东济南250100 [2]华北电力设计院工程有限公司,北京100120 [3]武汉中元华电科技股份有限公司,湖北武汉430223 [4]国网电力科学研究院,江苏南京210061

出　　处：《电力科学与技术学报》2011年第3期25-29,共5页Journal of Electric Power Science And Technology

基　　金：国家火炬计划(2010GH011163)

摘　　要：根据电力系统时间同步技术规范,基于高稳晶振,设计了一款可同步北斗、GPS、IRIG-B码多时钟源的时间同步系统,电力行业应用表明该系统时间同步精度优于±1us,守时精度优于1us/min,能确保在丧失外部同步源时的守时精度,满足电网安全、稳定运行要求.According to the power system time synchronization technology criterions,based on the theory of crystal with high stability,a time synchronization system which coordinates GPS,Bei-dou and IRIG-B sync signal,is presented in this paper.The technology can improve the safety and stability of power grid.And a high-stability crystal oscillator has been used to achieve high timekeeping precision in the case of the loss of external time synchronization sources.The time synchronization accuracy of the system is improved up to ±1 us and punctual accuracy is better than 1 us/min.The system satisfies the technical requirements for electrical power system time synchronization,which has practical application value.

关 键 词：多时钟源对时 GPS 北斗 时间同步系统 

分 类 号：TN919.34[电子电信—通信与信息系统]