基于PTP的时间同步系统可用性分析及优化策略  

Availability Analysis and Optimization Strategy for Time Synchronization System Based on Precision Timing Protocol

作　　者：孙晓明[1] 孙中尉[1] 牛得存[1] SUN Xiao-ming;SUN Zhong-wei;NIU De-cun(Shandong Electric Power Engineering Consulting Institute Corp., Ltd, Jinan 250013, China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013

出　　处：《电工电气》2017年第4期61-67,共7页Electrotechnics Electric

摘　　要：基于网络的IEEE 1588时间同步协议(PTP),是适应未来智能变电站关键应用要求的精确时间同步方式。提出了一种利用故障树分析对PTP可靠性进行量化评估的方法,对IEEE PC37.238推荐的PTP网络结构可用性进行理论计算,分析影响PTP对时可靠性的关键因素,对已建系统可靠性进行量化评估,并提出了PTP网络时延和PTP对时网络的架构优化策略,提高了IEEE 1588时间同步系统的可用性。The IEEE1588precision timing protocol(PTP)is the recommended means of providing precise timing synchronization modefor the key application of future substations.This paper presented a kind of quantitative assessment method of PTP reliability using fault treeanalysis,carried out theoretical calculation for the usability of PTP network structure recommended by IEEE PC37.238,analyzed the keyfactors impacting on PTP precision timing reliability and carried out quantitative assessment for the built system reliability.The PTP networkdelay and the framework optimizing strategy of PTP precise timing network were raised to improve the availability of IEEE1588time synchronizationsystem.

关 键 词：时间同步 IEEE1588 可靠性 故障树分析 网络拓扑 

分 类 号：TM63[电气工程—电力系统及自动化] TM76