摘要
对精确时钟同步协议(Procision Time Protocol,PTP)的工作原理、时钟模型、延时测量机制、传输协议栈、通信模式进行了深入分析研究。在协议分析的基础上,结合数字化变电站过程层网络的特点和时间同步要求,分析了PTP1588在数字化变电站过程层网络应用的关键点。总结了PTP1588协议的应用思路--PTP1588是一个通用的时间同步协议,对于一个特定应用,应根据此特定应用的网络特点和同步指标要求,在PTP1588协议中选取合适的机制和参数来构建此特定应用的PTP1588时间同步方案。
This paper analyzes deeply the work principle,the clock model,delay computation mechanism,transport protocol stack,and the communication mode of precision clock synchronization protocol（Procision Time protocol）,short for PTP1588. Based on the analysis of the protocol,combined with network characteristics and time synchronization requirements of the process network of the digital substation,key points of application in the process network of the digital substation are pointed out. Finally the application ideas of the protocol are summarized-PTP1588 is a general time synchronization protocol,so for a specific application,appropriate protocol mechanisms and parameters in PTP1588 should be selected based on this specific application’s network characteristics and synchronization requirements to construct the application scheme.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第10期148-154,共7页
Power System Protection and Control
