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Received:March 21, 2013
Received:March 21, 2013
中文摘要: 智能化变电站中数字式差动保护数据同步是区别于传统变电站保护的新问题，数字化电流信息多个装置间的传输延时决定了必须重新考虑数据的多级同步。详细阐述了改进插值法用来解决工程上二次传输延时稳定时数字式差动保护数据同步的问题，分析了数字式线路光纤纵差和数字式主变差动保护的数据同步实现过程。
Abstract:Data synchronization of digital differential protection for smart substation is a new problem that is different from that of traditional protection． Data multistage synchronization should be considered because of the transmission delay among several devices． Improved interpolation method is used to solve the problem of data synchronization of digital differential protection, when secondary transmission delay is steady． The method is applied to realize data synchronization of both optical fiber longitudinal differential protection and digital differential protection of main transformer．
keywords: smart substation differential protection of main transformer optical fiber longitudinal differential protection data synchronization interpolation method
文章编号：20130408 中图分类号： 文献标志码：
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