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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Li WanLin He YingLi Ding Ding Ma Tao Jiang XueChao |
| Copyright Year | 2011 |
| Description | Author affiliation: Nanjing University of Aeronautics and Astronautics, 210016, China (Jiang XueChao) || Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China (Li WanLin) || Information technology & communication company, Nari Group Corporation, SGEPRI, Nanjing 211100, China (He YingLi; Ding Ding; Ma Tao) |
| Abstract | In smart power substations, the application of precision time protocol defined in IEEE1588 becomes more and more popular. As a distributed network application, PTP is a perfect service to unify all the clocks of smart subsystems in the power substation. It will make great sense to research and improve PTP protocol in order to let it be practical and applicable for power automation applications. This paper focuses the performance of PTP. For convenience to analyze the performance of PTP, the basic elements, the messages, and protocol procedures are detailedly described in this paper. Formulas related with PTP performance are deduced. Frequency difference is the main factor to degrade the accuracy of PTP. Frequency difference among mater clock, slave clock and transparent clock is fully discussed in this paper. The influence in directly connected PTP system and in transparent clock participated PTP system is analyzed from various aspects. In the end of the paper, some countermeasures to cope with degradation of PTP performance are suggested. |
| Starting Page | 840 |
| Ending Page | 843 |
| File Size | 101845 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424496228 |
| e-ISBN | 9781424496211 |
| DOI | 10.1109/APAP.2011.6180713 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-10-16 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Protocols Automation Substations Peer to peer computing IEEE1588 Time frequency analysis Smart substation Synchronization PTP Smart grid Frequency difference Clocks |
| Content Type | Text |
| Resource Type | Article |
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