Open AccessAn optimization method of clock synchronization for large-scale regional power network based on IEEE 1588
Author(s) -
Yu Zuo,
Xingcai Wang,
Bo Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2108/1/012063
Subject(s) - clock synchronization , computer science , allan variance , standard deviation , synchronization (alternating current) , global positioning system , frequency deviation , real time computing , clock drift , kalman filter , master clock , network time protocol , ieee 802.11g 2003 , self clocking signal , clock skew , ieee 802.11 , time synchronization , throughput , clock signal , computer network , mathematics , telecommunications , jitter , automatic frequency control , statistics , wireless , channel (broadcasting) , artificial intelligence
At present, mobile devices generally use GPS, Beidou and other satellite time service methods to obtain time, but the clock synchronization based on IEEE 1588 protocol still has deviation. To solve this problem, a clock synchronization method is proposed to improve IEEE 1588 protocol. Based on the analysis of IEEE 1588 protocol, the clock deviation and frequency deviation which affect the synchronization accuracy are modeled. The second-order Kalman filtering algorithm is used to recursively deduce the clock deviation and frequency deviation, and the Allan variance is used to verify the noise characteristics and constantly correct the clock deviation. Finally, the improved effect is verified by relevant experiments. The results show that the improved system can improve the synchronization accuracy.