Modeling of IEEE1588 on OPNET and Analysis of Asymmetric Synchronizing Error in Smart Substation

Jiongcong Chen, Haizhu Wang, Chunchao Hu, Kai Ma, Zexiang Cai

Electric Power Research Institute, Guangdong Power Grid Corporation, Guangzhou, China.
South China University of Technology, Guangzhou, China.

DOI: 10.4236/epe.2013.54B103                

Abstract

The IEEE1588 network time synchronization, matched with smart substation information network transmission, is becoming the next generation advanced data synchronization of the smart substation. It is known that the inherent asymmetry error of the network synchronization approach in the smart substation is highlighted, which is concerned particularly. This paper models the synchronization process of the IEEE1588 based on the communication simulation software of OPNET Modeler. Firstly, it builds the models of master-slave clock, IEEE1588 protocol and network synchroniza- tion model, and analyzes the composition and influencing factors of the asymmetry error. Secondly, it quantitatively analyzes the influence of the synchronous asymmetric error of the IEEE1588 affected by the network status differences and the clock synchronization signal transmission path differences. Then its correction method is analyzed, in order to improve the IEEE1588 synchronization reliability and gives the solutions to its application in smart substation.

Keywords

Smart Substation; IEEE1588; Synchronization; Asymmetric Error

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	S. L. Zhao, M. Q. Hu, X. B. Dou and Y. S. Du, “Research of Time Synchronization in Digital Substation Based on IEEE 1588,” Power System Technology, 2008, Vol. 32, No. 21, pp. 97-102.
[2]	L. Zhou and Y. F. Zhao, “Analysis and Experiment of Transparent Clock in Time Synchronization System of Smart substation,” Automation of Electric Power Systems, Vol. 36, No. 6, 2012, pp. 106-111.
[3]	Y. Z. Chen, “Researcher on Time Synchronization Technology of Power Systems,” Guangdong Electric Power, Vol. 20, No. 6, 2007, pp. 41-44.
[4]	H. S. Hua, D. H You and H. W. Yu, “Study on Method of Time Synchronization in Digital Substations,” Guangdong Electric PoeR, Vol. 21, No. 5, 2008, pp. 52-55.
[5]	W. B. Xia, “Construction of Synchronous Clock System of Guangdong Power Digital Network,” Guangdong Electric Power, Vol. 13, No. 2, 2012, pp. 11-14.
[6]	J. Jasperneite, K. Shehab and K. Weber, “Enhancements to the Time Synchronization Standard IEEE-1588 for a System of Cascaded Bridges,” Factory Communication System, Proceedings,2004 IEEE International Workshop onVolume, No. 22-24 , 2004 , pp. 239-244.
[7]	R. David, “IEEE 1588 Boundary Clock and Transparent Clock Implementation Using the DP83640,” National Semiconductor Application Note 1838, April28, 2008.
[8]	S. Martins, H. Clemens, S. Joachim, “Get on the Digital Bus to Substation Automation,” IEEE Power & Energy Magazine, Vol. 5, No. 3, 2007, pp. 51-56. doi:10.1109/MPAE.2007.365820
[9]	Y. C. Hu, X. S. Zhang, W. G. Xu, et al., “Error Analysis and Detection Method for IEEE1588 Clock Synchronization System,” Automation of Electric Power Systems, Vol. 34, No. 21, 2010, pp. 107-111.
[10]	D. Annex, “Transport of PTP Over User Datagram Protocol Over Internet Protocol Version 4,” IEEE Std1588-2008, 2008.
[11]	Y. J. Wei, “Effect of IEC 61850 Standard on Substation Automation System in China,” Guangdong Electric Power, Vol. 23, No. 6, 2010, pp. 31-33.
[12]	L. P. Jiang, X. J. Zeng, Z. Li, A. Penh, “Realization of High Accuracy Synchronous Clock for Power System Based on GPS,” Power System Technology, Vol. 35, No. 2, 2011, pp. 201-206.
[13]	Z. L. Yin, W. S. Liu, Q. X. Yang, et al., “A New IEEE 1588 Based Technology for Realizing the Sampled Values Synchronization on the Substation Process Bus,” Automation of Electric Power Systems, Vol. 29, No. 13, 2005, pp. 60-63.
[14]	X. Y. Huang, “Discussion on the Application of NTP in the time Synchronization of Power Automation Devices,” Automation of Electric Power Systems, Vol. 29, No. 15, 2005, pp. 93-95.
[15]	P. F. Yu, Q. Yu, H. Deng, et al., “The Research of Precision Time Protocol IEEE 1588,” Automation of Electric Power Systems, Vol. 33, No. 13, 2009, pp. 99-103.
[16]	T. Bauer, H. P. Lips, G. Thiele, et al., “Operational Tests on HVDC Thyristor Modules in a Synthetic Test Circuit for the Sylmar East Restoration Project,” IEEE Transactions on Power Delivery, 1997.doi:10.1109/61.636927
[17]	S. B. Zhou, Z. G. Tian, Y. B. Zhao, et al., “Substation Clock Server Meeting IEC61850,” Power System Protection and Control, Vol. 38, No. 7, 2010, pp. 56-58.
[18]	Y. Ju, “Modes of Web Communication of Digital Substation,” Power System Protection and Control, Vol. 38, No. 1, 2010, pp. 92-95.