NDLI: Sampled data synchronization scheme for relay protection in smart substation

Content Provider	IEEE Xplore Digital Library
Author	Li Zhongqing Liu Kaibo Li Xiao Jiang Xianguo
Copyright Year	2014
Description	Author affiliation: Dept. of Relay Protection, China Electr. Power Res. Inst., Beijing, China (Liu Kaibo; Li Xiao; Jiang Xianguo) \|\| Electr. Eng. Autom. Dept., Tianjin Univ., Tianjin, China (Li Zhongqing)
Abstract	Synchronizing sampled data is a key factor to application reliability in relay protection. To eliminate the impact of the differences and the transmission latency caused by synchronization, and to identify data sampling time accurately and effectively, are critical to synchronize the bay level data with the process level in smart station. From the perspective of relay protection in smart substation applications, this article analyzes the issues which sampled data synchronization is facing in smart substation relay protection and elaborates the core idea, the advantages and disadvantages of sampled data synchronization technology in protection based on P2P communication mode, and sampled data sync mark technology in protection depended on external sync source. On the basis of current analysis and summarizes in the limitations of various synchronization schemes in engineering application, this article considers the networked application requirements in smart substation relay protection, and proposes a multi-interval data sampling synchronization scheme based on switch for data latency marking. The sampled data synchronization accuracy has been tested in the smart substation network simulation environment based on this technical scheme. The results show that the scheme meets the technical requirements of relay protection in sample data synchronization accuracy, which can realize the networked application of relay protection in smart substation.
Starting Page	1778
Ending Page	1784
File Size	519971
Page Count	7
File Format	PDF
ISBN	9781479950324
DOI	10.1109/POWERCON.2014.6993613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Synchronization Switches Substations Protective relaying Reliability Accuracy Network Smart station Relay Protection Sampled data
Content Type	Text
Resource Type	Article

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