Research on Improvement of Data Synchronization Method for Distribution Network Differential Protection Based on 5G

Haiqiang Fan, Weiqing Wang (), Jing Cheng, Zhi Yuan, Xiaozhu Li, Sizhe Yan and Jinlong Zhu
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Haiqiang Fan: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Weiqing Wang: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Jing Cheng: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Zhi Yuan: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Xiaozhu Li: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Sizhe Yan: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China
Jinlong Zhu: Engineering Research Center for Renewable Energy Generation and Grid Integration, Ministry of Education, Xinjiang University, Urumqi 830017, China

Energies, 2024, vol. 17, issue 4, 1-14

Abstract: To enhance the reliability of traditional current protection systems in the evolving landscape of future power grids, this paper proposes a differential protection data synchronization approach that leverages satellite and 5G network timing. This method addresses the risk of inadvertent operation due to 5G communication jitter. It employs the BeiDou satellite system for synchronizing the timing of 5G base stations and terminals. This synchronization extends to the 5G terminal and the protection device, thereby mitigating time deviations caused by air interface delays and reducing the 5G network’s end-to-end delay by approximately 4 ms on average. A simulation was conducted to assess the reliability and effectiveness of the proposed method under normal satellite signal conditions. The results indicated a significant improvement in protection accuracy, with the method reducing the protection activation time by approximately 5–7 ms compared to the 5G timing data synchronization method. This advancement offers technical support for the safe and stable operation of new power systems.

Keywords: 5G communication; differential protection; time delay; double-ended data synchronization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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