Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system
Abstract Precise energy management in distribution power system requires high‐precision time synchronization among large‐scale deployed devices. Multiple clock sources‐based time synchronization possesses advantages of reliability, high precision, and robustness, but still faces several challenges s...
| Glavni autori: | , , , , , |
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| Format: | Članak |
| Jezik: | English |
| Izdano: |
Wiley
2023-11-01
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| Serija: | IET Communications |
| Teme: | |
| Online pristup: | https://doi.org/10.1049/cmu2.12677 |
| _version_ | 1827769668848320512 |
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| author | Pengju Liu Sunxun Zhang Zhenyu Zhou Lei Lv Lin Huang Jiayu Liu |
| author_facet | Pengju Liu Sunxun Zhang Zhenyu Zhou Lei Lv Lin Huang Jiayu Liu |
| author_sort | Pengju Liu |
| collection | DOAJ |
| description | Abstract Precise energy management in distribution power system requires high‐precision time synchronization among large‐scale deployed devices. Multiple clock sources‐based time synchronization possesses advantages of reliability, high precision, and robustness, but still faces several challenges such as coupling between time synchronization error and delay, as well as different timescales between clock source and clock weight optimization. In this paper, a multi‐clock source time synchronization model is constructed and a problem is formulated to minimize the synchronization error and delay through jointly optimizing large‐timescale clock source selection and small‐timescale weight selection. A reinforcement learning‐based multi‐timescale multi‐clock source time synchronization algorithm named RL‐M2 is proposed to solve the formulated problem from a learning perspective. Besides, a lossless switching method is proposed to address the switching problem for multiple clock sources. Simulation results demonstrate the superior performance of RL‐M2 and the lossless switching method in time synchronization delay and error. |
| first_indexed | 2024-03-11T12:28:42Z |
| format | Article |
| id | doaj.art-7e90ea5561d344b5ad5549620cfd7d6c |
| institution | Directory Open Access Journal |
| issn | 1751-8628 1751-8636 |
| language | English |
| last_indexed | 2024-03-11T12:28:42Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Communications |
| spelling | doaj.art-7e90ea5561d344b5ad5549620cfd7d6c2023-11-06T04:32:48ZengWileyIET Communications1751-86281751-86362023-11-0117182041205210.1049/cmu2.12677Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power systemPengju Liu0Sunxun Zhang1Zhenyu Zhou2Lei Lv3Lin Huang4Jiayu Liu5State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University Beijing People's Republic of ChinaInformation & Communication Company State Grid Sichuan Electric Power Corporation Chengdu People's Republic of ChinaInformation & Communication Company State Grid Sichuan Electric Power Corporation Chengdu People's Republic of ChinaInformation & Communication Company State Grid Sichuan Electric Power Corporation Chengdu People's Republic of ChinaAbstract Precise energy management in distribution power system requires high‐precision time synchronization among large‐scale deployed devices. Multiple clock sources‐based time synchronization possesses advantages of reliability, high precision, and robustness, but still faces several challenges such as coupling between time synchronization error and delay, as well as different timescales between clock source and clock weight optimization. In this paper, a multi‐clock source time synchronization model is constructed and a problem is formulated to minimize the synchronization error and delay through jointly optimizing large‐timescale clock source selection and small‐timescale weight selection. A reinforcement learning‐based multi‐timescale multi‐clock source time synchronization algorithm named RL‐M2 is proposed to solve the formulated problem from a learning perspective. Besides, a lossless switching method is proposed to address the switching problem for multiple clock sources. Simulation results demonstrate the superior performance of RL‐M2 and the lossless switching method in time synchronization delay and error.https://doi.org/10.1049/cmu2.12677distribution networkspower gridstimingsynchronisation |
| spellingShingle | Pengju Liu Sunxun Zhang Zhenyu Zhou Lei Lv Lin Huang Jiayu Liu Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system IET Communications distribution networks power grids timing synchronisation |
| title | Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system |
| title_full | Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system |
| title_fullStr | Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system |
| title_full_unstemmed | Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system |
| title_short | Multiple satellite and ground clock sources‐based high‐precision time synchronization and lossless switching for distribution power system |
| title_sort | multiple satellite and ground clock sources based high precision time synchronization and lossless switching for distribution power system |
| topic | distribution networks power grids timing synchronisation |
| url | https://doi.org/10.1049/cmu2.12677 |
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