A packet-loss resilient protection scheme for hybrid microgrids based on Markov chain model and spline interpolation
The transmission of sensor information from multiple locations through the communication channel significantly impacts the reliability of microgrid protection algorithms due to packet loss. The lossy information acquired at the control centre does not reflect the actual dynamics of the microgrid. Sc...
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| Veröffentlicht in: | Sustainable Energy, Grids and Networks Jg. 35; S. 101121 |
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| Hauptverfasser: | , , |
| Format: | Journal Article |
| Sprache: | Englisch |
| Veröffentlicht: |
Elsevier Ltd
01.09.2023
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| Schlagworte: | |
| ISSN: | 2352-4677, 2352-4677 |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The transmission of sensor information from multiple locations through the communication channel significantly impacts the reliability of microgrid protection algorithms due to packet loss. The lossy information acquired at the control centre does not reflect the actual dynamics of the microgrid. Schemes reported in the literature for microgrid protection have not taken into account the inevitable phenomenon of data loss in the communication network. The present work proposes a scheme based on the combined framework of critical sensor identification (CSI), Markov chain-based packet loss modelling, spline interpolation and deep learning based stacked sparse autoencoder (SSAE) classifier for hybrid microgrid protection. The scheme initiates with the acquisition of sensor information from critical buses (identified using observability theory), followed by deriving the signal with packet loss of a specific rate. From the signal with packet loss, an approximate version of the original signal is obtained using spline interpolation and further fed to a set of SSAE classifier modules formulated to perform the tasks of fault detection/classification and section identification. The proposed scheme has been validated for wide range of fault scenarios (generated by varying the fault resistance, fault inception angle, fault location for all possible fault types) under varying degrees of packet loss (generated by varying the burst length and packet loss rate). The simulation result reflects that the proposed protection scheme is able to attain a high degree of accuracy and reliability along with properly recovering the post fault current–voltage dynamics from the lossy data under normal and N-1 contingency scenarios. |
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| ISSN: | 2352-4677 2352-4677 |
| DOI: | 10.1016/j.segan.2023.101121 |