Three-level secure smart protection for ring grid-connected distributed generation
The penetration increase in distributed generators (DGs) into smart grids (SGs) will lead to new challenges, especially in protection systems. In the case of ring grids, the behavior of the short-circuit current is affected by DGs, and the medium voltage (MV) transformer connections significantly in...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/413174 |
| Acceso en línea: | https://hdl.handle.net/2117/413174 https://dx.doi.org/10.3390/en17133188 |
| Access Level: | acceso abierto |
| Palabra clave: | Neural networks (Computer science) Electric power systems Smart power grids Artificial neural network-based relay Protection Strategies Smart grids Distribution system Xarxes neuronals (Informàtica) Sistemes de distribució d'energia elèctrica Xarxes elèctriques intel·ligents Àrees temàtiques de la UPC::Enginyeria elèctrica::Distribució d’energia elèctrica |
| Sumario: | The penetration increase in distributed generators (DGs) into smart grids (SGs) will lead to new challenges, especially in protection systems. In the case of ring grids, the behavior of the short-circuit current is affected by DGs, and the medium voltage (MV) transformer connections significantly influence the changes; therefore, the protection strategies must be adapted for these scenarios. This study provides a comprehensive protection system for the MV distribution system (DS), including reconfigurable smart ring grids. The proposed protection methods contain three protection algorithms. The first protection algorithm relies on communication among all protective devices (PDs) in the grid, whereas the second protection method uses communication among PDs along the same line. Then, a third algorithm built on the local data of each PD is suggested as a backup to prevent communication issues and offer more reliable protection. MATLABTM SIMULINK simulations and experimental results on a scalable hardware grid were also employed to validate the protection algorithms. |
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