Fault ride-through control based on voltage prioritization for grid-forming converters
This paper discusses that the existing grid codes on the fault ride-through (FRT) opera-tion have certain complications to be implemented in the grid-forming (GFM) converters.In particular, they do not provide a clear guidelines on the suitable prioritization of thepositive- and negative-sequence cu...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| 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:2117/384841 |
| Acceso en línea: | https://hdl.handle.net/2117/384841 https://dx.doi.org/10.1049/rpg2.12682 |
| Access Level: | acceso abierto |
| Palabra clave: | Power electronics Electric current converters Electrònica de potència Convertidors de corrent elèctric Àrees temàtiques de la UPC::Enginyeria elèctrica |
| Sumario: | This paper discusses that the existing grid codes on the fault ride-through (FRT) opera-tion have certain complications to be implemented in the grid-forming (GFM) converters.In particular, they do not provide a clear guidelines on the suitable prioritization of thepositive- and negative-sequence currents needed for a desired voltage profile during FRToperation. To address this challenge, two FRT controls which are based on (i) voltagebalancing priority, and (ii) voltage magnitude priority are investigated for GFM convert-ers. The former gives priority to the elimination of negative-sequence voltage, while theremaining converter’s capacity is used to increase the positive-sequence voltage. On thecontrary, the latter prioritizes the increase of positive-sequence voltage, while it tries toreduce negative-sequence voltage by using the remaining converter’s capacity. The dynamicperformances of these two FRT controls are thoroughly discussed, and the simulationresults show that depending on the desired voltage profile during fault, one of them canbe implemented. |
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