Strategies and Control Modes of Converters For Frequency Regulation in Power Systems Without Inertia
Bulk Power Systems (BPSs) are experiencing a growing insertion of renewable sources, especially photovoltaic and wind power plants, which are generally connected to the grid through converters. Currently, converters connected to BPSs are operated in grid-following mode, where the converter simply in...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Chile |
| OAI Identifier: | oai:repositorio.anid.cl:10533/253060 |
| Acceso en línea: | https://hdl.handle.net/10533/253060 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería y Tecnología Ingeniería Eléctrica, Ingeniería Electrónica, Informática Ingeniería Eléctrica y Electrónica |
| Sumario: | Bulk Power Systems (BPSs) are experiencing a growing insertion of renewable sources, especially photovoltaic and wind power plants, which are generally connected to the grid through converters. Currently, converters connected to BPSs are operated in grid-following mode, where the converter simply injects a fixed amount of power, without participating neither in the inertial response nor the system frequency regulation. However, as the penetration of renewable sources increases and the participation of synchronous generators decreases, the converters must acquire new control schemes to preserve the system’s stability. Specifically, the grid-supporting and grid-forming operation modes are alternatives to consider in future BPSs. In this thesis, the frequency stability in a BPS with high participation of renewable sources is investigated, considering different modes of operation of converters. In particular, three operating scenarios are investigated, one of them with a 100% converters penetration. The results obtained show that a system with very few or no synchronous generators presents satisfactory performance when contingencies occur, provided that the converters controllers are properly tuned and that some converters participate in the system frequency regulation. Also, the frequency in a converter-dominated system demonstrates different dynamics than traditional BPSs. |
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