Control and simulation of a 2-L VSC HVDC link together with a synchronous-based power plant.
The objective of the Thesis is to study and analyze the modeling and control of a two-level VSC converter in grid following mode within a point-to-point HVDC link. To do that, the two converters and the link between them have been modeled. All the control algorithms are detailed, as well as their pa...
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| Tipo de documento: | dissertação |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositório: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglês |
| OAI Identifier: | oai:upcommons.upc.edu:2117/405280 |
| Acesso em linha: | https://hdl.handle.net/2117/405280 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Electric current converters Convertidors de corrent elèctric Àrees temàtiques de la UPC::Enginyeria elèctrica |
| Resumo: | The objective of the Thesis is to study and analyze the modeling and control of a two-level VSC converter in grid following mode within a point-to-point HVDC link. To do that, the two converters and the link between them have been modeled. All the control algorithms are detailed, as well as their parameterization, implementation and validation. Special attention is paid to the network support functionalities offered by the converters, such as frequency and AC voltage droop, but without losing sight of the physical limits of the converter and the different techniques to avoid exceeding them. On the other hand, the response of the HVDC link is compared with that of a synchronous generator model, detailing the importance of inertia and of the latter’s behavior as a voltage source. The interaction between the generator and converter support droops when facing a mismatch between generation and demand is studied. Finally, the stability limits of the system are analyzed for variations in the inertia and droop characteristics of the converter. |
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