Interaction assessment and stability analysis of the MMC-based VSC-HVDC link
This paper investigates the dynamic behavior of a modular multi-level converter (MMC)-based HVDC link. An overall state-space model is developed to identify the system critical modes, considering the dynamics of the master MMC and slave MMC, their control systems, and the HVDC cable. Complementary t...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| 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:2117/327431 |
| Acceso en línea: | https://hdl.handle.net/2117/327431 https://dx.doi.org/10.3390/en13082075 |
| Access Level: | acceso abierto |
| Palabra clave: | Electric power transmission HVDC MMC Mutual interactions Small-signal analysis State-space model Energia elèctrica--Transmissió Àrees temàtiques de la UPC::Enginyeria elèctrica Àrees temàtiques de la UPC::Enginyeria elèctrica::Distribució d’energia elèctrica |
| Sumario: | This paper investigates the dynamic behavior of a modular multi-level converter (MMC)-based HVDC link. An overall state-space model is developed to identify the system critical modes, considering the dynamics of the master MMC and slave MMC, their control systems, and the HVDC cable. Complementary to the state-space model, an impedance-based model is also derived to obtain the minimum phase margin (PM) of the system. In addition, a relative gain array (RGA) analysis is conducted to quantify the level of interactions among the control systems of master and slave MMCs and their impacts on stability. Finally, with the help of the results obtained from the system analysis (eigenvalue, phase margin, sensitivity, and RGA), the system dynamic performance is improved. |
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