Power control of VSC HVDC converters for limiting the influence of ac unbalanced faults on multi-terminal DC grids
| Autor: | Suul, Jon Are, Luna Alloza, Álvaro|||0000-0002-4487-6659, Rodríguez Cortés, Pedro|||0000-0002-1865-0461 |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica, Universitat Politècnica de Catalunya. SEER - Sistemes Elèctrics d'Energia Renovable |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
power transmission control
Power electronics Electrònica de potència Convertidors de corrent elèctric load flow control power grids Enginyeria electrònica::Electrònica de potència::Convertidors de corrent elèctric [Àrees temàtiques de la UPC] HVDC power convertors Electric current converters power control power transmission faults |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | It will be important for the operation of future multi-terminal HVDC systems that each converter unit is capable of limiting the influence of nearby AC faults on the DC grid. Thus, the local control systems at each terminal should be able to prevent double frequency active power oscillations caused by unbalanced AC faults from propagating to the DC-side of the converter. A simple approach for achieving this objective, while ensuring that the converter currents are limited to safe values, is therefore presented in this paper. The proposed method is based on estimation of Positive and Negative Sequence Virtual Flux components at the terminals of the converter. Double frequency oscillations in the active power flow through the converter can... |
| Databáze: | OpenAIRE |
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