Operation strategy of a multi-terminal HVDC-connected wind farm against a highly fluctuating condition
R. Irnawan (Aalborg University)
A.D. Perilla Guerra (TU Delft - Intelligent Electrical Power Grids)
Fausia da Silva (Aalborg University)
C. L. Bak (Aalborg University)
José Luis Rueda Rueda (TU Delft - Intelligent Electrical Power Grids)
Mart van der Meijden (TU Delft - Intelligent Electrical Power Grids, TenneT TSO B.V.)
Anna M. Lindefelt (Energinet.dk)
Alex Alefragkis (TenneT TSO B.V.)
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Abstract
When a PtP link is expanded into a multi-terminal HVDC (MTDC) system by interconnecting an additional offshore wind farm (OWF) converter, the existing operation strategy changes. The OWF power production should be considered as a determining factor to operate the system. In this paper, a new power capability curve for the existing converters is proposed. This new power capability curve is formulated as a function of OWF power production. Furthermore, different converter control strategies are also described and compared. It has been found that a multi-slope droop control strategy is the most suitable strategy for the 3-terminal HVDC system with an OWF converter.
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