Generic EMT Model for Real-Time Simulation of Large Disturbances in 2 GW Offshore HVAC-HVDC Renewable Energy Hubs
Saran Ganesh (Student TU Delft)
A.D. Perilla Guerra (TU Delft - Intelligent Electrical Power Grids)
José L. Rueda (TU Delft - Intelligent Electrical Power Grids)
Peter Palensky (TU Delft - Intelligent Electrical Power Grids)
Aleksandra Lekić (TU Delft - Intelligent Electrical Power Grids)
M. van der Meijden (TU Delft - Intelligent Electrical Power Grids, TenneT TSO B.V.)
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Abstract
This paper proposes a Electro-Magnetic Transient (EMT) model of a 2 GW offshore network with the parallel operation of two Modular Multi-level Converter (MMC)—High Voltage Direct Current (HVDC) transmission links connecting four Offshore Wind Farms (OWFs) to two onshore systems, which represent a large scale power system. Additionally, to mitigate the challenges corresponding to voltage and frequency stability issues in large scale offshore networks, a Direct Voltage Control (DVC) strategy is implemented for the Type-4 Wind Generators (WGs), which represent the OWFs in this work. The electrical power system is developed in the power system simulation software RSCAD™, that is suitable for performing EMT based simulations. The EMT model of 2 GW offshore network with DVC in Type-4 WGs is successfully designed and it is well-coordinated between the control structures in MMCs and WGs.
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