Fault Ride-Through of HVDC Connected Large Offshore Wind Farms

Voltage source converter-based HVDC systems have been proposed for connecting large offshore wind farms. Fault ride-through during onshore ac fault is one of the main grid code requirements and technical challenges. Due to the reduction of transmitted grid power during such faults, the wind farm generated power must be either reduced or damped to ensure continuous system operation. Three different strategies, i.e., telecommunication based, offshore frequency modulation, and DC damping resistor are investigated.

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