Patent ID: 11870243
Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method of controlling a renewable power generation plant comprising:
a power converter for connecting the renewable power generation plant to a power transmission network;
a circuit breaker arrangement between the power converter and the power transmission network, having a circuit breaker for each phase of the renewable power generation plant; and
a converter controller configured to generate control signals for the power converter and control signals for the circuit breaker arrangement;, which method comprises the steps of
detecting the occurrence of a phase-to-ground fault event in one of the phases of the power transmission network;
issuing control signals to the circuit breaker arrangement to keep the circuit breakers closed during the phase-to-ground event; and
issuing control signals to the power converter to ride through the phase-to-ground fault event.