MUMBAI, India, July 5 -- Intellectual Property India has published a patent application (202311085313 A) filed by Vestas Wind Systems A/S, Aarhus, Denmark, on Dec. 14, 2023, for 'methods and systems for fault ride through.'
Inventor(s) include Vishnu Arunachalam; Germn Claudio Tarnowski; and Kouroush Nayebi.
The application for the patent was published on July 4, under issue no. 27/2025.
According to the abstract released by the Intellectual Property India: "According to an aspect of the invention there is provided a method of operating a renewable energy power plant connected to a power network. The method comprises: obtaining a frequency signal at a power plant controller, the frequency signal being indicative of a frequency level of the power network; controlling at least one renewable energy generator of the renewable energy power plant in a normal mode of operation based on the frequency level of the power network, the normal mode of operation being executed by the power plant controller via one or more local controllers of the at least one renewable energy generator; and in the event of a power network fault: controlling the at least one renewable energy generator according to a fault ride through mode of operation using the one or more local controllers; determining if the frequency signal is reliable or unreliable based on a comparison to one or more reliability conditions; preventing resumption of the normal mode of operation while the frequency signal is in an unreliable condition; and resuming the normal mode of operation once the fault has cleared and the frequency signal is in a reliable condition."
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