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Wind turbines having control for network faults and operating method thereof

  • US 8,378,515 B2
  • Filed: 10/09/2008
  • Issued: 02/19/2013
  • Est. Priority Date: 10/12/2007
  • Status: Active Grant
First Claim
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1. A network disturbance module for a control device of a wind energy installation having a generator driven by a wind rotor and a converter for producing electrical power, which is fed into a network, the network disturbance module comprising:

  • a measurement device configured to measure at least one electrical parameter of the network;

    a detector configured to identify a network disturbance and output a switching signal;

    a reference generator configured to produce a substitute reference vector for the converter based on the at least one electrical parameter; and

    a fault management unit comprising a fault classifier and configured to interact with the measurement device, detector, and reference generator such that, in the event of an undervoltage during island operation, a quick-action frequency regulator is activated, which acts on the converter to vary a real-power feed P in the event of a discrepancy in a network frequency.

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