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Decentralized excitation control for an electrical power utility system

  • US 5,483,147 A
  • Filed: 03/23/1993
  • Issued: 01/09/1996
  • Est. Priority Date: 07/10/1992
  • Status: Expired due to Fees
First Claim
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1. An excitation controller, for an electrical power utility system which includes a generator for providing an output electrical power to a transmission line in response to input mechanical power and an excitation, the controller comprising:

  • means for receiving an estimate of the voltage magnitude and phase, with respect to a time reference signal, at a distal point on the transmission line, an estimate of the input mechanical power and a desired generator terminal voltage;

    means for estimating equilibrium rotor angle according to the estimate of the voltage magnitude and phase, with respect to the time reference signal, at the distal point on the transmission line, the estimate of the input mechanical power and the desired generator terminal voltage and for providing a signal indicative of the equilibrium rotor angle; and

    means for controlling the excitation provided to the generator according to the signal indicative of the estimated equilibrium rotor angle.

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