Estimation of DC offset parameters using global optimization technique

  title={Estimation of DC offset parameters using global optimization technique},
  author={Fang Duan and Rastko Zivanovic},
  journal={2008 Australasian Universities Power Engineering Conference},
In this paper we present the global optimization algorithm based on grid search to estimate DC offset time constants from a current recorded during short circuit on transmission line. The grid on which the search for optimum is performed is constructed using the hyperbolic cross points (HCP). We are able to estimate three time-constants of the DC offset in the fault current signal, namely: time constant of the Thevenin's equivalent impedance of the network, current transformer (CT) time… CONTINUE READING

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