Modeling of wind power plants for short circuit analysis in the transmission network

  • Samaan N
  • Zavadil R
  • Smith J
 et al. 
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Abstract

This paper presents guidelines for estimating short- circuit contribution
from wind power plants to the transmission network. Only squirrel-cage
induction generator based turbines have been considered. A commercial
software package has been used to model the plant in detail. Transient
analysis is performed to explore the nature of the plant short-circuit
current. AC symmetrical short-circuit currents are calculated and
used through a network reduction technique to obtain the equivalent
positive and zero sequence impedances for the wind power plant. Case
studies have been performed on a sample 50 MW wind power plant. The
plant contribution during the initial cycle of the fault (asymmetrical
current) can be as high as 6 or more times the rated turbine current.
As the fault persists, the contribution decreases in magnitude. Comparison
shows that the equivalent circuit gives identical results to the
detailed model. The equivalent circuit can be used to represent the
wind power plant in short-circuit analysis at the transmission level.

Author-supplied keywords

  • Equivalent circuits
  • asynchronous generators
  • equivalent circuit
  • induction generator
  • power generation fault
  • power generation faults
  • power system transients
  • power transmission faults
  • short circuit currents
  • short-circuit current analysis
  • short-circuit currents
  • software package
  • squirrel-cage induction generator
  • transient analysis
  • transmission network
  • wind power generation
  • wind power plant
  • wind power plants
  • wind turbine
  • wind turbines
  • zero sequence impedance

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Authors

  • N Samaan

  • R Zavadil

  • J C Smith

  • J Conto

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