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An Interpolation-based Method for Numerical Simulation of Digital Controllers in Power System Dynamic Studies
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  • Mehran Jafari ,
  • Gautier Bureau ,
  • Marco Chiaramello ,
  • Adrien Guironnet ,
  • Patrick Panciatici ,
  • Petros Aristidou
Mehran Jafari
Cyprus University of Technology

Corresponding Author:[email protected]

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Gautier Bureau
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Marco Chiaramello
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Adrien Guironnet
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Patrick Panciatici
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Petros Aristidou
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Abstract

In recent years, the number of digital controllers employed in electric power systems has increased drastically. Either from the modernization of existing analog ones or the introduction of new, data-driven, or optimization-based controllers, they are now dominating the behavior of power systems. However, this introduces a challenge in the simulation and analysis of power systems dynamics as the existing numerical simulation methods are very time-consuming when tackling hybrid differential-algebraic systems. In this paper, a novel interpolation-based method is proposed for handling discrete time events in the numerical simulation of hybrid systems. This method allows to fully exploit the potential of variable time-step integration methods without requiring a time-step reduction in the case of discrete events. Therefore, it accelerates the numerical simulation of large-scale systems containing many digital controllers, which would be necessary for the near future.