Grid simulator for power quality assessment of micro-grids Articles uri icon

authors

  • ELOY-GARCIA CARRASCO, JOAQUIN
  • VASQUEZ, JUAN CARLOS
  • GUERRERO, JOSEP M.

publication date

  • April 2013

start page

  • 700

end page

  • 709

issue

  • 4

volume

  • 6

International Standard Serial Number (ISSN)

  • 1755-4535

Electronic International Standard Serial Number (EISSN)

  • 1755-4543

abstract

  • In this study, a grid simulator based on a back-to-back inverter topology with resonant controllers is presented. The simulator is able to generate three-phase voltages for a range of amplitudes and frequencies with different types of perturbations, such as voltage sags, steady-state unbalanced voltages, low-order harmonics and flicker. The aim of this equipment is to test the performance of a given system under such distorted voltages. A prototype of the simulator, consisting of two inverters connected back-to-back to a 380 V three-phase grid and feeding a micro-grid composed of two-inverter interfaced distributed generators and a critical load was built and tested. A set of experimental results for linear purely resistive loads, non-linear loads and current-controlled inverters is presented to prove the capabilities of the simulator. Finally, a case study is presented by testing a micro-grid.

keywords

  • frame; system