Study of control strategies of power electronics during faults in microgrids

Jundi Jia, Guangya Yang, Arne Hejde Nielsen, Peter Rønne-Hansen

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Abstract

This chapter has firstly summarized the instantaneous power theory and its extension for the purpose of controlling voltage source inverters under unbalanced faults. Regarding the converters operating in grid-connected mode to feed a certain amount of active and reactive power to the microgrid, two groups of control strategies, namely flexible oscillating power control and flexible positive- and negative-sequence power control are reviewed together with the design of inner current controllers and converter current limitation methods. For the autonomous operation of the microgrid, the control of a voltage source inverter operating under an islanded mode to provide voltage amplitude and frequency references is briefly reviewed. To improve the short-circuit performance of such an inverter under unbalanced fault, the negative-sequence current control loop is implemented. This chapter is finally supported by the application of different control strategies in a typical microgrid setting followed by discussions on microgrid protection
Original languageEnglish
Title of host publicationHybrid-Renewable Energy Systems in Microgrids
PublisherElsevier
Publication date2018
Pages109–146
Chapter7
ISBN (Print)978-0-08-102493-5
DOIs
Publication statusPublished - 2018
SeriesWoodhead Publishing Series in Energy

Keywords

  • Dual sequence control
  • Instantaneous power theory
  • Microgrid
  • Protection system
  • Short circuit current

Cite this

Jia, J., Yang, G., Nielsen, A. H., & Rønne-Hansen, P. (2018). Study of control strategies of power electronics during faults in microgrids. In Hybrid-Renewable Energy Systems in Microgrids (pp. 109–146). Elsevier. Woodhead Publishing Series in Energy https://doi.org/10.1016/B978-0-08-102493-5.00007-8