Transient Stability Impact of Reactive Power Control on Grid-Connected Converters

Donghua Pan, Xiongfei Wang, Fangcheng Liu, Rongliang Shi

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Abstract

This paper presents a design-oriented transient stability analysis of a droop-controlled voltage-source converter (VSC), where the effect of reactive power control is in focus. By looking into the dynamic coupling between the active power loop and the reactive power loop, a large-signal model of the droop controller is built first. Based on this model, the transient responses of the droop-controlled VSC under grid faults are then evaluated using the phase portrait. It reveals that the reactive power control will generate a transient voltage drop to the VSC, which takes a positive feedback effect and deteriorates the transient stability. Fortunately, such a voltage drop can be offset by raising the reactive power reference. Finally, simulations and experiments are performed to verify the theoretical analysis.
Original languageEnglish
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Number of pages6
Place of PublicationBaltimore, Maryland, USA
PublisherIEEE Press
Publication dateSep 2019
Pages4311-4316
Article number8912567
ISBN (Electronic)9781728103952
DOIs
Publication statusPublished - Sep 2019
Event2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, United States
Duration: 29 Sep 20193 Oct 2019

Conference

Conference2019 IEEE Energy Conversion Congress and Exposition (ECCE)
CountryUnited States
City Baltimore
Period29/09/201903/10/2019
SeriesIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

Keywords

  • Droop control
  • Large-signal disturbance
  • Reactive power control
  • Transient stability
  • Voltage-source converter

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    Pan, D., Wang, X., Liu, F., & Shi, R. (2019). Transient Stability Impact of Reactive Power Control on Grid-Connected Converters. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 4311-4316). [8912567] IEEE Press. IEEE Energy Conversion Congress and Exposition https://doi.org/10.1109/ECCE.2019.8912567