Instantaneous Active/Reactive Power Control Strategy for Flicker Mitigation Under High PV Penetration

Ammar Arshad, Matti Lehtonen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

5 Citations (Scopus)

Abstract

In recent years, renewable energy sources, especially Photo-Voltaics (PVs), are being integrated into the Low-Voltage (LV) grid in massive numbers. Inherently, intermittent nature of PVs may cause power quality issues like the voltage rise and the flicker. Firstly, this paper investigates the Finnish LV grids of geographically dispersed areas, for the voltage flicker problem due to solar irradiance fluctuations. Secondly, instantaneous-active/reactive power-control methodology for PV is proposed for flicker problem mitigation. It makes use of the impedance value of the feeder from the transformer till the point of PV connection and active power fluctuations, for reactive-power compensation calculation. However, during the peak generation period, the PVs are to be momentarily curtailed to reduce the voltage fluctuation, hence flicker. To support the proposed strategy, simulations are conducted on Matlab, on various grids differing in topologies. The results reveal the correlation between voltage flicker and solar irradiance fluctuation and it was observed that the employment of the devised control strategy significantly improved the long-term flicker index at the weakest grid node.
Original languageEnglish
Title of host publicationProceedings of the 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2018
PublisherIEEE
Number of pages6
ISBN (Electronic)978-1-5386-4505-5
DOIs
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventIEEE PES Europe Conference on Innovative Smart Grid Technologies - Sarajevo, Bosnia and Herzegovina
Duration: 21 Oct 201825 Oct 2018
Conference number: 8

Publication series

NameIEEE PES Innovative Smart Grid Technologies Conference Europe
PublisherIEEE
ISSN (Print)2165-4816
ISSN (Electronic)2165-4824

Conference

ConferenceIEEE PES Europe Conference on Innovative Smart Grid Technologies
Abbreviated titleISGT Europe
CountryBosnia and Herzegovina
CitySarajevo
Period21/10/201825/10/2018

Keywords

  • Voltage flicker
  • Long-term voltage index
  • Power quality
  • Low-Voltage networks

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