Instantaneous flicker control strategy with OLTC-fitted distribution transformers in LV networks

Ammar Arshad, Matti Lehtonen

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

Abstract

With the increasing PV penetration in Low Voltage (LV) networks, On-Load Tap Changer (OLTC) is being considered in the voltage control strategies. However, the flicker problem induced by the step voltage changes of the OLTC operation is still to be studied and its addition to the preexistent flicker (due to cloud movement and sudden load changes), can lead to the violation of voltage flicker standard. Therefore, a study is conducted quantifying the amount of flicker induced by the OLTC operation and a novel flicker control approach is presented that will stabilize the voltage level with minimum PV curtailment and least number of tapping operations. Moreover, its comparison is made with different voltage regulation techniques. A typical Finnish rural LV network is simulated in MATLAB and the sensitivity analysis is done for the variables of power ramp rate and time delay of OLTC, to fully authenticate the proposed strategy.

Original languageEnglish
Title of host publicationProceedings of 2020 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2020
PublisherIEEE
Pages544-548
Number of pages5
ISBN (Electronic)9781728171005
DOIs
Publication statusPublished - 26 Oct 2020
MoE publication typeA4 Article in a conference publication
EventIEEE PES Europe Conference on Innovative Smart Grid Technologies - Virtual, Online
Duration: 26 Oct 202028 Oct 2020

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
CityVirtual, Online
Period26/10/202028/10/2020
OtherVirtual conference

Keywords

  • Long-term flicker index
  • On-load tap changer
  • Reactive power control
  • Voltage flicker

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