System Identification Based Grid Agnostic Adaptive Droop Control Strategy

Prashant Pant, Thomas Hamacher, Federico Martin Ibanez, Vedran S. Perić

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper investigates the implementation possibilities of the recently proposed system identification-based adaptive droop control scheme under varying grid conditions. The paper also provides a detailed analysis of the impact of reactive droop parameter on the power decoupling. At the distribution level, the feeder impedance comprises of both, inductive and resistive components, leading to the problem of power coupling. To counter the problem of power coupling an adaptive droop control strategy was proposed that tunes the reactive droop coefficient while respecting the trade-off between reactive power sharing accuracy, small signal stability and the voltage drop. In this paper, two main contributions are presented. Firstly, a mathematical relationship is deduced that shows the impact of reactive droop coefficient on the coupling between active and reactive power. This relationship offers a comprehensive understanding for selecting suitable tuning parameters for adaptive droop control. Secondly, the performance of the proposed controller is evaluated over a wide range of grid impedance compositions through simulation. The results demonstrate that (i) increasing reactive power droop coefficient has a marginally diminishing effect on the power decoupling, which aligns with the mathematical deduction and (ii) the system-identification based droop controller can be implemented in any grid, irrespective of its impedance composition, making the controller grid-agnostic.

Original languageEnglish
Title of host publication2023 IEEE Belgrade PowerTech
PublisherIEEE
Publication date2023
ISBN (Electronic)978-1-6654-8778-8, 978-1-6654-8777-1, 978-1-6654-8779-5
DOIs
Publication statusPublished - 2023
Externally publishedYes
Event2023 IEEE Belgrade PowerTech, PowerTech 2023 - Belgrade, Serbia
Duration: 25 Jun 202329 Jun 2023

Conference

Conference2023 IEEE Belgrade PowerTech, PowerTech 2023
Country/TerritorySerbia
CityBelgrade
Period25/06/202329/06/2023
SponsorDIG Silent, EMTP, et al, Opal-RT Technologies, RTDS Technologies, Saturn Electric

Keywords

  • adaptive droop control
  • matrix-pencil
  • reactive droop coefficient
  • system identification
  • universal droop

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