Achieving Enhanced Phasor POD Performance by Introducing a Control-Input Model

Hallvar Haugdal, Kjetil Uhlen, Hjörtur Jóhannsson

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


In this paper, an enhancement to the well known Phasor Power Oscillation Damper is proposed, aiming to improve its performance. Fundamental to the functioning of this controller is the estimation of a phasor representing oscillations at a particular frequency in a measured signal. The phasor is transformed to time domain and applied as a setpoint signal to a controllable device. The contribution in this paper specifically targets the estimation algorithm of the controller: It is found that improved estimation accuracy and thereby enhanced damping performance can be achieved by introducing a prediction-correction scheme for the estimator, in the form of a Kalman Filter. The prediction of the phasor at the next step is performed based on the control signal that is applied at the current step. This enables more precise damping of the targeted mode. The presented results, which are obtained from simulations on a Single-Machine Infinite Bus system and the IEEE 39-Bus system, indicate that the proposed enhancement improves the performance of this type of controller.
Original languageEnglish
Title of host publicationProceedings of 2023 IEEE Belgrade PowerTech
Number of pages7
Publication date29 Jun 2023
Article number10202902
ISBN (Print)978-1-6654-8779-5
Publication statusPublished - 29 Jun 2023
Event2023 IEEE Belgrade PowerTech - Hotel Crowne Plaza, Belgrade, Serbia
Duration: 25 Jun 202329 Jun 2023
Conference number: 15


Conference2023 IEEE Belgrade PowerTech
LocationHotel Crowne Plaza


  • Performance evaluation
  • Damping
  • Estimation
  • Prediction algorithms
  • Shock absorbers
  • Frequency estimation
  • Kalman filters


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