Author, Institution: Mantas Plienis, Kaunas University of Technology
Science area, field of science: Technological sciences, Energetics and Power Engineering, T006
Research Supervisor: Assoc. Prof. Dr. Tomas Deveikis (Kaunas University of Technology, Technological Sciences, Energetics and Power Engineering, T006)
Dissertation Defence Board of Energetics and Power Engineering Science Field:
Prof. Dr. Hab. Algirdas Kaliatka (Lithuanian Energy Institute, Technological Sciences, Energetics and Power Engineering, T006) – chairperson
Prof. Dr. Algirdas Baškys (Vilnius Gediminas Technical University, Technological Sciences, Electrical and Electronic Engineering, T 001)
Prof. Dr. Hab. Gintautas Miliauskas (Kaunas University of Technology, Technological Sciences, Energetics and Power Engineering, T006)
Chief Researcher Virginijus Radziukynas (Lithuanian Energy Institute, Technological Sciences, Energetics and Power Engineering, T006)
Prof. Dr. Hab. Antans Saulus Sauhats (Riga Technical University, Latvia, Technological Sciences, Energetics and Power Engineering, T 006)
Dissertation defence meeting will be at Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73 – 402, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (Gedimino 50, Kaunas) and on the internet: M. Plienis el. dissertation.pdf
Annotation: In response to the European Union’s climate change mitigation goals, it is essential to increase energy efficiency and integrate renewable energy sources into power grids. However, this process brings new challenges, especially related to harmonic distortions caused by nonlinear loads and power sources. This research aims to develop a methodology for real-time assessment of power transformer losses and optimization of reactive power compensation device operation. By using low-voltage side measurements, the proposed solution enables precise evaluation of higher-order harmonic impacts and helps avoid resonance phenomena that reduce equipment efficiency and pose system risks. The results show that properly controlled compensation devices can reduce transformer load losses by up to three times, significantly improving grid efficiency and reducing operating costs. The developed method is applicable across various energy systems, including PLC controllers, contributing to the sustainable development of the energy sector and increased business competitiveness.
June 11 d. 10:00
Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73 - 402, Kaunas)
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