M
Matti Lehtonen
Researcher at Aalto University
Publications - 770
Citations - 12827
Matti Lehtonen is an academic researcher from Aalto University. The author has contributed to research in topics: Fault (power engineering) & Computer science. The author has an hindex of 40, co-authored 694 publications receiving 8559 citations. Previous affiliations of Matti Lehtonen include Razi University & New York University.
Papers
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Journal ArticleDOI
Detection of Partial Saturation and Waveform Compensation of Current Transformers
TL;DR: In this paper, the authors proposed an efficient approach for detecting CT saturation with a generic discrimination index without the need for setting definition, where the simultaneous samples-based multiplication of the secondary current by its derivative is only used to differentiate between saturated and unsaturated wave portions.
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A comprehensive voltage control strategy with voltage flicker compensation for highly PV penetrated distribution networks
Ammar Arshad,Matti Lehtonen +1 more
TL;DR: A three-level distributed voltage control strategy is proposed that keeps the voltage quality of a network within the defined standards, utilizing the control capabilities of the Photovoltaic (PV) inverters to stabilize the node voltages.
Journal ArticleDOI
Computation of Peak Lightning-Induced Voltages Due to the Typical First and Subsequent Strokes Considering High Ground Resistivity
TL;DR: In this article, a 2D finite-difference time-domain method associated with the Agrawal coupling model is employed for the calculation of peak values of lightning-induced overvoltages.
Proceedings ArticleDOI
Thermal model for power transformers dynamic loading
TL;DR: In this paper, a thermal model of a power transformer in the form of simple equivalent circuit is presented, which is established to calculate the top oil and hot spot temperatures and compared with the conventional equations of IEEE clause 7.1 pu.