Comparison of transformer winding responses to standard lightning impulses and operational overvoltages
M Florkowski, J Furgał, M Kuniewski… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
During operation transformers are typically subjected to overvoltages with different wave
shapes. Even though overvoltage protection systems, such as metal oxide surge arresters …
shapes. Even though overvoltage protection systems, such as metal oxide surge arresters …
Propagation of overvoltages in the form of impulse, chopped and oscillating waveforms in transformer windings—Time and frequency domain approach
M Florkowski, J Furgał, M Kuniewski - Energies, 2020 - mdpi.com
This paper describes a comparison of overvoltage propagation in transformer windings.
Expanding and evolving electrical networks comprise various classes of transient …
Expanding and evolving electrical networks comprise various classes of transient …
Development and Testing of Self-Triggering System for Laboratory Impulse Voltage Generators
M Pereira, T Silio, G Lopes, G Faria… - 2024 IEEE Electrical …, 2024 - ieeexplore.ieee.org
Insulation systems must be designed to withstand lightning overvoltages of different
waveforms and should pass through evaluation in high-voltage laboratories. In this context …
waveforms and should pass through evaluation in high-voltage laboratories. In this context …
Investigations of transformer winding responses to standard full and chopped lightning impulses
M Florkowski, J Furgał, M Kuniewski… - 2018 IEEE International …, 2018 - ieeexplore.ieee.org
Voltage tests of power transformers are performed with usage of full and chopped voltage
impulses. Due to the normalized procedures the extension of the tests with lightning voltage …
impulses. Due to the normalized procedures the extension of the tests with lightning voltage …
Evaluation of Vector Fitting Methodology on Distribution Transformers Modelling Based on Lightning Impulse Test Results
P Tavares, J Villibor, G Lopes, G Faria… - 2018 IEEE Electrical …, 2018 - ieeexplore.ieee.org
This paper aims to develop and validate black-box models for distribution transformers using
the vector fitting methodology on Frequency Response Analysis (FRA) results. Thirteen …
the vector fitting methodology on Frequency Response Analysis (FRA) results. Thirteen …
Investigation of High-Frequency Oscillation Discrepancies Presented by Distribution Transformers During Lightning-Impulse Voltage Tests
MP Pereira, GH Faria, JP Villibor… - IEEE Electrical …, 2021 - ieeexplore.ieee.org
Investigation of High-Frequency Oscillation Discrepancies Presented by Distribution
Transformers During Lightning-Impulse Voltag Page 1 March / April — Vol. 37, No. 2 33 …
Transformers During Lightning-Impulse Voltag Page 1 March / April — Vol. 37, No. 2 33 …
Statistical correlation technique for transient signal analysis during impulse testing of transformers
The reliable technique for identification of winding insulation faults in a transformer is
necessary for a testing engineer during impulse test. In this study, a statistical correlation …
necessary for a testing engineer during impulse test. In this study, a statistical correlation …