Oil-immersed power transformer condition monitoring methodologies: A review

L Jin, D Kim, A Abu-Siada, S Kumar - Energies, 2022 - mdpi.com
A power transformer is one of the most critical and expensive assets in electric power
systems. Failure of a power transformer would not only result in a downtime to the entire …

Partial discharge (PD) signal detection and isolation on high voltage equipment using improved complete EEMD method

VC Thuc, HS Lee - Energies, 2022 - mdpi.com
Electricity has a crucial function in contemporary civilization. The power grid must be stable
to ensure the efficiency and dependability of electrical equipment. This implies that the high …

Identification of gate turn-off thyristor switching patterns using acoustic emission sensors

M Kozak, A Bejger, A Tomczak - Sensors, 2020 - mdpi.com
Modern seagoing ships are often equipped with converters which utilize semiconductor
power electronics devices like thyristors or power transistors. Most of them are used in …

Partial discharge detection and induced surface current analysis using transient earth voltage method for high voltage equipment

A Itose, M Kozako, M Hikita - 2016 International Conference on …, 2016 - ieeexplore.ieee.org
This study deals with advancement of insulation diagnosis technology by partial discharge
(PD) detection with transient earth voltage (TEV) signal in high voltage equipment such as …

A Novel Method for Diagnosing Power Electronics Devices Using Elastic Wave Emission

M Kozak, R Gordon - Energies, 2023 - mdpi.com
This work is an introduction of acoustic emission (AE) signals used in order to detect the
malfunction of selected semiconductor elements. The authors proposed the use of internally …

Partial discharge detection by TEV sensors and signal propagation analysis in transformer model

A Itose, Y Tai, M Kozako… - The 19th International …, 2015 - kyutech.repo.nii.ac.jp
This paper deals with a detailed study on partial discharge (PD) generated in transformers
using transient earth voltage (TEV) detection method. Experiment and numerical analysis …

Noncontacting Electromagnetic-Acoustic Measurement Technique for Partial Discharge Detection and Localization

KD Hong, X Wang, W Wang… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Partial discharge (PD) detection is crucial for maintaining insulation systems of high-voltage
equipment. Enhancing diagnostic credibility and expanding additional system functionalities …

Highly sensitive partial discharge detection by TEV method under severe noise conditions

Y Fujii, H Cho, Y Nakamura - 2017 4th International …, 2017 - ieeexplore.ieee.org
Partial discharge detection is useful for insulation diagnosis of switchgear. Since a partial
discharge can be easily measured by attaching a sensor to a metal casing, we have been …

PD Pattern of Various Defects measured by TEV sensor

H Prasetia, U Khayam, A Itose… - … Conference on High …, 2017 - ieeexplore.ieee.org
Partial Discharge (PD) is one of symptom that occur due to defect on the high voltage
insulation system. PD measurement is needed to monitor the condition of equipment and …

Grounding effect on transient earth voltage signal induced by partial discharge in metal box model

H Yoshizumi, T Koga, M Kozako… - 2017 International …, 2017 - ieeexplore.ieee.org
This paper deals with advancement of insulation diagnosis technology for high voltage
equipment by partial discharge (PD) detection using transient earth voltage (TEV) detection …