Experimental Investigations of Mechanical and Chemical Properties of PVP Precompressed Pressboard Insulation for HV Power Transformers
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The Institution of Engineers (India): Series B"
DOI: 10.1007/s40031-020-00464-7
Abstract: As the rating of power transformers increases, oil–paper insulation requirements become extremely difficult as insulation system should have more withstanding capabilities of high voltages and high reliability. Thus, it is important to find pressboards and… read more here.
Keywords: insulation; precompressed pressboards; power transformers; mechanical chemical ... See more keywords
Ensemble Machine Learning Methods for better Dynamic Assessment of Transformer Status
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The Institution of Engineers (India): Series B"
DOI: 10.1007/s40031-021-00599-1
Abstract: Analyzing dissolved gases in the transformer's mineral oil helps to detect and classify the systemic faults in electric power transformers. Formerly, empirical methods such as Rogers ratio, Duval triangles 1–4–5, and pentagons 1–2 were used… read more here.
Keywords: ensemble machine; transformer; learning methods; power transformers ... See more keywords
Method for Rating and Analyzing the Combined Effects of Moisture and Temperature on the Oil–Paper Insulation System of Power Transformers by Means of Load Variations
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Control, Automation and Electrical Systems"
DOI: 10.1007/s40313-020-00607-7
Abstract: This paper presents an innovative method devised to study some of the harmful effects of moisture on power transformers, considering the possible formation of bubbles and free water. Its novelty stems from the fact that… read more here.
Keywords: power transformers; system; paper; power ... See more keywords
Condition monitoring and fault diagnosis of power transformer based on non-invasive measurement
Sign Up to like & getrecommendations! Published in 2025 at "Scientific Reports"
DOI: 10.1038/s41598-025-14242-2
Abstract: In modern power systems, it is crucial to monitor and detect internal faults in power transformers promptly and accurately to ensure reliability and prevent disruptions. Failure to identify these faults promptly can reduce the transformer’s… read more here.
Keywords: power transformer; power transformers; condition; power ... See more keywords
Low‐frequency noise removal and acoustic spectral distribution assessment method for high‐voltage power transformers with varying service lifetimes
Sign Up to like & getrecommendations! Published in 2025 at "IET Electric Power Applications"
DOI: 10.1049/elp2.12545
Abstract: The acoustic signals of power transformers serve as key indicators for assessing operational statuses and detecting internal mechanical issues. However, low‐frequency noise, such as fan noise, often obscures critical features. This study introduces an adaptive… read more here.
Keywords: analysis; frequency noise; power transformers; low frequency ... See more keywords
Extended second central moment approach to detect turn‐to‐turn faults in power transformers
Sign Up to like & getrecommendations! Published in 2019 at "IET Electric Power Applications"
DOI: 10.1049/iet-epa.2018.5689
Abstract: This study describes an extended approach to the differential protection of power transformers to identify turn-to-turn faults based on the second central moment (SCM). The proposal uses the differential currents as the input signals to… read more here.
Keywords: turn; second central; power; turn turn ... See more keywords
Diagnosing Faults in Power Transformers With Variational Autoencoder, Genetic Programming, and Neural Network
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3258544
Abstract: This work presents a new approach for the diagnosis of incipient faults in power transformers by considering dissolved gas analysis (DGA). A multilayer perceptron (MLP) neural network was trained to diagnose the type of transformer… read more here.
Keywords: neural network; power transformers; power; variational autoencoder ... See more keywords
Data Analysis Methodology Utilizing the Statistical Metrics Weight of Evidence (WoE) and Information Value (IV) to Assist in Asset Management of Power Transformers
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Access"
DOI: 10.1109/access.2024.3493876
Abstract: This article proposes an original contribution to assist in evaluating the condition of power transformers, the main asset of the electrical energy transmission sector. Due to constructive similarity, reactors are also evaluated. Data from the… read more here.
Keywords: methodology; metrics weight; power transformers; weight evidence ... See more keywords
A Review of Cybersecurity Challenges in Smart Power Transformers
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Access"
DOI: 10.1109/access.2024.3518494
Abstract: In the evolving landscape of critical infrastructure security, the increasing sophistication of cyber threats poses challenges, particularly to the power grid’s new technology infrastructure. Despite traditionally being considered passive elements, power transformers, as critical components… read more here.
Keywords: smart transformers; cybersecurity challenges; power transformers; cyber threats ... See more keywords
An Ultrawideband Partial Discharge Sensor for High-Voltage Power Transformers
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2024.3383064
Abstract: The online monitoring of partial discharges (PDs) for high-voltage power transformers is vital as it continuously tracks PD activities within a power transformer and warns about possible insulation failures at an early stage. Wall-mounted ultrahigh-frequency… read more here.
Keywords: sensor; high voltage; power transformers; prototype sensor ... See more keywords
Potential of Jatropha curcas oil as a dielectric fluid for power transformers
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Electrical Insulation Magazine"
DOI: 10.1109/mei.2017.7866674
Abstract: A dielectric liquid provides two main functions in power transformers: an insulant and a cooling medium. Mineral oil, largely due to its availability and low cost, has predominantly been used in power transformers for more… read more here.
Keywords: power transformers; potential jatropha; jatropha curcas; power ... See more keywords