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
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
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
Condition monitoring of vegetable oil insulation in in-service power transformers: some data spanning 10 years
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Electrical Insulation Magazine"
DOI: 10.1109/mei.2017.7866678
Abstract: Power transformers are expected to operate for several decades [1]. The insulating oil of a power transformer can be replaced if it becomes too degraded. However, it is obviously financially preferable to a utility that… read more here.
Keywords: power transformers; power; vegetable oil; insulation ... See more keywords
Possibility of PD calibration on power transformers using UHF probes
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Dielectrics and Electrical Insulation"
DOI: 10.1109/tdei.2017.006374
Abstract: Partial Discharge (PD) measurement on power transformers using Ultra-High Frequency (UHF) techniques has great advantages on IEC method including possibility of online application, localization and greater immunity against external noises. But lacking a method to… read more here.
Keywords: power transformers; method; possibility; calibration ... See more keywords
A Novel Double-Stacked Autoencoder for Power Transformers DGA Signals With An Imbalanced Data Structure
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2021.3059543
Abstract: Artificial intelligence is the general trend in the field of power equipment fault diagnosis. However, limited by operation characteristics and data defects, the application of the intelligent diagnosis method in power transformers is still in… read more here.
Keywords: power transformers; stacked autoencoder; power; novel double ... See more keywords
Online Sensitive Turn-to-Turn Fault Detection in Power Transformers
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3140504
Abstract: Power transformers are of the most critical and expensive equipment in the power system industry. Meanwhile, they are exposed to a variety of faulty and abnormal operating conditions. Therefore, to prevent extension of these events… read more here.
Keywords: power transformers; turn; fault detection; turn turn ... See more keywords
Determining the Reliability of Power Transformers Considering a Five States Markov Model
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Latin America Transactions"
DOI: 10.1109/tla.2021.9443076
Abstract: This paper presents a methodology to calculate power transformers reliability indicators using a five state Markov model, which contemplates the probabilities of failure, maintenance, overload, and shutdown. The objective of including more states that lead… read more here.
Keywords: methodology; power; power transformers; markov model ... See more keywords