Results 141 to 150 of about 9,797 (163)

Non-invasive prediction of conduction velocities in the human brain from MRI-derived microstructure features at 7 Tesla

Asadi S, Spencer A, Alemán-Gómez Y, Jedynak M, Canales-Rodriguez EJ, Pavan T, Mullier E, de Wouters L, Rigoni I, Lajous H, Chan M, Cionca A, Van De Ville D, Vulliémoz S, David O, Hagmann P, Jelescu I.   +16 more
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Fault Diagnosis of Power Transformers Using Duval Triangle

2020 IEEE PES/IAS PowerAfrica, 2020
Timely incipient fault identification in power transformers plays a very important role in improving transformer maintenance. Dissolved gas analysis (DGA) interpretation is a successful technique to detect incipient faults in power transformers. In this paper, dissolved gas analysis interpretation using Duval triangle technique is used to identify the ...
Bolanle Abe
exaly   +2 more sources

A Software Implementation of the Duval Triangle Method

Electrical Insulation, IEEE International Symposium on, 2008
Monitoring and diagnosis of electrical equipment, in particular power transformers, has attracted considerable attention for many years. It is of great importance for the utilities to find the incipient faults in these transformers as early as possible.
A. Akbari, A. Setayeshmehr, H. Borsi, E. Gockenbach   +3 more
exaly   +2 more sources

Development of software based of the Duval Triangle method

2016 12th IEEE International Conference on Industry Applications (INDUSCON), 2016
This paper presents an application on the analysis of gases dissolved in mineral insulating oil of power transformers, the Duval Triangle method. Through simulations yielded the results of incipient failures in transformers. So as pie charts of percentages of gases analyzed by the method. The expectation of this tool is to make it popular and free.
Thales Mendes Barbosa, Marco Antonio Ferreira Finocchio, Jeferson Goncalves Ferreira, Wagner Endo   +3 more
exaly   +2 more sources

Development of an Application Based on the Duval Triangle Method

IEEE Latin America Transactions, 2017
This paper presents an application on the analysis of gases dissolved in mineral insulating oil of power transformers, the Duval Triangle method. Through simulations yielded the results of incipient failures in transformers. So as pie charts of percentages of gases analyzed by the method. The expectation of this tool is to make it popular and free.
Thales Mendes Barbosa, Jeferson Goncalves Ferreira, Marco Antonio Ferreira Finocchio, Wagner Endo   +3 more
exaly   +2 more sources

A new fault diagnostic technique in oil-filled electrical equipment; the dual of Duval triangle

IEEE Transactions on Dielectrics and Electrical Insulation, 2016
Various techniques of fault diagnostics in oil-filled electrical equipment have been used in many years and are well documented in literature. The common techniques include; IEEE key gas, IEC 60599 gas ratios, Rodgers ratios, Doernenburg ratios and the Duval triangle. Among all the available techniques, Duval triangle remains the most accurate to date.
Josiah Munda
exaly   +2 more sources

On-site OLTC monitoring using duval triangle and DWRM

2014 2nd International Conference on Technology, Informatics, Management, Engineering & Environment, 2014
Generally, the insulation degradation and contacts failure happened inside the On Load Tap Changer (OLTC). Besides, the OLTC performance can be dropped due to contact wear. Hence., the worn contact creates hotspots inside OLTC tank and affects the insulating oil. Due to this phenomenon, the insulating oil will degrade faster.
Mohd Shahril Ahmad Khiar, Sharin Ab Ghani, Imran Sutan Chairul   +2 more
exaly   +2 more sources

Condition assessment of OLTC using duval triangle and static winding resistance test

2012 IEEE International Power Engineering and Optimization Conference, 2012
On Load Tap Changer (OLTC) failure occurs is due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performances. The worn contacts will cause hotspots in the OLTC tank and cause the insulating oil to degrade faster.
Sharin Ab Ghani
exaly   +2 more sources

Fault diagnostics in oil filled electrical equipment: Review of duval triangle and possibility of alternatives

2016 IEEE Electrical Insulation Conference (EIC), 2016
Fault diagnostics, identification and location in oil filled electrical equipment has been a challenging task which has been under critical focus of scientists in decades. One of the most successful methods of fault diagnostics and identification in such electrical equipment is the Duval triangle, which uses 3 fault gases; methane, ethylene and ...
Josiah Munda
exaly   +2 more sources

The duval triangle for load tap changers, non-mineral oils and low temperature faults in transformers

IEEE Electrical Insulation Magazine, 2008
New versions of the Duval triangle for equipment filled with mineral oil are proposed for load tap changers of the oil type, equipment filled with non- mineral oils, and for low-temperature faults where stray gassing of oils may interfere with diagnostics.
exaly   +2 more sources