Results 141 to 150 of about 9,752 (182)

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 ...
Thembi U. Mawelela, Agha F. Nnachi, Aloys O. Akumu, Bolanle T. Abe   +3 more
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A Software Implementation of the Duval Triangle Method

Conference Record of the 2008 IEEE International Symposium on Electrical Insulation, 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
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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, Yasmin Hanum Md Thayoob, Young Zaidey Yang Ghazali   +4 more
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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
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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
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Transformer Fault Diagnosis with the Duval Triangle and Heuristic Techniques

Applied Mechanics and Materials, 2014
Dissolved gas analysis (DGA) is an effective tool for detecting incipient faults in power transformers. The ANSI/IEEE C57.104 standards, the most popular guides for the interpretation of gases generated in oil-immersed transformers, and the IEC-Duval triangle method are integrated to develop the proposed power transformer fault diagnosis method.
Jeeng Min Ling, Ming Jong Lin, Chao Tang Yu   +2 more
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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.
M.S. Ahmad Khiar, Y.H. Md Thayoob, Y.Z. Yang Ghazali, S. Ab Ghani, I. Sutan Chairul   +4 more
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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.
G. K. Irungu, A. O. Akumu, J. L. Munda
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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 ...
G. K. Irungu, A. O. Akumu, J. L. Munda
openaire   +1 more source