Results 1 to 10 of about 9,797 (163)
Transactions on Environment and Electrical Engineering, 2016 Dissolved gas-in-oil analysis (DGA) is a sensitive and reliable technique for the detection of incipient fault condition within oil-immersed transformers. When the mineral oil is subjected to high thermal or/and electrical stresses, it decomposes and, as
Sobhy Serry Dessouky +3 more
exaly +6 more sources
Bayesian Duval Triangle Method for Fault Prediction and Assessment of Oil Immersed Transformers [PDF]
Measurement + Control, 2017 Dissolved gas analysis of transformer insulating oil is considered the best indicator of a transformer’s overall condition and is most widely used. In this study, a Bayesian network was developed to predict failures of electrical transformers.
Abdelaziz Lakehal, Fouad Tachi
doaj +2 more sources
Machine learning based multi-method interpretation to enhance dissolved gas analysis for power transformer fault diagnosis [PDF]
HeliyonAccurate interpretation of dissolved gas analysis (DGA) measurements for power transformers is essential to ensure overall power system reliability. Various DGA interpretation techniques have been proposed in the literature, including the Doernenburg ...
Suwarno +3 more
doaj +2 more sources
Transformer fault diagnose intelligent system based on DGA methods [PDF]
Scientific ReportsPower transformers have great importance in power system networks. Any malfunctions in the power transformers cause a system disconnection, which leads to lost profits for the electricity utilities.
Saad A. Mohamed Abdelwahab +3 more
doaj +2 more sources
Analysis of Transformer Conditions using Triangle Duval Method
IOP Conference Series: Materials Science and Engineering, 2018 Abstract Electrical or thermal failure that occurred in the transformer oil can produce a dangerous gas called gas fault. By indicating the content of dissolved gases in the transformer oil, can be obtained information about what happened to the oil so it can be estimated indication of the type and cause of the failure in the transformer.
S Permana, S Sumarto, W S Saputra
exaly +2 more sources
Diagnosis of OLTC via Duval Triangle Method and Dynamic Current Measurement
Procedia Engineering, 2013 AbstractPower transformers studies have shown that the main cause of power transformers failures is the On Load Tap Changer (OLTC). OLTC failure occurs due to the insulation degradation and contacts failure inside it. Other than that, contacts wear influences the OLTC performance and this phenomenon has not been deeply investigated.
Mohd Shahril Ahmad Khiar +2 more
exaly +2 more sources
Duval Triangle-Based Dissolved Gas Analysis using GNU Octave for Transformer Fault Detection
Aviation Electronics, Information Technology, Telecommunications, Electricals, ControlsTransformers are vital components in electrical power systems. However, they are also susceptible to various types of failures, including thermal and electrical faults caused by the formation of electromotive force, which, if left unaddressed, may result
Ervina Galuh Ika Putri +2 more
doaj +2 more sources
Duval Triangle: A Noble Technique for DGA in Power Transformers [PDF]
International Journal of Electrical and Power Engineering, 2010 Sukhbir Singh, M.N. Bandyopadh
exaly +2 more sources
Jurnal Jaringan Telekomunikasi, 2023 Transformers are one of the important electrical equipment in the power system. To prevent some electrical contact on the component in transformers, an insulator or dielectric material is needed likely insulating oil.
Muhammad Akmal Afibuddin Putra +3 more
doaj +1 more source
Conventional Dissolved Gases Analysis in Power Transformers: Review
Energies, 2023 Transformers insulated with mineral oil tend to form gases, which might be caused by system faults or extended use. Based on an evaluation of the main failure analysis techniques using combustible gases, this study reviewed the conventional techniques ...
Alcebíades Rangel Bessa +3 more
doaj +1 more source