Results 21 to 30 of about 9,752 (182)
IEEE Access, 2021 Fault type diagnosis is a very important tool to maintain the continuity of power transformer operation. Dissolved gas analysis (DGA) is one of the most effective and widely used techniques for predicting the power transformer fault types. In this paper,
Ibrahim B. M. Taha +2 more
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A Simple and Efficient Regularization Method for 3D BEM: Application to Frequency-Domain Elastodynamics [PDF]
, 2005 An efficient and easy-to-implement method is proposed to regularize integral equations in the 3D boundary element method (BEM). The method takes advantage of an assumed three-noded triangle discretization of the boundary surfaces.
Dangla, Patrick +3 more
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Energies, 2020 The intent of this work is to understand the influence of low energy discharge electric faults in mineral oil and synthetic esters on liquid degradation and gassing tendency at different aging conditions (based on acidity values).
L. Loiselle, U. Mohan Rao, I. Fofana
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Automatika, 2023 The current work aims to propose an adequate thermodynamic model, in addition to proposing and evaluating two composite models for the thermal decomposition of insulating mineral oil (IMO), considering that the models based on classical diagnostic ...
A. Manjula +6 more
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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.
Khiar, Mohd Shahril Ahmad +4 more
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The origin of physical variations in the star formation law [PDF]
, 2013 Observations of external galaxies and of local star-forming clouds in the Milky Way have suggested a variety of star formation laws, i.e., simple direct relations between the column density of star formation (Sigma_SFR: the amount of gas forming stars ...
Federrath, Christoph
core +1 more source
Diagnosing the type and location of the transformer fault by analyzing the dissolved gas using fuzzy logic [PDF]
هوش محاسباتی در مهندسی برقThere are many methods to diagnose transformer faults, including dissolved gas analysis (DGA), done in two conventional and smart ways. This paper presents a new method based on fuzzy logic and 5 DGA methods (key gas method, Durenberg's ratio method ...
Mohamad Beiranvand, Asghar Akbari Froud
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Enhancing the Diagnostic Accuracy of DGA Techniques Based on IEC-TC10 and Related Databases
IEEE Access, 2021 Investigating and enhancing the accuracy of widespread dissolved gas analysis (DGA) techniques based on IEC-TC10 and related databases was implemented. The current work aimed to help the experts to diagnose the transformers’ faults accurately. The
Osama E. Gouda +2 more
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Energies, 2020 The article describes a case study when the voltage collapse during lightning impulse tests of new power transformers was noticed and when the repeated tests finished with a positive result.
Tomasz Piotrowski +3 more
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Fault diagnosis of transformer using artificial intelligence: A review
Frontiers in Energy Research, 2022 Transformer is one of the important components of the power system, capable of transmitting and distributing the electricity generated by renewable energy sources.
Yan Zhang +3 more
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