Results 91 to 100 of about 3,816 (209)

DGA Distribution Model for Discharging Deterioration of Converter Transformer in Various AC‐DC Composite Voltage Ratios and Statistical Diagnosis

The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.
This paper proposes a statistical DGA diagnosis method to evaluate the occurrence and type of the discharge starting stage of the converter transformer based on a statistical analysis of the gas generation amount in the converter transformer oil during operation.
Kwang Hui An, Won‐Chol Yang, Chol Hong Pak   +2 more
wiley   +1 more source

Using the Analysis of the Gases Dissolved in Oil in Diagnosis of Transformer Bushings with Paper-Oil Insulation—A Case Study

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, Pawel Rozga, Ryszard Kozak, Zbigniew Szymanski   +3 more
doaj   +1 more source

Analysis of aged insulating oil for early detection of incipient fault inside the high voltage equipment [PDF]

, 2013
Ageing of the transformer depends on several factors especially electrical and thermal stresses. Due to which incipient faults occurs which in turn if left undetected will cause deterioration and eventually lead to failure of the transformer.
Hembrom , Shivani
core  

Integrating an agent-based wireless sensor network within an existing multi-agent condition monitoring system [PDF]

, 2009
The use of wireless sensor networks for condition monitoring is gaining ground across all sectors of industry, and while their use for power engineering applications has yet been limited, they represent a viable platform for next-generation substation ...
Baker, P.C., Catterson, V.M., McArthur, S.D.J.   +2 more
core   +1 more source

Innovative Development and Characterization of a Beef‐Based High‐Protein Snack: An Integrative Study of Physicochemical and Acoustic Properties, and Its Protein Quality

Journal of Food Science, Volume 91, Issue 1, January 2026.
ABSTRACT The current study assessed the possibility of developing a beef‐based high‐protein snack product, focusing on an integrative analytical approach that combines physicochemical and acoustic properties, as well as a comparative nutritional and protein quality advantage over starch‐based controls.
Sandamini Wickramaarachchi, Michael Nesbit, Michael Just, Mauro Mocerino, Cassiana Blanca J. Villarino, Gary A. Dykes, Ranil Coorey   +6 more
wiley   +1 more source

Impact of Load Ramping on Power Transformer Dissolved Gas Analysis

IEEE Access, 2019
Dissolved gas in oil analysis (DGA) is one of the most reliable condition monitoring techniques, which is currently used by the industry to detect incipient faults within the power transformers.
Huize Cui, Liuqing Yang, Shengtao Li, Guanghao Qu, Hao Wang, Ahmed Abu-Siada, Syed Islam   +6 more
doaj   +1 more source

A Hybrid Optimization Model for Transformer Fault Diagnosis Based on Gas Classification

Digital
Dissolved gas analysis (DGA) provides valuable information for transformer condition monitoring, yet accurate multi-class fault identification remains challenging due to overlapping gas patterns and the sensitivity of classifier hyperparameters.
Junju Lai, Dongpeng Weng, Feng Xian, Yuandong Xie, Yujie Chen, Qian Zhou, Chao Yuan   +6 more
doaj   +1 more source

An adaptive multi-fuzzy logic model for diagnosing transformer faults using dynamic weight optimization

e-Prime: Advances in Electrical Engineering, Electronics and Energy
Dissolved gas analysis (DGA) is crucial for diagnosing early power transformer failures. Traditional DGA interpretation methods like Duval Triangle, IEC ratio, Roger ratio, Doernenburg ratio and Key Gas are inconsistent and vary in accuracy, especially ...
Kim-Anh Nguyen, Huy Hoang Le, Ba Tu Phung   +2 more
doaj   +1 more source

A Fault Diagnosis Model of Power Transformers Based on Dissolved Gas Analysis Features Selection and Improved Krill Herd Algorithm Optimized Support Vector Machine

IEEE Access, 2019
In this paper, a set of dissolved gas analysis (DGA) new feature combinations is selected as input from the mixed DGA feature quantity, and an improved krill herd (IKH) algorithm optimized support vector machine (SVM) transformer fault diagnosis model is
Yiyi Zhang, Xin Li, Hanbo Zheng, Huilu Yao, Jiefeng Liu, Chaohai Zhang, Hongbo Peng, Jian Jiao   +7 more
doaj   +1 more source

Method-MS, final report 2010 [PDF]

, 2011
Radiometric determination methods, such as alpha spectrometry require long counting times when low activities are to be determined. Mass spectrometric techniques as Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Thermal Ionisation Mass ...
Nygren, Ulrika, Palsson, Sigurdur Emil, Popic, Jelena M, Roos, Per, Salminen, Susanna, Sigmarsson, Olgeir, Skipperud, Lindis   +6 more
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