Results 41 to 50 of about 24,723,956 (329)

Application of Logistic Regression Algorithm in the Interpretation of Dissolved Gas Analysis for Power Transformers

Electronics, 2021
Dissolved gas analysis (DGA) is one of the regular routine tests accepted by worldwide utilities to detect power transformer incipient faults. While the DGA measurement has fully matured since the development of offline and online sensors, interpretation
Yousuf D. Almoallem, Ibrahim B. M. Taha, M. Mosaad, Lara Nahma, A. Abu-Siada   +4 more
semanticscholar   +1 more source

Pan-arctic trends in terrestrial dissolved organic matter from optical measurements [PDF]

, 2016
Climate change is causing extensive warming across arctic regions resulting in permafrost degradation, alterations to regional hydrology, and shifting amounts and composition of dissolved organic matter (DOM) transported by streams and rivers.
Tank, Suzanne, Holmes, Robert, McClelland, James, Butler, Kenna, Hernes, Peter J., Spencer, Robert G. M., Kenna D Butler, Tank, Suzanne E., Spencer, Robert, Johan eSix, Robert M. Holmes, Rachael Y. Dyda, James W. McClelland, Robert M Holmes, Paul J. Mann, Suzanne E. Tank, Rachael Y Dyda, Butler, Kenna D., Hernes, Peter, Robert G. M. Spencer, Suzanne E Tank, McClelland, James W., Robert GM Spencer, Aiken, George R., Mann, Paul, Johan Six, Kenna D. Butler, Peter J Hernes, Dyda, Rachael, Paul James Mann, Holmes, Robert M., Six, Johan, George R. Aiken, George R Aiken, Mann, Paul J., Dyda, Rachael Y, Peter J. Hernes, James W McClelland, Aiken, George   +38 more
core   +1 more source

Fault Classification in Power Transformers via Dissolved Gas Analysis and Machine Learning Algorithms: A Systematic Literature Review

Applied Sciences
In electrical power systems, from generation power stations down to distribution substations, power transformers play a key role in ensuring reliable electricity transfer in the correct range from the generating source to the end-users. Over time, due to
Vuyani M. N. Dladla, B. Thango
semanticscholar   +1 more source

Development of nominal rules on the Fuzzy Sugeno method to determine the quality of power transformer insulation oil using Dissolved Gas Analysis data

Jurnal Ilmiah SINERGI, 2023
This paper aims to develop the nominal rules on the Fuzzy Logic Method using the Sugeno-Fuzzy Inference System (FIS) for Dissolved Gas Analysis (DGA) and determine the quality of the power Transformer 1 and Transformer 6 insulating oil at the Buduran 150
Ha'imza Ha'imza, Amirullah Amirullah, Boonyang Plangklang   +2 more
doaj   +1 more source

Direct Measurement of Dissolved Gas Using a Tapered Single-Mode Silica Fiber

Sensors
Dissolved gases in the aquatic environment are critical to understanding the population of aquatic organisms and the ocean. Currently, laser absorption techniques based on membrane separation technology have made great strides in dissolved gas detection.
Panpan Sun, Mengpeng Hu, Licai Zhu, Hui Zhang, Jinguang Lv, Yu Liu, Jingqiu Liang, Qiang Wang   +7 more
doaj   +1 more source

Prediction Model for Dissolved Gas Concentration in Transformer Oil Based on Modified Grey Wolf Optimizer and LSSVM with Grey Relational Analysis and Empirical Mode Decomposition

Energies, 2020
Oil-immersed transformer is one of the most important components in the power system. The dissolved gas concentration prediction in oil is vital for early incipient fault detection of transformer.
Bing Zeng, Jiang Guo, Fangqing Zhang, Wenqiang Zhu, Zhihuai Xiao, Sixu Huang, Peng Fan   +6 more
doaj   +1 more source

Deep Machine Learning-Based Asset Management Approach for Oil- Immersed Power Transformers Using Dissolved Gas Analysis

IEEE Access
Reliable operation of oil-immersed power transformers is crucial for electrical transmission and distribution networks. However, the aging of high voltage assets including power transformers along with the increasing of load demand have heightened the ...
Lan Jin, Dowon Kim, K. Chan, A. Abu-Siada   +3 more
semanticscholar   +1 more source

Analisis Kualitas Minyak Trafo Menggunakan Data Dissolved Gas Analysis dan Water Content

Protek: Jurnal Ilmiah Teknik Elektro, 2018
Transformer is a vital equipment in the power system. If the transformer is damage, can cause the electrical distribution to the consumer will be disrupted. Therefore, it needs special maintenance the performance of the transformer to avoid damage.
Abdul Syakur, Fanny Rizka Savitri
doaj   +1 more source

Traditional fault diagnosis methods for mineral oil‐immersed power transformer based on dissolved gas analysis: Past, present and future

IET Nanodielectrics
A key factor in ensuring the efficient and safe operation of power transformers is the early and accurate diagnosis of incipient faults. Among the tools available to achieve this goal, dissolved gas analysis (DGA) is widely used by power transformers ...
Arnaud Nanfak, Eke Samuel, I. Fofana, F. Meghnefi, Martial Gildas Ngaleu, Charles Hubert Kom   +5 more
semanticscholar   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source