Results 31 to 40 of about 727 (167)

Predicting Missing Value Data on IEC TC10 Datasets for Dissolved Gas Analysis using Tertius Algorithm

Journal of Applied Informatics and Computing, 2023
IEC TC10 is the most widely used Dissolved Gas Analysis (DGA) measurement dataset nowadays. Many DGA-based studies have been carried out using conventional methods and methods based on Artificial Intelligence Techniques (AITs).
Noper Ardi, Supardianto S, Ahmadi Irmansyah Lubis   +2 more
doaj   +1 more source

Feature Selection and Classification of Transformer Faults Based on Novel Meta-Heuristic Algorithm

Mathematics, 2022
Detecting transformer faults is critical to avoid the undesirable loss of transformers from service and ensure utility service continuity. Transformer faults diagnosis can be determined based on dissolved gas analysis (DGA).
El-Sayed M. El-kenawy, Fahad Albalawi, Sayed A. Ward, Sherif S. M. Ghoneim, Marwa M. Eid, Abdelaziz A. Abdelhamid, Nadjem Bailek, Abdelhameed Ibrahim   +7 more
doaj   +1 more source

Water‐Energy Nexus: Benchmarking the Energy Efficiency of Drinking Water Treatment Plants Accounting for Heterogeneity

Sustainable Development, EarlyView.
ABSTRACT The assessment of energy efficiency in water facilities is receiving increasing attention as a key strategy in the transition toward an energy‐neutral urban water cycle. This study evaluates the energy efficiency of 146 drinking water treatment plants (DWTPs) in Chile by applying a latent class stochastic frontier analysis (LCSFA) to account ...
Alexandros Maziotis, Maria Molinos‐Senante   +1 more
wiley   +1 more source

Analisis Kualitas Isolasi Minyak Transformator 375 MVA dengan Interpretasi Rasio Roger, Segitiga Duval, Breakdown Test, dan Water Content Test

Teknik, 2019
Transformator merupakan peralatan utama dalam pemasokan listrik dari unit pembangkitan menuju konsumen. Oleh karena itu, perlu perhatian khusus dalam pemeliharaan kinerja transformator agar tidak terjadi kerusakan pada transformator.
Abdul Syakur, Wildan Lazuardi
doaj   +1 more source

Power Transformer Fault Diagnosis Based on Dissolved Gas Analysis by Correlation Coefficient-DBSCAN

Applied Sciences, 2020
The transformers work in a complex environment, which makes them prone to failure. Dissolved gas analysis (DGA) is one of the most important methods for oil-immersed transformers’ internal insulation fault diagnosis.
Yongxin Liu, Bin Song, Linong Wang, Jiachen Gao, Rihong Xu   +4 more
doaj   +1 more source

Dissolved Gas Analysis and Application of Artificial Intelligence Technique for Fault Diagnosis in Power Transformers: A South African Case Study

Energies, 2022
In South Africa, the growing power demand, challenges of having idle infrastructure, and power delivery issues have become crucial problems. Reliability enhancement necessitates a life-cycle performance analysis of the electrical power transformers.
Bonginkosi A. Thango
doaj   +1 more source

Evaluation Methodology, Numerical Verification and Retrofilling Procedure for Power Transformers to Ensure K‐Class Flame Retardancy and Environmentally Friendly

High Voltage, EarlyView.
ABSTRACT With increasing demands for fire safety and environmental friendliness, retrofilling transformers with alternative insulating liquids has become a growing trend. However, retrofilling power transformers remains uncertain, as more residual mineral oil compromises K‐class flame retardancy, and its impact on environmental performance has yet to ...
Zhenfu Tang, Yihua Qian, Dan Zhou, Wei Hu, Feipeng Wang, Yang Xu   +5 more
wiley   +1 more source

Diffusion of Characteristic Gases in Oil‐Immersed Transformer by Computational Fluid Dynamics Simulation and Experimental Verification

High Voltage, EarlyView.
ABSTRACT The complex diffusion of characteristic gases within oil‐immersed transformers significantly influences the timeliness between the fault occurrence and gas detection. So far, the gas transport processes and spatio‐temporal distributions remain inadequately understood.
Chunpeng Li, Yuan Li, Jianyi Wang, Zhengqin Zhou, Zhihao Liu, Zhiqiu Chen, Dongyang Zheng, Guanjun Zhang   +7 more
wiley   +1 more source

ANALISIS KARAKTERISTIK MINYAK TRANSFORMATOR MENGGUNAKAN PENGUJIAN DISSOLVED GAS ANALYSIS (DGA) PADA IBT 1 GARDU INDUK

Foristek, 2022
Electrical energy is an important factor to support people's lives. Electrical energy from the generator is channeled through a transmission line to the substation. Transformer (transformer) is a very important equipment in the electric power system. Inside there is oil which functions as an insulating medium and also as a cooling medium.
Agus Siswanto, Abdul Rohman, Sugeng Suprijadi, Mudofar Baehaqi, Arifudin Arifudin   +4 more
openaire   +1 more source

Phosphorus addition shifts elevated CO2 effects on soil respiration from rhizosphere to root pathways in a mature eucalypt woodland

New Phytologist, EarlyView.
Summary diagram of the utilization of additional carbohydrates fixed under elevated CO2 belowground in natural low‐phosphorus (P) (a) and P‐fertilized (b) conditions. Soil respiration consists of heterotrophic respiration from microbial activity in bulk soil, autotrophic respiration from fine‐root activity and rhizomicrobial respiration driven by ...
Min Zhao, Qi Jiang, Catriona A. Macdonald, David T. Tissue, Wen Wen, Juan Piñeiro, Nam Jin Noh, Elise Pendall, Benjamin Smith, David S. Ellsworth, Mingkai Jiang, Belinda E. Medlyn   +11 more
wiley   +1 more source