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Diagnostic Simplexes for Dissolved-Gas Analysis [PDF]
Energies, 2020 A Duval triangle is a diagram used for fault type identification in dissolved-gas analysis of oil-filled high-voltage transformers and other electrical apparatus.
James Dukarm +2 more
doaj +4 more sources
Research progress of online monitoring techniques for dissolved gas analysis in insulating oil [PDF]
Frontiers in ChemistryDissolved gas analysis (DGA) in insulating oil can achieve early warning of local discharge, overheating or arc failure in transformers. It can also quantitatively evaluate the aging degree of insulating equipment, providing a basis for formulating ...
Hua Mao +13 more
doaj +2 more sources
Impact of Load Ramping on Power Transformer Dissolved Gas Analysis [PDF]
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 +6 more
doaj +3 more sources
Dissolved Gas Analysis Equipment for Online Monitoring of Transformer Oil: A Review. [PDF]
Sensors (Basel), 2019 Power transformers are the most important assets of electric power substations. The reliability in the operation of electric power transmission and distribution is due to the correct operation and maintenance of power transformers. The parameters that are most used to assess the health status of power transformers are dissolved gas analysis (DGA), oil ...
Bustamante S +5 more
europepmc +6 more sources
A Review of Dissolved Gas Analysis in Power Transformers
Energy Procedia, 2012 AbstractDissolved gas analysis (DGA) of transformers can provide insights into thermal and electrical stresses sustained by oil-immersed power transformers. Because it detects incipient transformer faults, DGA can help prevent further damage. Moreover, DGA is a sensitive and reliable technique for detecting incipient fault conditions in oil-immersed ...
Sun, Huo-Ching +2 more
exaly +2 more sources
Optimal Data Selection Rule Mining for Transformer Condition Assessment
IEEE Access, 2021 The condition of the transformer can be accurately assessed based on dissolved gas online monitoring and analysis technology. With the widespread use of Dissolved Gas Analysis (DGA) technology, a large amount of dissolved gas time series data is obtained
Peng Zhang +6 more
doaj +1 more source
Applied Sciences, 2022 The dissolved gas concentration in a stirred tank has significant importance in the chemical and biological processing industries as mass transfer from the injected gas to an aqueous solution must occur for the gas to be usable.
Youngwook Lim +3 more
doaj +1 more source
Gas Losses in Transformers—Influences and Consideration
IEEE Access, 2023 Dissolved gas analysis (DGA) is frequently used for the condition assessment and monitoring of transformers. In the case of free-breathing transformers, gas losses may occur at the phase interface due to the chaotic molecular movement of the dissolved ...
Christof Riedmann +3 more
doaj +1 more source
Emitter: International Journal of Engineering Technology, 2022 Fault detection in the incipient stage is necessary to avoid hazardous operating conditions and reduce outage rates in transformers. Fault-detected dissolved gas analysis is widely used to detect incipient faults in oil-immersed transformers. This paper
Mauridhi Hery Purnomo +4 more
doaj +1 more source
Release of CO2 and CH4 from lakes and drainage ditches in temperate wetlands [PDF]
, 2010 Shallow fresh water bodies in peat areas are important contributors to greenhouse gas fluxes to the atmosphere. In this study we determined the magnitude of CH4 and CO2 fluxes from 12 water bodies in Dutch wetlands during the summer season and studied ...
Berendse, F. +4 more
core +18 more sources