Testing and approval standard development of online dissolved gas analysis monitors for oil‐filled transformers—Part I hydrogen monitors
Sign Up to like & getrecommendations! Published in 2024 at "Process Safety Progress"
DOI: 10.1002/prs.12636
Abstract: The failure of mineral oil‐filled transformers has been involved in numerous fire and explosion incidents during operations. The power industry has developed online dissolved gas analysis (DGA) monitoring systems capable of diagnosing transformer faults continuously.… read more here.
Keywords: oil filled; gas analysis; approval standard; filled transformers ... See more keywords
Grey relational analysis using Gaussian process regression method for dissolved gas concentration prediction
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Machine Learning and Cybernetics"
DOI: 10.1007/s13042-018-0812-y
Abstract: The prediction of the dissolved gases content in an oil-immersed power transformer is very important for early fault detection. However, it is quite difficult to obtain accurate predictions due to the non-linearity of gas data.… read more here.
Keywords: gas; grey relational; method; relational analysis ... See more keywords
A DFT study of dissolved gas (C2H2, H2, CH4) detection in oil on CuO-modified BNNT
Sign Up to like & getrecommendations! Published in 2020 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2019.144030
Abstract: Abstract In this work, CuO modified BNNT surface was investigated by DFT calculation. We suppose that BNNT is a potential gas sensitive material. The modified model is present, and the combination between CuO and BNNT… read more here.
Keywords: modified bnnt; c2h2; gas; dissolved gas ... See more keywords
Improvement on numerical modeling of total dissolved gas dissipation after dam
Sign Up to like & getrecommendations! Published in 2020 at "Ecological Engineering"
DOI: 10.1016/j.ecoleng.2020.105965
Abstract: Abstract Discharge from high dam causes total dissolved gas (TDG) supersaturation, which dissipates slowly along the downstream river and induces fish bubble disease. The dissipation process is closely related to the hydraulic condition. In most… read more here.
Keywords: dam; value; dissolved gas; dissipation ... See more keywords
A turbulent two-phase model for predicting cavitating flow based on homogenous nucleation theory
Sign Up to like & getrecommendations! Published in 2018 at "International Communications in Heat and Mass Transfer"
DOI: 10.1016/j.icheatmasstransfer.2018.06.001
Abstract: Abstract Cavitation is important for good design and performance on engineering machinery, especially for devices such as injector nozzles. In this study, an enhanced cavitation model is proposed with the consideration of vapor transport, bubble… read more here.
Keywords: dissolved gas; model; nucleation theory; cavitation ... See more keywords
Thermally induced evolution of dissolved gas in water flowing through a carbon felt sample
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2017.01.097
Abstract: Abstract Carbon felts are widely used as flow through porous electrodes in great variety of electrochemical devices due to their superior electrochemical properties and low price. In plant-scale electrochemical reactors stacked with large carbon felt… read more here.
Keywords: carbon; evolution; water; gas ... See more keywords
Sonochemistry of aqueous NaAuCl4 solutions with C3-C6 alcohols under a noble gas atmosphere.
Sign Up to like & getrecommendations! Published in 2018 at "Ultrasonics sonochemistry"
DOI: 10.1016/j.ultsonch.2017.09.040
Abstract: The effect of the type of C3-C6 alcohol, solution temperature, and dissolved gas on the rate of Au(III) reduction was investigated in NaAuCl4 aqueous alcohol solution with a 200-kHz ultrasound irradiation system. It was confirmed… read more here.
Keywords: aqueous naaucl4; temperature; sonochemistry aqueous; gas ... See more keywords
How do dissolved gases affect the sonochemical process of hydrogen production? An overview of thermodynamic and mechanistic effects - On the "hot spot theory".
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics sonochemistry"
DOI: 10.1016/j.ultsonch.2020.105422
Abstract: Although most of researchers agree on the elementary reactions behind the sonolytic formation of molecular hydrogen (H2) from water, namely the radical attack of H2O and H2O2 and the free radicals recombination, several recent papers… read more here.
Keywords: free radicals; hydrogen; dissolved gases; dissolved gas ... See more keywords
Sampling Dissolved Gases in Groundwater at in Situ Pressure: A Simple Method for Reducing Uncertainty in Hydrogeological Studies of Coal Seam Gas Exploration
Sign Up to like & getrecommendations! Published in 2017 at "Environmental Science and Technology Letters"
DOI: 10.1021/acs.estlett.7b00457
Abstract: The ability to accurately and precisely measure dissolved gas concentrations in groundwater is crucial for environmental monitoring purposes. Unfortunately, the collection of dissolved gas samples in groundwater is challenging because of the loss of dissolved… read more here.
Keywords: seam gas; coal seam; situ pressure; gas ... See more keywords
Cu-Doped MoSe2 Monolayer: A Novel Candidate for Dissolved Gas Analysis in Transformer Oil
Sign Up to like & getrecommendations! Published in 2020 at "ACS Omega"
DOI: 10.1021/acsomega.0c04572
Abstract: Dissolved gas analysis (DGA) in transformer oil is a workable approach to evaluate the operation status of transformers. In this paper, we proposed a Cu-doped Se-vacancy MoSe2 (Cu-MoSe2) monolayer as a promising sensing material for… read more here.
Keywords: dissolved gas; analysis; mose2 monolayer; monolayer ... See more keywords
Assessment of Space Weather Impacts on New Zealand Power Transformers Using Dissolved Gas Analysis
Sign Up to like & getrecommendations! Published in 2024 at "Space Weather"
DOI: 10.1029/2023sw003607
Abstract: Space weather can have major impacts on electrical infrastructure. Multiple instances of transformer damage have been attributed to geomagnetic storms in recent decades, for example, the Hydro Quebec incident of 1989 and the November 2001… read more here.
Keywords: new zealand; space weather; analysis; dissolved gas ... See more keywords