Results 21 to 30 of about 115,222 (300)

Simulation results of the test set when internal branch CO of the T-connection transmission line exhibits CT saturation. [PDF]

open access: yes, 2023
Simulation results of the test set when internal branch CO of the T-connection transmission line exhibits CT saturation.
Yawen Zhong (2342206)   +4 more
core   +1 more source

Impact of CT saturation on overcurrent relays

open access: yesThe Journal of Engineering, 2018
An overcurrent relay analyses and processes the secondary currents from a set of current transformers (CTs) and if the currents exceed the operating threshold initiates the tripping of a circuit breaker after an appropriate time. An important issue for a protection relay is how it responds when the steel core of the CT is saturated. The exact behaviour
Yanjun Ma, Peter Crossley
openaire   +1 more source

Dual-energy CT scan protocol optimization to monitor transient fluid saturation distributions during three-phase flow in sand columns. [PDF]

open access: yes, 2022
Surfactant foam injection is a promising in situ remediation technique for aquifers impacted by Non-Aqueous Phase Liquids (NAPL). Though the viscous properties of foam can promote immiscible displacement, pore plugging by foam is a concern in an ...
Fitzhenry, Emily   +3 more
core   +1 more source

EVALUATION OF CURRENT SIGNALS AT OBSERVED POINTS OF THE ELECTRICAL NETWORK IN PROBLEMS OF IDENTIFICATION OF CURRENT TRANSFORMER SATURATION

open access: yesВестник Северо-Кавказского федерального университета, 2022
Despite the fact that the problem of saturation of current transformers (CT) has been known for a long time, it has not lost its relevance now. Cases of malfunctioning as a result of oversaturation of CT are still recorded today.
P. Shagimardanov
doaj   +1 more source

Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment

open access: yesJournal of Marine Science and Engineering, 2021
The occurrence of a shear band is often thought as the precursor of failure. To study the initiation of shear banding in gas hydrate-bearing sediments, two groups of triaxial compression tests combined with a CT (computer tomography) scan were conducted ...
Xiaobing Lu   +5 more
doaj   +1 more source

X-ray micro-CT scanning of planktic foraminiferal tests [PDF]

open access: yes, 2023
Evaluation of foraminiferal test dissolution in deep-sea sediments facilitates reconstruction of seawater chemistry. Here we observed test dissolution processes of the planktic foraminifera Globigerinoides sacculifer, Globigerinoides ruber, and ...
Kimoto, K   +3 more
core   +1 more source

Integrated busbar protection scheme utilizing a numerical technique based on coherence method

open access: yesThe Journal of Engineering, 2022
A Busbar (BB) is one of the most important elements of a power system, which links a variety of elements such as generators, power transformers, transmission lines and loads.
R. A. Mahmoud
doaj   +1 more source

A CT saturation detection algorithm using symmetrical components for current differential protection [PDF]

open access: yes, 2006
A method of symmetrical component analysis for the detection of current-transformer (CT) saturation in a numerical current differential feeder protection relay is presented in this paper.
Villamagna, Nicholas, Crossley, Peter A.
core   +1 more source

CT saturation test set prediction comparison. [PDF]

open access: yes, 2023
Though the traditional fault diagnosis method of T-connected transmission lines can identify the faults inside and outside the area, it can not identify the specific branches.
Yawen Zhong (2342206)   +4 more
core   +1 more source

History matching of CO2 core flooding CT scan saturation profiles with porosity dependent capillary pressure [PDF]

open access: yes, 2009
This paper presents a numerical simulation study of a CO2 core flooding test performed on a Tako sandstone sample, which measured 14.5 cm long and 3.68 cm in diameter.
Shi, Ji-Quan   +2 more
core   +1 more source

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