Results 21 to 30 of about 114,627 (294)

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

Вестник 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

Journal 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, Xuhui Zhang, Fangfang Sun, Shuyun Wang, Lele Liu, Changling Liu   +5 more
doaj   +1 more source

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

The 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

X-ray CT images of HBS for saturation exponent

, 2020
X-ray CT images of xenon-hydrate-bearing alumina balls packing; Used to extract fractal dimensions for electrical property analyses; In order to figure out the physical connections behind pore structures and saturation exponent in Archie's ...
Lele Liu (7404866)
core   +1 more source

PLA Films Containing Montmorillonite Nanoclay–Citronella Essential Oil Hybrids for Potential Active Film Formulation

Macromol, 2023
This work evaluated the synergistic effect of citronella essential oil (Ct) and montmorillonite (MMT) (called hybrid compound) incorporated in Poly(lactic acid) (PLA) films at different concentrations (3, 10, 15, and 20 wt%). PLA films were characterized
Rafaela R. Ferreira, Marilia C. Farina, Anderson Maia, Rondes F. S. Torin   +3 more
doaj   +1 more source

The test bench for simulation impact of core saturation on the current transformer on coordination of inverse relay protection [PDF]

E3S Web of Conferences
When the measurement-type Current Transformer (CT) is used for protection schemes, this condition causes problems related to the operation of the protection relay.
Supriyanto, Utomo Heri Budi, Sunarto
doaj   +1 more source

Investigation of the relationship of CO-RADS and CT patterns with laboratory parameters in COVID-19 patients and a new perspective on the total CT scoring system

BMC Medical Imaging, 2022
Background It is important to determine the correlation of the CO-RADS classification and computed tomography (CT) patterns of the lung with laboratory data.
Nevin Aydin, Pinar Yildiz, Döndü Üsküdar Cansu, Elif Gündogdu, Rüya Mutluay, Göknur Yorulmaz, Melisa Sahin Tekin, Evin Kocaturk, İ. Özkan Alatas, Elif Doyuk Kartal, Nurettin Erben, Gül Durmaz, Nilgun Kasifoglu, Tercan Us, Garip Sahin, Cengiz Bal, Senay Yilmaz, Cengiz Korkmaz   +17 more
doaj   +1 more source

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

, 2023
Simulation results of the test set when internal branch CO of the T-connection transmission line exhibits CT saturation.
Yawen Zhong (2342206), Sheng Wang (339979), Sijing Deng (13851249), Jie Yang (121778), Liang Hu (202392)   +4 more
core   +1 more source

A Time-Domain Pilot Protection for AC Transmission Lines Connecting BESSs Based on Sequence Matching Index

Elektronika ir Elektrotechnika
Battery energy storage station (BESS) possesses flexible operating states and complex fault characteristics. With the continuous increase in its installed capacity and number, the risk of maloperation of traditional relay protection significantly ...
Ping Xiong, Xiaoqian Zhu, Xing Wang, Lie Li, Yifan Zhao, Xiaoyang Yang   +5 more
doaj   +1 more source

Longitudinal assessment of chest computerized tomography and oxygen saturation for patients with COVID-19

The Egyptian Journal of Radiology and Nuclear Medicine, 2020
Background COVID-19 is a pandemic disease and is important to know the nature of the disease during follow-up. We aimed to study different imaging signs and changes that occurred during the initial scan, follow-up, and complications.
Ahmed M. Osman, Suzan Farouk, Nehad M. Osman, Ahmed M. Abdrabou   +3 more
doaj   +1 more source