Results 21 to 30 of about 28,360 (309)

Efficient practical method for differential protection of power transformer in the presence of the fault current limiters

open access: yesIET Generation, Transmission & Distribution, 2023
The algorithms of the present generation of practical differential relays are based on two methods. The first method is based on the ratio of the harmonic content of the differential current, and the second one is based on the length of the time interval
Ali Sahebi   +4 more
doaj   +1 more source

Nonintrusive overhead‐line current detection using a vertical magnetic‐field sensor array

open access: yesIET Generation, Transmission & Distribution, 2023
With the growing infrastructure for overhead lines, the demand for overhead‐line condition‐monitoring technologies has become increasingly urgent. Traditional current transformers used to measure three‐phase currents are bulky and difficult to install ...
Kun‐Long Chen   +2 more
doaj   +1 more source

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

open access: yesIEEE Open Journal of Power Electronics, 2022
In both planar and wire-wound transformers, large copper cross-sections and parallel windings are often used to increase conduction area and decrease copper loss.
Michael Solomentsev, Alex J. Hanson
doaj   +1 more source

A New Wall Current Transformer for Accurate Beam Intensity Measurements in the Large Hadron Collider

open access: yesEnergies, 2023
The Large Hadron Collider (LHC) stores two high-energy counter-rotating particle beams consisting of multiple bunches of a nanosecond length. Precise knowledge of the number of particles within each bunch, known as the bunch intensity, is crucial for ...
Michal Krupa, Marek Gasior
doaj   +1 more source

Research and application of UHV power transmission in China

open access: yesHigh Voltage, 2018
The power demand increases rapidly in China; however, the areas of huge power demands are of long distance from most areas of abundant energy resource in the country. Therefore, China put in great effort to develop
Yinbiao Shu, Weijiang Chen
doaj   +1 more source

Research on the performance of green and environmentally friendly epoxy resin impregnated paper 110 kV current transformer

open access: yesAIP Advances, 2023
As an important high-voltage electrical equipment in the substation, the performance stability of high-voltage current transformers is directly related to the safe operation of the power grid. The insulating medium of the traditional oil-immersed current
Zhao Fang   +6 more
doaj   +1 more source

Fiber Bragg Grating Sensor for Fault Detection in Radial and Network Transmission Lines

open access: yesSensors, 2010
In this paper, a fiber optic based sensor capable of fault detection in both radial and network overhead transmission power line systems is investigated.
Mehdi Shadaram, Amin A. Moghadas
doaj   +1 more source

Effect of CT transient characteristics on transfer of inrush

open access: yesThe Journal of Engineering, 2019
During the inrush period, multiple misoperation accidents of differential protection of transformers happened, which seriously threatened the safe and stable operation of power grid.
Wei Liu   +5 more
doaj   +1 more source

New optical differential protection algorithm applied in bus protection

open access: yesThe Journal of Engineering, 2018
In order to improve the speed and reliability of bus protection, people put forward the optical current transformer (OCT) replaced the traditional electric–magnetic current transformer.
Zhu Sitong   +4 more
doaj   +1 more source

Review of methodologies used for detection of magnetising inrush and fault conditions in power transformer

open access: yesIET Energy Systems Integration, 2021
Reliable and dedicated protection of the transformer is the main requirement in the power system due to the supervision of a highly expensive equipment transformer. Non‐linear characteristics of the transformer give mysterious behaviour for the period of
Maulik Raichura   +2 more
doaj   +1 more source

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