Results 31 to 40 of about 33,274 (252)

HTS transformer and its related loss measurement and quench protection techniques [PDF]

open access: yes, 2008
Recently research and development concerning applications of high temperature superconducting (HTS) transformers have been progressed actively in the world.
Chen, X, Guo, Y, Jin, J, Zhan, Y, Zhu, J
core   +1 more source

Challenges of Accurate Measurement of Distorted Current and Voltage in the Power Grid by Conventional Instrument Transformers

open access: yesEnergies, 2023
Power grids are a combined system where the electrical energy produced by the power plants is transmitted to consumers. This forms a specific interdependence where the recipients have a significant impact on the power quality.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

Impact of DC Transient Disturbances on Harmonic Performance of Voltage Transformers for AC Railway Applications

open access: yesSensors, 2022
This paper analyzes the impact of typical DC transient events occurring in railway grids on the frequency performance of instrument transformers (ITs) installed onboard trains and in AC substations for power quality (PQ) applications.
Palma Sara Letizia   +2 more
doaj   +1 more source

On the calibration of direct-current current transformers [PDF]

open access: yes, 2014
Modern commercial direct-current current transformers (DCCT) can measure currents up to the kA range with accuracies better than 1E-5. We discuss here a DCCT calibration method and its implementation with commercial instruments typically employed in low ...
Callegaro, Luca   +2 more
core   +2 more sources

Simplifying Rogowski Coil Modeling: Simulation and Experimental Verification

open access: yesSensors, 2023
The integration of renewable energy sources, electric vehicles, and other electrical assets has introduced complexities in monitoring and controlling power networks.
Alessandro Mingotti   +3 more
doaj   +1 more source

Medium voltage digital instrument transformer [PDF]

open access: yesE3S Web of Conferences
Instrument transformers with digital output provides significant advantages, including those related to increased reliability of power system operation.
Ulyanov Dmitriy, Plakidin Roman
doaj   +1 more source

A Simple Method for Compensating Harmonic Distortion in Current Transformers: Experimental Validation

open access: yesSensors, 2021
Conventional current transformers (CTs) suffer from nonlinearities due to their ferromagnetic cores. On one hand, it is well-known that severe core saturation may occur because of large overcurrents or unidirectional transient components: this may ...
Christian Laurano   +2 more
doaj   +1 more source

AutoDiscern: Rating the Quality of Online Health Information with Hierarchical Encoder Attention-based Neural Networks [PDF]

open access: yes, 2020
Patients increasingly turn to search engines and online content before, or in place of, talking with a health professional. Low quality health information, which is common on the internet, presents risks to the patient in the form of misinformation and a
Allam, Ahmed   +2 more
core   +2 more sources

Internal Arc Performance of Instrument Transformers Filled with Different Dielectric Liquids

open access: yesEnergies
Internal arc testing is still a controversial topic in the instrument transformer world. The main reason for that is the fact that even a fully successful test guarantees only a certain degree of transformer safety. Furthermore, the test does not cover a
Ivan Mihoković   +3 more
doaj   +1 more source

Using the next generation combined digital transformers [PDF]

open access: yesE3S Web of Conferences, 2020
The paper considers and analyzes the use of new generation combined digital instrument transformers (DIT) with an optoelectronic conversion unit and a combining module or a stand-alone combining module, an external synchronization source or an internal ...
Yusupova Angela   +2 more
doaj   +1 more source

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