Results 31 to 40 of about 40,759 (164)
Materials Research, 2005 Based on electrical and magnetic properties, such as saturation magnetization, initial permeability, and coercivity, in this work are presented some considerations about the possibilities of applications of nanocrystalline alloys in toroidal cores for ...
Benedito Antonio Luciano +3 more
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IEEE AccessA current transformer (CT) is a specialized device used to reduce high current values to safe and manageable levels in measurement and protection systems. Current ratio error (CRE) is an inevitable error in CTs due to factors such as magnetic saturation,
Ishak Ozer, Ali Unluturk
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Zhongguo dianli, 2023 Since the fault current output from the doubly-fed wind farm has frequency deviation characteristics and contains large harmonic components, when an internal fault occurs in the transmission transformer for the doubly-fed wind farm, the ratio of the ...
Yanchun XU +3 more
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Polytechnic and design, 2018 U ovom radu opisani su fenomeni i problemi do kojih dolazi prilikom priključenja transformatora na elektroenergetsku mrežu. Prilikom direktnog priključenja transformatora na mrežu (čak i u praznom hodu) dolazi do pojave visokih tranzijentnih iznosa struje koja može imati razne negativne posljedice. Tranzijentna struja može imati iznos i do desetak puta
Meštrović, Zvonimir +2 more
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Non-Sinusoidal Loading Effect on Oil Immersed Power Transformers [PDF]
Engineering and Technology Journal, 2011 Transformers are usually designed for nominal frequency and sinusoidal load current. Nowadays, usage of non-linear loads such as power electronics loads has extremely increased.
Mohammed k.Edan
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An aspect of transformer inrush current
Journal of Energy - Energija, 2022 Paper analyzes a sparking phenomena that were observed on power transformers during their first few energizing. Sparks occurred on the flange between tank cover and tank side, in spite of the fact that a jumper (copper link) was used. The phenomenon was observed on transformers from different manufacturers, with various transformer ratings, three or ...
Šulc, Ivan +2 more
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Detection of Current Transformer Saturation Based on Machine Learning
MathematicsOne of the tasks in the operation of electric power systems is the correct functioning of the protection system and emergency automation algorithms. Instrument voltage and current transformers, operating in accordance with the laws of electromagnetism ...
Ismoil Odinaev +5 more
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Digital Current Measurement Element for Operation During Current Transformer Severe Saturation
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2018 The development and implementation of a digital current measurement element for proper operation during current transformer (CT) magnetic core severe saturation are considered.
Yu. V. Rumiantsev +3 more
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The two-stage current transformer [PDF]
Journal of the American Institute of Electrical Engineers, 1922 This paper presents a brief discussion of the current transformer as used with measuring and controlling apparatus with special reference to the degree of accuracy which can be attained in the ratio and phase angle. A new type of current transformer is then described, in which it is possible to secure much higher accuracy with a given amount of iron ...
H. B. Brooks, F. C. Holtz
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Transformer Core Saturation Fault Analysis using Current Sensor Signals and Thermal Image Features
Advances in Electrical and Computer Engineering, 2023 Transformer faults are identified and classified using current sensor signals. Transformer core saturation detection is challenging using current sensor signals due to overlapping of load-based faults such as overload, short circuit, grounding faults ...
VIDHYA, R. +2 more
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