Results 21 to 30 of about 7,340,685 (300)
High-Frequency Current Transformers Cascade for Power Electronics Measurements
Sensors, 2022 High-frequency current transformers (HFCT) are widely used to measure fast transient current. Their advantages are simple structure and relatively moderate price.
Maciej Chojowski +3 more
doaj +1 more source
Insulation Fault Caused by Current Transformer Seal Failure
Zhongguo dianli, 2020 Firstly, the insulation structures of oil-immersed current transformer (TA) and SF6 TA are introduced. And then, the causes of TA insulation breakdowns are analyzed based on an investigation of the insulation faults of TAs occurring in several cases.
Yuquan LI +7 more
doaj +1 more source
Energies, 2023 In this review article, ideas for the development of measuring methods and setups to test inductive instrument transformer accuracy for the transformation of distorted current or voltage are analyzed. This article proposes limiting values for ratio error
Michal Kaczmarek, Ernest Stano
doaj +1 more source
External Excitation of Axial Magnetic Field for Intermediate-Frequency Vacuum Arc Research
IEEE Access, 2019 In order to the make the magnetic field synchronous with the actual current in the current interruption experiment, an external excitation of axial magnetic field for intermediate-frequency vacuum arc experiment and research is designed and tested in ...
Yuan Jiang +5 more
doaj +1 more source
The Reference Wideband Inductive Current Transformer
Energies, 2023 The aim of this paper is to show that the developed inductive current transformer may ensure the required wideband transformation accuracy and it may be applied, as the reference source, in the measuring system for the evaluation of the transformation ...
Michal Kaczmarek +2 more
doaj +1 more source
Fast Detection of Current Transformer Saturation Using Stacked Denoising Autoencoders
Energies, 2023 Malfunctions in relay protection devices are predominantly caused by current transformer (CT) saturation which produces distortion in current measurements and disturbances in power system protection.
Sopheap Key +3 more
doaj +1 more source
A Novel Self-Powered Smart Current Sensor for Power Equipment
Elektronika ir Elektrotechnika, 2019 Current measurement is one of the most important work in online monitoring of the electric system. Self-powered and intelligence are key areas of the current measuring sensor.
Jie Ren +6 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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Bridging in contaminated transformer oil under DC and AC electric field
, 2013 One of the key components in high voltage transmission and distribution systems are power transformers and their consistent operation is of utmost importance to energy utilities and users.
Wilson, G +9 more
core +1 more source
CT Saturation Detection with Calculation of Instantaneous Impedance of Magnetic Branch Using FILT [PDF]
مجله مدل سازی در مهندسی, 2017 Accurate indiscrimination of CT saturation can be caused mal-operation of protection systems. Due to nonlinear and loss characteristic behavior of CTs, it is necessary to use a numerical method to detect CT saturation, accurately.
Alireza Fallahi +2 more
doaj +1 more source