Results 41 to 50 of about 40,759 (164)
On the Calibration of Direct-Current Current Transformers (DCCT) [PDF]
IEEE Transactions on Instrumentation and Measurement, 2015 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 resistance calibration laboratories.
CALLEGARO, LUCA +2 more
openaire +3 more sources
The Performance of a Passive Autoranging Method for a Photonic Current Transducer
SensorsThis paper reports on the testing and evaluation of a passive autoranging (AR) method designed to dynamically extend the measurement range of a photonic current transducer (PCT) to pave the way toward a realization of a combined metering- and protection ...
Grzegorz Fusiek +2 more
doaj +1 more source
Cogent Engineering, 2016 The accuracy of the current transformers (CTs) supplying the generator differential relay is essential in power plant stations. One important factor which decreases the CT accuracy is the stray flux originated from the adjacent phases.
Hadi Givi +2 more
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Research of a New Criterion of Main Protection of Transformer
Gong-kuang zidonghua, 2012 In view of problems that traditional main protection of transformer cannot identify inrush current and internal fault current of transformer, the paper proposed a new criterion of main protection of transformer based on dead angle of differential current.
HE Ren-wang +3 more
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EnergiesAccurate electric current measurement is fundamental to the safe and efficient operation of modern power systems. Current transformers (CTs), which serve as a critical interface between high-voltage power networks and measuring or protection devices, are
Krzysztof Tomczyk +3 more
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IEEE AccessThe protection relay performs a significant role in maintaining the power system’s reliability and stability. However, Current Transformer (CT) saturation affects the overcurrent, differential and distance protection under various conditions ...
Nilesh Chothani, Swapnil Kumar
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MathematicsTo provide information support for relay protection and emergency automation algorithms, electromagnetic measuring voltage and current transformers are most often used.
Ismoil Odinaev +5 more
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Electrical engineering & Electromechanics, 2016 Features of the data processing procedures of multiple measurements of the dielectric loss tangent of the high-voltage insulation, which are based on the comparison method, were considered.
V. K. Beliaev, H. N. Panenko
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Optimizing Bipolar Current Transformer Arrays for Sustainable Energy Harvesting in Smart Grids
IEEE Open Access Journal of Power and EnergyEnvironmental energy harvesting from magnetic fields offers a sustainable power solution for smart grid sensors. This study optimizes bipolar current transformer arrays for enhanced energy harvesting from microcurrents to meet load requirements. Based on
Shiyezi Xiang +6 more
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Analysis of relay protection action of grounding fault of no-load charging of a 330 kV transformer
Gong-kuang zidonghua, 2013 In view of problem that a 330 kV start-up standby transformer took place relay protection action in no-load charging, the paper indicated that the action was caused by grounding fault of A-phase current transformer through analyzing charging current ...
LYU Bin +3 more
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