Results 271 to 280 of about 162,004 (308)
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IEEE Transactions on Magnetics, 2015
Inductive instrument transformers are widely-used to measure currents in the power grid. Harmonics currents increase due to the proliferation of nonlinear equipment in the power grid. At higher frequencies, eddy currents inside the core increase, causing a change of the electrical parameters of the current instrument transformer (CT).
C. Jaschke, P. Schegner
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Inductive instrument transformers are widely-used to measure currents in the power grid. Harmonics currents increase due to the proliferation of nonlinear equipment in the power grid. At higher frequencies, eddy currents inside the core increase, causing a change of the electrical parameters of the current instrument transformer (CT).
C. Jaschke, P. Schegner
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, 2020
This paper presents applications of partial discharge sensing devices for detecting a partial discharge location in a cable. Three devices are under investigated.
B. Paophan, P. Yutthagowith, A. Kunakorn
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This paper presents applications of partial discharge sensing devices for detecting a partial discharge location in a cable. Three devices are under investigated.
B. Paophan, P. Yutthagowith, A. Kunakorn
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Effect of temperature on the accuracy of inductive current transformers
2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2018The paper deals with the evaluation of the accuracy variation of inductive current transformers vs. ambient temperature. There is a lack of information regarding if and how the accuracy of inductive current transformers changes with respect to temperature variations. To this purpose, in this paper a proper setup is presented and used for evaluating the
Mingotti, Alessandro +3 more
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Electric Power Systems Research, 2014
Abstract The aim of the paper is to present results explaining the phenomena of the inductive current transformers (CTs) metrological properties deterioration for the transformation of the distorted currents. In the article the influence of the conductive disturbances on their accuracy of transformation of the distorted signal is described.
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Abstract The aim of the paper is to present results explaining the phenomena of the inductive current transformers (CTs) metrological properties deterioration for the transformation of the distorted currents. In the article the influence of the conductive disturbances on their accuracy of transformation of the distorted signal is described.
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IEEE International Conference on Condition Monitoring and Diagnosis, 2022
This study aims to establish an insulation diagnosis technique using partial discharge (PD) detection for cast resin transformers (CRTr). In the previous paper, the frequency components of PD current in a PD test of a CRTr by applying AC voltage between ...
Ryota Koresawa +8 more
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This study aims to establish an insulation diagnosis technique using partial discharge (PD) detection for cast resin transformers (CRTr). In the previous paper, the frequency components of PD current in a PD test of a CRTr by applying AC voltage between ...
Ryota Koresawa +8 more
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IEEE transactions on power electronics, 2021
The characteristic of constant-current output (CCO) and constant-voltage output (CVO) on full-bridge topology can be realized by using a traditional double-sided LCC compensation network.
Rui Yue +3 more
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The characteristic of constant-current output (CCO) and constant-voltage output (CVO) on full-bridge topology can be realized by using a traditional double-sided LCC compensation network.
Rui Yue +3 more
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International Instrumentation and Measurement Technology Conference, 2020
This paper presents an experimental study on inductive current transformers. Their modelling is still a key topic among their literature and the related studies are quite vivid.
A. Ghaderi +3 more
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This paper presents an experimental study on inductive current transformers. Their modelling is still a key topic among their literature and the related studies are quite vivid.
A. Ghaderi +3 more
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Design of a Megawatt-Scale IGCT-Based Medium-Voltage Direct Current Transformer
IEEE transactions on power electronicsThis article presents a robust design of a megawatt-scale medium-voltage (MV) direct current transformer (DCT) that features a bidirectional LLC resonant converter topology.
Rui Wang, Nikolina Djekanovic, D. Dujić
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2024 10th International Conference on Electrical Engineering, Control and Robotics (EECR)
During the small inductive current switching test of high-voltage AC disconnector, the short-circuit impedance of the power frequency test transformer leads to the phenomenon of voltage rise on the power supply side of high-voltage AC disconnector after ...
Meng Shen +7 more
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During the small inductive current switching test of high-voltage AC disconnector, the short-circuit impedance of the power frequency test transformer leads to the phenomenon of voltage rise on the power supply side of high-voltage AC disconnector after ...
Meng Shen +7 more
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Overvoltages caused by the interruption of small inductive transformer currents
IEEE Transactions on Power Systems, 1988The interruption of small inductive currents can cause high overvoltages, which may overstress the dielectric strength of the equipment. Based on detailed dynamic models for the circuit breaker and the transformer, a variety of parameters which influence these overvoltages is systematically investigated by digital simulation.
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