Results 11 to 20 of about 4,271 (214)
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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Analysis of operation of transformer differential protection under current transformer saturation: Software simulations and relay testing [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2021 In the paper the analyses of the current transformer saturation influence to operation of differential protection are presented. Analyses are performed using a simulation tool and a relay model, as well as using the physical relay by injecting test ...
Sučević Nikola +2 more
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Вестник Северо-Кавказского федерального университета, 2022 Despite the fact that the problem of saturation of current transformers (CT) has been known for a long time, it has not lost its relevance now. Cases of malfunctioning as a result of oversaturation of CT are still recorded today.
P. Shagimardanov
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Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2021 Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
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Bayesian Deep Neural Network to Compensate for Current Transformer Saturation
IEEE Access, 2021 Current transformer saturation has a negative effect on the operation of IEDs, resulting in their malfunction. Here, we present a technique to compensate for saturated waveforms using Bayesian Deep Neural Network (BDNN) comprising Deep Neural Network ...
Sopheap Key +3 more
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Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2022 Recently, there has been an increased interest in the use of artificial neural networks in various branches of the electric power industry including relay protection.
Yu. V. Rumiantsev, F. A. Romaniuk
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International Transactions on Electrical Energy Systems, 2022 This paper proposes a flexible digital control scheme for isolated phase-shift full-bridge (PSFB) converters. The required transformer suffers from inevitable imbalance of magnetic flux resulting in an increased magnetizing DC-offset current that ...
Angelika Neumann +4 more
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A High-Precision Error Calibration Technique for Current Transformers under the Influence of DC Bias
Energies, 2023 A bias current in the power system will cause saturation of the measuring current transformer (CT), leading to an increase in measurement error. Therefore, in this paper, we first conducted measurements of the direct current component in a 10 kV ...
Sanlei Dang +8 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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Research on Transient Low-Frequency Oscillation of Electrified Railway Vehicle-Grid Coupling System
IEEE Access, 2023 At the moment of electric locomotive passing the neutral-section, the voltage and current of traction network may have low-frequency oscillation (LFO), which will seriously affect the safe operation of the railway. Aiming at eliminating the transient LFO,
Zhiyong Li +4 more
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