Results 21 to 30 of about 41,086 (208)
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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On fully superconducting rectifiers and fluxpumps. A review. Part 2: Commutation modes, characteristics and switches [PDF]
, 1981 This paper forms the second part of the review. Full and half wave superconducting transformer rectifiers are analysed. Modes of operation and loss mechanisms are detailed and a comparison between the behaviour of dynamos and rectifiers is presented ...
Kate, H.H.J. ten +1 more
core +2 more sources
Energies, 2020 Through the analysis of the recovery inrush current generated by the external fault removal of the converter transformer, it is pointed out that the zero-sequence current caused by the recovery inrush may result in the saturation of the neutral current ...
Tao Zheng +4 more
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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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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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The.main types of wind turbines-generators in the power supply system
Известия высших учебных заведений: Проблемы энергетики, 2022 THE PURPOSE. This paper considers the problem of relay protection functioning when the current transformer reaches the saturation mode which is provided by transient processes.METHODS. MATLAB Simulink software environment allows reproducing the method of
V. A. Novobritsky, D. S. Fedosov
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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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Parameter estimation of electric power transformers using Coyote Optimization Algorithm with experimental verification [PDF]
, 2020 In this work, the Coyote Optimization Algorithm (COA) is implemented for estimating the parameters of single and three-phase power transformers. The estimation process is employed on the basis of the manufacturer's operation reports.
Abaza, Amlak +4 more
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Analytical modeling and calculation of core grounding current in converter transformer
Frontiers in Energy Research, 2023 In recent years, the calculation of the core grounding current of the converter transformer is difficult, low precision, and time-consuming, especially when the core is grounded by multiple points.
Xiu Zhou +6 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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