Results 31 to 40 of about 4,985 (290)
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
doaj +1 more source
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
doaj +1 more source
Transformer Saturation Analysis and Mitigation for MMC-Based Grid Emulator
, 2023 The modular multilevel converter (MMC)-based grid emulator emerges as a favorable solution for testing and validation of medium-voltage high-power wind turbines.
Wang, Xiongfei; id_orcid +5 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
Transformer Core Saturation Fault Analysis using Current Sensor Signals and Thermal Image Features
Advances in Electrical and Computer Engineering, 2023 Transformer faults are identified and classified using current sensor signals. Transformer core saturation detection is challenging using current sensor signals due to overlapping of load-based faults such as overload, short circuit, grounding faults ...
VIDHYA, R. +2 more
doaj +1 more source
pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley +1 more source
Waveform dissimilarity factor-based protection for main transformers in wind farms
Energy Reports, 2023 Current differential protection (CDP) is widely used as main protection for transformers due to its high reliability and selectivity. Owing to non-fundamental frequency current, magnetizing inrush and current transformer (CT) saturation, CDP may undergo ...
Yingyu Liang +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
wiley +1 more source
Desempenho da proteção diferencial em transformadores de potência perante condições especiais de operação [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaRelés digitais vêm gradualmente substituindo os relés eletromecânicos porque são mais sensíveis, mais flexíveis e várias ...
Verney, Luiz Henrique Costa de
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