Results 41 to 50 of about 470,664 (315)
The Journal of Engineering, 2019 In hierarchically connected UHV DC projects, the 1000 kV AC filter sub-bank in converter station is provided with two 500 kV circuit breakers. To determine the test DC component decay time constant when breakers break short-circuit current, relevant DC ...
Li Zhenqiang +3 more
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Study on the Influence of Reignition on Electrical Life Distribution of Low-Voltage Circuit Breakers
IEEE Access, 2021 This study analyzes the recovery voltage changes when a low-voltage circuit breaker opens with load and short-circuit faults and explains the reignition types under different recovery voltages.
Zhengjun Liu +2 more
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E3S Web of Conferences, 2017 This paper discusses the problem associated with accidents in the aerial line (AL) ultra-high voltage (UHV) due to its big length. In lines with a voltage of 500-1150 kV the overwhelming proportion of trips (98%) is caused by single-phase short circuit ...
Krasil'nikova Tatyana, Jononaev Saiyod
doaj +1 more source
A multifunctional dynamic voltage restorer for power quality improvement [PDF]
, 2018 Power quality is a major concern in electrical power systems. The power quality disturbances such as sags, swells, harmonic distortion and other interruptions have an impact on the electrical devices and machines and in severe cases can cause serious ...
Dung, Vo Tien +2 more
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IEEE Access, 2020 This paper studies a real 36-MW large tubular hydro-generator to solve the transient variation problem of the loss and heat of damper bars during short circuit faults in tubular hydro-generators.
Qing-Ling Hu +7 more
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International Journal of Electrical Power & Energy Systems, 2022 Abstract Due to the growing diffusion of single-phase Photovoltaic Systems (PVSs), the analysis of active unbalanced three-phase 4-wire distribution networks in short-circuit operating conditions is nowadays of great interest. However, this analysis is not trivial due to various factors (e.g., environmental conditions, inverter control system, limits
Bracale, Antonio +4 more
openaire +2 more sources
Reversible hydration of CH(3)NH(3)Pbl(3) in films, single crystals, and solar cells [PDF]
, 2015 Solar cells composed of methylammonium lead iodide perovskite (MAPI) are notorious for their sensitivity to moisture. We show that (i) hydrated crystal phases are formed when MAPI is exposed to water vapor at room temperature and (ii) these phase changes
Azarhoosh, P +11 more
core +1 more source
Analysis of Voltage Sag Due to Short Circuit on the Sub System in Central Sumatera
International Journal of Electrical, Energy and Power System Engineering, 2018 Power quality is closely related to electrical energy which is directly related to voltage and current interference. Electrical equipment used daily requires good power quality. The thing that affects the quality of the power is the voltage dip. Based on
Hamzah Eteruddin +2 more
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Single‐cell insights into the role of T cells in B‐cell malignancies
FEBS Letters, EarlyView.Single‐cell technologies have transformed our understanding of T cell–tumor cell interactions in B‐cell malignancies, revealing new T‐cell subsets, functional states, and immune evasion mechanisms. This Review synthesizes these findings, highlighting the roles of T cells in pathogenesis, progression, and therapy response, and underscoring their ...
Laura Llaó‐Cid
wiley +1 more source
Research on Safety Technology for High-Speed Interruption for Mining Flameproof Movable Substation
Energies, 2020 Due to the working condition of low-voltage cabling from the mining flameproof movable substation to the loads of the mining face being poor, it is easy to cause various external mechanical damages to the cable sheaths.
Yanwen Wang +3 more
doaj +1 more source