Results 31 to 40 of about 934 (179)

Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System

open access: yesEnergies, 2022
High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which ...
Jixing Sun   +5 more
doaj   +1 more source

Laser‐Textured Field‐Engineered Interface for Robust Dry‐Processed Cathodes in Lithium‐Ion Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Laser‐patterned dry electrodes applied to current collectors could serve as a promising alternative to the limitations of conventional dry electrodes. Laser technology provides a fast and simple method to enhance the surface roughness of current collectors, improving the adhesion at the electrode–current collector interface.
Chaerin Jung   +8 more
wiley   +1 more source

DEVELOPMENT OF AUTOMATION OF PROTECTION OF THE HOME ELECTRICITY OF POWER-PLANTS [PDF]

open access: yesBiomedicinskaâ Inženeriâ i Èlektronika, 2017
The main types and classification of safety fuses are considered. The advantages of a grid protection network against overload are highlighted. The methodology and the scheme of the home network protection automaton from overload are presented.
Novikova L.V.   +2 more
doaj   +1 more source

Correlated Transient Response of Buried Cables and Lightning Channel Radiation of Return Strokes of Five Rocket‐Triggered Lightning Strikes

open access: yesHigh Voltage, EarlyView.
ABSTRACT Data from five rocket‐triggered lightning flashes are adopted to analyse the correlated transient response of buried cables and lightning channel radiations. These five flashes have the same termination point that is right above the buried cables and involve a total of 32 return strokes.
Mi Zhou   +9 more
wiley   +1 more source

Probe on Problems of Combined Overvoltage Protector in Lightning Protectio

open access: yesGong-kuang zidonghua, 2012
The paper analyzed accidents in application of combined overvoltage protector in a substation in Yangquan mining area of Shanxi province and a pumped storage power station in Hubei province. It introduced principle and working characteristics of combined
YI Xiao-fei   +3 more
doaj  

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

open access: yesHigh Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang   +5 more
wiley   +1 more source

Study on overvoltage of hybrid LCC-VSC-HVDC transmission

open access: yesThe Journal of Engineering, 2018
Hybrid line commutation converter-voltage-source converter high-voltage direct current transmission (LCC-VSC-HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present.
Dizhen Xu   +4 more
doaj   +1 more source

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

open access: yesHigh Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li   +9 more
wiley   +1 more source

Study of Switching Overvoltage Protection Measures for Capacitor Compensation Device

open access: yesKongzhi Yu Xinxi Jishu, 2014
The harm of using damping and limiting measures to eliminate switching overvoltage of FC device was analyzed in theory and simulation. It presents that input overvoltage protection mainly depends on the insulation capability of the device and the effect ...
JIANG Jiajiu   +4 more
doaj  

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
Transient stability of doubly-fed induction generators (DFIGs) is a major concern in both AC and DC grids, and DFIGs must stay connected for a time during grid faults according to the power grid requirements.
Shaomin YAN   +4 more
doaj   +1 more source

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