Results 71 to 80 of about 669,503 (300)

Protection challenges in future converter dominated power systems [PDF]

open access: yes, 2015
Converter interfaces, used to connect renewable energy sources, HVDC links and infeeds to the power system, will bring significant changes to the behaviour of power systems in the future, particularly in Great Britain (GB).
Booth, Campbell   +5 more
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

Experimental study on enhancing the foam spray range of compressed air foam nozzle

open access: yesJournal of Safety Science and Resilience
As the core equipment in power systems, ultra-high voltage (UHV) transformers pose a high fire risk. The compressed-air foam spray nozzle is a novel end-release device that, due to its high efficiency and excellent suppression effect on oil-based fires ...
Fengju Shang   +6 more
doaj   +1 more source

Asset Management of Power Transformer Protective Devices in Transmission System

open access: yesThe Proceedings of the 4th International Conference on Industrial Application Engineering 2016, 2016
Las empresas eléctricas enfrentan altos riesgos en los costos de adquisición y mantenimiento de sus activos e intentan lograr la máxima utilización de sus activos existentes durante el ciclo de vida. La gestión de activos, especialmente el mantenimiento centrado en la fiabilidad, se utiliza para reducir el riesgo de mantenimiento.
Rattanakorn Phadungthin, Juthathip Haema
openaire   +2 more sources

On the Throughput and Energy Efficiency of Cognitive MIMO Transmissions

open access: yes, 2013
In this paper, throughput and energy efficiency of cognitive multiple-input multiple-output (MIMO) systems operating under quality-of-service (QoS) constraints, interference limitations, and imperfect channel sensing, are studied.
Akin, Sami, Gursoy, Mustafa Cenk
core   +1 more source

An Adaptive Overcurrent Coordination Scheme to Improve Relay Sensitivity and Overcome Drawbacks due to Distributed Generation in Smart Grids [PDF]

open access: yes, 2017
Distributed Generation (DG) brought new challenges for protection engineers since standard relay settings of traditional system may no longer function properly under increasing presence of DG.
Conde, Arturo   +3 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Проектирование релейной защиты линии электропередач 220 кВ ПС «Краснополянская » – Беловская ГРЭС Кузбасской ЭЭС [PDF]

open access: yes, 2016
-Объектом исследования являются релейная защита и автоматика линии 220 кВ. Цель работы – Проектирование релейной защиты линии электропередач 220 кВ ПС «Краснополянская » – Беловская ГРЭС Кузбасской ЭЭС В процессе исследования проводились ...
Нусратиллаев, Илхомжон Алишер угли
core  

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov   +4 more
wiley   +1 more source

Structure optimal design of 500 kV dry-type air-core shunt reactor based on response surface method

open access: yesAIP Advances
The hotspot temperature of the reactor is one of the important indices in reactor design, and the appropriate hotspot value can ensure that the reactor will not overheat failure and threaten the safety of the power system.
Yanjing Zhu   +6 more
doaj   +1 more source

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