Results 41 to 50 of about 3,163 (202)

Validation of geomagnetically induced current modelling code [PDF]

, 2017
A paper by Horton et al. (2012) details a test grid containing 8 substations with 15 transformers connected by 15 lines. The paper gives detailed information about location, resistances and connections including features such as capacitors, delta and ...
Beggan, C.D., Richardson, G.S.
core  

Surface and intradermal temperature responses of adults to ambient heat stress with and without cooling

Physiological Reports, Volume 13, Issue 21, November 2025.
Abstract Accurate measurement of skin temperature is crucial to understanding responses to heat. We tested the hypothesis that intradermal temperature would differ from skin surface temperature during ambient heating with and without fan and water spray (24°C).
Zachary J. McKenna, Elizabeth A. Gideon, Erin M. Harper, Taysom E. Wallace, Isa A. Farooqi, Craig G. Crandall   +5 more
wiley   +1 more source

Universal mathematical model of power three-phase transformers and autotransformers [PDF]

, 2007
The substantiation of necessity in essential increase of completeness and reliability of modeling processes in energy systems has been shown. The results of synthesis of universal mathematical model of one of the main elements of energy systems - power ...
Gusev, A. S., Plodistiy, I. L., Svechkarev, S. V.   +2 more
core  

Use of the PLIF and LIP methods for definition of non-stationary temperature fields of water droplets [PDF]

, 2017
This study illustrates the results of experiments to determine the unsteady and non-uniform temperature fields of evaporating water droplets. It is shown that during the warming up of the droplet inside it an inhomogeneous temperature field is formed. In
Osmolovskaya, Maria, Solomatin, Yaroslav, Volkov, Roman Sergeevich   +2 more
core   +1 more source

Use of Alternating Current Spinning to Prepare Carbon Nanofibers From Commercial PAN Fibers

Journal of Applied Polymer Science, Volume 142, Issue 31, August 15, 2025.
ABSTRACT The aim of this study was to explore the potential of recycling commercial polyacrylonitrile fibers through electrospinning to produce carbon nanofibers (CNFs). We evaluated the feasibility of producing bulk nanofiber layers from recycled polymer and optimized the process to achieve an optimal solution concentration (10 wt%).
Radek Jirkovec, Michal Holada, Pavel Holec, Jiri Chvojka   +3 more
wiley   +1 more source

Study of Special Unbalanced Load Modes of New Double-Autotransformer of the Flexible Alternating Current Link [PDF]

Problems of the Regional Energetics
The purpose of the work is study of special asymmetric modes of new three-phase autotrans-former device for flexible connection of alternative current power systems.
Bosneaga V., Suslov V.
doaj   +1 more source

Improving the modeling of geomagnetically induced currents in Spain [PDF]

, 2018
Vulnerability assessments of the risk posed by geomagnetically induced currents (GICs) to power transmission grids benefit from accurate knowledge of the geomagnetic field variations at each node of the grid, the Earth's geoelectrical structures beneath ...
Campanyà, Joan, Ledo Fernández, Juanjo, Marcuello Pascual, Alejandro, Marsal, S., Queralt i Capdevila, Pilar, Torta, J.M.   +5 more
core   +1 more source

Geomagnetically Induced Currents, Transformer Harmonics, and Reactive Power Impacts of the Gannon Storm in May 2024

Space Weather, Volume 23, Issue 4, April 2025.
Abstract Geomagnetically induced current (GIC) measurements made at two 3 phase, 3 limb transformers, operating in the Halfway Bush substation in Dunedin, New Zealand have been analyzed during the May 2024 Gannon Storm. GIC measurements were combined with very low frequency radio wave AC harmonic measurements made nearby, and reactive power ...
M. A. Clilverd, C. J. Rodger, D. H. Mac Manus, J. B. Brundell, M. Dalzell, A. Renton, V. Lo, A. Lapthorn, A. W. Smith, J. Malone‐Leigh, X. Feng, T. Petersen   +11 more
wiley   +1 more source

Technical and vocational skills (TVS): a means of preventing violence among youth in Nigeria [PDF]

, 2017
Technical and vocational skills are an important tool for reducing violence among youth, especially in Nigeria, who face security challenges due to different kinds of violence.
Ibrahim, Mohammed, Wan Mohamed, Wan Azlinda   +1 more
core  

A Modular Multi‐Port Hybrid Solid‐State Transformer for Large‐Scale Renewable Power Applications

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
This article proposes a four‐port solid‐state transformer (FPSST) to enhance large‐scale energy generation from renewable sources. The FPSST incorporates a modular multilevel converter to collect both medium‐voltage ac and medium voltage dc from wind and solar systems.
Md. Sanwar Hossain, Md. Rabiul Islam, Danny Sutanto, Kashem M. Muttaqi   +3 more
wiley   +1 more source