Results 41 to 50 of about 4,035 (194)

Research of the power plant operational states with block structure [PDF]

open access: yes, 2005
In this article the research technique block structure power plant operational states is offered. As an example the operating power plant of OOO Siberian Generation Company with block structure of turbogenerators connection is considered.
Eggermann, Katja   +8 more
core   +1 more source

Evaluating the Energy Conservation Effects of Implementing Automatic Voltage Regulator: A Case Study of Department Stores

open access: yesEnergies
Commercial buildings and shopping malls face rising electricity costs and increasing pressure to adopt sustainable practices. This paper presents the first long-term, multi-site empirical validation of Automatic Voltage Regulator (AVR) deployment in Thai
Montree Utakrue   +3 more
doaj   +1 more source

The Influence of 3‐D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC Risk

open access: yesSpace Weather, Volume 23, Issue 11, November 2025.
Abstract Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms. GICs in the electric power grid can cause damage to electric power transformers, system failures, and wide‐scale blackouts.
Hannah G. Parry   +4 more
wiley   +1 more source

Calculation of Transformer and Autotransformer Resources in Automatic Control Systems of Technological Processes at Substations

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2009
The paper proposes algorithms for calculation of transformer and autotransformer resources and control of thermal condition of windings using hardware and software of automatic control systems of technological processes at substations.The given software ...
V. V. Bourliuk, S. N. Zherko
doaj   +1 more source

A Three-phase Power-factor Correction Scheme Using an Autotransformer and Two Single-phase Buck Rectifiers

open access: yesEletrônica de Potência, 2015
This paper presents a three-phase unidirectional rectifier with power-factor correction (PFC) using two modified single-phase Buck rectifiers in continuous conduction mode (CCM).
Geovane Duarte Pinheiro   +3 more
doaj   +1 more source

Driving lamps by induction [PDF]

open access: yes, 1973
An electrodeless lamp circuit with a coil surrounding a krypton lamp is driven by an RF input source. A coil surrounding a mercury lamp is tapped across the connection of the input central to the krypton-lamp coil. Each coil is connected in parallel with
Clough, L. G., Laue, H. H.
core   +1 more source

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

open access: yesJournal 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   +3 more
wiley   +1 more source

A Unidirectional DC-DC Autotransformer for DC Grid Application

open access: yesEnergies, 2018
Conventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss.
Meng Zhou   +4 more
doaj   +1 more source

Implementation Strategy of Test Facility Based on Auto-Transformer for LVRT/HVRT Evaluation of Large-Scale Wind Turbine

open access: yesEnergies, 2023
In accordance with South Korea’s recent 2030 Carbon Neutral Plan, an 8GW offshore wind farm is planned for construction in the South-west Sea. Therefore, it is expected that large-scale wind turbines will be installed, and these turbines must operate ...
Byungki Kim   +3 more
doaj   +1 more source

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

open access: yesSpace 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   +11 more
wiley   +1 more source

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