Results 71 to 80 of about 14,210 (261)

Evaluation Methodology, Numerical Verification and Retrofilling Procedure for Power Transformers to Ensure K‐Class Flame Retardancy and Environmentally Friendly

open access: yesHigh Voltage, EarlyView.
ABSTRACT With increasing demands for fire safety and environmental friendliness, retrofilling transformers with alternative insulating liquids has become a growing trend. However, retrofilling power transformers remains uncertain, as more residual mineral oil compromises K‐class flame retardancy, and its impact on environmental performance has yet to ...
Zhenfu Tang   +5 more
wiley   +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

Breakdown and Discharge Characteristics of High Repetition Frequency Nanosecond Pulsed Air Dielectric Barrier Discharge

open access: yesHigh Voltage, EarlyView.
ABSTRACT This study explores the breakdown characteristics and discharge modes in a parallel plate air dielectric barrier discharge system using repetitive nanosecond pulses, with pulse repetition frequencies (PRFs) from 0.1 to 100 kHz. It examines how pulse parameters—PRF, pulse number and gas pressure—affect the memory effect, leveraging current and ...
Mahreen   +3 more
wiley   +1 more source

Risk Assessment of Post-Fault Temporary Overvoltage Using Generalized Short-Circuit Ratio [PDF]

open access: gold, 2022
Huanhai Xin   +5 more
openalex   +1 more source

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

Studies on Overvoltage: XI . Some Unusual Overvoltage Phenomena

open access: yesTransactions of The Electrochemical Society, 1942
This is the first report on a series of researches in which an intensive study is to be made of factors related to overvoltage, so as to get a better insight into the mechanism of electrode potential and overvoltage. A list of questions concerning electrode potentials and overvoltage is given; also a list of possible stages in the process of ion ...
A. L. Ferguson, H. Bandes
openaire   +1 more source

Time to Breakdown for Type I Motor Winding Insulation Under High‐Frequency High‐Slew‐Rate Square Wave Voltages

open access: yesHigh Voltage, EarlyView.
ABSTRACT The emergence of (ultra)wide bandgap ((U)WBG)‐based devices has significantly enhanced performance in high‐frequency switching applications, enabling breakthroughs in electric transportation, aerospace, and renewable energy systems. However, it also presents considerable challenges to insulation systems, such as electric motor winding ...
Easir Arafat   +3 more
wiley   +1 more source

Technical SWOT analysis of decentralised production for low voltage grids in Flanders [PDF]

open access: yes, 2012
The increasing energy prices, combined with high funding by the government, has resulted in a massive integration of decentralised electrical energy production units in Belgium.
Debruyne, Colin   +3 more
core  

A novel active quenching circuit for single photon detection with Geiger mode avalanche photodiodes

open access: yes, 2008
In this paper we present a novel construction of an active quenching circuit intended for single photon detection. For purpose of evaluation, we have combined this circuit with a standard avalanche photodiode C30902S to form a single photon detector.
Brown   +16 more
core   +1 more source

MoM-SO: a Complete Method for Computing the Impedance of Cable Systems Including Skin, Proximity, and Ground Return Effects [PDF]

open access: yes, 2015
The availability of accurate and broadband models for underground and submarine cable systems is of paramount importance for the correct prediction of electromagnetic transients in power grids.
Patel, Utkarsh R., Triverio, Piero
core   +1 more source

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