Results 51 to 60 of about 641,410 (267)

Effect of Seawater Immersion on Power Frequency Over Voltage Calculation of AC Three-core Submarine Cable

open access: yesIOP Conference Series: Materials Science and Engineering, 2020
AC three-core submarine cable is an important carrier to transmit offshore wind power. Limited by the laying conditions, the reactive power compensation is generally carried out at both ends of the submarine cable line. And the armour along the submarine
Weiyuan Wang   +5 more
semanticscholar   +1 more source

Overvoltage protection network [PDF]

open access: yes, 1974
Electrical equipment to be protected from overvoltage is connected with a possible source of overvoltage via an input conductor. A fuse is connected in series with the input conductor.
Cambra, J. M.
core   +1 more source

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

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

Research on VFTO Identification of GIS Based on Wavelet Transform and Singular Value Decomposition

open access: yesEnergies, 2022
The accurate identification of Very Fast Transient Overvoltage (VFTO) is the key of overvoltage control in modern smart grids. In order to accurately identify VFTO generated by the operation of a disconnector in Gas Insulated Substation (GIS), a VFTO ...
Gang Xiao   +7 more
doaj   +1 more source

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

open access: yesHigh Voltage, EarlyView.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li   +6 more
wiley   +1 more source

A database ATP simulated waveforms of shunt reactor switching cases with vacuum breakers on motor circuits [PDF]

open access: yes, 2009
This paper presents a database ATP (Alternative Transient Program) simulated waveforms for shunt reactor switching cases with vacuum breakers in motor circuits following interruption of the starting current.
Kam, Shui-cheong, Ledwich, Gerard
core   +1 more source

Experimental High-Frequency Parameter Identification of AC Electrical Motors [PDF]

open access: yes, 2007
In order to predict conducted electromagnetic interference in inverter-motor drive systems, high-frequency (HF) motor models are requested and the involved parameters have to be available.
Boglietti, Aldo   +2 more
core   +1 more source

Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line

open access: yesThe Journal of Engineering, 2019
In order to give out inverse V-type insulator tower air-gaps configuration of double-circuit UHV AC power transmission line, different distance air-gaps from high-voltage electrode to tower frame discharge tests of inverse V-string are carried out ...
Huo Feng, Nan Jing, Ye Qiming, Ma Yeming
doaj   +1 more source

The Platform to Characterizing the Thermoelectric Materials by Photo‐Crosslinked Ionic Gel Electrolyte

open access: yesAdvanced Electronic Materials, Volume 12, Issue 2, 21 January 2026.
The device platform, which utilizes a photo‐crosslinked ionic gel electrolyte with a broad range of oxidation and reduction capabilities, can effectively evaluate and screen the thermoelectric material candidates with high potential across a wide range of doping levels, thereby minimizing the effort required to identify dopants compatible with ...
Sunbin Hwang   +2 more
wiley   +1 more source

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