Results 11 to 20 of about 438,791 (295)

Method for the diagnosis of high-voltage dielectric elements during operation based on dynamic registration of electromagnetic radiation [PDF]

open access: yesE3S Web of Conferences, 2020
Complex remote monitoring and the developed non-contact diagnostic device (NDD) allow monitoring the technical condition and revealing the residual life of high-voltage dielectric elements.
Ivanov Dmitry   +4 more
doaj   +1 more source

Research on a Non-Contact Multi-Electrode Voltage Sensor and Signal Processing Algorithm

open access: yesSensors, 2022
Traditional contact voltage measurement requires a direct electrical connection to the system, which is not easy to install and maintain. The voltage measurement based on the electric field coupling plate capacitance structure does not need to be in ...
Wenbin Zhang   +5 more
doaj   +1 more source

Laboratory stand for development of method and system for continuous non-contact non-destructive testing of technical condition of insulation equipment [PDF]

open access: yesОмский научный вестник, 2021
Measurement of partial discharges (PD) is a generally accepted method of diagnosing the insulation of electrical equipment worldwide. Today, the trend is to move from conventional offline testing to online monitoring to predict the service life of ...
T. G. Galieva   +3 more
doaj   +1 more source

Design and Testing of a Non-Contact MEMS Voltage Sensor Based on Single-Crystal Silicon Piezoresistive Effect

open access: yesMicromachines, 2022
The paper presents a novel non-contact microelectromechanical systems (MEMS) voltage sensor based on the piezoresistive effect of single-crystal silicon.
Jiachen Li   +5 more
doaj   +1 more source

Equipotential shielding voltage sensor for contact measurement of transient voltage in EHV/UHV power grids

open access: yesHigh Voltage, 2021
In this study, an equipotential shielding voltage sensor is proposed to achieve contact measurement of transient voltage in extra‐high voltage (EHV)/ultra‐high voltage (UHV) power grids.
Jianchao Zheng   +4 more
doaj   +1 more source

Non-Contact Measurement and Analysis of Trapped Charge Decay Rates for Cable Line Switching Transients

open access: yesEnergies, 2020
During reclosure of 275 kV cable circuits used for voltage control, excessive overvoltages were observed on the network. Such events cause onerous and costly failures.
Stephen Robson   +3 more
doaj   +1 more source

Qubit measurement using a quantum point contact with a quantum Langevin equation approach [PDF]

open access: yes, 2006
We employ a quantum Langevin equation approach to establish non-Markovian dynamical equations, on a fully microscopic basis, to investigate the measurement of the state of a coupled quantum dot qubit by a nearby quantum point contact.
Bing Dong   +3 more
core   +1 more source

Research on the Algorithm and Test of Transmission Line Voltage Measurement Based on Electric Field Integral Method

open access: yesIEEE Access, 2018
The non-contact voltage measurement of the transmission line is of importance to the operation and intellectualization of the electrical power system. Presently, the non-contact measurement of the transmission line voltage based on the field sensor has ...
Jingang Wang, Lu Gao
doaj   +1 more source

Fabrication and characterization of Ag-BaF2/GaSb Schottky diode

open access: yesTikrit Journal of Pure Science, 2023
The Ag-BaF2/GaSb Schottky diode measurement has been investigated by using voltage versus current (I-V) at different temperatures, voltage versus capacitance (C-V) and hotoelectric measurements on n-type GaSb carrier per cm-3, Current – voltage ...
Abdulsamee Fawzi Abdulaziz
doaj   +1 more source

Design, Experiments and Simulation of Voltage Transformers on the Basis of a Differential Input D-dot Sensor

open access: yesSensors, 2014
Currently available traditional electromagnetic voltage sensors fail to meet the measurement requirements of the smart grid, because of low accuracy in the static and dynamic ranges and the occurrence of ferromagnetic resonance attributed to overvoltage ...
Jingang Wang, Can Gao, Jie Yang
doaj   +1 more source

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