Results 11 to 20 of about 64,242 (295)

Improved information entropy weighted vague support vector machine method for transformer fault diagnosis

open access: yesHigh Voltage, 2022
A combined model based on improved information entropy and vague support vector machine (IVSVM) is introduced into transformer fault diagnosis using dissolved gas analysis in oil (DGA).
Hongru Zhang   +4 more
doaj   +1 more source

Switching Impulse Test of UHV Live Working Insulating Tool and Experimental Electrode Optimization

open access: yesZhongguo dianli, 2022
At present, the electrode arrangement still follows the low voltage level standard when the UHV live-working insulating tools are tested for operation impulse withstand voltage.
Guangkai YU   +4 more
doaj   +1 more source

UHV piezoelectric translator [PDF]

open access: yesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1986
Abstract A UHV compatible piezoelectric translator has been developed to correct for angular misalignments in the crystals of a UHV X-ray monochromator. The unit is small, bakeable to 150°C, and use only ceramic materials for insulation. We report on the construction details, vacuum compatibility, mechanical properties, and uses of the device.
Oversluizen, T., Watson, G.
openaire   +1 more source

Development of a new UHV/XHV pressure standard (cold atom vacuum standard) [PDF]

open access: yesMetrologia, 2017
The National Institute of Standards and Technology has recently begun a program to develop a primary pressure standard that is based on ultra-cold atoms, covering a pressure range of 1  ×  10−6 Pa–1  ×  10−10 Pa and possibly lower.
J. Scherschligt   +6 more
semanticscholar   +1 more source

Research on Zero Value Detection Technology of Porcelain Insulator [PDF]

open access: yesE3S Web of Conferences, 2021
High-voltage insulators are one of the devices widely used in power systems, and their pros and cons are directly related to the safe and stable operation of the power system.
Mao Xiaopo   +9 more
doaj   +1 more source

AFM of metallic nano-particles and nano-structures in heavily irradiated NaCl [PDF]

open access: yes, 2003
AFM investigations are reported for heavily, electron irradiated NaCl crystals in ultra high vacuum (UHV) in the non-contact mode with an UHV AFM/STM Omicron system.
A. Tolstikhina   +6 more
core   +3 more sources

A rapid unmanned aerial vehicle inspection path planning method based on hybrid heuristic algorithm [PDF]

open access: yesE3S Web of Conferences
The advancement of unmanned aerial vehicle (UAV) and remote sensing technologies has fueled interest in automatic UAV inspection path planning based on inspection tasks.
Li Boya   +3 more
doaj   +1 more source

Quality Management and Evaluation of UHV Transformer Based on Cloud Matter Element [PDF]

open access: yesE3S Web of Conferences, 2021
As the critical component of power control and transformation in UHV transmission link, the effective management of UHV Transformer's whole life quality cycle is an important guarantee for the safe and stable operation of power grid.
Chen Yingcui   +3 more
doaj   +1 more source

Quantitative adsorbate structure determination under catalytic reaction conditions [PDF]

open access: yes, 2013
Current methods allow quantitative local structure determination of adsorbate geometries on surfaces in ultrahigh vacuum (UHV) but are incompatible with the higher pressures required for a steady-state catalytic reactions. Here we show that photoelectron
Blume, R.   +9 more
core   +1 more source

Simulation analysis and calculation of electric field distribution characteristics of UHV wall bushing

open access: yesEnergy Reports, 2021
Facing the unbalanced development of resource distribution and productivity, China needs long-distance power transmission and distribution. The long-distance power transmission will lead to a lot of power loss in the process of transmission.
Yunfei Shi   +6 more
doaj   +1 more source

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