Results 1 to 10 of about 11,911 (300)

Identifcation and Location of Partial Discharge Defects in Medium Voltage AC Cables [PDF]

, 2019
The presence of partial discharge (PD) in electrical equipment is the confirmation or indication of an ongoing degradation of its dielectric insulation. PD study is a widely used tool for condition monitoring of medium voltage (MV) cables.
Robles, Guillermo, Hussain, Amjad, Shafiq, Muhammad, Kauhaniemi, Kimmo, Lehtonen, Matti   +4 more
core   +1 more source

Influence of Deformed Corrugated Aluminum Sheath on the Electric Field of Extruded Insulation DC Cable

Zhongguo dianli, 2020
In order to determine the possible damage to the cable insulation structure by deformed corrugated aluminum sheath of HVDC cable and its influence on the electrical performance during operation, thermal expansion test and radial pressure test were ...
Hongliang ZHANG, Yi YIN, Jinyu XIAO, Jinming HOU, Zhiyu YAN, Shuhong XIE, Ming HU   +6 more
doaj   +1 more source

Point defects in tight binding models for insulators [PDF]

Mathematical Models and Methods in Applied Sciences, 2020
We consider atomistic geometry relaxation in the context of linear tight binding models for point defects. A limiting model as Fermi-temperature is sent to zero is formulated, and an exponential rate of convergence for the nuclei configuration is established.
Ortner, Christoph, Thomas, Jack
openaire   +2 more sources

A STATISTICAL MODEL OF MONITORING OF INSULATION BREAKDOWN VOLTAGE STABILITY IN THE PROCESS OF ENAMELED WIRES PRODUCTION

Electrical engineering & Electromechanics, 2019
This paper is devoted to non- destructive technological monitoring of defects of insulation of enameled wires with poliimid polymer. The authors present a statistical method for processing, comparison and analysis of outcomes of measurements of ...
A. G. Gurin, O. V. Golik, V. V. Zolotaryov, S. Yu. Antonets, L. A. Shchebeniuk, O. M. Grechko   +5 more
doaj   +1 more source

Understanding of Incipient discharges in Transformer Insulation by reconstruction of Digital Twins for the discharges using Generative Adversarial Networks

, 2021
Partial discharge (PD) monitoring is one of the diagnostic technique adopted for identifying the variety of defects in transformer insulation. Ultra high frequency (UHF) technique is gaining importance in PD monitoring applications of transformer due to ...
Mahidhar, G. D. P.,, R. Sarathi, Taylor, Nathaniel,, Edin, Hans Ezz,, G. D. P. Mahidhar, Desai, B. M. Ashwin,, Kumar, B. Aneesh,, B. Aneesh Kumar, H. Edin, B. M. Ashwin Desai, N. Taylor, Sarathi, R.,   +11 more
core   +1 more source

Terahertz-Based Insulation Delamination Defect Inspection of Vehicle Cable Terminals

, 2023
Cable terminals of the high-speed Electric Multiple Units (EMUs) are prone to undertake insulation delamination defects due to their special operating conditions.
Dong, Haiying, Cao, Binglei, Li, Shuaibing, Kang, Yongqiang, Li, Hongwei, Gao, Sheng, Cui, Yi   +6 more
core   +1 more source

Trapping parameters comparison between cable sections from different service conditions by a new trapping-detrapping model [PDF]

, 2014
Space charge formation will cause electric field enhancement at certain location in the polymeric materials, especially under HVDC insulation condition.
Xu, Yang, Liu, Ning, Yang Xu, Ning Liu, George Chen, Chen, George   +5 more
core   +1 more source

A Intelligent Method for Insulation Defect Detection of Switchgear Based on Multi-source Sensing

Zhongguo dianli, 2021
Insulation fault accounts for a large proportion in electrical equipment faults, so it is an important strategy to detect and eliminate the faults in their latent phase. Insulation defects are usually accompanied by temperature rise or partial discharge,
Pei CAO, Peng XU, Jianming HE, Kai GAO, Haoyang TIAN, Yiping JI   +5 more
doaj   +1 more source

Porous materials for thermal management under extreme conditions [PDF]

, 2006
A brief analysis is presented of how heat transfer takes place in porous materials of various types. The emphasis is on materials able to withstand extremes of temperature, gas pressure, irradiation, etc., i.e.
T.W Clyne, Clyne, T.W., Markaki, AE, Golosnoy, I.O., Tan, J.C., Clyne, TW, J.C Tan, ,, Markaki, A.E., A.E Markaki, Tan, Jin Chong, Golosnoy, IO, I.O Golosnoy, Tan, JC   +13 more
core   +1 more source

Hydrogen‐Related Defects in Insulators

physica status solidi (a), 2021
It is shown that the introduction of hydrogen by a dc H plasma treatment leads to the appearance of negatively charged defects in amorphous Al2O3 and SiO2 and positively charged defects in amorphous HfO2. The concentration of the defects increases with increasing temperature of the dc H plasma treatment between 50 and 100 °C, and the defects appear in ...
openaire   +1 more source