Results 31 to 40 of about 6,560,224 (199)

Nondestructive Internal Defect Detection Using a CW–THz Imaging System in XLPE for Power Cable Insulation

Applied Sciences, 2020
The demand for internal nondestructive testing and inspection techniques is rapidly increasing. Using a continuous wave (CW) terahertz (THz) imaging system, we demonstrate that the internal defects in cross-linked polyethylene (XLPE) plates for power ...
In-Sung Lee, Joong Wook Lee
doaj   +1 more source

The Effect of Antioxidant and Graphite Nanoplatelet on DC Breakdown and Space Charge of Cross-linked Polyethylene

Journal of Harbin University of Science and Technology, 2018
To study the effect of antioxidant and graphite nanoplatelets ( GNPs) on the direct current ( DC) dielectric properties of cross-linked polyethylene ( XLPE ) ,antioxidant /XLPE and GNPs/antioxidant /XLPE composites were prepared by melt blending method ...
ZHANG Cheng-cheng, WANG Jin-hui, JING Zi-ang, YAN Zhi-yu, HAN Bao-zhong   +4 more
doaj   +1 more source

Effect of Graphene Coating on Space Charge Characteristic of XLPE and Semiconductive Layer at Different Temperatures

IEEE Access, 2019
DC cross-linked polyethylene (XLPE) power cables are being used recently for HV/EHV applications, the reliability of which is claimed to be significantly affected by space charge accumulation in the insulating material.
Zhipeng Lei, Davide Fabiani, Chuanyang Li, Simone Vincenzo Suraci, Giacomo Selleri, Tao Han, Marco Speranza, Filippo Grolli, Fabrizio Palmieri   +8 more
doaj   +1 more source

Review of Edge-based Image Segmentation on Electrical Tree Classification in Cross-linked Polyethylene (XLPE) Insulation

Journal of Physics: Conference Series, 2021
Abstract Electrical trees are the degradation events most linked with partial discharge (PD) activity in cross-linked polyethylene (XLPE) insulation of high voltage (HV) cables. To investigate tree structures and forms, study of electrical tree structures for morphological analysis often carried out using optical microscopy.
M A M Isa, M N K H Rohani, B Ismail, A S Rosmi, M Isa, W A Mustafa, M Kamarol, N S Mansor, N S M Nazar   +8 more
openaire   +1 more source

Influence of non-sinusoidal voltages on electromechanical stresses in cross-linked polyethylene insulation with micro-defects of power electrical cables

Electrical engineering & Electromechanics
Introduction. Power cables with cross-linked polyethylene (XLPE) insulation have significant advantages over traditional oil-filled ones, which have led to their widespread use in high-power electrical networks of all developed countries.
A. A. Shcherba, O. D. Podoltsev, M. A. Shcherba, T. Yu. Antonets, R. V. Belyanin   +4 more
doaj   +1 more source

Correlation Between Thermal Parameters and Morphology of Cross-Linked Polyethylene

IEEE Access, 2020
This paper reveals a correlation between morphology and thermal parameters on cross-linked polyethylene (XLPE) cable with different insulating states. Several cables were selected to detect the physicochemical and thermal parameters of the XLPE.
Yifeng Zhao, Zhuozhan Han, Yue Xie, Xinghui Fan, Yangyang Nie, Pengyu Wang, Gang Liu, Yanpeng Hao, Jiasheng Huang, Wenwei Zhu   +9 more
doaj   +1 more source

Algorithm for load cycling correction to minimise the dry zone influences on the cross‐linked polyethylene (XLPE) cable insulation [PDF]

IET Generation, Transmission & Distribution, 2020
Dry zone formation around underground power cables during load cycling may lead to thermal failure of the cable's insulation. This phenomenon has to be recorded to send an alarm to the maintenance crew when the soil around the cable reaches the critical value at which the dry zone has started to be formed.
Osama E. Gouda, Gomaa F.A. Osman
openaire   +1 more source

Research and Development of 66 kV Water Tree Retardant XLPE Light Insulated Submarine Cable

Zhongguo dianli, 2020
This paper introduces the development method of a light submarine cable with rated voltage of 66 kV and water tree retardant cross linked polyethylene insulation(XLPE).
Guo CHEN, Jian CAI, Shuhong XIE, Ming HU, Ligang LIU, Yang JING, Zhiwei LING   +6 more
doaj   +1 more source

Partial discharge measurement in solid dielectric of H.V Cross-linked polyethylene (XLPE) submarine cable

Indonesian Journal of Electrical Engineering and Computer Science, 2020
<p>A partial discharge described as anon-linear electrical break-down even that happened in a section of insulating area between two conduct which are at different potentials the damage of the insulating material, these conductors have a different insulating material potential of damage, under AC voltage discharge interval process. In this paper,
Rasha Abdul-nafaa Mohammed, Ali Nathem Hamoodi, Bashar M. Salih   +2 more
openaire   +2 more sources

Wave‐Velocity‐Based Temperature Monitoring Applied to Underground Power Cables in Medium‐Voltage Networks—Discrimination of Individual Cable Temperatures in a Distribution Grid

High Voltage, EarlyView.
ABSTRACT The thermal state of underground power cables can be monitored based on the temperature dependency of the dielectric permittivity of the insulation material. The resulting temperature‐dependent wave velocity is used as a thermometric property. To this end, the signal propagation time along a cable of an injected signal is determined.
Peter Wouters, Peter van der Wielen, Yan Li   +2 more
wiley   +1 more source