Results 21 to 30 of about 127,048 (210)

Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable [PDF]

, 2009
A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables.
Choo, Wilson, Swingler, Steve, Chen, George   +2 more
core   +2 more sources

Effect of Nano-MgO Doping in XLPE on Charge Transport and Electric Field Distribution in Composite Insulation of HVDC Cable Joint

Energies, 2022
The space charge characteristics of cross-linked polyethylene (XLPE) can be improved to some extent by doping the appropriate amount of nano-MgO.
Yani Wang, Shuai Zhang, Yuanyuan Sun, Xingwu Yang, Chun Liu   +4 more
doaj   +1 more source

Experimental investigation of E-beam effect on the electric field distribution in cross-linked polyethylene/ZnO nanocomposites for medium-voltage cables simulated by COMSOL Multiphysics

Journal of Analytical Science and Technology, 2022
This study investigated the electric field distribution of underground cable insulation in cross-linked polyethylene/zinc oxide (XLPE/ ZnO) nanoparticles (NPs) for medium-voltage (MV) cables. The ZnO NPs that were obtained by three methods of preparation
A. I. Sharshir, S. A. Fayek, Amal. F. Abd El-Gawad, M. A. Farahat, M. I. Ismail, Mohamed Mohamady Ghobashy   +5 more
doaj   +1 more source

Identification of XLPE cable insulation defects based on deep learning

Global Energy Interconnection, 2023
The insulation aging of cross-linked polyethylene (XLPE) cables is the main reason for the reduction in cable life. There is currently a lack of rapid and effective methods for detecting cable insulation defects in power-related sectors.
Tao Zhou, Xiaozhong Zhu, Haifei Yang, Xuyang Yan, Xuejun Jin, Qingzhu Wan   +5 more
doaj   +1 more source

Space charge characteristics of multi-layer oil-paper insulation under different DC voltages [PDF]

, 2009
In this paper, space charge in oil-paper insulation system has been investigated using the pulsed electroacoustic (PEA) technique. A series of measurements were carried out when the insulation system was subjected to different applied voltages.
M Fu, Fu, Mingli, Liao, Ruijing, Chao Tang, Ruijin Liao, G Chen, Tang, Chao, Chen, George   +7 more
core   +2 more sources

Additive Interaction Effect on High‐Temperature Stability of XLPE Insulation for High‐Voltage Cables

High Voltage
The high‐voltage cable is one of the key equipment for power transmission, and its reliable operation depends on the crosslinked polyethylene (XLPE) insulation.
Hongjian Liu, Shihang Wang, Yifan Wu, Shiming Xu, Xiyao Li, Ni Wang, Chuang Zhang, Shengtao Li   +7 more
doaj   +1 more source

Comparison of Production Processes and Performance Between Polypropylene-Insulated and Crosslinked-Polyethylene-Insulated Low-Voltage Cables

Energies
Traditional crosslinked-polyethylene (XLPE) insulation suffers from high recycling costs and low efficiency due to its thermosetting properties. In contrast, thermoplastic polypropylene (PP), with advantages of melt recyclability, low energy consumption,
Yunping He, Zeguo Pan, He Song, Junwang Ding, Kai Wang, Jiaming Yang, Xindong Zhao   +6 more
doaj   +1 more source

Simulation and partial discharge detection for typical defects of 10 kV cable the joint

The Journal of Engineering, 2019
In order to explore the partial discharge characteristics of 10 kV XLPE insulated cable (hereinafter referred to as ‘XLPE cable’), first six typical defects are made on the main insulation according to the requirements of the installation process and the
Yunfeng Xia, Xinming Song, Jianzong He, Zhidong Jia, Xilin Wang   +4 more
doaj   +1 more source

Evaluation of Non-Uniform Thermal Aging of XLPE Cable Based on Modified Debye Model

Frontiers in Materials, 2022
The polarization/depolarization curve (PDC), which contains abundant insulation information, is widely used to evaluate the insulation condition of the cross-linked polyethylene (XLPE) cables. However, the insulation condition assessing the result of the
Yiyi Zhang, Guangfeng Gu, Jiefeng Liu, Fengyu Jiang, Yufan Fan, Junwei Zha, Junwei Zha   +6 more
doaj   +1 more source

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