Results 1 to 10 of about 10,771 (260)

Optimum feature selection for classification of PD signals produced by multiple insulation defects in electric motors [PDF]

Scientific Reports
Partial discharges (PD) are initiated in electrical equipment during various points of the equipment’s lifecycle. The intensity of PD defects rises continuously with time, which can lead to insulation degradation and reduced operational life of the ...
Waqar Hassan, G. Amjad Hussain, Abdul Wahid, Madia Safdar, Haris M. Khalid, Mohamad Kamarol Mohd Jamil   +5 more
doaj   +3 more sources

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   +3 more sources

Deep Learning-Based Intelligent Detection Device for Insulation Pull Rod Defects

Energies
This paper proposes a deep learning-based intelligent detection device for insulation pull rod defects, addressing the issues of low detection accuracy, poor timeliness of intelligent analysis, and the difficulty in preserving detection results. Firstly,
Hua Yu, Shu Niu, Shuai Li, Gang Yang, Xuan Wang, Hanhua Luo, Xianhao Fan, Chuanyang Li   +7 more
doaj   +3 more sources

Research on Online Monitoring of Partial Discharge of Insulation Defects in Air Switchgear Based on Characteristic Gases

Applied Sciences
Air switchgear is an important power equipment in the transmission, transformation, and distribution process of the power system. Insulation defects can lead to partial discharge, which is one of the primary causes of air switchgear failure.
Yi Tian, Haotian Niu, Shuai Wang, Guixin Zhu   +3 more
doaj   +3 more sources

A curvature-adaptive flexible capacitive sensing system for early detection of corrosion under insulation in long-distance thermal pipelines [PDF]

Scientific Reports
Corrosion under insulation (CUI) poses a significant threat to the integrity and safety of long-distance thermal pipelines. However, conventional non-destructive testing (NDT) methods struggle to achieve early-stage detection of CUI while effectively ...
Tao Zeng, Songzhe Chai, Jinxin Xu, Suan Xu   +3 more
doaj   +2 more sources

A Novel Method for Pattern Recognition of GIS Partial Discharge via Multi-Information Ensemble Learning

Entropy, 2022
Partial discharge (PD) is the main feature that effectively reflects the internal insulation defects of gas-insulated switchgear (GIS). It is of great significance to diagnose the types of insulation faults by recognizing PD to ensure the normal ...
Qianzhen Jing, Jing Yan, Lei Lu, Yifan Xu, Fan Yang   +4 more
doaj   +1 more source

Detection Sensitivity of Input Impedance to Local Defects in Long Cables

IEEE Access, 2020
Broadband impedance spectroscopy (BIS) has become a new method for detecting cable insulation defects, but the sensitivity of this method to local defects in cables has not been fully studied.
Wenxia Pan, Xinrui Li, Zhengding Zhu, Kun Zhao, Chen Xie, Qi Su   +5 more
doaj   +1 more source

Modelling of Electrical Discharge Processes for Optimization of Corona-Protection System of High Voltage Rotating Machines Insulation [PDF]

Problems of the Regional Energetics, 2020
The aim of this work is to study the influence of technological defects in stator windings electri-cal insulation system on the inception of partial discharges in the stator slot of air-cooled electric rotating machines.
Andreev A.M., Andreev I.A., Belko V.O., Reznik A.S., Smirnov A.N., Stepanov A.A.   +5 more
doaj   +1 more source

A Classification System for Insulation Defect Identification of Gas-Insulated Switchgear (GIS), Based on Voiceprint Recognition Technology

Applied Sciences, 2020
Insulation defects that occur in gas-insulated switchgear (GIS), which is one of the most important types of equipment in the power grid, can lead to serious accidents.
Weijia Yao, Yongpeng Xu, Yong Qian, Gehao Sheng, Xiuchen Jiang   +4 more
doaj   +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