Results 41 to 50 of about 161,473 (191)

Evaluation of a calibration technique in measuring partial discharges inside mineral oils with a high‐frequency current transformer (HFCT) sensor: A case study

IET Generation, Transmission & Distribution, 2023
Partial discharge is one of the main reasons for insulation degradation in high‐voltage apparatuses. Partial discharge is an ineluctable phenomenon that happens when a high electrical field is adjacent to an insulator. High‐frequency current transformers
Hamidreza Besharatifard, Saeed Hasanzadeh, S M Muyeen, Innocent Kamwa   +3 more
doaj   +1 more source

Noise Separation and Defect Recognition in AC Partial Discharge Pattern Signals Using Continuous Wavelet Transform

IEEE Access
Separating noise and partial discharge signals is essential for partial discharge analysis. However, the presence of conductive and radiative noise, such as switching pulses, electromagnetic interference, and network communication, makes this difficult ...
Tae-Yun Hong, Young-Woo Youn, Jong-Ho Sun, Jin-Gyu Kim   +3 more
doaj   +1 more source

Application of detection method of ultrasound and high-frequency current in partial discharge detection of 35 kV switchgear

Gong-kuang zidonghua, 2014
The paper introduced basic principle, detection and determinants of partial discharge detection method based on a combination method of ultrasound and high-frequency current.
LUO Dongsong, LU Ye
doaj   +1 more source

Partial Discharge Fault Detection of Substation GIS Based on CEEMDAN Fusion Processing Algorithm of Multi‐Frequency Signals

Engineering Reports
Partial discharge is a common fault mode of GIS equipment, and timely and accurate detection of its status is of great significance for ensuring the safe operation of the power system.
Yuan Sun, Hao Xie, Li Chang
doaj   +1 more source

Guest editorial: Partial discharge at DC voltage [PDF]

, 2021
Cheng Pan, Yang Cao, Chuanyang Li
openalex   +1 more source

Stator Insulation Partial Discharge Test and Reliability Evaluation of Traction Motor

机车电传动, 2021
Aiming at the local defects of traction motor stator insulation, based on the partial discharge pulse current method, a scheme for evaluating the reliability of traction motor stator insulation was proposed. First, discharge models were established based
Yuenan LIU, Min GENG, Junfeng GUI, Ruizhen CUI, Xilian WANG   +4 more
doaj  

Flexible Pb(Zr0.52,Ti0.48)O3 thin film acoustic emission sensor for monitoring partial discharge in power cable

, 2023
Ming Wu, Yu Yan, Yanan Xiao, Yongbin Liu, Huaqiang Li, Lisheng Zhong, Xiaojie Lou, Jinghui Gao   +7 more
openalex   +1 more source

Partial discharge behavior and insulation failures detection in electrical devices subjected to impulse voltage excitation

International Journal of Electrical Power & Energy Systems
Partial discharges can occur within an insulating system due to flaws in the material and can cause continuous deterioration until a full breakdown occurs.
Manuel Eckert, Petr Mraz, Christof Ballweg, Josef Pihera   +3 more
doaj   +1 more source

A Partial Discharge Localization Method in Transformers Based on Linear Conversion and Density Peak Clustering [PDF]

, 2021
Shudong Wang, Yigang He, Baiqiang Yin, Wenbo Zeng, Ying Deng, Zengchao Hu   +5 more
openalex   +1 more source

Partial Discharge Ultrasound Detection Using the Sagnac Interferometer System

Sensors, 2018
Partial discharge detection is crucial for electrical cable safety evaluation. The ultrasonic signals frequently generated in the partial discharge process contains important characteristic information.
Yu Wang, Xiaomin Li, Yan Gao, Hongjuan Zhang, Dong Wang, Baoquan Jin   +5 more
doaj   +1 more source