Results 31 to 40 of about 158,195 (164)

Denoising Analysis of Partial Discharge Acoustic Signal Based on SVMD-PCA

Journal of Applied Science and Engineering, 2023
Partial discharge (PD) acoustic signal detection is one of the effective means to assess the insulation status of power transformers. In actual monitoring, white noise is likely to cause strong interference to the partial discharge acoustic signal of the
Panpan Cao, Jianqiao Ma, Guangze Yang, Sheng Li   +3 more
doaj   +1 more source

Partial Discharge Inception and Breakdown Voltage Analysis in PCB-Based Electrode Structures

Applied Sciences
This paper investigates partial discharge (PD) characteristics and breakdown behavior in five electrode configurations fabricated from fiberglass circuit boards, including parallel electrode (PE), triangular electrode (TE), right-angled electrode (RE ...
Tzu-Ching Tai, Shiao-Yu Andrew Bao, Bharath Kumar Boyanapalli, Cheng-Chien Kuo, Chien-Kuo Chang   +4 more
doaj   +1 more source

Blind equalization of partial discharge channels [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla"
In the case of partial discharge signals, obtained during "online" monitoring or "off-line" tests of the generator, there is often interference between the direct and reflected signals or disturbances during propagation through the medium, i.e.
Žigić Aleksandar, Kartalović Nenad, Radoman Uroš, Kovačević Uroš   +3 more
doaj   +1 more source

Classification of partial discharges

IEEE Transactions on Electrical Insulation, 1993
For a long time, classification of partial discharges was performed by eye, by studying discharge patterns at the ellipse of an oscilloscope screen. The introduction of digital processing techniques allowed automation of the recognition procedure. These procedures are reported and applied to a number of actual HV constructions which suffer from partial
Kreuger, F.H. (author), Gulski, E. (author), Krivda, A. (author)   +2 more
openaire   +3 more sources

Device for online monitoring of insulation faults in high-voltage switchgears

International Journal of Distributed Sensor Networks, 2021
Partial discharges are the major cause of deterioration in the insulation characteristics of switchgears. Therefore, timely detection of partial discharge in switchgear and potential insulation faults is an urgent problem that needs to be addressed in ...
Jiajia Song, Jinbo Zhang, Xinnan Fan
doaj   +1 more source

Mine cable partial discharge denoising method based on multivariate variational mode decomposition and improved wavelet threshold

Meitan xuebao
The insulation state of the mine cable plays an important role in the stable operation of the mine power supply system. Partial discharge on-line monitoring is an important means of cable insulation state monitoring.
Jiyuan CAO, Yanwen WANG, Peng CHEN, Xuan ZHOU, Weixiong ZHU, Yihe ZHANG, Le WANG   +6 more
doaj   +1 more source

Pattern Classification of Partial Discharge Data [PDF]

International Journal of Fuzzy Logic and Intelligent Systems, 2005
PD(Partial discharges) are small electrical sparks that occur within the electric insulation of cables, transformers and windings on motors. PD analysis is a proactive diagnostic approach that uses PD measurements to evaluate the integrity of this equipment.
Sung-Ho Kim 0005, Geum-Dong Bae
openaire   +1 more source

Partial discharges in aeronautics: the last frontier? [PDF]

2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM), 2015
This paper presents the recent advances made in the field of Partial Discharges detection and analysis in the field of aeronautics. More particularly, it intends to present the influence of the voltage waveform on the type of detection method, the role of the assembly process on the PD Inception Voltage and finally an on line PD detection under PWM ...
Lebey, Thierry, Cella, Benjamin, Billard, Thibaut, Abadie, Cédric   +3 more
openaire   +3 more sources

Partial discharge characteristics of IGBT module in mine frequency converter under step pulse

矿业科学学报, 2020
The partial discharge occurs in IGBT device module of mine equipment.which leads to the breakdown of insulation and burns the device.In this paper the causes and characteristics of pd in IGBT module were studied.Therefore, based on the research of ...
Wang Yanwen, Feng Chen, Chen Peng, Gao Zhixuan, Sun Yanying, Wang Le   +5 more
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