Results 51 to 60 of about 17,847 (159)

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

Modeling of the Partial Discharge Process in a Liquid Dielectric: Effect of Applied Voltage, Gap Distance, and Electrode Type

, 2013
The partial discharge (PD) process in liquid dielectrics is influenced by several factors. Although the PD current contains the information representing the discharge process during the PD event, it is difficult to determine the detailed dynamics of what
Qing Yang, Tao Yuan, Yang, Q, Chilong Jiang, Sima, W, Jiang, C, Yuan, T, Lewin, P L, Paul Lewin, Wenxia Sima   +9 more
core   +1 more source

Domain-Adaptive Transformer Partial Discharge Recognition Method Combining AlexNet-KAN with DANN

Sensors
The changes in operating conditions of a power transformer can cause a shift in the distribution of partial discharge data, leading to the gradual generation of unlabeled new data, which results in the degradation of the original partial discharge ...
Jianfeng Niu, Yongli Zhu
doaj   +1 more source

Remote controlled partial discharge acquisition unit

, 2003
Online partial discharge (PD) analysis for underground high voltage cables has major advantages over the offline techniques. Online techniques usually involve PD data acquisition, storage and post-processing of the data.
Pearson, J.S., Siew, W.H., Foo, M.H., Soraghan, J.J.   +3 more
core  

Partial discharge testing of defective three-phase PILC cable under rated conditions

, 2011
The ability to accurately monitor the health of power distribution plant is a very attractive prospect for utility companies. This capability would provide a system that engineers could use to assess the real-time state of the network.
Hunter, J.A., Walton, C., Lewin, P.L., Michel, M., Hao, L., Swaffield, D.J.   +5 more
core  

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

Use of Machine Learning for Partial Discharge Discrimination

, 2009
Partial discharge (PD) measurements are an important tool for assessing the condition of power equipment. Different sources of PD have different effects on the insulation performance of power apparatus.
Hao, L, Swingler, S G, Lewin, P L
core  

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

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

Continuous online monitoring of partial discharges in high voltage cables

, 2004
This paper reviews data acquisition, transmission and processing methodologies for continuous online monitoring of partial discharges in power cable systems.
Tian, Y., Sutton, S.J., Lewin, P.L., Swingler, S.G., Wilkinson, J.S.   +4 more
core   +1 more source