Results 61 to 70 of about 17,847 (159)
Simulation of a transformer winding for partial discharge propagation studies
, 2002 A simulation model of a continuous disc type 6.6 kV transformer winding was used to study the propagation behaviour of partial discharge (PD) pulses. The model based on multi-conductor transmission line theory uses a single turn as a circuit element with
Darwin, A. +4 more
core
International Journal of Electrical Power & Energy SystemsPartial 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 +3 more
doaj +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 +4 more
doaj
Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor
, 2003 Considering the damage mechanism of oil-impregnated paper insulation in power transformers, shunt reactors and other high voltage electrical apparatus caused by partial discharge, a concept of “destructive partial discharge” is introduced in this paper ...
Fu, M, Wang, S, Chen, G
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Partial discharge distributions in liquid dielectrics
, 1992 Different dielectric fluids used in HV electrical components were subjected to AC stresses, and the partial discharge (PD) spectra produced under nonuniform and uniform field conditions were recorded with the help of an electrical detector and a ...
POMPILI, Massimo +2 more
core +1 more source
Physical Mechanisms of Partial Discharges at Nitrogen Filled Delamination in Epoxy Cast Resin Power Apparatus [PDF]
, 2013 For proper insulation design of epoxy cast resin power apparatus such as molded transformers, it is important to consider the criticality of defects that might exist into the dielectric material.
Hanai, Masahiro +4 more
core +1 more source
Journal of Electrical Systems and Information TechnologyThis article presents a research project aimed at developing a method for measuring the intensity of the electric field inducing partial discharges (PDs) in a gaseous defect within a solid insulator.
Nyetereye Frederic +2 more
doaj +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 +5 more
doaj +1 more source
Partial Discharge Location within a Transformer Winding using Principal Component Analysis
, 2011 Partial discharge (PD) may occur in a transformer winding due to ageing processes, operational over stressing or defects introduced during manufacture. The presence of PD does not necessarily indicate imminent failure of the transformer but it will lead ...
Abd Rahman, M S, Hao, L, Lewin, P L
core
Applied SciencesOil–paper insulation in oil-immersed transformers undergoes a concealed degradation process that is difficult to detect during operation. To understand its discharge behavior, this study examines partial discharge characteristics under controlled ...
Ruiming Wang +4 more
doaj +1 more source