Results 251 to 260 of about 75,526 (309)

Partial discharge. III. Cavity-induced PD in solid dielectrics

IEEE Electrical Insulation Magazine, 1990
For pt.II see ibid., vol.6, no.5, p.35 et seq. (1990). The question of how to relate the magnitude of the measured, effective, partial discharge (PD) to the size, shape, and position of the cavity within a solid dielectric system is addressed. The causes of cavities are examined, and a brief review of gas breakdown is given. It is then shown that for a
openaire   +1 more source

Partial discharge. IX. PD in gas-insulated substations-fundamental considerations

IEEE Electrical Insulation Magazine, 1991
For pt.VIII see ibid., vol.7, no.5, p.9 et seq. (1991). The physical aspects of partial discharge (PD) in SF/sub 6/ gas-insulated substations (GIS) are reviewed. The orientation is toward present and developing techniques for evaluating defects in solid and gaseous insulation systems on the basis of PD measurement.
R. Baumgartner, B. Fruth, W. Lanz, K. Pettersson   +3 more
openaire   +1 more source

A Novel Application of Deep Belief Networks in Learning Partial Discharge Patterns for Classifying Corona, Surface, and Internal Discharges

IEEE transactions on industrial electronics (1982. Print), 2020
This paper introduces a new application of deep belief network (DBN) as an emerging artificial neural network for recognizing and classifying different partial discharge (PD) patterns. Phase resolved PD (PRPD) technique with different window intervals is
Masoud Karimi, M. Majidi, Hamed Mirsaeedi, M. Arefi, M. Oskuoee   +4 more
semanticscholar   +1 more source

An Integrated Sensor With AE and UHF Methods for Partial Discharges Detection in Transformers Based on Oil Valve

IEEE Sensors Letters, 2019
According to the advantages and disadvantages of electromagnetic and acoustic partial discharges (PD) measurements shown in IEC TS 62478, a novel integrated sensor with acoustical emission (AE) and ultrahigh frequency (UHF) methods for PD detection in ...
W. Si, C. Fu, P. Yuan
semanticscholar   +1 more source

Calibrating the UHF technique of partial discharge detection using a PD simulator

IEEE Transactions on Dielectrics and Electrical Insulation, 1995
The paper describes a technique for simulating the presence of partial discharges in gas-insulated substation (GIS) equipment. The technique employs a pulse generator to inject current pulses through a suitable protrusion. The current pulses have similar temporal characteristics to those produced by an actual discharge event, with the added advantage ...
A.G. Sellars, S.J. MacGregor, O. Farish
openaire   +1 more source

Fundamental investigations concerning the behaviour of partial discharges (PD) in dielectric liquids

10th International Conference on Conduction and Breakdown in Dielectric Liquids, 2002
The authors report the results of fundamental investigations on the behavior of partial discharges (PDs) in insulating fluids. The shape of PD pulses is recorded with a special measuring system and the characteristics of PD pulses and their dependencies in insulating liquids are determined.
H. Borsi, U. Schroder
openaire   +1 more source

Partial Discharge Investigation on Power Cable Termination Using PD Acoustic Detection

2020 International Conference on Power, Energy and Innovations (ICPEI), 2020
This paper presents the comparison of partial discharge (PD) interpretation on three different standard test objects and defected power cable terminations among an PD acoustic sensor and conventional IEC60270 capacitive PD detection system. The experiments are conducted as off-line testing which is sourced by isolated high voltage step up transformer ...
Thanapong Suwanasri, Phanupong Fuangpian, Nattapon Panmala, Tanachai Somsak, Cattareeya Suwanasri, Shan Rungsivattagapong, Nattawut Atiwet, Papatsporn Poonpoch   +7 more
openaire   +1 more source

Partial Discharges in Motor Fed by Inverter: From Detection to Winding Configuration

IEEE transactions on industry applications, 2019
This paper reports non-intrusive partial discharge (PD) investigations on aeronautic and electric vehicle motors fed by inverter drive under variable environmental conditions.
C. Abadie, T. Billard, T. Lebey
semanticscholar   +1 more source

Partial discharge. XI. Limitations to PD as a diagnostic for deterioration and remaining life

IEEE Electrical Insulation Magazine, 1992
For pt.X see ibid., vol.8, no.1, p.16 (1992). The correlation of partial discharge (PD) measurements with insulation degradation and failure is addressed. The limitations inherent to such diagnostics as applied to solid insulating systems are examined.
C. Laurent, C. Mayoux
openaire   +1 more source

Localization of Partial Discharges Inside a Transformer Winding Using a Ladder Network Constructed From Terminal Measurements

IEEE Transactions on Power Delivery, 2018
Precise localization of partial discharge (PD) inside a power transformer winding is a challenging task. Previously, researchers have used internal calibration or reference signals to locate the PD source.
Mithun Mondal, G. Kumbhar, S. V. Kulkarni   +2 more
semanticscholar   +1 more source