Results 371 to 380 of about 3,438,442 (401)

Partial discharges in solid insulation

IEE Colloquium on Advances in HV Technology, 1996
Partial discharges (PD) seem to be somewhat inevitably part of the life of most solid insulating systems for HV plant. If left undiscovered/unchecked they may well result in a significant shortening of that life. Their presence stems from a combination of poor manufacturing techniques, creating voids or inclusions in otherwise homogeneous solid ...
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Measuring system for partial discharge

Quality Measurement: The Indispensable Bridge between Theory and Reality (No Measurements? No Science! Joint Conference - 1996: IEEE Instrumentation and Measurement Technology Conference and IMEKO Technical Committee 7. Conference Proceedings, 2002
Measuring of the partial discharge (PD) parameters of the insulating systems is very important. The prompt insulating system estimation and its remaining life time give the great savings. The new, complex PD measuring methods are now developed in the world because conventional methods do not give valid information of the insulating system conditions ...
D. Vukic, N. Kartalovic, Predrag Osmokrovic, I. Petkovic   +3 more
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Digital analysis of partial discharges

IEEE Transactions on Dielectrics and Electrical Insulation, 1995
In this paper relevant aspects of digital processing of partial discharge (PD) as measured by conventional PD detection methods are discussed. Moreover, a systematic study of PD quantities is presented and discussed within the scope of practical PD analyzers, including recognition of defects in certain HV insulation configurations. >
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Nature of partial discharges and their measurement

Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1987, 1987
There are perhaps very few measurement techniques that have contributed as much as partial discharge detection in the evaluation of high voltage apparatus, devices and cables. Notwithstanding, the progress that has been achieved over the past several decades in the description and understanding of the various mechanisms that may precipitate electrical ...
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Partial discharge in dielectric fluids [PDF]

Conference Record of the 1992 IEEE International Symposium on Electrical Insulation, 2003
Summary form only given. The primary interest of this study was in the temporal and spatial development of partial discharges at voltages near their inception. Results were obtained during a short time interval after the application of a DC voltage to the test gap.
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Ignitions caused by partial discharges

Fifth International Conference on `Electrical Safety in Hazardous Environments', 1994
As a result of explosions with unexplained causes in high-voltage motors, partial discharges as one possible ignition source of explosive gas-air-mixtures are being discussed. In this paper, experimental investigations concerning partial discharges in explosive atmospheres are described arising from elementary electrode arrangements and motor models ...
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Editorial: Partial discharges

IEE Proceedings - Science, Measurement and Technology, 1995
G.C. Stevens, J.C. Fothergill, A. Kelen, F.H.. Kreuger   +3 more
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Measurements of the energy of partial discharges

Proceedings., Second International Conference on Properties and Applications of Dielectric Materials, 2003
The purpose and the principle of measurements of partial-discharge (PD) energy are described. Two methods of PD energy measurements are presented. The first method gives the discrete values of the energy of PD pulses while the second method realized the averaging of the energy in a specific measurement time.
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Basics of Partial Discharge Measurement

2019
Partial discharge (PD) denotes a small, localized electrical discharge in the insulation between conductors, occurring when the local electric field strength exceeds a critical value. Prolonged exposure to partial discharges is known to degrade the dielectric behavior of the insulation and may even lead to complete breakdown. PD testing of high-voltage
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Phosphorene as Cathode Material for High‐Voltage, Anti‐Self‐Discharge Zinc Ion Hybrid Capacitors

Advanced Energy Materials, 2020
Ao Chen, Chunyi Zhi, Guojin Liang
exaly