Results 221 to 230 of about 41,784 (260)

The Effect of Humidity on Partial Discharge Measurement

2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials, 2006
This paper is a study of the effect of humidity on partial discharge measurement in rotating machine. As we know, partial discharge measurement is effected by several factors and the humidity is one of the most important factors. To study the effect of humidity on partial discharge test, slot defect stator bar models were manufactured for data ...
Supawat Naprasert, Somboon Chongchaikit, Surapol Puthwattana   +2 more
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Amplitude Analysis in Partial Discharge Measurement

2009 Second International Conference on Advances in Circuits, Electronics and Micro-electronics, 2009
In commercial sphere, there is obvious the pursuit of produce electrical wares with high reliability and low risk of breakdown. It is known, the Partial Discharge (PD) is regarded as a parasitic effect occurring in insulating systems. Deep investigation of Partial Discharge activity is necessary for longer service life and better reliability of high ...
Tomas Havlicek, Jiri Haze, Jaroslav Bousek   +2 more
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Intelligent partial discharge measurement device

Proceedings of 1994 IEEE International Symposium on Electrical Insulation, 2002
This paper introduces a entirely new intelligent partial discharge measurement device that integrates with a microcomputer, A/D, time series control and the filter amplifier circuit for analog signal. It has four independent parallel A/D channels, the highest sampling frequency is 20 MHz and data store is 512 K.
null Li Jianming, null Yang Jinping
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Partial discharge measuring technique

2001
The partial discharge measurement is a typical non-destructive test and it can be used to judge the insulation performance at the beginning of its service time taking into account the reduction of the performance during the service time by the ageing whereby the ageing depends on numerous parameters like electrical stress, thermal stress and mechanical
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Experience with UHF partial discharge measurements

Proceedings of 2002 IEEE 14th International Conference on Dielectric Liquids. ICDL 2002 (Cat. No.02CH37319), 2003
Some tests on UHF measuring techniques on transformers and oil-paper insulation models have been reported in literature. The results indicate the feasibility of this method for oil-paper insulation, but are not conclusive. To have a good perspective of this method, UHF partial discharge (PD) measurements were conducted on small oil-paper insulation ...
R. Kuppuswamy, S. Lelaidier
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Interpretation of digital partial discharge measurements

IEE Colloquium on PD Display Systems and Analytical Software, 1996
The presence of partial discharges is one of the most prominent indicators of defects and ongoing degradation processes in electrical insulation systems. On-line partial discharge measurements provide information about progressing degradation under operational stress or defects which are only excited by the operational stress (e.g.
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On the UHF partial discharge measurement in transformers

2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2004
Partial discharge detection sensitivity of three types of UHF partial discharge (PD) couplers, reportedly used in the literature, has been studied in comparison using experimentally simulated discharges and those discharges observed during PD acceptance testing of transformers.
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Partial discharge measurements: possibilities and limitations

[1992] Proceedings of the 4th International Conference on Conduction and Breakdown in Solid Dielectrics, 2003
Several aspects of partial discharge (PD) measurement and processing of PD data are discussed. It is pointed out that the ABC equivalent is not a fully valid equivalent of a void in the insulation and should be used with some care. The use of broadband measuring systems gives a gain in sensitivity, but calibration can be a problem when they are used on
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Partial-discharge measurements for insulation quality

Power Engineering Journal, 1992
There is one common factor that, in different forms, runs throughout the entire electrical and electronics industries. That factor is the requirement for insulation that gives the necessary mechanical, thermal and electrical properties needed for particular applications.
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Preliminary partial discharge measurements with a computer aided partial discharge detection system

2009
Partial discharges (PDs) can be destructive to electrical insulation as they may degrade the material in time. Consequently, studies have been made to develop efficient systems for PD measurements and monitoring. Due to the complexity of PDs as well as factors that can affect PD characteristics, the research on PD measurement is still active.
Altay, Özkan, Kalenderli, Özcan, Merev, Ahmet, Dedeoglu, Serkan, Gulnihar, Kaan   +4 more
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