Results 201 to 210 of about 42,017 (255)

Partial discharge detection using acoustic camera

2020 IEEE 3rd International Conference on Dielectrics (ICD), 2020
Problems related to PD activity within dielectric systems stressed by high voltage have been known for over a hundred years. This phenomenon over the years caused numerous fails of electric machinery and equipment. Therefore, the detection of the presence of this phenomenon became crucial.
Josef Pihera, Jaroslav Hornak, Pavel Trnka, Oldrich Turecek, Ladislav Zuzjak, Kai Saksela, Jonas Nyberg, Robert Albrecht   +7 more
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Partial Discharge Pattern Detected by New Design Partial Discharge Sensors

2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2019
This research discusses the design and testing of the bowtie antenna as a partial discharge sensor (PD). In this design, there are three types of bowtie antennas which are simulated with high frequency structure simulator (HFSS) software with various shapes and sizes, namely double layer bowtie antenna with edge modification, doube layer bowtie antenna
Muhammad Sukri Habibi Daulay, Umar Khayam   +1 more
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Stochastic detection of partial discharges

IEEE Transactions on Dielectrics and Electrical Insulation, 2013
The traditional method to detect partial discharges relies heavily on the use of high-pass filters. Whereas this is a very effective approach for normal power voltage shapes, severe problems arise when partial discharges are to be detected under waveforms generated by modern power electronics.
Tord Bengtsson, Elisabeth Lindell, Thomas Hammarstrom   +2 more
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Sensitivity in partial discharge detection

2011 Electrical Insulation Conference (EIC)., 2011
Acoustic sensors are extensively used for detecting the partial discharge (PD) in power equipment [1,2]. Picking up the PD signals from different positions can help locate where PD occurs. As for noise, the intensity of PD impulses should be strong enough to be detected by the acoustic sensor. In this study, we evaluated the performance of the acoustic
Mu-Kuen Chen, Chao-Yuan Cheng, Jeng-Ming Chen   +2 more
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Detection of Partial Discharges at High Frequencies

Proceedings of the 41st International Universities Power Engineering Conference, 2006
This paper details a partial discharge measurement detection model that has been used to produce a test circuit suitable for detection of partial discharge at high frequencies. The circuit is designed to identify partial discharges in different insulating samples stressed by non-standard (including high frequency sine-waves and square waves).
Alrumayan, F., Cotton, I.
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Radiometric partial discharge detection

2008 International Conference on Condition Monitoring and Diagnosis, 2008
Radio frequency (RF) detection of partial discharges (PD) is a long-established principle, being described in the international standard for partial discharge measurement. The growing market for mobile communication devices in recent years has led to big reductions in the cost of electronic hardware operating in the VHF and UHF bands, making advanced ...
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Partial discharge. XIII. Acoustic partial discharge detection-fundamental considerations

IEEE Electrical Insulation Magazine, 1992
An overview of the basic acoustics theory required to understand the finer points of acoustic partial discharge (PD) detection systems is given. PD and acoustic test methods are discussed, and acoustic wave motion, impedance, and intensity are described. Wave propagation and signal absorption, and the velocity of sound are discussed.
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Partial discharge. XIV. Acoustic partial discharge detection-practical application

IEEE Electrical Insulation Magazine, 1992
For pt.XIII see ibid., vol.8, no.4 (July/August 1992). The finer points of acoustic partial discharge (PD) detection systems and their common applications are treated. The PD source, propagation path of the waves, the acoustic sensor, and system noise are described.
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Partial discharges. XII. Partial discharge detection in rotating electrical machines

IEEE Electrical Insulation Magazine, 1992
For pt.XI see ibid., vol.8, no.2, p.14 et seq. (1992). Partial discharge (PD) phenomena in the windings of rotating machines are examined. PD measurements on rotating machines, both offline and online, are described. Data acquisition and analysis requirements are briefly considered. >
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A contribution in partial discharge detection

IEEE Instrumentation and Measurement Technology Conference Sensing, Processing, Networking. IMTC Proceedings, 2002
The proposed system allows the measurement of: 1. Apparent charge by means of direct analog integration of the current induced by the PD event; 2. The corresponding value of the applied voltage "V" 3. The time instant in which the Partial Discharge occurs "t/sub PD/". This particular instrumentation, devoted to the measurement of partial discharges, is
Carminati, E., Lazzaroni, M.
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