Results 211 to 220 of about 86,487 (250)
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Partial discharge. V. PD in polymer-type line insulators
IEEE Electrical Insulation Magazine, 1991For pt.IV see ibid., vol.7, no.1, p.20 (1991). Some of the problems related to corona and partial discharge damage to polymer insulators are outlined. The basic construction of polymer insulators for overhead lines, which consist of a core, weathersheds, and metal end fittings, is described.
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Partial discharge. XVI. Ultrasonic sensing of PD within large capacitors
IEEE Electrical Insulation Magazine, 1993For pt.XV see ibid., vol.8, no.6, p.37 et seq. (1993). High-voltage capacitor technology is reviewed, and the characteristics of partial discharges (PDs) in these capacitors, the PD's ultrasonic signatures, and the effects of acoustic attenuation within capacitor windings are discussed.
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Partial discharge. VII. Practical techniques for measuring PD in operating equipment
IEEE Electrical Insulation Magazine, 1991For pt.VI see ibid., vol.7, no.3, p.9 (1991) Online partial-discharge (PD) tests for monitoring the condition of the solid dielectric insulation in high-voltage equipment are discussed. Sources of external electrical noise are identified, as are attributes of PD and noise that are helpful in drawing distinctions between them. Methods for distinguishing
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Analysis and rejection of noises from partial discharge (PD) on-site testing environment
Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417), 2004There were many kinds of interference resources in the partial discharge on-site testing environment for a power transformer. According to their spectrums, those could be classified into sinusoidal continuous noises from power carrier communication and radio systems, pulse-shaped wide-band noises including periodical and stochastical pulse-shaped ...
null Xiaoning Wang +3 more
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Partial discharge. X. PD in gas-insulated substations-measurement and practical considerations
IEEE Electrical Insulation Magazine, 1992For pt.IX see ibid., vol.7, no.6, p.5 et seq. (1991). An overview of engineering practice related to partial discharge (PD) measurements in gas-insulated substations (GISs) is provided. The following questions are addressed: why measure PD in GIS?; in which phases of the life cycle should PD be measured?; what PD measurements are presently available ...
R. Baumgartner +3 more
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Development of automatic identification method for GIS PD (Partial Discharge) defects diagnosis
2007 IEEE Lausanne Power Tech, 2007In this paper, an overview of a new GIS (gas insulated switchgear) PD (partial discharge) diagnostic algorithm for both single-defects and multi-defects in HiPDS-G (Hyundai intelligent preventive diagnostic system for GIS) developed by HHI(Hyundai Heavy Industries Co., Ltd) is given.
Young Chan Choi +4 more
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PD data analysis and evaluation of partial discharge patterns for uniform characterisation
IEE Proceedings - Science, Measurement and Technology, 2004A modern partial discharge (PD) analyser provides a complete record of PD events obtained during the time of observation. A variety of analysis techniques can be applied to the data to extract characteristic information. An analysis technique that would support instrument-independent characterisation needs to have a method of identifying characteristic
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Signal extraction methods for online partial discharge (PD) measurement of power transformers
2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM), 2015Wavelet transform-based Partial discharge ( PD) signal extraction methods have been widely adopted in the past ten years. However, these methods may still encounter some difficulties in online PD measurements, in which PD signals can be overwhelmed by noise.
Seo, Junhyuck, Ma, Hui, Saha, Tapan
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Proceedings of 2005 International Symposium on Electrical Insulating Materials, 2005. (ISEIM 2005)., 2005
This paper introduces a novel technique for partial discharge (PD) measurement and analysis: PD-CPWA (PD current pulse waveform analysis). PD-CPWA focuses on the PD current pulse waveform and its time transition from PD inception to breakdown (BD), which is closely related to PD mechanisms in electrical insulating materials.
N. Hayakawa, Y. Sugimor, H. Okubo
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This paper introduces a novel technique for partial discharge (PD) measurement and analysis: PD-CPWA (PD current pulse waveform analysis). PD-CPWA focuses on the PD current pulse waveform and its time transition from PD inception to breakdown (BD), which is closely related to PD mechanisms in electrical insulating materials.
N. Hayakawa, Y. Sugimor, H. Okubo
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European Transactions on Electrical Power, 1996
AbstractIn this paper some possibilities of further applications of a known “Streamer Partial‐Discharge Model” are proposed. These possibilities refer to the relation between the observed partial‐discharge (PD) magnitude and the applied field to the insulation.
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AbstractIn this paper some possibilities of further applications of a known “Streamer Partial‐Discharge Model” are proposed. These possibilities refer to the relation between the observed partial‐discharge (PD) magnitude and the applied field to the insulation.
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