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Noise Rejection and Detection of Partial Discharges Under Repetitive Impulse Supply Voltage
IEEE transactions on industrial electronics (1982. Print), 2020Partial discharge (PD) detection is a fundamental tool for the design and diagnosis of insulation systems, particularly organic materials that must operate throughout their life without PD.
R. Ghosh +3 more
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Analysis of Internal Partial Discharge Based on PD Current Waveform
2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2008The analysis of partial discharge (PD) phenomenon to cause long-term degradation of electrical insulation systems is essential to development of electrical insulation technology. The PD pattern on the relation between PD magnitude and the phase of applied voltage is well known one of the electrical insulation diagnosis methods for high voltage ...
Kenji Nanao +2 more
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Effect of magnetic nanoparticles on partial discharges in transformer oil
, 2020We report on an experimental study of partial discharges (PD) in transformer oil with four different volume concentrations of superparamagnetic iron oxide nanoparticles (SPION) ranging from 0 to 0.0004 vol%. To investigate the PD, a specific high-voltage
J. Kurimský +5 more
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Partial discharge (PD) measuring techniques
15th IET International School on High Voltage Engineering and Testing 2008, 2008The physical background of partial discharges will be explained on simple models. The requirements on the complete partial discharge measuring systems including the calibration and evaluation of the measuring results will be discussed and examples of partial discharge measurements on transformers in the laboratory and on site will be presented. Finally
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Partial discharges in HV machines; initial considerations for a PD specification
IEE Proceedings A Science, Measurement and Technology, 1993Partial discharge (PD) specifications exist for all types of electrical equipment except motors and generators. Whereas specifications essentially require that the equipment is discharge-free the stator conductor bar insulation of the motors and generators under consideration is micaceous and has excellent PD resistance.
J.W. Wood +4 more
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Partial discharge. IV. Commercial PD testing
IEEE Electrical Insulation Magazine, 1991For pt.III see ibid., vol.6, no.6, p.11 et seq. (1990). Commercially available partial discharge (PD) detectors are described, along with their important characteristics. The primary characteristics that detectors have in common and that are used as a basis for classification are the number of inputs used, the bandwidth of the detector, and the method ...
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PDTools: A toolbox of partial discharge (PD) signal analysis for transformer condition assessment
2017 IEEE Power & Energy Society General Meeting, 2017Partial discharge (PD) measurement of power transformers provides a means for condition assessment of their insulation systems. To reach an informed assessment on the condition of a transformer's insulation system, it needs to appropriately analyze the measured PD signals. Though abundant methods have been proposed for PD signal analysis, it is still a
Ma, Hui +4 more
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Optical Sensing Technology for Acoustic Detection of Partial Discharges: A Review
IEEE transactions on dielectrics and electrical insulationPartial discharge (PD) causes different physical processes in different mediums, exciting acoustic signals with wide-frequency distribution. And the attenuation and catadioptric process of the acoustic signal caused by the propagation medium weaken the ...
Zhicheng Wu +5 more
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Partial Discharges Pattern Recognition of Transformer Defect Model by LBP & HOG Features
IEEE Transactions on Power Delivery, 2019Partial discharge (PD) measurement and identification have great importance to condition monitoring of power transformers. In this paper, a new method for recognition of single and multi-source of PD based on extraction of high level image features has ...
Keyvan Firuzi +3 more
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Joint time-frequency analysis for partial discharge (PD) signal extraction
2018 12th International Conference on the Properties and Applications of Dielectric Materials (ICPADM), 2018The joint time-frequency analysis has been recently applied to PD signal extraction. Its advantage is widely considered to be the capability of analyzing signals in time and frequency domains at multiple scales. This paper presents a study on recent advances in the application of joint time-frequency analysis techniques to extract PD signal from noise.
Ma, Hui +3 more
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