Save to Project icon | Click to Close Quick AbstractQuick Abstract | PDF file iconPDF (410 KB) Literature data regarding the behavior of partial discharge inception voltage (PDIV) under repetitive impulsive voltage waveforms is contradictory. Some authors have found that rise time can lower PDIV, others just the opposite. The picture complicates further when repetitive PDIV (RPDIV) is discussed. In many papers, antenna sensor working in the UHF range were used, but no standardized sensors (and setup geometry) is defined yet. Therefore, if some parameters of the supply waveform could affect partial discharge spectra, that could be one of the possible reasons for the differences reported in literature. In this paper, experiments carried out on crossed pairs subjected to square voltages, aimed at inferring the dependence of rise time on partial discharge pulse spectra, are discussed. The results show that shorter rise times favor the inception of pulses having large magnitude and frequency content. As a consequence, depending on the bandwidth of the sensor-detector chain, PD detection sensitivity can vary with rise time, thus affecting PDIV measurement
The influence of square voltage rise time on partial discharge spectra 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena / P. Wang;A. Cavallini;G. C. Montanari. - STAMPA. - (2012), pp. 129-132. (Intervento presentato al convegno 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena tenutosi a Montreal, Quebec, Canada nel October, 14-17 2012) [10.1109/CEIDP.2012.6378738].
The influence of square voltage rise time on partial discharge spectra 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena
CAVALLINI, ANDREA;MONTANARI, GIAN CARLO
2012
Abstract
Save to Project icon | Click to Close Quick AbstractQuick Abstract | PDF file iconPDF (410 KB) Literature data regarding the behavior of partial discharge inception voltage (PDIV) under repetitive impulsive voltage waveforms is contradictory. Some authors have found that rise time can lower PDIV, others just the opposite. The picture complicates further when repetitive PDIV (RPDIV) is discussed. In many papers, antenna sensor working in the UHF range were used, but no standardized sensors (and setup geometry) is defined yet. Therefore, if some parameters of the supply waveform could affect partial discharge spectra, that could be one of the possible reasons for the differences reported in literature. In this paper, experiments carried out on crossed pairs subjected to square voltages, aimed at inferring the dependence of rise time on partial discharge pulse spectra, are discussed. The results show that shorter rise times favor the inception of pulses having large magnitude and frequency content. As a consequence, depending on the bandwidth of the sensor-detector chain, PD detection sensitivity can vary with rise time, thus affecting PDIV measurementI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.