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An Online PD Pulses Recognition Method to Extract PD Pulses Buried in External Interferences
- Source :
- Applied Mechanics and Materials; February 2011, Vol. 48 Issue: 1 p208-214, 7p
- Publication Year :
- 2011
-
Abstract
- Partial discharge (PD) pulses recognition, which is directly related to the credibility of PD online measurement results, is the key technology of the high-voltage (HV) equipment PD online monitoring. In this paper, a pulses recognition method during PD online measurement was put forward to extract PD pulses buried in external interferences, the method adopted three key steps to identify PD pulses: (a) Firstly, two pretreatments, including discrete spectrum interferences (DSI) suppression and single pulse boundaries determination, are used to convert several consecutive power cycles on-site monitoring signal to plenty of pulse - time sequences; (b) Then, an optimized adaptive clustering algorithm is adopted to classify all pulses into certain categories (c) Finally, the three-dimensional distribution of each category which indicated the pulses phase distribution with power cycles was calculated, and the PD pulses were identified by the statistics characteristics of their three-dimensional distribution. At present, the PD pulses recognition method has been used in industrial application, and on-site monitoring signal processing results has proved the effectiveness of the method.
Details
- Language :
- English
- ISSN :
- 16609336 and 16627482
- Volume :
- 48
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Applied Mechanics and Materials
- Publication Type :
- Periodical
- Accession number :
- ejs23321071
- Full Text :
- https://doi.org/10.4028/www.scientific.net/AMM.48-49.208