Title :
Application of digital signal processing techniques to analyze partial discharge data
Author :
Basappa, Prathap ; Lakdawala, Vishnu
Author_Institution :
Dept. of Comput. Sci., Norfolk State Univ., VA, USA
Abstract :
Experiments were conducted to investigate whether the electrical tree growth in PMMA (polymethylmethacrylate) could be characterized by the partial discharges (PD) that evolved during its progress. PMMA samples with a needle-plane gap were aged under 50 Hz AC voltage, which gave rise to branch and bush type trees. The PDs were collected for a constant duration at regular intervals of times continuously all through the aging sequence. The tree growth was monitored by taking the microphotographs periodically, without interrupting the aging voltage. The parameters of the PD amplitude distributions obtained during the growth were analyzed later by correlation and spectral analysis methods
Keywords :
ageing; insulation testing; organic insulating materials; partial discharge measurement; spectral analysis; trees (electrical); 50 Hz; PD amplitude distributions; PMMA; aging sequence; aging voltage; branch type trees; bush type trees; digital signal processing techniques; electrical tree growth; needle-plane gap; partial discharge data; partial discharges; polymethylmethacrylate; spectral analysis methods; Aging; Data analysis; Digital signal processing; Microscopy; Needles; Partial discharges; Pulse measurements; Signal analysis; Trees - insulation; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885296
