Title :
Characterisation of acoustic signal and pattern recognition of free moving metallic particle motion modes in GIS
Author :
Ahmed, Feroz ; Darus, A.B. ; Yusoff, Zulkalnain ; Haque, Md Enamul
Author_Institution :
Fac. of Electr. Eng., Univ. Technol. of Malaysia, Malaysia
Abstract :
Free metallic particles, inside gas insulated switchgear (GIS) apparatus are considered hazardous to the insulation system, can be detected using acoustic sensors placed on the enclosure. From acoustic measurements, it is rather easy to determine the partial discharge pulses caused by loose or fixed particles. One can readily recognise the motion modes of the free particles by studying the acoustic signal. This paper presents the analysis of free metallic particle motion modes in GIS apparatus from acoustic measurements. The parameters such as maximum acoustic amplitude, number of acoustic pulses, mean value of maximum amplitude of 10 measurements, number of pulses which exceed the specified % of maximum amplitude characterising partial discharge activity of Al as well as Cu particles of different shapes are investigated
Keywords :
acoustic pulses; acoustic signal detection; acoustic variables measurement; gas insulated switchgear; nonelectric sensing devices; partial discharges; pattern recognition; Al; Cu; GIS; acoustic measurements; acoustic pulses; acoustic sensors; acoustic signal; enclosure; free moving metallic particle; gas insulated switchgear; insulation system; maximum acoustic amplitude; mean value; motion modes; partial discharge pulses; particle shapes; pattern recognition; Acoustic measurements; Acoustic pulses; Acoustic signal detection; Gas insulation; Geographic Information Systems; Partial discharges; Pattern recognition; Pulse measurements; Shape measurement; Switchgear;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652078
