Analysis of partial discharge Ultrasonic wave characteristic on typical Defects in GIS

For analyzing partial discharge ultrasonic wave characteristic on typical defects in SF6 gas insulation switchgear (GIS), a 110 kV GIS was taken as an object to design and simulate the typical partial discharge models in GIS. There are point electrode model on bus and cavity of GIS, floating electro...

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Bibliographic Details
Main Authors: Yang, Jing Gang, Shi, Wen, Li, Hong Tao, Gong, Bin, Jiang, Wei Yi
Format: Conference Proceeding
Language:English
Subjects:
Defects
Dielectric barrier discharge
Metal particles
Nondestructive testing
Pattern recognition
Switchgear
Ultrasonic methods
Waveforms
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Summary:For analyzing partial discharge ultrasonic wave characteristic on typical defects in SF6 gas insulation switchgear (GIS), a 110 kV GIS was taken as an object to design and simulate the typical partial discharge models in GIS. There are point electrode model on bus and cavity of GIS, floating electrode model, air interstice model in insulator, metal particle and iron core electromagnetic shock models. PD signals on different defects were thus detected with the ultrasonic method. The experimental results indicated that the ultrasonic signals of different defects showed different characteristics in waveform, amplitude and phase resolved partial discharge chart, which is helpful in PD pattern recognition for GIS.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/20166301017