A novel technique for detecting electromagnetic wave caused by partial discharge in GIS

For the insulation diagnosis of GIS, it is necessary to detect partial discharge (PD) under noisy condition and to specify the direction of electromagnetic wave radiation due to PD. We proposed "phase gate control method" for discriminating the electromagnetic wave caused by PD in SF/sub 6...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2001-10, Vol.16 (4), p.545-551
Main Authors: Hoshino, T., Kato, K., Hayakawa, N., Okubo, H.
Format: Article
Language:English
Subjects:
Diagnosis
Dipole antennas
Discharge
Electromagnetic interference
Electromagnetic radiation
Electromagnetic scattering
Electromagnetic wave polarization
Electromagnetic waves
Estimates
Gas insulation
Geographic Information Systems
Insulation
Noise
Partial discharges
Polarization characteristics
Switchgear
Voltage
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Summary:For the insulation diagnosis of GIS, it is necessary to detect partial discharge (PD) under noisy condition and to specify the direction of electromagnetic wave radiation due to PD. We proposed "phase gate control method" for discriminating the electromagnetic wave caused by PD in SF/sub 6/ gas from external noises. The proposed method enabled us to discriminate PD of about 100 pC in SF/sub 6/ gas from external noises of more than 10000 pC in air. We also compared polarization characteristics of electromagnetic wave radiated from PD with those from a half-wave dipole antenna, and could estimate the radiation length of electromagnetic wave caused by PD. The results derived in this paper contribute to the insulation diagnosis of GIS on-site.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.956735