Title :
Ultra high frequency electromagnetic wave detector for diagnostic of metal clad switchgear insulation
Author :
Ozawa, J. ; Shindo, K. ; Saruta, H. ; Yamashita, M. ; Takahashi, E.
Author_Institution :
Hitachi Ltd., Japan
fDate :
4/1/1994 12:00:00 AM
Abstract :
This paper describes a newly developed ultra high frequency electromagnetic wave (UHF wave) detector for tracking discharges in metal clad switchgear (MCS) and its performance. The tracking discharges included waves with frequencies of more than a few hundred megahertz and the attenuation of the UHF waves transmitted through a MCS enclosure was about 10 dBμV. On the other hand, noise in the ultra high frequency range was relatively low. The simple UHF wave detector was tested in the laboratory and field
Keywords :
charge measurement; detectors; insulation testing; magnetic variables measurement; partial discharges; switchgear; UHF EM wave detector; electromagnetic wave detector; metal clad switchgear; noise; partial discharge measurement; switchgear insulation diagnosis; tracking discharges; ultra high frequency; Attenuation; Conductors; Detectors; Dielectrics and electrical insulation; Electromagnetic scattering; Frequency; Insulation life; Partial discharges; Power transformer insulation; Switchgear;
Journal_Title :
Power Delivery, IEEE Transactions on
