The first experiments that set the principles of the UHF technique of detecting partial discharges in gas insulated substations (GIS) were made 21 years ago, when the substation failure rate was higher than now and no satisfactory means of detecting defects in them was available.
Read MoreThis paper endorses the monitoring of SF6 gas to help identify leakages and possible changes in moisture content at an early stage, then track and compare over time.
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