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Partial discharge measurement of a floating electrode defect in GIS under power frequency and the oscillating lightning impulse voltage are investigated in this paper. Partial discharge measurement under power frequency voltage is carried out based on IEC60270 standard by which a typical partial discharge characteristics of a floating electrode defect in GIS is demonstrated. The high frequency current...
It is well known that impulse voltages strongly affect the reliability of gas-insulated switchgear (GIS) under actual operational conditions. The alternating-current (ac) withstand voltage test and its corresponding partial discharge (PD) measurement are inadequate for the detection of all the hidden flaws in GIS. Such inadequacy can be compensated by additional impulse withstand voltage test and...
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