The Principle and Application of AC Voltage Withstand Test for GIS without Power Cut

Qian Wang; Ying Kai Long; Gao Lin Wu; Qian Bo Xiao

doi:10.4028/www.scientific.net/AMM.651-653.1113

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 651-653The Principle and Application of AC Voltage...

The Principle and Application of AC Voltage Withstand Test for GIS without Power Cut

Abstract:

In order to check whether there are defects in GIS (gas-insulation-switchgear), it is necessary to do AC voltage withstand test before putting into operation. According to the standards, when doing AC voltage withstand test after GIS expansion or maintenance, the original neighboring parts should be power cut and grounded. For the double bus substation,it means that the whole substation should be power cut, which will decrease the power supply reliability of the grid and have a tremendous impact on the power grid To solve the problem, this paper presents a new AC voltage withstand test method for GIS without power cut, and explains principles and field applications of this method.