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The very fast transient overvoltage (VFTO) generated during switching of the disconnector (DS) in gas-insulated switchgear (GIS) may threaten the insulation of electrical equipment. DS characteristics are important influence factors for VFTO. To study the influence of DS characteristics on VFTO in GIS, an experimental study was conducted in two established full-scale 1100-kV GIS test circuits. More...
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