Partial Discharge Monitoring Method in Switchgear with Bushing High-Voltage Sensor

10 kV and 35 switchgear are the key equipment in power grid, safety of their insulation is related to stability entire grid. But accuracy traditional partial discharge detection method difficult meet requirements new SF6 insulated switchgear. This work analyzes feasibility using high-voltage sensor bushing detect discharge, analysis shows that synchronous signal can be obtained from sensor. Detection experiments were carried out three typical models, with both HFCT a The measurement results show effectively obtain PRPD plot similar HFCT. It also found adjusting sampling resistance change range