Due to the advantages of electrical performance and light structure
cross-linked polyethylene (XLPE) is widely applied in the insulation field of high-voltage AC/DC cable. However
in recent years
the number of power outages caused by cable faults has been increasing year by year. Aiming at the gap discharge problem of 500 kV XLPE cable sheath to clamp during the no-load energization of main transformer in a hydropower plant
firstly
ATP-EMTP software is used to establish the electromagnetic transient simulation analysis model of primary equipment in the whole plant. Then
the fault causes of discharge phenomenon of the cable aluminum sheath are analyzed
and the different kinds of fault treatment measures are compared. Finally