Owing to the closed characteristics of gas insulated switchgear (GIS) devices

handling of GIS equipment accident has become more complicated than that of open devices. An analysis is made of the rapid power supply scheme after GIS bus trip accident. In this scheme

the fault area is accurately located just using fault recorded data through protection principles

the protection setting value of lines and transformers without the need of modifying and restoring the manually set isolating switch status of bus protection. The fault of lines

transformers and bus can be removed without delay during the restoration of power supply

while the power recovery rate and the stability of power grid are improved greatly. The proposed scheme has some engineering application value in handling GIS bus trip accidents.