When a fault occurs in the busbar of the double bus connection, attention should be paid to the operation mode of the busbar protection in the process of dealing with the fault, and the busbar protection should be stopped for a short time if necessary.

After all the bus voltage disappears, the dispatcher should immediately turn on the switch (including the bus switch) for possible incoming calls and inform the operation team to conduct an external inspection of the bus.

When the voltage of the bus slot disappears due to failure and there is an obvious symbol of short circuit (such as firelight, explosion, smoke, etc.), the operation team shall not resume operation on its own and the bus equipment should be inspected in detail.

If the failure of the components connected to the bus or the failure of the tap switch results in the loss of voltage of the bus, it should be checked in detail, and immediately after isolating the fault elements of the bus slot or opening the knife gates on both sides of the fault tap switch, quickly resume bus operation and send out other shunts.