High voltage power distribution room operating procedures

First, the purpose

Ensure the safety and correctness of the operation of the equipment in the high-voltage power distribution room and ensure that the equipment is in good condition.

Second, the scope of application

Operation of power distribution equipment in high voltage power distribution rooms. Each management office may prepare detailed operational procedures based on the actual conditions of this jurisdiction.

Third, the manual operation mode:

The running technician sends power to each busbar as required. At this time, the bus coupler switch must be opened. If one of the incoming lines loses voltage or lacks power, that is, delays the trip, the operating technician can choose to exit the line-in switch where the voltage is lost, and then close the bus-coupled switch, and send power to the busbar to resume power supply.

Fourth, automatic operation mode:

When the incoming line power is normal, automatic operation can be selected. If there is voltage loss or power shortage, the delay will be tripped first, then the high voltage bus coupling switch will be automatically closed to restore the power supply; but when the incoming line returns to normal power supply, the bus switch It is necessary to select the manual operation by the on-duty personnel, and first divide the bus-coupled switch, and then put in the line switch to restore the normal power supply.

V. Accident handling:

1. Overcurrent fault: If the line over-current (including over-current and quick-break), the line switch car will automatically trip, and the fault indication will light on the instrument panel. The duty officer must understand the cause of the fault, clear the fault, and then manually reset the button.

2. Ground fault: The indication and processing procedures are the same as the overcurrent fault.

3. Transformer temperature rise fault: The indication and processing procedures are the same as the overcurrent fault.

4. Loss of voltage trip fault: The indication and processing procedures are the same as the overcurrent fault.