Operation specifications and precautions for power shutdown in power distribution room

When the power supply is stopped in the distribution room, a slight negligence or operation error may cause a major power accident. In order to ensure the safety and accuracy of the operation, we must strictly follow the formal operation steps and comply with the relevant operating specifications. This paper will introduce in detail the operation process and precautions of power supply shutdown in the distribution room.

I. Operation process:

1. Fill in the operation ticket: Before the power shutdown operation, you need to fill in the operation ticket first. Operation ticket is a document that records important information such as operation steps, operators, guardians, and persons in charge, and is the key to ensure operation standards.

2. Simulation screen simulation operation: Before the actual operation, you should first simulate the operation on the simulation screen to verify the correctness of the operation steps and get familiar with the operation process.

3. Signature and seal: the operator, guardian and responsible person must sign and seal the operation ticket to confirm their respective responsibilities and the accuracy of the operation.

Second, stop power sequence:

1. In the process of stopping and transmitting power in the distribution room, the order of stopping and transmitting power is crucial and must not be mistaken. The specific order is as follows:

2. Power outage: first stop low-voltage electricity, and then stop high-voltage electricity. When the low-voltage power is stopped, the low-voltage branch switch should be stopped first, and then the low-voltage main switch, and the control loop should be stopped first, and then the main loop should be stopped.

3. Power supply: The order of power supply is the opposite of power failure. First send high voltage, then send low voltage. When sending low-voltage power, send the low-voltage main switch first, and then send the low-voltage branch switch, also send the main circuit first, and then send the control circuit.

Third, high voltage power shutdown precautions:

1. When stopping high-voltage electricity, the circuit breaker should be stopped first, and the isolation switch should be pulled. If the high voltage inlet line has two isolation switches, pull the load side isolation switch first, and pull the power side isolation switch later.

2. When sending high voltage cables, the order is reversed. First close the power side isolation switch, then close the load side isolation switch, and finally close the circuit breaker.

3. At any time, it is strictly prohibited to pull and close the isolation switch with load. This is to prevent the arc from short-circuiting and ensure the safety of the operator.

The shutdown operation of the power distribution room is an important link in the power system, which requires us to treat every operation with a rigorous attitude to ensure the accuracy and safety of the operation. Only by strictly observing the operation procedures and norms can we avoid the occurrence of power accidents and ensure the safe operation of the power system.