Key points for operation, maintenance and upkeep of power transformers

The key points of operation, maintenance and upkeep of power transformers mainly include the following aspects:

1、 Run environment check

1. Ensure that the channels around the transformer are unobstructed and free of accumulated debris for easy repair.

2. Clean up accumulated water and snow to ensure that the air environment does not affect the normal operation of the transformer.

3. Check whether the lighting facilities are in good condition and whether the fire-fighting equipment is effective.

2、 Transformer oil inspection

1. Regularly check the oil level to ensure that it is normal and there is no false oil level phenomenon.

2. Monitor the oil temperature to ensure that it is within the normal range. Typically, the top oil temperature should not exceed 95 ℃.

3. Check for any changes in oil color, sediment or impurities in the oil.

4. Pay attention to the electromagnetic sound of the transformer and compare it with the past to see if there are any abnormalities.

3、 Ventilation and cooling system inspection

1. Check if the exhaust fan of the transformer is running properly to ensure good heat dissipation.

2. Monitor the working status of the temperature controller to ensure its normal operation.

3. For transformers with valves, check whether various valves are opened or closed correctly according to the working requirements.

4、 Dehumidification and drying device inspection

1. Regularly check the desiccant of the transformer to ensure its effectiveness and replace it in a timely manner.

5、 Transformer appearance inspection

1. Check whether the welding points of the transformer have fallen off and whether the heat sink has cracks.

2. Regularly clean the dust and dirt on the surface of the transformer.

3. Check if the bolt joints are loose and if the contact is good.

6、 Other precautions

1. Regularly conduct comprehensive inspections and maintenance of power transformers, with responsibility assigned to individuals.

2. Problems should be dealt with promptly to avoid delays leading to more serious consequences.

3. For transformer operation under special circumstances such as overload, high temperature, etc., monitoring should be strengthened and corresponding measures should be taken.

4. Ensure that the grounding of the transformer is good, all connections are tightened, all side lightning arresters are working properly, and all relay protection devices are working properly.

In summary, the operation, maintenance, and upkeep of power transformers involve multiple aspects, including operating environment, transformer oil, ventilation and cooling systems, dehumidification and drying devices, transformer appearance, and other precautions. Only by comprehensively and meticulously carrying out these tasks can the safe and stable operation of transformers be ensured.