What are the preventive measures for common transformer failures？

Transformers due to long-term operation, environmental factors and other reasons, transformers may have a variety of failures, affecting the normal operation of the power system. Therefore, it is important to take effective preventive measures to ensure the stable operation of the transformer. Here are some common transformer failure prevention measures:

1. Regular inspection and maintenance: Regular inspection of the transformer, including the measurement of appearance, temperature, oil level and other parameters, as well as insulation resistance, grounding resistance and other electrical performance testing. Discover and deal with potential problems in time to prevent faults.

2. Strengthen insulation protection: the insulating material of the transformer is one of the main reasons for its failure. Therefore, the protection of transformer insulation should be strengthened, and aging or damaged insulation materials should be replaced regularly to ensure good insulation performance.

3. Control temperature rise: the transformer will generate heat during operation, if the temperature rise is too high, it will lead to aging and damage to the insulation material. Therefore, the cooling system of the transformer should be reasonably designed to ensure that the temperature rise of the transformer is controlled within the allowable range.

4. Prevent overload operation: the transformer should avoid overload operation during operation, because overload will cause excessive thermal stress inside the transformer and accelerate the aging and damage of insulating materials. Therefore, the capacity of the transformer should be reasonably selected according to the load situation, and the overload protection device should be set up.

5. Prevent external short circuit: External short circuit is one of the main reasons for transformer failure. In order to prevent external short circuit, appropriate protective devices should be set up, such as fuses, circuit breakers, etc., to cut off the fault current in time and protect the safety of the transformer.

6. Strengthen lightning protection: lightning is one of the common causes of transformer failure. In order to strengthen lightning protection, devices such as lightning arrester or lightning rod should be installed to introduce lightning into the ground and reduce the impact on the transformer.

7. Strengthen environmental protection: The environment around the transformer has a great impact on its operating stability. Therefore, the management of the surrounding environment of the transformer should be strengthened to prevent the influence of pollution, corrosion and other factors.

In short, through regular inspection and maintenance, strengthening insulation protection, controlling temperature rise, preventing overload operation, preventing external short circuit, strengthening lightning protection and strengthening environmental protection and other measures, can effectively prevent the occurrence of transformer failures and ensure the normal operation of the power system.