As an important part of power system, transformer is responsible for providing stable and efficient power for power system. In order to ensure that the transformer continues to operate in optimal condition, regular maintenance and inspections must be carried out. In this blog post, we will discuss the annual maintenance projects that should be performed on the transformer.
1, visual inspection: should visually check the transformer whether there is deformation, cracks, oil leakage and other conditions. Any problem found in the inspection shall be reported immediately.
2, oil detection: oil is a key part of the transformer, the need to test the oil to ensure that there is no water, dirt, air and other impurities in the oil. The oil must be tested for dielectric properties and dissolved gas analysis (DGA) to detect any anomalies.
3. Casing: The inspector should inspect the transformer casing for any signs of physical damage, oil leakage or cracks. Any faults found should be repaired immediately.
4, winding resistance: the transformer winding resistance should be measured to ensure that the resistance value is within the allowable range. The obtained data can be compared with previous readings to determine if there has been any change in resistance.
5. Insulation resistance: The insulation resistance inside the transformer must be tested to ensure that there is enough insulation to prevent any current leakage. Insulation resistance test is an important tool for measuring dielectric strength, insulation deterioration and moisture content of transformer oil.
6. Cooling system: The engine cooling system of the transformer must be checked for any signs of physical damage, oil leakage and other failures. All moving parts, such as pumps, fans and motors, should be functionally tested.
7, tap-changer: the tap-changer mechanism is an important part of the transformer, and it needs to be tested and operated frequently. The agency should be tested to make sure it switches correctly and smoothly.
8. Arrester: The arrester of the transformer must be tested, and the problem should be solved as soon as possible. Any fault found should be properly repaired or replaced to ensure its normal operation.
9, transformer oil filtration: transformer annual maintenance, the oil must be filtered to remove moisture, dirt, air and other impurities. The transformer oil filtration process helps extend the life cycle of the transformer and reduce its maintenance costs.
In short, transformers play a vital role in the power supply of the power system, and proper maintenance of transformers can avoid downtime, minimize maintenance costs and extend the service life of the transformer. The above maintenance procedures should be carried out annually to ensure the safe, reliable and efficient operation of the transformer.