What should substation operators pay attention to when inspecting transformers in hot weather?

The daily inspection of the transformer is still the same:

1) The oil temperature of the transformer and the thermometer should be normal, the oil level of the oil conservator should correspond to the temperature, and there should be no oil leakage in any part. , oil leakage.

2) The casing oil level should be normal. There are no cracks, cracks, serious oil stains, traces of discharge or other abnormal phenomena on the outside of the casing.

3) The transformer sound should be normal. When the transformer is normal, it should make a buzzing sound. If there is a crackling sound, it means that the transformer has a short circuit.

4) The hand temperature of each cooler should be similar, and the fans and oil pumps should be operating normally. The oil flow relay works fine.

5) The moisture absorber is intact and the adsorbent is dry.

6) There should be no signs of heat in lead joints, cables and busbars.

7) The pressure relief valve or safety airway and explosion-proof membrane should be intact.

8) There should be no gas in the gas relay.

9) Each control box and secondary terminal box should be tightly closed and free from moisture.

However, high temperature weather requires special inspections of transformers, increasing the number of inspections, especially checking the temperature of each transformer (checking whether the cooler is operating normally) and whether the oil level is too high.