The difference in air temperature between the inlet and outlet of the generator is related to the heat removed by the air and the quantity of air. In addition, it is also related to the temperature and quantity of cooling water. Under the same load, the temperature difference between the inlet air and outlet air should remain unchanged, which can be compared with previous operating records. If it turns out that the wind temperature difference increases, it means that the internal loss of the generator has increased or the air volume has decreased. It should be paid attention to and the reasons should be checked and analyzed.
A sudden increase in generator internal loss may be due to a disconnection of a welding head somewhere in the stator winding, damage to the insulation between the strands, or a high local temperature in the core. The reduction in air volume may be due to reasons such asthe cooler or air duct being clogged with dirt.
Hello (Yizhong Power Plant) will answer for you:
If the generator wind temperature is too high, the stator coil temperature, the core temperature of iron and the rotor temperature will increase accordingly, causing insulation to appear. Weakening and weakening of mechanical strength will significantly reduce the life of the generator. In severe cases, it can cause insulation damage, breakdowns and accidents;
Condensation will easily occur if the wind temperature is high. too low and water droplets will condense on the generator. The insulation capacity of the generator coil is reduced, threatening the safe operation of the generator.