What 3 different ways can a transformer be cooled?

Transformer is a common electrical equipment, its main function is to change the voltage. During the operation of the transformer, a large amount of heat will be generated. If the heat cannot be dissipated in time, it will lead to overheating of the transformer, which will affect its normal operation or even damage it. Therefore, effective cooling of the transformer is very important.

1. Natural cooling

Natural cooling is the most basic cooling method of the transformer, and its principle is to dissipate the heat through the way of natural convection. In the natural cooling method, the heat dissipation efficiency of the transformer is low, and it is only applicable to the transformer with small power. The advantage of natural cooling is simple structure, no external energy, low maintenance cost, but the cooling effect is greatly influenced by the ambient temperature, humidity and other factors.

2. Forced air cooling

Forced air cooling is to circulate air by fans to improve the heat dissipation efficiency of transformers. Compared with natural cooling, forced air cooling can be applied to transformers with higher power, but it requires external energy to drive the fan. The advantages of forced air cooling are high heat dissipation efficiency, good cooling effect and wide application range.

3. Forced water cooling

Forced water cooling is to circulate coolant by water pump to achieve the purpose of heat dissipation. Compared with forced air cooling, forced water cooling has higher heat dissipation efficiency and is suitable for transformers with higher power. However, forced water cooling requires external water source and water pump, and the maintenance cost is higher. In addition, forced water cooling also has problems such as water leakage and corrosion that need to be paid attention to.

There are many ways to cool a transformer, and different cooling methods are suitable for different environments and conditions. When choosing a cooling method for a transformer, you should consider the capacity, load, working environment and other factors of the transformer and choose the most appropriate cooling method to ensure the normal operation and service life of the transformer. At the same time, regular inspection and maintenance of the transformer to ensure the normal operation of the cooling system is also an important measure to ensure the safe operation of the transformer.

Working principle of transformer cooling system

The cooling system of the transformer is mainly composed of two parts: internal cooling system and external cooling system. The internal cooling system ensures that the heat of the winding and the core is dissipated into the surrounding medium, while the external cooling system ensures that the heat is transferred from the medium to the external environment of the transformer.

It is worth noting that when there is a temperature difference between the upper oil temperature and the lower oil temperature of the transformer, oil temperature convection will be formed. This oil temperature convection will flow back to the oil tank after being cooled by the cooler, which will play a role in reducing the operating temperature of the transformer. And this also prevents the transformer from being in a high temperature state for a long time and avoids insulation aging and improves the power supply reliability of the equipment. In general, the working principle of the transformer cooling system is to transfer heat from the inside of the transformer to the external environment through the conduction, convection and radiation of internal heat, as well as the action of the external radiator, so as to achieve the purpose of controlling the operating temperature of the transformer.