Reasons for the light gas operation of the transformer

The transformer is one of the most important equipment in the power system. Its main function is to convert high-voltage electrical energy into low-voltage electrical energy to supply people in daily life and industrial production. Various electrical equipment required. However, during the use of the transformer, some unexpected situations sometimes occur, such as light gas operation. So, what exactly causes the light gas operation of the transformer?

First, we need to understand light gas and its role in transformers. Light gas, also called a pressure reliever, is a device used to regulate the internal pressure of a transformer. It mainly consists of a spring, a copper pipe with a pressure regulating valve, and a Bell integrated mechanism. When the pressure inside the transformer reaches a certain level, the light gas pressure regulating valve will automatically open to release excess pressure to ensure the safe operation of the transformer.

Under normal circumstances, light gas will not operate because the oil volume and temperature inside the transformer are in a stable state. However, when the following conditions occur, light gas may operate:

1. The amount of oil inside the transformer is too small: The oil inside the transformer can not only cool the transformer, but also carry voltage. If the amount of oil Too little will cause electrical breakdown, resulting in a spike in overvoltage that causes light gas to operate.

2. The temperature of the oil inside the transformer is too high: If the temperature of the oil inside the transformer is too high, the viscosity of the oil will decrease, thus affecting the flow performance of the oil. At the same time, high temperature will also cause the insulation material of the transformer to age, thereby reducing the insulation performance. In this case, light gas may be activated to avoid overheating of the transformer.

3. There is a fault inside the transformer: If there is a fault inside the transformer, such as a rupture of the insulation material or a short circuit in the transformer, it may cause the internal pressure of the transformer to be too high, causing light gas to operate.

4. Excessive current after the transformer is powered on: When the transformer is powered on, if the load current is too large, it may cause electrical breakdown inside the transformer, resulting in peak overvoltage and light gas operation. .

5. Improper transportation or installation of the transformer: If the transformer collides or is impacted by external forces during transportation or installation, it may cause oil leakage or short circuit inside the transformer, causing light gas to operate.

In addition to the above situations, there are other factors that may also cause light gas operations, such as improper maintenance of the transformer and excessive ambient temperature.

Summary:

During the use of transformers, the movement of light gas is a relatively common phenomenon. The main reason for light gas operation is that the pressure inside the transformer is so high that the excess pressure needs to be released by adjusting the valve. Therefore, in daily maintenance work, it is necessary to inspect and maintain the oil volume, temperature, insulation materials and other aspects of the transformer to ensure the stable operation of the transformer and avoid light gas operations. In addition, it is also necessary to carry out safe use, standardized transportation and correct installation of the transformer to avoid damage or collision of the transformer, which may cause unnecessary light gas operations.