Transformer oil cooling system

Abstract

The invention discloses a transformer oil cooling system, which includes: a refrigeration system, a forced oil circulation system and an electric control system; the refrigeration system includes a refrigeration compressor, a condenser, a liquid storage cylinder, a dry filter, an expansion device, an evaporator, Gas-liquid separator and refrigerating pipeline, the above-mentioned equipments are sequentially connected into a circular closed loop through the refrigerating pipeline; the forced oil circuit circulation system includes: oil-immersed transformer, circulating oil pump, evaporator and oil pipeline, and the above-mentioned equipment passes through the oil pipeline The electric control system includes a temperature sensing element and a temperature controller; the temperature controller is electrically connected with the temperature sensing element, a circulating oil pump, a refrigeration compressor and a condensing fan. The invention uses a refrigeration system to forcibly lower the temperature of the oil inside the transformer, and has the characteristics of simple installation and high temperature control accuracy, and can control the oil temperature and reduce faults even if the transformer is in a harsh environment.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a transformer oil cooling system. Background technique [0002] Transformer is an important and indispensable power equipment in the transmission grid, which plays a vital role in regulating the voltage of the grid. Power transformers will generate core loss and winding loss during use, and these losses will cause the temperature of the core and winding to rise. In order to ensure the safe and reliable operation of the transformer, the winding temperature, iron core temperature and transformer oil temperature of the transformer need to be limited within the safe range, so the transformer needs to be radiated and cooled. At present, most of the transformers operating on the power grid are still oil-immersed transformers. The usual oil-immersed transformers rely on the cooling fins arranged around the transformer to cool down the internal transformer oil. However, because the...

AI Technical Summary

Problems solved by technology

At present, most of the transformers operating on the power grid are still oil-immersed transformers. The usual oil-immersed transformers rely on the cooling fins arranged around the transformer to cool down the internal transformer oil. However, because the cooling fins are greatly affected by the environment, often When the ambient temperature is high, the expected effect cannot be achieved, which will cause major faults in the transformer. For example, due to the high oil temperature, the insulation performance of the transformer oil will decrease, the coil will age, and even the transformer will catch fire, explode and other accidents.

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