Why do buried box transformers substation use oil immersed transformers?

Why do buried box transformers substation use oil immersed transformers?

Firstly, we need to understand what an oil immersed transformer is. Oil immersed transformer is a type of transformer that immerses the winding and iron core in oil, and its winding operates normally through oil cooling and insulation. Compared to other types of transformers, oil-immersed transformers have better heat dissipation and higher insulation performance.

Why do buried box transformers often choose oil-immersed transformers? Firstly, oil immersed transformers can provide better heat dissipation performance. Due to the limitations of underground space, the heat dissipation conditions of buried box transformers are relatively poor, while oil-immersed transformers can use the cooling effect of oil to improve heat dissipation performance, ensuring that the transformer does not overheat during operation.

Secondly, oil-immersed transformers have high insulation performance. Buried box transformers usually face some special environmental factors, such as humidity, pollution, etc., which pose higher requirements for the insulation performance of transformers. The oil immersed transformer uses oil as the insulation medium, which can effectively isolate moisture and pollutants, providing more reliable insulation performance.

In addition, oil-immersed transformers also have lower noise levels. Buried box transformers usually need to be installed in densely populated areas of cities, and noise control is crucial for ensuring the quality of life of residents. Oil immersed transformers can reduce the noise during transformer operation and maintain a quiet environment through the buffering and noise reduction effects of oil.

Finally, the operation and maintenance of oil immersed transformers are relatively simple. Due to the installation of buried box transformers underground, maintenance and repair are relatively inconvenient, while the structure of oil immersed transformers is relatively simple, and the repair process is also relatively easy. Regular oil replacement and insulation performance testing are all necessary to ensure the normal operation of the transformer.

Oil immersed transformers are often chosen for buried box transformers, mainly because they have advantages such as better heat dissipation performance, higher insulation performance, lower noise levels, and ease of operation, maintenance, and repair. In future urban construction, buried box transformers will continue to play an important role and work together with oil-immersed transformers to assist in the safety and sustainable development of the city.

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