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Structural Design of Underground Transformers: Optimizing Energy Efficiency and Stable Output

The structure of the underground transformer is designed to minimize energy loss during the power conversion process while providing stable and reliable power output.

Coil design: The coil of the underground transformer is one of its core components. Through precise design and layout, the coils enable efficient power transmission. First, use a wire material of sufficient thickness to reduce resistance, thereby reducing energy loss inside the coil. Secondly, the number of turns and size of the coil are precisely calculated to ensure that the magnetic field generated when current passes through it can be converted into electrical energy to the maximum extent, rather than being dissipated as heat energy. In addition, in order to reduce the capacitance and induction between coils, it is also crucial to use appropriate winding methods.

Iron core material: The iron core plays a key role in conducting magnetic fields in underground transformers. Choosing materials with high magnetic permeability is critical to reducing hysteresis losses and eddy current losses. Silicon steel sheets are a common choice because of their excellent magnetic permeability and low hysteresis losses. In addition, ferrite materials are also widely used, especially suitable for high-frequency transformers because they have low eddy current losses and good high-frequency characteristics.

Insulating Materials: Good insulation is required between the high and low voltage sides of underground transformers to prevent leakage and arc faults. Therefore, the choice of insulation material is crucial. Common insulating materials include insulating oil, insulating paper, insulating resin, etc. They have good electrical insulation properties and heat resistance, can effectively protect coils and windings, and ensure the stability and safety of power output.

Heat dissipation design: Since underground transformers are often located in closed underground spaces, heat dissipation is an important design consideration. Good heat dissipation design can effectively remove the heat generated inside the transformer and prevent excessive temperature from adversely affecting the performance and life of the equipment. In order to achieve good heat dissipation, heat sinks are usually installed in the transformer, a cooling oil circulation system is used, or fans and other heat dissipation devices are installed to improve heat conduction and discharge efficiency.

Through the above design considerations and practices, underground transformers can play an important role in urban power distribution systems, providing stable and reliable power supply to urban residents and enterprises. With the continuous development and innovation of technology, it is believed that the structural design of underground transformers will be continuously optimized to further improve its energy efficiency and stability to meet the needs of future urban power systems.

S13-M.D Type Underground Transformer
Product Overview: Underground transformer: a distribution transformer or combined transformer that can be installed in a pit. It is generally installed in the pit, does not occupy the effective space on the surface, does not affect the visual effect, makes the power supply equipment and the surrounding environment harmonious and unified, and can avoid inadvertent or intentional damage by the outside world, and the impact on the surrounding environment and personnel of the equipment can also be reduced to a minimum.