What are the energy-saving technologies of dry-type transformers?

A dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil. It avoids the problems of fire, explosion and pollution that may be caused by oil-immersed transformers. Dry-type transformers have the advantages of compact structure, easy maintenance, reliable operation and environmental protection. Therefore, they have been widely used in urban power grids, industrial enterprises and high-rise buildings. So as an indispensable equipment in the power system, the energy efficiency and energy-saving performance of dry-type transformers have an important impact on the operating efficiency and energy utilization of the entire system. Let's learn about the energy-saving technologies of dry-type transformers.

The energy-saving technologies of dry-type transformers

1. Choose a high-efficiency dry-type transformer: A high-efficiency dry-type transformer can minimize load losses, thereby achieving energy conservation and consumption reduction. Compared with traditional transformers, the loss reduction of high-efficiency transformers can reach more than 30%. And it can also make the transformer lighter and more compact which can save space, and reduce operating costs.

2. Choose a suitable operating mode: The operating mode of a dry-type transformer directly affects its energy efficiency. Use an efficient operating mode when operating at high loads, and use flexible modes such as sleep mode or light load mode when operating at low loads to save energy. Intelligent control systems can achieve more precise control and further improve energy efficiency.

3. ‌Reasonable design of connection method of transformer‌: Reasonable transformer connection method can effectively improve the energy utilization rate of dry-type transformers and achieve the purpose of energy saving. For example, the star connection method is more energy-efficient than the triangle connection method. By changing the phase sequence of the transformer, the service life of the winding can be extended and the operating efficiency of the transformer can be increased.‌ 

4. ‌Adopting new materials‌: In the manufacturing of transformers, the use of new materials such as oxygen-free copper materials and amorphous alloy materials can significantly reduce the energy consumption of transformers. Oxygen-free copper materials can reduce the internal resistance of the coil and improve the short-circuit resistance of the transformer; amorphous alloy materials are ideal for making distribution transformer magnets due to their low electromagnetic loss characteristics.

5. Regular maintenance: Regular maintenance can effectively improve the life and efficiency of dry-type transformers, thereby further improving their energy saving. Maintenance includes cleaning the radiator, checking the insulation status, checking the cooling water quality, checking the joint status, etc.

6. Install an automatic voltage regulator: The automatic voltage regulator monitors the changes in input voltage in real time and adjusts the transformation ratio to maintain a stable output voltage, which can  optimize the operating voltage of the distribution network and reduce the loss of the transformer.

By comprehensively applying these technologies, the energy efficiency of dry-type transformers can be significantly improved, energy consumption and emissions can be reduced, and the sustainable development of the power industry can be contributed to. In the future, with the advancement of science and technology and the improvement of environmental awareness, the energy-saving technology of dry-type transformers will continue to be innovated and developed, providing more efficient and environmentally friendly solutions for the power industry.