220kV transformer belongs to high-voltage oil-immersed transformer and adopts core-type structure. According to the number of phases, it can be divided into single-phase transformers and three-phase transformers; according to the voltage regulation method, it can be divided into on-load voltage regulation and no-excitation voltage regulation; according to the winding coupling method, it can be divided into power transformers and autotransformers; according to the number of windings, it can be divided into double-winding, three-winding, and three-winding + balancing winding. At the same time, it includes special types of 220kV transformers such as split transformers and combined transformers. The products are designed in accordance with IEC international standards, IEEE standards and current national standards.
Main Features
1. Low noise, reducing noise pollution to the environment;
2. Low partial discharge, ensuring stable and reliable operation of the transformer;
3. Low temperature rise, strong overload capacity;
4. Low losses, optimizing energy structure;
5. No oil leakage, high transformer sealing performance;
6. Maintenance-free, reducing customer maintenance costs;
7. High impedance, high short-circuit resistance, improving the safety performance of the transformer;
8. Adopting intelligent components and intelligent power station design technology;
