Power Knowledge | Unveiling the Design and Application of Transformers

I. Basic Principles and Classification of Transformers

II. Transformer Design and Parameter Selection

1. Voltage Level: The voltage level must match the grid requirements to avoid affecting power quality and stability.
2. Power Capacity: Determined based on current load demand and expansion plans, while considering the transformer's heat dissipation and overload capabilities.
3. Short-Circuit Impedance: A key indicator of load capacity, determined according to the grid's short-circuit current and voltage level.
4. Efficiency and Losses: Calculated based on power, voltage level, and load rate to ensure high-efficiency power conversion and minimize energy loss.
5. Cooling Methods: Common methods include natural cooling, forced air cooling, and water cooling, essential for dissipating heat to maintain operational stability and lifespan.
6. Insulation Class and Materials: Selected based on voltage level, environmental conditions, and requirements, directly impacting service life and safety.
7. Reliability and Maintainability: High reliability and maintainability are required to ensure long-term stable operation.

III. Transformer Application Technologies

1. Substation Design: As a key component of the power system, substations require rational configuration and parameter selection of transformers based on power demand and load characteristics to ensure stable operation and quality control.
2. Power Quality Control: Transformers regulate and stabilize voltage and current, playing a vital role in optimizing power quality through appropriate type selection and control methods.
3. Smart Grid Applications: With the development of smart grids, intelligent transformers and control systems enable real-time monitoring, control, and management of the power system, enhancing safety and stability.

IV. Conclusion