Innovative Applications and Technical Challenges of Dry-Type Transformers in the New Energy Field

Meta Description: Explore the cutting-edge applications of dry-type transformers in photovoltaic power generation, wind power generation, energy storage systems, and other new energy fields. Analyze the technical challenges and solutions, providing equipment selection and maintenance references for new energy projects.

With the global energy transition accelerating, dry-type transformers are becoming critical equipment in the new energy field due to their high safety, environmental friendliness, and intelligent features. This article delves into the technological innovations, special requirements, and future development trends of dry-type transformers in new energy applications.

1. Special Requirements for Transformers in the New Energy Field

1. High Volatility Load Adaptation Capability
   • Power output from PV/wind farms fluctuates drastically with weather conditions.
   • Transformers must withstand frequent overloads and impact loads.
2. Tolerance to Harsh Environments
   • High salt spray corrosion in coastal areas.
   • High-temperature and dusty conditions in desert regions.
   • Low-pressure operating conditions at high altitudes.
3. Bidirectional Power Flow Support
   • Energy storage systems require transformers to support bidirectional charge/discharge operations.
   • Special winding design and magnetic circuit structures are needed.

2. Innovative Technology Applications

1. Intelligent Temperature Control System
   • AI algorithms predict load changes and adjust cooling strategies in advance.
   • Integrated PWM speed-regulated fans enable precise temperature control.
2. New Insulation Materials
   • Nano-modified epoxy resin enhances weather resistance and mechanical strength.
   • Ceramifiable silicone rubber provides high-temperature self-protection.
3. Special Structural Designs
   • Salt spray resistance: 316L stainless steel fasteners + triple protective coating.
   • Dust prevention: IP54 protection rating + self-cleaning air ducts.
   • Seismic resistance: Reinforced base + flexible connections.

3. Analysis of Typical Application Scenarios

1. Photovoltaic Power Stations
   • Suitable Model: SCB15 Series
   • Technical Features:
     ✅ Allows 20% daily average overload.
     ✅ Supports reverse power operation.
     ✅ Operates in a wide temperature range of -40℃ to +50℃.
2. Wind Farms
   • Suitable Model: SCB16 Series
   • Technical Features:
     ✅ Anti-vibration design (withstands 0.5g acceleration).
     ✅ Salt spray resistance rating C5-M.
     ✅ Integrated harmonic suppression windings.
3. Energy Storage Power Stations
   • Suitable Model: SCB18 Bidirectional Converter Transformer
   • Technical Features:
     ✅ Bidirectional power transmission efficiency > 99%.
     ✅ Supports 1,000 charge/discharge cycles per day.
     ✅ Millisecond-level power response.

4. Technical Challenges and Solutions

1. Harmonic Management Challenges
   • Challenge: New energy grid integration generates significant harmonics.
   • Solutions:
     ▶ Triple-shielded winding structure.
     ▶ Built-in active filter interface.
2. Thermal Management Bottlenecks
   • Challenge: Frequent overloads cause heat accumulation.
   • Solutions:
     ▶ Phase-change material cooling technology.
     ▶ Hybrid liquid-air cooling system.
3. Increased Reliability Requirements
   • Challenge: Unmanned power stations require 20 years of maintenance-free operation.
   • Solutions:
     ▶ Redundant design of critical components.
     ▶ Online monitoring and early warning systems.

5. Selection Recommendations and Maintenance Points

1. Basic Selection Principles
   • PV Projects: Prioritize overload capacity and temperature range.
   • Wind Power Projects: Focus on seismic and corrosion resistance.
   • Energy Storage Projects: Emphasize bidirectional operation efficiency and cycle life.
2. Special Maintenance Requirements
   • Coastal Power Stations: Clean salt spray deposits monthly.
   • Desert Power Stations: Inspect air filters weekly.
   • High-Altitude Power Stations: Calibrate temperature rise curves quarterly.
3. Intelligent Maintenance Systems
   • Recommended Configurations:
     ✅ Cloud-based condition monitoring platform.
     ✅ Fault prediction and health management (PHM) system.
     ✅ AR remote maintenance guidance system.

6. Future Development Trends

1. Technological Innovation Directions
   • High-temperature superconducting dry-type transformers.
   • Smart transformers with integrated power electronics.
   • Carbon-neutral transformers (50% reduced carbon footprint).
2. Improvement of Standard Systems
   • Development of standards for new energy-specific transformers.
   • Establishment of rapid testing and certification systems.
3. Business Model Innovations
   • Transformer as a Service (TaaS) model.
   • Blockchain-based shared maintenance platforms.

Conclusion

The application of dry-type transformers in the new energy field is driving technological innovation and industrial upgrading. To meet the special requirements of new energy power generation, transformer manufacturers need to innovate in materials, structures, control systems, and other dimensions. Meanwhile, users must develop scientific selection and maintenance strategies based on specific application scenarios. With continuous technological breakthroughs, dry-type transformers will play an increasingly important role in the energy transition.