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Dry-Type Transformers: Key Equipment for New Energy Power Systems
Classification:
Industry News
Release time:
2025-12-19
Against the backdrop of the global energy structure transitioning towards green and low-carbon alternatives, new energy industries such as wind power, solar power, and energy storage systems continue to develop. This trend places new demands on power transmission and distribution equipment. Dry-type transformers, leveraging their specific technical characteristics, have become a suitable choice for various application scenarios within the new energy sector.
Requirements of New Energy Applications for Transformers and Characteristics of Dry-Type Transformers
New energy power generation output is intermittent and fluctuating, with project sites often located in areas with specific environmental conditions. Consequently, supporting power equipment typically needs to consider:
Operational Adaptability: Ability to withstand frequent load variations.
Environmental Endurance: Possess a degree of protection against humidity, salt spray, windblown dust, and temperature fluctuations.
Safety and Maintenance: Meet necessary fire safety requirements, with a preference for equipment requiring less maintenance.
Dry-type transformers, manufactured using epoxy resin casting or Vacuum Pressure Impregnation (VPI) processes, feature characteristics such as being oil-free, flame-retardant, having a mechanically robust structure, and offering good moisture resistance. These attributes enable them to adapt to some of the aforementioned specific conditions.
Key Technical Characteristics
Energy Efficiency Performance
Improving energy efficiency is a common goal for power equipment. Dry-type transformers achieve lower operational losses through the following means:
Core Material: Use of low-loss cold-rolled silicon steel or amorphous alloy materials helps reduce no-load losses.
Winding Design: Use of copper windings and reasonable structural design to minimize load losses.
Heat Dissipation Management: Equipped with temperature control and forced air cooling systems to help maintain operating temperature, which is beneficial for preserving efficiency and insulation lifespan.
Safety and Environmental Adaptability
Fire Performance: Use of flame-retardant insulating materials lowers fire risk, making them suitable for installation locations with fire safety requirements.
Protection Capability: Epoxy resin encapsulation and housing design can achieve a high Ingress Protection (IP) rating (e.g., IP23), providing defense against dust and moisture ingress.
Maintenance Features: No need for insulating oil handling simplifies routine maintenance.
Primary Application Scenarios in the New Energy Sector
Photovoltaic (PV) Power Generation Systems:
Dry-type transformers are often used on the inverter output side in centralized or distributed PV power plants for voltage step-up. Their compact, oil-free design makes them suitable for installation in containerized substations or inverter rooms, avoiding potential impacts from oil leaks.
Wind Power Generation Systems:
Dry-type transformers can be installed inside wind turbine towers or nacelles. Their robust mechanical structure, vibration resistance, and oil-free, low-maintenance nature allow them to adapt to the spatial constraints and operating environment within towers.
Energy Storage Systems (ESS):
Dry-type transformers are used in electrochemical energy storage power stations to connect the energy storage converter (PCS) to the medium-voltage distribution grid. Their reliability and ability to coordinate with control systems support the charge/discharge scheduling of ESS. Their flame-retardant properties align with safety regulations for energy storage facilities.
Electric Vehicle (EV) Charging Infrastructure:
Dry-type transformers provide power transformation for DC fast-charging stations, converting grid voltage to the required level. Their relatively small size and lower noise levels facilitate deployment in urban environments.
Technology Development Trends
Currently, dry-type transformers are gradually integrating online monitoring functions, such as temperature and partial discharge monitoring, to support condition assessment and predictive maintenance, meeting the needs of intelligent power plant management.
Conclusion
Dry-type transformers have found widespread application in new energy power generation, energy storage, and charging infrastructure due to their oil-free, flame-retardant, relatively low-maintenance, and environmentally adaptive qualities. They represent a reliable option among the many components constituting modern power systems.
AISITE supplies a range of dry-type transformer products for global new energy projects and can provide technical specifications and solution details based on your specific project requirements. Ready to enhance your project's efficiency and safety? Our engineering team is here to provide tailored solutions for you.
📧 Email: [sale@aisite-ast.com]
📞 Phone/Whatsapp/Wechat: [+86 15896663407]
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