New Energy

In the new energy industry (such as wind power, photovoltaics, energy storage, charging piles, hydrogen energy, etc.), transformers are the core equipment for achieving efficient energy conversion, stable grid connection and intelligent management. The following are solutions and technical applications for different scenarios:

Ⅰ.Wind power field

Application scenarios: onshore/offshore wind farms, distributed wind power projects.

Solutions:

- Voltage boosting and grid connection:

- Use a box-type step-up transformer to boost the medium voltage output by the wind turbine to the grid voltage to reduce long-distance transmission losses.

- Offshore wind power uses corrosion-resistant transformers to adapt to high humidity and salt spray environments.

- Harmonic suppression: Integrated filter reactors to reduce the interference of harmonics generated by wind turbine inverters on the grid.

- Redundancy design: Configure N+1 redundant transformers for offshore converter stations to avoid single-point failures causing full-site shutdowns.

Technological innovation:

- Intelligent monitoring: Real-time monitoring of transformer status through optical fiber temperature measurement and vibration sensors, combined with AI to predict faults.

- Compact design: Modular transformer units reduce the installation space requirements on offshore platforms.

Ⅱ.Photovoltaic field

Application scenarios: centralized photovoltaic power stations, distributed rooftop photovoltaics, and agricultural photovoltaic complementary projects.

Solutions:

- String boost:

- Each photovoltaic inverter is equipped with a string boost transformer (such as 0.4kV/10kV) to increase the voltage to the grid-connected level.

- Desert power stations use high-temperature dry-type transformers to adapt to large temperature differences between day and night and dusty environments.

- DC side isolation: An isolation transformer is configured between the DC combiner box and the inverter to prevent DC grounding faults from affecting system safety.

Photovoltaic and energy storage synergy: The energy storage system is equipped with a bidirectional transformer to support the smooth output and peak-shaving of photovoltaic power generation.

Technological innovation:

- High penetration grid connection: Use adaptive voltage-regulating transformers to alleviate grid voltage fluctuations caused by large-scale photovoltaic access.

- Lightweight design: Amorphous alloy transformers reduce no-load losses and improve the economic efficiency of photovoltaic power stations in remote areas.

Ⅲ. Energy storage field

Application scenarios: electrochemical energy storage power station, user-side energy storage, integrated photovoltaic storage and charging projects.

Solutions:

- Energy conversion:

- Energy storage converters are equipped with high-frequency isolation transformers to achieve efficient energy interaction between DC battery packs and AC power grids.

- Large energy storage power stations use multi-winding transformers to support parallel access of multiple battery clusters.

- Safety protection:

- Configure fireproof and explosion-proof transformers to reduce the risk of fire caused by battery thermal runaway.

- Integrated leakage current monitoring function to prevent electric shock accidents caused by insulation failure.

- Black start support: Through the linkage between the transformer and the diesel generator, it provides rapid recovery capabilities after the power grid collapses.

Technological innovation:

- Solid-state transformer: replaces traditional power frequency transformers, supports wide voltage range input and bidirectional power flow, and improves response speed.

- Hybrid energy storage compatibility: adapts to the voltage characteristics of different energy storage media such as lithium batteries, flow batteries, and flywheels.

IV.Charging piles and electric vehicles

Application scenarios: public fast charging stations, community slow charging piles, battery swap stations.

Solutions:

- DC fast charging:

- Use high-frequency isolated DC-DC transformers to support high-power charging of 350kW and above, reducing charging time.

- Liquid-cooled transformer design to solve the heat dissipation problem under high power density.

- Voltage adaptation:

- Battery swap stations are equipped with multi-speed voltage regulating transformers to be compatible with battery voltages of different models.

Grid interaction:

- In the vehicle-grid interaction scenario, electric vehicles can send power to the grid in reverse through bidirectional transformers.

Technological innovation:

- Plug-and-play module: standardized transformer + charging pile integration solution to shorten the deployment cycle.

- Dynamic load balancing: intelligent transformers automatically adjust charging power to avoid local grid overload.

V.Hydrogen energy field

Application scenarios: water electrolysis for hydrogen production, hydrogen fuel cell power generation, hydrogen refueling stations.

Solutions:

- Electrolyzer power supply:

- High-power rectifier transformer to provide stable DC power supply for alkaline or PEM electrolyzers.

- Low harmonic design to reduce pollution to the power grid.

- Fuel cell grid connection:

- Equipped with an isolated step-up transformer to convert the low-voltage DC output of the fuel cell into AC grid connection.

- Hydrogen station power supply:

- Explosion-proof dry-type transformers provide safe power for compressors and cooling systems, meeting Class I Division 2 standards.

Technological innovation:

- High-temperature superconducting transformers: reduce energy consumption of hydrogen production equipment and improve efficiency.

- Green electricity direct supply: photovoltaic/wind power + transformer + electrolyzer off-grid hydrogen production system to achieve zero-carbon hydrogen energy production.

VI. General technology innovation and trends

- Intelligence:

- Digital twin technology simulates transformer operating status and optimizes operation and maintenance strategies.

- Blockchain technology records carbon footprint and supports green power traceability.

- Environmentally friendly materials:

- Bio-based insulating oil replaces mineral oil to reduce environmental pollution risks.

- Extreme environment adaptation:

- Low temperature resistant transformers are used in high altitude photovoltaic/wind power projects, and radiation resistant design is suitable for nuclear energy supporting scenarios.

- Standardization and modularization:

- Prefabricated cabin transformer solutions shorten the construction period of new energy power stations.

Summary

In the new energy industry, transformers are not only a "bridge" for power conversion, but also a key node for system safety, energy efficiency and intelligence. In the future, with the popularization of solid-state transformers, high-temperature superconducting technology, and digital twin operation and maintenance, transformers will help new energy achieve higher penetration rate grid connection, lower cost operation and more flexible energy management, and promote the accelerated transformation of the global energy structure towards low-carbon and intelligent.