Solar power generation transformer solution
Writer： Hengfeng you electric Time：2025-04-19 views：times
Solar power generation transformer solution: the core guarantee for efficient boosting and stable grid connection
Against the backdrop of accelerated transformation of the global energy structure, Solar power generation has become an important path to achieve the "dual carbon" goal. However, the efficient operation of Solar systems relies on the support of key equipment - Solar power generation transformers. As the "energy hub" connecting Solar arrays with the power grid, Solar step-up transformers undertake the core functions of boosting electrical energy, stable transmission, and safe isolation. Hengfengyou Electric will deeply analyze the technical advantages and application scenarios of Solar power generation dedicated transformers, helping enterprises optimize power station efficiency and improve investment return.
I、 Why do Solar power generation systems require specialized transformers?
The electrical energy output by Solar power generation systems through inverters is usually low voltage (such as 400V or 690V), while grid connection requires voltage to be raised to 10kV, 11kV, 20kV, 33kV, 35kV or even higher. Ordinary transformers are difficult to cope with the strong fluctuations, high harmonic content, and large day night load differences in Solar power generation, which can easily lead to decreased efficiency and increased equipment losses. The Solar step-up transformer produced by Hengfengyou is specially designed for new energy scenarios and has the following characteristics:
1. Wide voltage adaptation: Supports 0.4kV/0.8kV/1.14kV input, flexibly matching centralized and string inverter outputs.
2. Strong anti harmonic ability: adopting a special winding structure and magnetic circuit design to suppress high-frequency harmonics and reduce iron and copper losses.
3. Excellent overload performance: adaptable to sudden changes in morning and evening irradiation, able to withstand short-term 150% overload impact, ensuring stable operation around the clock
4. The design lifespan is ≥ 25 years, and the actual lifespan is affected by load rate, environment, and maintenance.
II、 How to choose a Solar step-up transformer
Scientific selection is the key to ensuring the efficiency and economy of Solar systems:
1. Capacity matching
Calculate the capacity based on the maximum output power of the Solar array (such as a 200MW power station requiring a 220kV booster station), and reserve 10% -20% expansion space.
2. Voltage level selection
Low voltage is preferred for long-distance transmission (such as 1140V or 800V), and distributed projects are compatible with 400V/380V.
3. Environmental adaptability design
Choose anti-corrosion shells in coastal areas, strengthen heat dissipation systems in high-altitude regions, and add dust-proof designs in windy and sandy areas.
4. Economic evaluation
Comparing the initial cost with the full lifecycle benefits, although the DC coupling scheme has a higher initial investment, it can reduce the LCOE by more than 15% in the long run.
III、 How to choose a reliable supplier of Solar transformers?
1. Technical certification: Priority should be given to products that have the qualification to connect to the State Grid and comply with standards such as GB/T 17467, IEC 60076, ANSI/IEEE, EN, NF, etc
2. Energy efficiency level: Confirm that the no-load loss and load loss values of the transformer meet the requirements of the local national power grid
3. Hengfengyou Electric is such a company that can fully satisfy customers.
IV、 The core advantages of Solar transformer solutions
1. Efficient and energy-saving, improving power station revenue
Adopting double split winding dry-type transformers or amorphous alloy oil immersed transformers, the no-load loss is reduced by 30% -50%, and the conversion efficiency is ≥ 98%. Paired with intelligent reactive power compensation devices, it effectively reduces line losses and helps increase the average annual power generation of the power station by 3% -5%.
2. Intelligent monitoring, predicting fault risks
Integrated IoT sensing module, real-time monitoring of key parameters such as transformer temperature, vibration, insulation status, etc., and remote diagnosis and warning through cloud platform. Built in arc fault protection (AFCI) function, automatically cuts off abnormal circuits, reducing the risk of fire.
3. Strong environmental adaptability
The box adopts IP54 protection grade and C4 anti-corrosion coating, which can resist -40 ℃ low temperature, 50 ℃ high temperature, salt fog, sand dust and other harsh environments. It is suitable for desert power stations, coastal mudflat, high-altitude mountains and other complex scenes, with a service life of up to 25 years.
4. Modular design, flexible expansion
Supporting a power range of 500kVA to 5000kVA, using standardized interfaces and pre installed structures, it can quickly expand in parallel to meet the phased construction needs of distributed power stations. Reserve energy storage system interfaces to adapt to future integrated upgrades of light storage.
