Solar farm power supply: dry-type transformer
Time：2025-03-21 Auther：ZTelec-www.ztelectransformer.com
Solar energy, as an inexhaustible clean energy, is increasingly becoming a key direction for global energy transformation. As an effective way to utilize solar energy on a large scale, the construction and operation of solar farms are of great significance to reducing dependence on traditional fossil energy and reducing carbon emissions. In the power system of solar power plants, dry-type transformers are one of the indispensable core equipment.
Application of dry-type transformers in solar power plants
1.Voltage conversion
The electricity generated by solar panels is generally low-voltage direct current, but the power grid requires high-voltage alternating current. In solar power plants, dry-type transformers first convert direct current into alternating current with the help of inverters, and then increase the voltage to a level suitable for access to the power grid. For example, the voltage can be increased from hundreds of volts to thousands of volts or even higher, so as to achieve long-distance transmission and efficient distribution of electric energy.
2.Power transmission and distribution
Inside the solar power plant, the dry-type transformer transmits the boosted electric energy to the collector, then collects it at the substation, and finally connects it to the power grid. At the same time, according to actual needs, the electric energy can be distributed to various power equipment or energy storage systems to ensure the flexible operation of the solar power generation system.
3.Protection and control
Dry-type transformers are usually equipped with complete protection and control devices, which can monitor the operating status of the transformer in real time, such as temperature, current, voltage and other parameters. Once a fault or abnormal situation occurs, an alarm can be immediately issued, and corresponding protection measures such as tripping can be taken to ensure the safe and stable operation of the solar power generation system.
Advantages of dry-type transformers in solar power plants
Environmental protection：Dry-type transformers do not use insulating oil, so there is no oil leakage and fire hazards, which is very beneficial to environmental protection.
Safety：Dry-type transformers use flame-retardant materials, have good fire resistance, and are safer and more reliable.
Efficiency:Dry-type transformers use advanced manufacturing processes and materials to achieve high efficiency and low loss.
Easy maintenance:Dry-type transformers have a relatively simple structure, convenient maintenance, and low operating costs.
Strong adaptability:Dry-type transformers can adapt to various harsh environments such as high temperature, high humidity, and high altitude.
Precautions for selecting dry-type transformers
1.Rated power
The appropriate rated power should be selected according to the scale and power generation of the solar power plant.
2.Voltage level
Select the appropriate voltage level based on the grid voltage and the output voltage of the solar panel.
3.Protection level
Choose the appropriate protection level according to the installation environment such as IP23, IP54, etc.
4.Brand and quality
Dry-type transformers with well-known brands and reliable quality should be selected to ensure long-term stable operation.
Dry-type transformers play a vital role in solar power plants. With the characteristics of high safety, good environmental performance and convenient maintenance, they have become one of the core equipment of solar power generation systems. However, they also face challenges such as temperature effects, harmonic problems and cost pressure. In the future, with the continuous advancement of technology, dry-type transformers will develop in the direction of intelligence, efficiency and energy saving, providing more stable and efficient power support for the development of photovoltaic power plants and promoting the development of global clean energy.
