Solar Power Plant (SPP) transformers are used in solar power plants to convert DC (direct current) electricity into AC (alternating current) electricity. These transformers are designed to match the output voltages of the inverters they are connected to and usually require higher voltage levels (e.g. 800V) than 400V. The basic functions of solar power plant transformers are:

 

1. Voltage Conversion: Solar power plant transformers convert the direct current (DC) electricity coming from solar panels into alternating current (AC) through the inverter and then convert it to a voltage level suitable for the transmission line.

 

2. Power Boost: Transformers are used to boost the electricity produced by solar power plants to a level that can be transmitted to the grid. This increases efficiency and makes it possible to transport energy over longer distances.

 

3. Providing Isolation: Transformers provide safe isolation between different voltage levels of the system, which creates protection for equipment and users in the event of a fault.

 

4. Frequency Conversion: Solar power plants often play a role in political frequency conversion to match the grid frequency. This makes it easier to integrate solar energy into the grid.

 

5. Harmonic Filtration: Solar power plant transformers can, in some cases, be designed to reduce harmonic distortions in the system, which improves energy quality.

 

These functions help solar power plants operate effectively and integrate the generated energy into the grid safely and efficiently.