The photovoltaic transformer plays a crucial role in the protection of photovoltaic systems connected to the distribution line. Its insertion becomes essential to prevent harmful disturbances generated by DC components from affecting the AC line.
IMPORTANCE OF THE PHOTOVOLTAIC TRANSFORMER IN SOLAR SYSTEMS
Photovoltaic systems convert solar energy into electrical energy but, during this process, voltage fluctuations, harmonics and other electrical problems can occur that affect both inverters and the distribution grid.
In situations such as a short circuit on a single photovoltaic cell or a fault in the inverter, the absence of an isolation transformer could cause these problems to propagate to the AC distribution line, generating potential faults to loads or other connected generation sources.
THE ROLE OF ISOLATING TRANSFORMERS IN PHOTOVOLTAIC SYSTEMS
The main function of isolating transformers in photovoltaic systems is to prevent any electrical faults generated in the photovoltaic system from affecting the distribution grid.
What problems does an isolation transformer solve in a photovoltaic system?
- Protection against electrical faults: a short circuit in a solar panel or a fault in the inverter can cause disturbances in the grid. The isolating transformers prevent these problems from spreading.
- Filtering of harmonics and electromagnetic interference: minimises interference generated by inverters.
- Electrical safety: protects both equipment and operators.
- Yield optimisation: ensures efficient energy conversion and avoids unnecessary losses.
CASE STUDY: THE ORTEA SOLUTION FOR A LARGE-SCALE PHOTOVOLTAIC SYSTEM
To ensure high system reliability and safety, a customer with a large-scale photovoltaic installation contacted Ortea to develop a solution specific to its needs.
After a detailed analysis of the installation, a 250kVA K4 isolation transformer was implemented, designed inside an IP54-rated cabinet, ideal for outdoor installation and resistant to adverse weather conditions.
Thanks to this customised solution, power quality problems in the photovoltaic system are avoided, ensuring stable and reliable energy production.
ADVANTAGES OF THE ORTEA PHOTOVOLTAIC TRANSFORMER
- High energy efficiency: minimises losses and optimises energy conversion.
- Robust design: IP54 protection against moisture, dust and extreme weather conditions.
- Customised solutions: adapted to the specific needs of each customer.
- Regulatory compliance: designed according to international electrical safety standards.
The isolation transformer in photovoltaics is an essential part of any solar power generation system, as it ensures the stability and safety of the installation.
With its expertise in advanced power quality solutions, Ortea offers transformers designed to maximise the efficiency and reliability of any photovoltaic system.
