Power transformer working regime analysis in photovoltaic power stations

Renewable energy usage has increased in past years. Since the amount of energy generated from renewable sources has increased it raised new challenges to energy system Renewable energy power generation is more complicated to control and it can have a technical impact in main grid components such as power transformers. All electrical energy system is most effective when used in constant working mode. Renewable energy resources are hard to predict and also their energy generation is very unstable. Lifetime of the power transformers used in alternating regime is lower than the ones used in stable load. Renewable energy is new solution in electrical energy systems and their impact to grid and it elements need to be studied and decreased.