Equivalent circuits for photovoltaic power plants used for the calculations in power networks

Zadatak rada bio je prikazati nadomjesne sheme fotonaponskih sustava. Poseban naglasak stavljen je na najkorištenije fotonaponske modele, a to su model sa jednom diodom i sa dvjema diodama. Kroz teoretska znanja i pomoću računalne simulacije u programu EasyPower provesti proračun jednog fotonaponskog sustava. Prikazan je graf dnevne proizvodnje energije koji pokazuje da fotonaponski modul daje najviše energije kada sunce najjače sja. Također, prikazan je i graf dnevne potrošnje kućanstava.The goal of the paper was to present the equivalent circuits of photovoltaics. Special emphasis is placed on the most used photovoltaic models, which are a model with a single diode and model with two diodes. Accormplish a problem of photovoltaic system by using theoretical knowledge and computer simulation in program EasyPower. A graph of daily production is shown and it presents that the photovoltaic module provides the most energy when the sun shines the strongest. Also, the graph of daily household consumption is presented