Criteria for the equivalent modeling of large photovoltaic power plants

The aim of the present article is to propose an innovative simplified approach for the evaluation of active and reactive power losses for large photovoltaic plants. This methodology can be then employed in the design phase of large photovoltaic plants in order to have a preliminary evaluation of the system efficiency and of the capability of reactive power exchange with the electricity system operators (TSOs and DSOs). This necessity is strictly related to the increasing number of TSOs and DSOs that require photovoltaic plants to provide ancillary services, such as the supply of reactive power and the participation in voltage regulation.