Modelling and analysis of wind and solar generation

Integration of the solar photovoltaic and wind power stations that use renewable energy keeps progressing in Lithuanian power system. Assessment of the influence of intermittent power stations with variable power output is highly significant for the operating regimes and frequency management in the energy system. In this paper, energy PRO program consists of solar photovoltaic and wind power parks in the model. Based on the data of Lithuanian Hydro meteorological Service, power generation by the power plants in farms under consideration has been estimated, and distributions of variance in power generation and their parameters as well as dependencies of correlation coefficients of power generation variation have been calculated. The inter correlation between power generations in solar photovoltaic and wind farms, and that between power generation and the load have been determined.