Impact of the renewable energy sources on long-term dynamic in the Slovak power system

Abstract

This paper discuss about long-term dynamics simplified model of the power system. This model represents Slovak power system connected trough inter-tie line to interconnected power system – ENTSO-E. The Slovak power system itself is represented by node SEPS. To this node conventional and renewable energy sources are connected. The significant growth of installed power capacity of renewable energy sources (RES) in the last few years may cause incidental disturbance of power balance in the power system. This problem is typical for photovoltaic power stations. It is very hard to predict photovoltaic (PV) power production especially during cloudy weather conditions. Because of this fact it is very important to determine maximum share of RES in each power system. This paper deals with impact of PV in power system.