Estimation of the Distributed Generation Impacts on the Angle Stability of the Two-Machine Scheme

The paper discusses the results of the case studies devoted to the impact of distributed generators connected to a distribution network on the transient stability of transmission network, with the critical fault clearing time applied as an performance index. The case studies are based on the two- machine scheme, employing also a model of the Baltic power system. The authors analyse a wide technological range of the distributed generators and a variety of the modelled operating conditions. The transient stability is estimated using EUROSTAG software for simulation of power systems.