Impact of Solar Generation Unit on the Static Stability of Power Systems

The main goal of renewable energy is to ensure global access to inexpensive and reliable energy sources, a high level of environmental and climatic safety, as well as to improve the reliability and efficiency of power supply of consumers. However, penetration level of renewable generation also has a great impact on the stability of the system. In particular, based on the power electronic interface renewable unit impacts on the processes in system, changes its frequency spectrum and increases the potential for the appearance of new operation modes of power system. The analysis of the static stability of system with different penetration level of solar generation unit is shown in this paper. The results of studies of loading in normal and post-emergency modes of power system, calculation of static stability margin of active power and voltage, and analysis of damping properties of power system without and with renewable units are presented.