Influence of Distributed Power Generators on Transmission System Transient Stability

Distributed power generator (DPG) technology refers to local generation and supply of increased power requirement at a load centre by employing feasible energy resources and renewables available. The concept of DPG and its development is to overcome specific issues related to regulatory, environmental, and commercial factors. Many research highlighted significant technical benefits of DPG technology. However, the influence of a higher degree of DPG penetration on transmission system stability is a significant topic that needs further analysis. This study focuses on the DPG influence analysis on transmission system transient stability. The contribution of each DPG source on the transient stability is determined through a variance analysis (VA) test performed on time-response indicators of main synchronous generators. VA test analysis reveals that the contribution of diesel turbine power generator (DTPG) is significant in the transient response performance of transmission system.