Studying Cascading Overload Failures under High Penetration of Wind Generation

摘要

While power systems are reliable infrastructures, their complexinterconnectivities allow for propagation of disturbances through cascadingfailures which causes blackouts. Meanwhile the ever increasing penetrationlevel of renewable generation into power grids introduces a massive amount ofuncertainty to the grid that might have a severe impact on grid vulnerabilityto overload cascading failures. There are numerous studies in the literaturethat focus on modeling cascading failures with different approaches. However,there is a need for studies that simulate cascading failure considering theuncertainty coming from high penetration of renewable generation. In thisstudy, the impacts of wind generation in terms of its penetration anduncertainty levels on grid vulnerability to cascading overload failures arestudied. The simulation results on IEEE 300 bus system show that uncertaintycoming from wind energy have severe impact on grid vulnerability to cascadingoverload failures. Results also suggest that higher penetration levels of windenergy if not managed appropriately will add to this severity due to injectionof higher uncertainties into the grid.