Multi-Machine Transient Stability Study of an IEEE Bus 39 Test Case with Hybrid Distributed Generation using Matlab

Abstract

Integrating a large amount of hybrid Distributed Generation units has a substantial effect on the transient stability of IEEE 39-Bus System Base Model. With the increasing number of Distributed Generation (DG) sources connected to the power grid, the impact on the power system's stability is definitely higher compared to the previous decades. From the previous studies, small amount of DG connected to the grid has a negligible impact but a large amount of different DG connected to the same reference grid has a positive and negative impact on the transient stability when a fault occurred on a system. Using IEEE 39-Bus System Base Model with a Hybrid DG such as solar, wind, synchronous generators and energy storage system, the following important results were determined: The overall Transient Stability improves due to the increases in the number of stable conditions in comparison to the IEEE 39 Bus Model System without DG - Base Case; and, the removal of ESS in the Hybrid DG connection decreases the overall system stability. The integration of Hybrid DGs to the system resulted to the decrease in the reduction of Electrical Power Output of the 10 Generators during fault application.