Transient Stability Assessment of IEEE 9-Bus System Integrated Wind Farm

This research aims to evaluate the effect of wind energy on transient stability of power system considering the high penetration of wind farm at several locations. Hence, the results will help power system operators and developers to increase the contribution of renewable energy and enable the reliability of the grid.

The use of wind energy technologies, to produce electricity, is increased due to the high demand for sustainable energy. The penetration of wind energy in electrical networks might have several effects on load flow, power quality, and power system stability. Transient stability is defined as the capacity of a power system to stay synchronism after large disturbance, such as fault on a transmission line. In this research paper, the transient stability of the 9-Bus system integrated with Doubly Fed Induction Generator (DFIG) is analyzed. Additionally, different penetration levels of a wind farm are considered. With a 5% penetration of wind energy, the maximum power angle of the synchronous generator is around 130ͦ, which is quite similar to the existing system. In contrast, the power angle increases to 140ͦ after adding more wind turbines with 15% wind farm penetration. Then, the system loses stability with a 25% penetration of wind energy. The results indicate that the high penetration of wind energy has a destabilizing impact on the studied network; this effect depends on the rate of penetration. Moreover, the location of the wind farm affects transient stability, and Bus4 and Bus5 are suitable locations to install a wind farm in terms of transient stability. This research intends to contribute towards assessing the stability of the power system integrated DFIG. Hence, this study will support the increase of using wind energy in power systems rather than conventional power plants and evaluate the stability to enable the reliability of alternative energy sources in the grid.

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