Transient Stability Analysis of DFIGS Using Eigenvalues Analysis.

Document Type : Research Studies

Authors

1 a master's degree program in Electric Engineering Dept., Faculty of engineering, Mansoura Univ., Egypt

2 associated professor in Electric Engineering Dept., Faculty of engineering, Mansoura Univ., Egypt

3 professor in Electric Engineering Dept., Faculty of engineering, Mansoura Univ., Egypt

Abstract

The increasing penetration of the wind power generation into the electrical power system has led to increasing the unconventional generators into the system. The Doubly Fed Induction Generators (DFIGs) is the most common type utilized for the wind power generation. In this article, the impact of the DFIGs integration on the power system transient stability is analyzed and evaluated by using the index of the critical clearing time (CCT) and eigenvalue analysis. Moreover, the new Center of Inertia (COI) technique is used to study the effect of the integrated DFIGs on the power system transient behavior. The simulation studies are performed to compare the system transient performance with/without DFIGs integration during and after a severe grid fault. Also, they are executed to compare the transient behavior of the power system with/without replacing the synchronous generators with DFIGs. The results show a significant improvement in the transient behavior is achieved by replacing some of the synchronous generators with DFIGs of the same capacity

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