Modal Analysis of Small-Signal Angular Stability of a Power System Affected by Grid-Connected DFIG
This chapter introduces modal analysis of small-signal angular stability of a power system affected by a grid-connected DFIG. First, a method of decomposed modal analysis is proposed. The method can separately examine the impact of load flow change and dynamic interactions brought about by the grid-connected DFIG. Second, the impact of dynamic interactions introduced by the grid-connected DFIG on power system small-signal angular stability is examined comprehensively. Two indices to estimate the impact are introduced.
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