Abstract
Power systems are shifting toward utilizing higher penetration of renewable energy sources (RESs) and especially wind generation because of the need to reduce carbon emissions over the next several decades. Small signal stability can be influenced with increasing penetration of wind generation in power systems. Poor damping of low frequency electromechanical oscillations are a threat to secure operation of power systems. In this paper, we investigate the sensitivity of the small signal stability of a two area test system on wind generation variability, mainly focusing on the stability of inter-area oscillation mode. Margins that determine the minimum amount of wind generation for a stable system for different tie-line power values are derived. Static load models are used and the impact of different flexibility levels from loads on the stability margins are studied. Furthermore, the impact of the proximity of flexible load to wind generation is also studied.
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