Fengkai Hu, K. Sun, A. del Rosso, E. Farantatos, N. Bhatt
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An adaptive three-bus power system equivalent for estimating voltage stability margin from synchronized phasor measurements
This paper utilizes an adaptive three-bus power system equivalent for measurement-based voltage stability analysis. With that equivalent identified online, a measurement-based approach is developed to estimate real-time voltage stability margin for a load-rich area supported by remote generation via multiple tie lines. Compared with traditional Thevenin equivalent based approach, this new approach is able to provide more accurate voltage stability margin for each individual tie line. This approach is validated on a three-bus system and the IEEE 39-bus system.
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