Dynamic Security Assessment

Vijay Vittal Arizona State University 15.1 Definitions and Historical Perspective ........................ 15-1 15.2 Criteria for Security ...................................................... 15-2 15.3 Assessment and Control ............................................... 15-3 15.4 Dynamic Phenomena of Interest ................................. 15-3 15.5 Timescales ...................................................................... 15-3 15.6 Transient Stability.......................................................... 15-4 15.7 Modeling ........................................................................ 15-4 15.8 Criteria and Methods.................................................... 15-5 Numerical Integration . Direct=Lyapunov Methods . Probabilistic Methods . Expert System Methods . Database or Pattern Recognition Methods 15.9 Recent Activity............................................................... 15-6 15.10 Off-Line DSA................................................................. 15-7 15.11 On-Line DSA ................................................................. 15-8 15.12 Status and Summary ..................................................... 15-8

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