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A contingency filtering, ranking and assessment technique for on-line transient stability studies

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6 Author(s)
Ruiz-Vega, D. ; Dept. of Electr. Eng., Liege Univ., Belgium ; Ernst, D. ; Ferreira, C.M. ; Pavella, M.
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A two-block technique is proposed for on-line contingency screening, ranking and assessment in transient stability studies. Its design relies on a hybrid direct-time-domain method called SIME. Basically, SIME assesses stability by transforming the multi-machine power system parameters into those of a one-machine infinite bus system, then by calling upon the equal-area criterion. Stability margins thus obtained are used to classify contingencies, select the “interesting” ones and, finally, rank and assess these latter. An 88-machine EPRI test system illustrates the technique and shows its ability to correctly handle the simulated contingencies, while complying with real-time computational requirements

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Electric Utility Deregulation and Restructuring and Power Technologies, 2000. Proceedings. DRPT 2000. International Conference on

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