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Multimachine power systems: Stability, decomposition, and aggregation

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3 Author(s)
Jocic, L. ; University of Santa Clara, Santa Clara, CA, USA ; Ribbens-Pavella, M. ; Siljak, D.D.

A new approach is proposed for transient stability analysis of interconnected power systems, which is based upon the concept of vector Lyapunov functions and the decomposition-aggregation method. The approach results in an exact procedure for computation of stability region estimates which are expressed explicitly in terms of system parameters. More refined models of the subsystems can be readily accommodated by the new approach. In particular, the transfer conductances are included in the present study, a feature which is almost exclusively missing in transient stability analysis of multimachine systems by Lyapunov's method.

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Automatic Control, IEEE Transactions on  (Volume:23 ,  Issue: 2 )