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This paper describes a procedure to generate an adaptive Dimo equivalent. Fictitious nodes aggregate buses belonging to the same class of REI equivalence. As a result, an equivalent that preserves the physical characteristics of the power system is obtained. The reduced model is updated by using a realtime calibrating procedure. The resulting adaptive Dimo equivalent is suitable for subsequent use to reliably perform the security analysis function in a multi-area power system environment. Shunts are found to be of fundamental importance, and their treatment in network analysis algorithms is assessed. Numerical results are also discussed in this paper.
Date of Publication: May 1981