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Integration of Nonlinear Differential Systems with Wide Eigenvalue Range

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2 Author(s)
Richard Oswald ; IBM Corporation ; Otto J. M. Smith

A new method of integrating the nonlinear differential systems with wide eigenvalue range encountered in power system transient studies is developed. A state transition matrix is employed and a very efficient procedure for its calculation is included. For typical problems this integration method has permitted step sizes a factor of 100 larger than conventional numerical integration algorithms without loss of accuracy or significant increase in computing time per step.

Published in:

IEEE Transactions on Power Apparatus and Systems  (Volume:PAS-90 ,  Issue: 6 )