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Subband decomposition oriented multirate electrical power network digital simulation

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3 Author(s)
Szczupak, J. ; ENGENHO, Pontificia Univ. Catolica do Rio de Janeiro, Brazil ; Faceroli, S.T. ; da Silva, K.G.C.

A new approach to linear electric network simulation/analysis is introduced. The processing structure operates as a multirate digital filter, decomposing signals and network into frequency subbands, naturally leading to parallelism. Although general, the method is here applied to electric power networks as a generalization of the EMTP approach. As a result of the decomposition procedure, each subband integration time step is always maximized, reducing computational burden. The computational load is further reduced by on-line controlling subnetworks that could be momentarily disconnected with negligible loss of accuracy in the final result. This adaptive feature further improves the simulator efficiency, adjusting the network model complexity, according to the simulation requirements. Illustrative case is included.

Published in:

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on  (Volume:3 )

Date of Conference:

25-28 May 2003