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Harmonic/State Model-Order Reduction of Nonlinear Networks
Ist Teil von
IEEE transactions on power delivery, 2016-06, Vol.31 (3), p.1379-1387
Ort / Verlag
New York: IEEE
Erscheinungsjahr
2016
Quelle
IEL
Beschreibungen/Notizen
This paper presents a practical approach to obtain reduced-order models for electric networks expressed in the dynamic harmonic domain (DHD). The proposed method reduces the DHD system of ordinary differential equations first in the harmonic sense via a voltage-based frequency-scan procedure and subsequently in the state sense via truncated balanced realizations. The harmonic-selection and truncation stage substantially reduces the original full-size system. The state-reduction process is applied to the already harmonic-reduced system, achieving further reduction. Two networks are used as case studies to demonstrate the reduction properties of the proposed model-order reduction methodology.