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Nested fast and simultaneous solution for time domain simulation of integrative power electric and electronic systems

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2 Author(s)
Strunz, K. ; Tech. Univ. Berlin, Berlin, Germany ; Carlson, E.

Summary form only given. As power electronics are increasingly used in power electric networks, there is an interest in the creation of time-domain simulation techniques that can model the diversity of the integrative power-electric and electronic system while achieving high accuracy and computational speed. In the proposed method, generation of electric network equivalents (GENE), this is supported through the nested structure of the overall simulation process. One or multiple parent simulations, in which the unknown voltages are calculated using nodal analysis, launch multiple child simulations concerned with diakoptic subdivisions of the system under study. The interfaces for information exchange between parent and child levels are designed to provide encapsulation. This makes the subdivisions appearing from outside in the form of network branches compatible with the nodal analysis approach. Computational efficiency is obtained through the coordinated application of sparse matrix methods, piecewise linear approximation of nonlinear characteristics, and precalculation of operations pertaining to recurring power electronic switch statuses. The resulting overall solution process is simultaneous, distributed, and suitable for real-time simulation. The devised methodology is validated through simulation of the CIGRE HVDC benchmark model, comprising AC networks, twelve-pulse power-electronic converter stations, harmonic filters, and DC transmission.

Published in:

Power & Energy Society General Meeting, 2009. PES '09. IEEE

Date of Conference:

26-30 July 2009

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