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On the convergence of the sequential power flow for multiterminal VSC AC/DC systems

J.C. Fernández-Pérez, F.M. Echavarren, L. Rouco

Following the vision of future Supergrids, the existing power systems are expected to evolve into AC/DC systems containing Voltage Source Converters with multiterminal configurations. This paper presents a new sequential power flow algorithm for such power systems. The algorithm can be applied to systems with multiple AC and DC grids of any grid topology. Because of its pure AC/DC network decomposition, the simplification of elements within the converter stations is not required, as is the case with other proposals in the literature. The paper also addresses the convergence properties of the proposed algorithm. A convergence factor has been designed that allows controlling the exit criterion within each inner loop of the sequential AC/DC load flow problem. It is shown that by modulating the convergence factor the number of inner loop iterations needed to achieve a solution can be diminished.


Keywords: AC/DC, HVDC transmission, multiterminal, MTDC, power flow analysis, Voltage Source Converter (VSC)


IEEE Transactions on Power Systems. Volumen: 33 Numero: 2 Páginas: 1768-1776

Journal Impact Factor: JCR impact factor 5.255 (2017)

DOI reference: DOI icon 10.1109/TPWRS.2017.2720740    

Publicado en papel: Marzo 2018. Publicado on-line: Junio 2017.


    Líneas de investigación:
  • *Régimen permanente: flujos de cargas, análisis de restricciones de operación, flujos de cargas óptimo, servicio complementario de control de tensiones, cortocircuitos, protecciones en redes de transporte y distribución, modelos térmicos de cables

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