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Título del libro: 2016 Power Systems Computation Conference (pscc)
Título del capítulo: Power Flow Solutions of ACIDC Micro-grid Structures

Autores UNAM:
LUIS MIGUEL CASTRO GONZALEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2016
Palabras clave:

Micro-grids; multi-terminal HVDC systems; Newton-Raphson method; power flows; VSC modeling


Resumen:

This paper presents a new and general frame-of-reference for the unified, power flow solution of AC and DC micro-grids using the Newton-Raphson method, where the quadratic convergence towards the solution is preserved. The cornerstone of this modeling development in power flow theory is the so-called multi-terminal VSC-HVDC system. In this frame-of-reference, an AC micro-grid of arbitrary configuration is connected to the high-voltage side of the LTC transformer of a VSC station. In turn, the DC side of each VSC is linked to a DC system of arbitrary configuration. Any number of AC microgrids may exist and the DC system may contain single load or generation points such as a PV installation. Each VSC model takes into account, in aggregated form, the phase-shifting and scaling nature of the PWM control. It also accounts for the VSC current design limits, PWM limits within the linear range, switching losses and ohmic losses.


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