A behavioural dynamic model for constant power loads in single-phase AC systems
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10.1016/j.automatica.2021.109744
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/356820
Tipus de documentArticle
Data publicació2021-09-01
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Constant power loads (CPLs) in power systems have a destabilizing effect that gives rise to significant oscillations or to network collapse, motivating the development of new methods to analyse their effect in AC and DC power systems. A sine qua non condition for this analysis is the availability of a suitable mathematical model for the CPL. In the case of DC systems power is simply the product of voltage and current, hence a CPL corresponds to a first–third quadrant hyperbola in the loads voltage–current plane. The same approach is applicable for balanced three-phase systems that, after a rotation of the coordinates to the synchronous frame, can be treated as a DC system. Modelling CPLs for single-phase (or unbalanced poly-phase) AC systems, on the other hand, is a largely unexplored area because in AC systems (active and reactive) power involves the integration in a finite window of the product of the voltage and current signals. In this paper we propose a simple dynamic model of a CPL that is suitable for the analysis of single-phase AC systems. We give conditions on the tuning gains of the model that guarantee the CPL behaviour is effectively captured.
CitacióGriño, R. [et al.]. A behavioural dynamic model for constant power loads in single-phase AC systems. "Automatica", 1 Setembre 2021, vol. 131, p. 109744:1-109744:8.
ISSN0005-1098
Versió de l'editorhttps://www.sciencedirect.com/science/article/abs/pii/S0005109821002648
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dCPL_auto_v12f.pdf | 1,155Mb | Visualitza/Obre |