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Item type:Publication, Access status: with files , Towards grid-aware multi-period flexibility aggregation — a constrained zonotope approach(Elsevier, 2027-07-10); ; ; ; Aggregation schemes provide a means to reduce the computational complexity of power system operation by reducing the number of devices that are considered individually. This can be achieved with tools of computational geometry, where the feasible set is projected onto the decision variables of the point of interconnection. Set projection is computationally expensive, especially in the context of multi-period power system operation. This calls for efficiency improvements via structure exploitation of set representations. This paper proposes efficient flexibility aggregation via constrained zonotopes. We evaluate the performance of the proposed method on a 15-bus distribution grid with time-dependent elements for up to 96 timesteps. The results suggest that the presented method significantly improves computation times compared to classic polytope projection approaches.Publicationtype: Journal Article10 5 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Flexible and reconfigurable automation architecture for electrical power systemsAn increased penetration of decentralized generation in the current electrical power system brings a number of challenges that grid operators need to address. With this in mind, the main objective is the control and protection of a heterogeneous system that presents an unpredictable behavior which could ultimately hinder the stable operation of the present and future electrical infrastructure. Having this in mind, it is desirable to bolster emerging control and protection systems to adapt to new requirements and possible constraints. Consequently, the project i-Automate seeks to develop a concept that is able to use the available standards, functionalities and hardware to bring forward a flexible and reconfigurable automation network to help system operators to cope with the different challenges here presented. For the purpose of testing such a concept a voltage control architecture is used in a distribution grid. Furthermore, a failure of one of the main controllers is induced and the reconfiguration of the system is performed. Finally, it is observed that regardless of the failure the remaining devices take the control of the system and are able to maintain the voltage within the acceptable range.Publicationtype: Conference Paper40