Concept and assumptions about the temporal graph database

Koszela, Jarosław; Szczepańczyk-Wysocka, Paulina

doi:10.1051/matecconf/201821004017

Cited by 2 publications

(1 citation statement)

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“…Table 1 shows physical machine properties for the testing environment. The physical machine hosted a virtual machine using the Hyper-V hypervisor and Microsoft Windows Server OS with Neo4j [20] installed and used as a graph database management system.…”

Section: Test Environmentmentioning

confidence: 99%

Graph Modeling for Efficient Retrieval of Power Network Model Change History

et al. 2021

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Power grids are constantly evolving, and data changes are increasing. Operational technology (OT) is controlled by IT technologies in smart grids, where changes in the physical world impose changes in the software data model, as well as the continuous generation of data points, resulting in time series datasets. The increased need for processing large amounts of data combined with requirements to maintain and increase overall performances has created a significant challenge for traditional database solutions and relational database models. The main idea of this paper was to find and propose a graph model that will allow the retrieval of historical connectivity in a reduced time complexity. Furthermore, the research question was addressed by evaluating three different approaches where the results provide a foundation for the proposed design guidelines related to optimizing graph-based databases for a modern smart grid system. The results of the experiments demonstrated reduced time complexities from 3 to 5 times depending on the typical industry usage patterns and the selected graph model. This suggests that the design decision may severely affect the outcome for given smart grid use cases when using historical features in OT technologies. Therefore, the main contribution of the research is the proposed guidelines on how to design an optimal graph model that satisfies the described smart grid requirements.

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Section: Test Environmentmentioning

confidence: 99%