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Smart Control of Energy Distribution Grids over Heterogeneous Communication Networks

pubblicazioni - Articolo

Smart Control of Energy Distribution Grids over Heterogeneous Communication Networks

Tutte le soluzioni ICT wireless analizzate in questo documento mostrano un livello di prestazioni sufficiente per supportare i due casi d’uso di controllo presentati. Tuttavia, in scenari di infrastrutture pubbliche condivise, è richiesto un margine in termini di prestazioni.

Off-the shelf wireless communication technologies reduce infrastructure deployment costs and are thus attractive for distribution system control. Wireless communication however may lead to variable network performance. Hence the impact of this variability on overall distribution system control behavior needs to be analyzed within the full system context. This paper considers two prominent families of wireless communication technologies: cellular 2G to 4G systems and IEEE 802.11 WiFi. Selected results on network performance and its impact on two distribution system control use-cases are presented. The main focus is on the impact of varying cross-traffic levels, different deployment and propagation scenarios, as well as malicious attacks. A full communication protocols stack, ranging from bare socket interfaces to full-scale IEC61850 implementations with security features, is used within physical testbeds as well as model-based analysis.

All wireless ICT solutions analyzed in this paper show a performance level sufficient for supporting the presented two control use-cases. However, in scenarios of shared, public infrastructures, headroom in terms of performance is required. In combination with factors such as long-term investment protection, among the cellular technologies, only 4G, and to some degree 3G, can be considered as viable choices. 2G is in the process of being dropped by telecommunication providers due to low spectral efficiency and performance.

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