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Quantifying Uncertainties of Security and QoS for Design of Power Grid Communications Systems
KTH, School of Electrical Engineering (EES), Electric power and energy systems.
2016 (English)In: 2016 49th Hawaii International Conference on System Sciences (HICSS), IEEE Computer Society, 2016, 2566-2575 p.Conference paper (Refereed)Text
Abstract [en]

Reliable and secure communication, and high quality of service (QoS) (low latency, high availability, etc.) of data are critical to the successful operation of power systems. However, uncertainties, both aleatory and epistemic, are inherent to the system, which makes it difficult to secure the communication while fulfilling the QoS requirements. Nowadays, the administrators of the power grid's communication system have much flexibility in choosing a specific security scheme but the uncertainties make answering the question "what is the best scheme" or even "what is an adequate scheme" very difficult. Appropriately quantifying uncertainty and its effects on security is a key to choosing a sufficiently secure communication system for power grid while meeting QoS requirements. In this paper, we model aleatory and epistemic uncertainties using probability distributions and subjective logic respectively. Comprehensive quantification of the uncertainties can greatly sharpen administrators' understanding of the trade-offs between security and QoS and help them to select the most fitting security scheme to meet the QoS requirements. A case study demonstrates how our method works for two different application scenarios.

Place, publisher, year, edition, pages
IEEE Computer Society, 2016. 2566-2575 p.
, Proceedings of the Annual Hawaii International Conference on System Sciences, ISSN 1060-3425
Keyword [en]
Economic and social effects, Electric power systems, Electric power transmission networks, Probability distributions, Quality of service, Secure communication, Uncertainty analysis, Aleatory and epistemic uncertainties, Application scenario, Communications systems, High availability, Operation of power system, QoS requirements, Security scheme, Subjective Logic
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-189702DOI: 10.1109/HICSS.2016.320ISI: 000377358202081ScopusID: 2-s2.0-84975490397ISBN: 978-0-7695-5670-3OAI: diva2:949255
49th Hawaii International Conference on System Sciences (HICSS), Jan 05-08, 2016, Koloa, HI

QC 20160718

Available from: 2016-07-18 Created: 2016-07-11 Last updated: 2016-07-18Bibliographically approved

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Wu, Yiming
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Electric power and energy systems
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