Teklemariam Tsegay Tesfay

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—We describe the real-time monitoring infrastructure of the smart-grid pilot on the EPFL campus. We experimentally validate the concept of a real-time state-estimation for a 20 kV active distribution network. We designed and put into operation the whole infrastructure composed by the following main elements: (1) dedicated PMUs connected on the(More)
—The evolution towards emerging Active Distribution Networks (ADNs) can be realized via a Real-Time State Estimation (RTSE) application facilitated by the use of Phasor Measurement Units (PMUs). A critical challenge in deploying PMU-based RTSE applications at large scale is the lack of a scalable and flexible communication infrastructure for the timely(More)
Active power distribution networks require sophisticated monitoring and control strategies for efficient energy management and automatic adaptive reconfiguration of the power infrastructure. Such requirements are realised by deploying a large number of various electronic automation and communication field devices, such as Phasor Measurement Units (PMUs) or(More)
—IEEE C37.118 is the current standard for syn-chrophasor measurements in power systems. It defines the measurement method and communication protocols for the entities in a synchrophasor network. The standard offers two different modes for client-server communication, but cannot be used unchanged over publish/subscribe communication architectures, whose(More)
—Multicast is proposed as a preferred communication mechanism for many power grid applications. One of the biggest challenges for multicast in smart grid is ensuring source au-thentication without violating the stringent time requirement of such applications. The research community and standardization bodies have proposed several authentication mechanisms(More)
—Phasor measurement units (PMUs) deployed to monitor the state of an electrical grid need to be patched from time to time to prevent attacks that exploit vulnerabilities in the software. Applying some of these patches requires a PMU reboot, which takes the PMU offline for some time. If the PMU placement provides enough redundancy, it is possible to patch a(More)
We are interested in the security of the MPLS Transport Profile (MPLS-TP), in the context of smart-grid communication networks. The security guidelines of the MPLS-TP standards are written in a complex and indirect way, which led us to pose as hypothesis that vendor solutions might not implement them satisfactorily. To test this hypothesis, we investigated(More)
PAR Teklemariam Tsegay TESFAY Be at war with your vices, at peace with your neighbours, and let every new year find you a better man. Acknowledgements First and foremost, I would like to thank my supervisor, Professor Jean-Yves Le Boudec, for accepting me, first as an intern and later as a PhD student. Working with him has been such a special privilege. His(More)
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