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 medium-voltage(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)
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 synchrophasor 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 major(More)
State estimation is an important power system tool used to best estimate the system state through analysis of remotely collected sensor measurements and the power system topology. The reliability of the estimated output depends on the quality of the input measurements. Therefore, grid operators use Bad Data Detection (BDD) techniques to filter out grossly(More)
An active distribution network (ADN) is an electrical-power distribution network that implements a real-time monitoring and control of the electrical resources and the grid. Effective monitoring and control in an ADN is realised by deploying a large number of sensing and actuating intelligent electronic devices (IEDs) and a reliable two-way communication(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 authentication without violating the stringent time requirement. The research community and standardization bodies have proposed several authentication mechanisms for smart grid multicast(More)
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