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PhD defence by Mohammed Seifu Kemal


27.06.2019 kl. 12.30 - 16.00


“Real-time Monitoring of Low Voltage Grids using Adaptive Smart Meter Data Collection”

Modern-day electric distribution grid is experiencing rapid and fundamental changes. The share of distributed generation units such as small-scale wind turbines, photovoltaic panels, electric vehicle charging stations and heat pumps is growing at low voltage distribution grids. This ongoing transition is challenging the Distribution System Operators as they can no longer rely on traditional methods to ensure reliable operation of the distribution grid. The first step towards the reliable operation of Low Voltage (LV) grids is to increase observability via real-time monitoring and enable data-driven novel applications such as Distribution System State Estimation, Demand Management, and Voltage Control. Countries in Europe such as Denmark have close to 100% roll-out of Advanced Smart Metering Infrastructure (AMI) at the LV distribution grids. But the current AMI is developed and mainly used for billing of customer power consumption with a meter reading at long update rates (6 hours to once or twice a day). The low bandwidth AMI communication networks contribute to the slow updates of smart meter data and high latency that influences data quality for real-time LV monitoring applications. Data from smart meters should be collected in a resilient, secure and timely manner to fulfil requirements for real-time applications. This thesis investigates the use of smart meter data in the context of real-time monitoring applications. The three main contributions of the thesis are 1) Design and analysis of adaptive data collection mechanisms to support near real-time monitoring applications using AMI data 2) Assessment of real-time LV grid applications such as Distribution System State Estimation, Demand Management, and Attack Detection in Voltage Control 3) Extension and coupling of evaluation frameworks to create a codomain simulation framework incorporating AMI, electrical grid and communication subsystems.

Assessment Committee
Professor, Andrea Bondavalli, University of Florence, Italy
Associate Professor, Rune Hylsberg Jacobsen, Aarhus University, Denmark
Associate Professor, Jimmy Jessen Nielsen, Aalborg University (Chairman)

Associate Professor, Rasmus L. Olsen, Aalborg University
Professor, Hans Peter Schwefel, Aalborg University

Associate Professor, Tatiana K. Madsen, Aalborg University

After the defence there will be a reception at Fredrik Bajers 7, room A1-112

Please feel welcome to join


Free of Charge


Wireless Communication Networks Section, Department of Electronic Systems


Fredrik Bajers Vej 7, room B3-104