Stefan Polster

Stefan Polster received the master degree in 2016 and the Ph.D. degree in 2021 in electrical engineering, both from Graz University of Technology, Austria. His research mainly deals with power system dynamics and operation. In 2017 he became a recipient of a DOC Fellowship of the Austrian Academy of Sciences at the Institute of Electrical Power Systems, Graz University of Technology.
Stefan Polster currently works at VERBUND Hydro Power as expert for power systems.

Doctoral Thesis 2021:
Enhancing Secure Grid Operation with Power Flow Controlling Devices and WAMS

Mike Alexander Lagler

Mike Lagler, born in Leoben/Austria in 1989, received his Ph.D. degree from Graz University of Technology in 2021. Until July 2021, Mike Lagler worked as a university assistant at the Institute of Electrical Power Systems at Graz University of Technology. His research interests included hybrid energy systems, decentralised generation and storage systems, as well as the calculation and analysis of power networks.
Mike Lagler currently works at Austrian Power Grid AG as an expert for grid operations

Doctoral Thesis (2021):
Influence of Optimising Prosumers on Rural Distribution Networks

Tarik Hubana

Tarik Hubana obtained his doctorate in technical sciences in electrical engineering at the Graz University of Technology in 2021. From November 2021, he is with the European Commission, where he works as a programme manager in the area of energy in the Delegation of the European Union to Bosnia and Herzegovina in Sarajevo/Bosnia and Herzegovina. With the strong background obtained through work experience with the distribution system operator, his research interests include smart distribution grids, power system analysis and protection, renewable energy integration and energy policy.

Dissertationsthema (2020):
Artificial Neural Networks Application for Station Protection

Benoit Bletterie

Benoît Bletterie, born in 1978 in Vichy/France, received his PhD from Graz University of Technology in 2019. Until 2017, Benoît Bletterie worked as a Senior Research Engineer at the Austrian Institute of Technology. His research activities covered the field of smart grids, with a focus on grid planning and operation, voltage regulation and reactive power management.
Since 2017, Benoît Bletterie has been working at Austrian Power Grid AG as an Operational Grid Planning Expert.

Doctoral Thesis (2019):
On the potential of voltage control to increase the hosting capacity of distribution networks

Thomas Halbedl

Thomas Halbedl, born in Graz/Austria in 1987, received his doctorate from Graz University of Technology in 2019. His research focus at the Institute for Electrical Systems and Grids was interference effects on the Austrian transmission grid - especially geomagnetic interference. This work was supported by Austrian Power Grid AG (APG). Thomas Halbedl has been working at ses-imagotag GmbH since 2019.

Doctoral Thesis (2019):
Low Frequency Neutral Point Currents on Transformer in the Austrian Power Transmission Network

Mario Leitner

Mario Leitner, born 1984 in Vienna/Austria, received his PhD from Graz University of Technology in 2019. During his electrical engineering studies (graduated in 2010), Mario Leitner worked for the transmission system operator APG in asset management. Since 2011, he has been employed at Austria's largest combined network operator Wiener Netze GmbH (formerly Wienstrom) and spent the first years as a network officer in electricity and telecommunications planning. After heading the network planning department for two years, he took over network technology and electricity operations with around 900 employees in 2018.

Doctoral Thesis (2019):
Praxisnahe Resilienzsteigerung der Mittelspannungsebene in bestehenden urbanen und ländlichen Netzen

Elisabeth Hufnagl

Elisabeth Hufnagl graduated in electrical engineering from the Graz University of Technology in 2014. She then worked as a university assistant at the Institute for Electrical Systems and Networks at TU Graz, focusing on grid reliability and grid protection. After completing her doctorate, she joined Wiener Netze, where Elisabeth Hufnagl has been working since 2019.


Doctoral Thesis (2018):
Choice of system neutral treatment and earth fault protection in aged medium voltage cable networks

Contact Information

Institute of Electrical Power Systems
Inffeldgasse 18/1
8010 Graz


Tel.:  +43 (0) 316 / 873 - 7551