Publications

Working Publications

B. Giraud, R. Nellikath, J. Vorwerk, M. Alowaifeer, S. Chatzivasileiadis, Neural Networks for AC Optimal Power Flow: Improving Worst-Case Guarantees during Training

P. Ellinas, I. Chaudhuri, J. Vorwerk, S. Chatzivasileiadis, Verification and Validation of Physics-Informed Surrogate Component Models for Dynamic Power-System Simulation, accepted for presentation at the 65th IEEE Conference on Decision and Control (CDC 2026)

B. Gelfort, I. Karampinis, M. Desai, P. Aristidou, G. Hug, J. Vorwerk, Embedding Neural Surrogates into Established Power System Simulators, accepted for presentation at the PowerUp Conference 2026, Boulder, USA

P. Ellinas, J. Vorwerk, S. Chatzivasileiadis, Tools to Explain Neural Networks for Power System Dynamics, submitted for review to IEEE Transactions on Power Systems

Journal Publications

I. Karampinis, P. Ellinas, J. Vorwerk, S. Chatzivasileiadis, Neural Operators or Power Systems: A Physics-Informed Framework for Modeling Power System Components, Electric Power Systems Research, Volume 263, 2026, 113755, presented at the 24th Power Systems Computation Conference (PSCC 2026), Cyprus

P. Ellinas, I. Karampinis, I. Ventura Nadal, R. Nellikkath, J. Vorwerk, S. Chatzivasileiadis, Physics-informed machine learning for power system dynamics: A framework incorporating trustworthiness, Sustainable Energy, Grids and Networks, Volume 43, 2025, 101818, presented at the 12th Bulk Power System Dynamics and Control Symposium (IREP 2025),22-27 June 2025, Sorrento, Italy

B. Giraud, L. Charles, AM Nakiganda, J. Vorwerk, S. Chatzivasileiadis, A Dataset Generation Toolbox for Dynamic Security Assessment: On the Role of the Security Boundary, Sustainable Energy, Grids and Networks, Volume 43, 2025, 101833, presented at the 12th Bulk Power System Dynamics and Control Symposium (IREP 2025), Sorrento, Italy

J. Vorwerk, I. Saedi, P. Mancarella, G. Hug, Electrifying thermal loads vs. installing batteries: A case study on fast frequency resource potentials of the Victorian power system, Electric Power Sytems Research, Volume 235, 2024, 110622, presented at the 23rd Power Systems Computation Conference (PSCC 2024), Paris-Sacaly, France

J. Vorwerk, C. Tajoli, G. Hug, Hierarchical coordination scheme for voltage-aware fast frequency provision with flexible loads, Electric Power Sytems Research, Volume 235, 2024, 110614, presented at the 23rd Power Systems Computation Conference (PSCC 2024), Paris-Sacaly, France

J. Vorwerk, U. Markovic, P. Aristidou, G. Hug, Quantifying the uncertainty imposed by inaccurate modeling of active distribution grids, Electric Power Systems Research, Volume 211, 2022, 108426, presented at the 22nd Power Systems Computation Conference (PSCC 2022), Porto, Portugal

J. Vorwerk, U. Markovic, P. Aristidou, E. Vrettos, G. Hug, Modelling of variable-speed refrigeration for fast-frequency control in low-inertia systems, IET Smart Grid, Colume 3, Issue 6, 926-936

Conference Publications

K. Kaiser, J. Vorwerk, M. Hohmann, S. Karagiannopoulos, F. Streiff, G. Hug, Determining a Robust Lower Voltage Bound on Voltage Magnitudes to Enhance Voltage Stability, IEEE Powertech, Belgrade, 2023

J. Rousseau, J. Vorwerk, I. Avramiotis, C. Welti, G. Hug, Employing imbalance forecasts to proactively counteract deterministic frequency deviations, IEEE Powertech, Belgrade, 2023

J. Vorwerk, M.G. Dozein, P. Mancarella, G. Hug, Analytical Discussion on Dynamics of Inverter-Based Resources under Small-Signal Conditions, IEEE Powertech, Belgrade, 2023

J. Vorwerk, T. Zufferey, P. Aristidou, G. Hug, Using quantile forecasts for dynamic equivalents of active distribution grids under uncertainty, In proceedings of the 11th Bulk Power System Dynamics and Control Symposium (IREP 2022), July 25-30, 2022, Banff, Canada

J. Vorwerk, U. Markovic, G. Hug, Fast demand response with variable speed thermal loads - Towards universal modeling for stability assessment, 2021 North American Power Symposium (NAPS), College Station, TX, USA, 2021

J. Vorwerk, U. Markovic, G. Hug, Comparing the Damping Capabilities of different Fast-Frequency Controlled Demand Technologies, 2021 IEEE Madrid PowerTech, Madrid, Spain, 2021

U. Markovic, J. Vorwerk, P. Aristidou, G. Hug, Stability Analysis of Converter Control Modes in Low-Inertia Power Systems, 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe), Sarajevo, Bosnia and Herzegovina, 2018

Theses

J. Vorwerk, Integration of Fast Demand Response into Renewable Power Systems, Doctoral Thesis, ETH Zürich, 2023

J. Vorwerk, Effect of Electric Field on Droplets Impacting Surfaces with Different Wettabilities, Master thesis at ETH Zürich, 2019

J. Vorwerk, Small-signal analysis of power systems with low rotational inertia, Semester project at ETH Zürich, 2018