[HTML][HTML] Physics-informed neural networks for time-domain simulations: Accuracy, computational cost, and flexibility

J Stiasny, S Chatzivasileiadis - Electric Power Systems Research, 2023 - Elsevier
The simulation of power system dynamics poses a computationally expensive task.
Considering the growing uncertainty of generation and demand patterns, thousands of …

[HTML][HTML] Split-based sequential sampling for realtime security assessment

AAB Bugaje, JL Cremer, G Strbac - … Journal of Electrical Power & Energy …, 2023 - Elsevier
Abstract Machine learning (ML) for real-time security assessment requires a diverse training
database to be accurate for scenarios beyond historical records. Generating diverse …

[HTML][HTML] Physics-informed neural networks for phase locked loop transient stability assessment

R Nellikkath, I Murzakhanov, S Chatzivasileiadis… - Electric Power Systems …, 2024 - Elsevier
A significant increase in renewable energy production is necessary to achieve the UN's net-
zero emission targets for 2050. Using power-electronic controllers, such as Phase Locked …

Minimizing worst-case violations of neural networks

R Nellikkath, S Chatzivasileiadis - arXiv preprint arXiv:2212.10930, 2022 - arxiv.org
Machine learning (ML) algorithms are remarkably good at approximating complex non-
linear relationships. Most ML training processes, however, are designed to deliver ML tools …

Global performance guarantees for neural network models of ac power flow

S Chevalier, S Chatzivasileiadis - arXiv preprint arXiv:2211.07125, 2022 - arxiv.org
Machine learning can generate black-box surrogate models which are both extremely fast
and highly accurate. Rigorously verifying the accuracy of these black-box models, however …

Scalable bilevel optimization for generating maximally representative OPF datasets

IV Nadal, S Chevalier - 2023 IEEE PES Innovative Smart Grid …, 2023 - ieeexplore.ieee.org
New generations of power systems, containing high shares of renewable energy resources,
require improved data-driven tools which can swiftly adapt to changes in system operation …

A system-based framework for optimal sensor placement in smart grids

A Mwangi, K Sundsgaard, JAL Vilaplana… - 2023 IEEE Belgrade …, 2023 - ieeexplore.ieee.org
The number of sensors deployed in power systems unlocks the promising benefits and
capabilities of digitalisation. Sensor-driven applications and communication technologies …

Optimization-based exploration of the feasible power flow space for rapid data collection

IV Nadal, S Chevalier - 2022 IEEE International Conference on …, 2022 - ieeexplore.ieee.org
This paper provides a systematic investigation into the various nonlinear objective functions
which can be used to explore the feasible space associated with the optimal power flow …

Towards an AI assistant for power grid operators

A Marot, A Rozier, M Dussartre… - HHAI2022 …, 2022 - ebooks.iospress.nl
Power grids are becoming more complex to operate in the digital age given the current
energy transition to cope with climate change. As a result, real-time decision-making is …

Enriching neural network training dataset to improve worst-case performance guarantees

R Nellikkath, S Chatzivasileiadis - 2023 IEEE Belgrade …, 2023 - ieeexplore.ieee.org
Machine learning algorithms, especially Neural Networks (NNs), are a valuable tool used to
approximate non-linear relationships, like the AC-Optimal Power Flow (AC-OPF), with …