52 citations · 123 across the 21 of their papers we have counts for
25 papers
Dynamic Flexibility Requests in Local Flexibility Markets: Quantifying the DSO Willingness to Pay
Savvas Panagi, Chrysovalantis Spanias, Petros Aristidou
Local Flexibility Markets (LFMs) require Distribution System Operators (DSOs) to determine both the quantity of flexibility to procure and the corresponding willingness to pay duri…
A Benchmarking Case Study for Local Flexibility Markets: Network, Scenarios, and Open Inputs
Savvas Panagi, Chrysovalantis Spanias, Petros Aristidou
External inputs to local flexibility markets, network models, demand scenarios, flexibility offers, and asset thermal, economic parameters do not change the clearing methodology, y…
Enhanced Optimal Power Flow Using a Trained Neural Network Surrogate for Distribution Grid Constraints
Savvas Panagi, Chrysovalantis Spanias, Petros Aristidou
The growing penetration of distributed energy resources (DERs), electric vehicles (EVs), and heat pumps (HPs) in distribution networks underscores the need for secure, computationa…
A Thermal-Electrical Co-Optimization Framework for Active Distribution Grids with Electric Vehicles and Heat Pumps
Savvas Panagi, Chrysovalantis Spanias, Petros Aristidou
The growing electrification of transportation and heating through Electric Vehicles (EVs) and Heat Pumps (HPs) introduces both flexibility and complexity to Active Distribution Net…
Physics-Informed Neural Network Models for EMT Simulators
Ignasi Ventura Nadal, Nicolae Darii, Petros Aristidou +4
This is the first paper, to the best of our knowledge, to propose a framework that integrates Physics-Informed Neural Network (PINN) models in Electromagnetic Transient (EMT) simul…
Conversations with Data: How Data Journalism Affects Online Comments in the New York Times
Avner Kantor, Sheizaf Rafaeli
Users in the data age have access to more data than ever before, but little is known how they interact with it. Using transparency and multimedia, data journalism (DJ) lets users e…
Inertia-Aware Microgrid Investment Planning Using Tractable Decomposition Algorithms
Agnes Marjorie Nakiganda, Shahab Dehghan, Petros Aristidou
The integration of the frequency dynamics into Micro-Grid (MG) investment and operational planning problems is vital in ensuring the security of the system in the post-contingency…
Using Quantile Forecasts for Dynamic Equivalents of Active Distribution Grids under Uncertainty
Johanna Vorwerk, Thierry Zufferey, Petros Aristidou +1
While distribution networks (DNs) turn from consumers to active and responsive intelligent DNs, the question of how to represent them in large-scale transmission network (TN) studi…
Fast Mapping of Flexibility Regions at TSO-DSO Interfaces under Uncertainty
Alice Patig, Ognjen Stanojev, Petros Aristidou +2
The gradual decommissioning of fossil fuel-driven power plants, that traditionally provide most operational flexibility in power systems, has led to more frequent grid stability is…
Multiple Ancillary Services Provision by Distributed Energy Resources in Active Distribution Networks
Ognjen Stanojev, Yi Guo, Petros Aristidou +1
The electric power system is currently experiencing radical changes stemming from the increasing share of renewable energy resources and the consequent decommissioning of conventio…
Improving Stability of Low-Inertia Systems using Virtual Induction Machine Synchronization for Grid-Following Converters
Ognjen Stanojev, Uros Markovic, Petros Aristidou +1
This paper presents a novel strategy for the synchronization of grid-following Voltage Source Converters (VSCs) in power systems with low rotational inertia. The proposed synchroni…
Towards a Sustainable Microgrid on Alderney Island Using a Python-based Energy Planning Tool
Shahab Dehghan, Agnes M Nakiganda, James Lancaster +1
In remote or islanded communities, the use of microgrids (MGs) is necessary to ensure electrification and resilience of supply. However, even in small-scale systems, it is computat…
A Reinforcement Learning Approach for Fast Frequency Control in Low-Inertia Power Systems
Ognjen Stanojev, Ognjen Kundacina, Uros Markovic +3
The electric grid is undergoing a major transition from fossil fuel-based power generation to renewable energy sources, typically interfaced to the grid via power electronics. The…
A Stochastic-Robust Approach for Resilient Microgrid Investment Planning Under Static and Transient Islanding Security Constraints
Agnes Marjorie Nakiganda, Shahab Dehghan, Uros Markovic +2
When planning the investment in Microgrids (MGs), usually static security constraints are included to ensure their resilience and ability to operate in islanded mode. However, unsc…
Active Distribution Grids Providing Voltage Support: The Swiss Case
Stavros Karagiannopoulos, Costas Mylonas, Petros Aristidou +1
The increasing installation of controllable Distributed Energy Resources (DERs) in Distribution Networks (DNs) opens up new opportunities for the provision of ancillary services to…
Modelling of Variable-Speed Refrigeration for Fast-Frequency Control in Low-InertiaSystems
Johanna Vorwerk, Uros Markovic, Petros Aristidou +2
In modern power systems, shiftable loads contribute to the flexibility needed to increase robustness and ensure security. Thermal loads are among the most promising candidates for…
Improving Dynamic Performance of Low-Inertia Systems through Eigensensitivity Optimization
Ashwin Venkatraman, Uros Markovic, Dmitry Shchetinin +3
An increasing penetration of renewable generation has led to reduced levels of rotational inertia and damping in the system. The consequences are higher vulnerability to disturbanc…
Economic Valuation and Pricing of Inertia in Inverter-Dominated Power Systems
Matthieu Paturet, Uros Markovic, Stefanos Delikaraoglou +3
This paper studies the procurement and pricing of inertial response using a frequency-constrained unit commitment formulation, which co-optimizes the provision of energy and inerti…
MPC-Based Fast Frequency Control of Voltage Source Converters in Low-Inertia Power Systems
Ognjen Stanojev, Uros Markovic, Petros Aristidou +3
A rapid deployment of renewable generation has led to significant reduction in the rotational system inertia and damping, thus making frequency control in power systems more challe…
Active Distribution Grids offering Ancillary Services in Islanded and Grid-connected Mode
Stavros Karagiannopoulos, Jannick Gallmann, Marina Gonzalez Vaya +2
Future active distribution grids (ADGs) will incorporate a plethora of Distributed Generators (DGs) and other Distributed Energy Resources (DERs), allowing them to provide ancillar…
Stochastic Unit Commitment in Low-Inertia Grids
Matthieu Paturet, Uros Markovic, Stefanos Delikaraoglou +3
In this paper, the Unit Commitment (UC) problem in a power network with low levels of rotational inertia is studied. Frequency-related constraints, namely the limitation on Rate-of…
Online Estimation of Power System Inertia Using Dynamic Regressor Extension and Mixing
Johannes Schiffer, Petros Aristidou, Romeo Ortega
The increasing penetration of power-electronic-interfaced devices is expected to have a significant effect on the overall system inertia and a crucial impact on the system dynamics…
Risk averse stochastic programming: time consistency and optimal stopping
Alois Pichler, Alexander Shapiro
Bellman formulated a vague principle for optimization over time, which characterizes optimal policies by stating that a decision maker should not regret previous decisions retrospe…
TDNetGen: An open-source, parametrizable, large-scale, transmission and distribution test system
Nicolas Pilatte, Petros Aristidou, Gabriela Hug
In this paper, an open-source MATLAB toolbox is presented that is able to generate synthetic, combined transmission and distribution network models. These can be used to analyse th…