Format: This event will be held in person, on June 18th 2026.
Location: CentraleSupélec campus, Gif-sur-Yvette (Southern Paris), in Salle de conférence – Amphi Centre de Langues of the Eiffel Building, 3rd floor.
5th Workshop of the RTE Chair at CentraleSupélec
Registration: Attendance is free, but registration is mandatory before June 9th to allow for an optimal reception of the participants. To register, please fill out the following form.
The tentative scientific program of the day is as follows (Some titles may change) :
🌅 Morning Session: Grid Theory & System Stability
| Time | Speaker(s) | Topic |
| 08:45 – 09:00 | Coffee: Registration & Networking | |
| 09:00 – 09:30 | Sorin Olaru & Lucas Saludjian | Overview, recent works, and perspectives |
| 09:30 – 10:00 | Antoine Chaillet | HCode presentation |
| 10:00 – 10:30 | Verena Haberle | Next-Generation Grid Codes: Towards a New Paradigm for Dynamic Ancillary Services |
| 10:30 – 10:50 | Coffee Break | |
| 10:50 – 11:20 | Farah Kafnemer | Guarantees of stable switching for power systems |
| 11:20 – 11:50 | Yuning Jiang | Distributed Coordination for Integrated Transmission-Distribution |
| 11:50 – 12:20 | Vahid Hamdipoor | Power congestion management using controlled vanishing constraint |
🍴 Mid-Day Break
| 12:20 – 13:40 | Lunch |
☀️ Afternoon Session: Optimization, Control & Deployment
| Time | Speaker(s) | Topic |
| 13:40 – 14:10 | Giorgio Valmorbida | Quadratic programming with ramp functions & fast MPC |
| 14:10 – 14:40 | Sergio Dorado | MTKPowerFlow.jl —Acausal Circuit-Based Power Flow Modeling and Simulation |
| 14:40 – 15:10 | Balthazar Donon | Tertiary voltage control using GNN: Demonstration to deployment |
| 15:10 – 15:30 | Coffee Break | |
| 15:30 – 16:00 | Romain Fontaineau | Secondary voltage control in sub-transmission grids |
| 16:00 – 16:30 | Martin Gulan & Oumayma Khattabi | Data-driven approximation of regions of attraction via an LP-based selection of PWA Lyapunov functions |
| 16:30 – 17:00 | Louis Jannin | Modeling uncertainties with massive integration of RES |
| 17:00 – 17:30 | Sofiane Chalal | Quantum computing: Perspectives for power systems |
| 17:30 – 17:45 | Sorin Olaru | Summary of the day and next steps |
Abstracts:
Next-Generation Grid Codes: Towards a New Paradigm for Dynamic Ancillary Service, Verena Haberle
This talk introduces a conceptual foundation for Next Generation Grid Codes (NGGCs) based on stability and performance certificates, enabling the provision of dynamic ancillary services such as fast frequency and voltage regulation through decentralized frequency-domain criteria. The NGGC framework offers two key benefits: (i) rigorous closed-loop stability guarantees, and (ii) explicit performance guarantees for frequency and voltage dynamics in power systems. Regarding (i) stability, we employ loop-shifting and passivity-based techniques to derive local frequency-domain stability certificates for individual device dynamics. These certificates ensure the closed-loop stability of the entire interconnected power system through fully decentralized verification. Concerning (ii) performance, we establish quantitative bounds on critical time-domain indicators of system dynamics, including the average-mode frequency and voltage nadirs, the rate-of-change-of-frequency (RoCoF), steady-state deviations, and oscillation damping capabilities. The bounds are obtained by expressing the performance metrics as frequency-domain conditions on local device behavior. The NGGC framework is non-parametric, model-agnostic, and accommodates arbitrary device dynamics under mild assumptions. It thus provides a unified, decentralized approach to certifying both stability and performance without requiring explicit device-model parameterizations. Moreover, the NGGC framework can be directly used as a set of specifications for control design, offering a principled foundation for future stability- and performance-oriented grid codes in power systems.
MTKPowerFlow.jl —Acausal Circuit-Based Power Flow Modeling and Simulation, Sergio Dorado
Acausal modeling has seen broad success in physical system simulation, especially through Modelica-based ecosystems. In power systems, tools and libraries such as OpenIPSL, PowerGrids, Dassault Systèmes’ Electric Power Systems Library, and RTE’s Dynawo show the value of declarative, component-oriented modeling for phasor-domain, dynamic, and steady-state workflows.
This lightning talk presents MTKPowerFlow, a proof-of-concept open-source Julia package for steady-state power flow modeling using ModelingToolkit. MTKPF represents buses, branches, loads, generators, breakers, and related components as acausal symbolic models, then relies on ModelingToolkit and SciML tooling to assemble, transform, and compile the resulting nonlinear algebraic systems.
The talk focuses on power flow as a circuit-oriented modeling problem rather than only a monolithic solver routine. This perspective connects with equivalent-circuit and sparse-tableau formulations and opens the way to node-breaker representations, topology-aware studies, switching formulations, and optimization-based extensions.
Data-driven approximation of regions of attraction via an LP-based selection of PWA Lyapunov functions, Martin Gulan.
The talk presents a method to approximate regions of attraction of unknown nonlinear dynamical systems from data. Assuming pointwise evaluations of the vector field and known Lipschitz bounds, a polyhedral uncertainty set of admissible dynamics is constructed.
This uncertainty description enables the synthesis of a continuous piecewise affine (PWA) Lyapunov candidate via linear program (LP), enforcing a robust decrease condition for all admissible vector fields. The approach allows certification of a region of attraction (RoA) consistent with the available data.
Numerical examples illustrate the effectiveness of the proposed method in extracting certified RoAs from sparse data.
RTE - CentraleSupélec Chair 