Conference paper information

Resilient Day-ahead Scheduling of Island Grids Against Separation-Driven Under-Frequency Events

M. Sarvarizadeh, B.V. Venkatasubramanian, M. Rajabdorri, L. Sigrist, E. Lobato, M. Panteli

I International Conference on Renewable Energy - ICEREH 2026, Valverde (Spain). 10-13 November 2026

Summary:

Small island power systems are vulnerable to extreme weather events that can split the system into asynchronous areas and cause severe frequency disturbances. Existing Frequency-Constrained Unit Commitment (FCUC) formulations secure the schedule only against outages within a single synchronous system, and therefore cannot guarantee frequency security once separation occurs. This paper proposes an areabased FCUC framework that secures the day-ahead schedule against separation-driven under-frequency events. Neural network classifiers are trained to capture the nonlinear postseparation frequency nadir of areas, while importance sampling is used to increase their accuracy near the security boundary. The framework is compared against standard FCUC on a model of the La Palma island grid. Results show that the proposed formulation ensures dynamic frequency security during separation events.

Spanish layman's summary:

Este artículo presenta un nuevo método de programación diaria para ayudar a las redes eléctricas insulares a mantener la estabilidad de frecuencia cuando fenómenos extremos separan la red en áreas. Las redes neuronales permiten mejorar la resiliencia y reducir el riesgo de cortes.

English layman's summary:

This paper presents a new day-ahead scheduling method to help small island power grids remain frequency-stable when extreme weather separates the grid into areas. Neural networks capture complex frequency behavior, improving resilience and reducing the risk of load shedding.

Keywords: resilience, unit commitment, frequency, machine learning, neural network

Publication date: 10-Nov-2026.

Citation:
M. Sarvarizadeh, B.V. Venkatasubramanian, M. Rajabdorri, L. Sigrist, E. Lobato, M. Panteli, "Resilient Day-ahead Scheduling of Island Grids Against Separation-Driven Under-Frequency Events", presented at I International Conference on Renewable Energy - ICEREH 2026, Valverde, Spain, 10-13 November 2026

Research topics:

Isolated systems: Islands, microgrids, off-grid
Stability: Large disturbance stability, tuning of frequency loadshedding schemes, excitation control, small disturbance stability, tuning of power system stabilizers, identification of AVR and governor models

Research groups:

Instituto de Investigación Tecnológica (IIT)

ODS:

Goal 7: Affordable and clean energy

IIT-26-285C

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