Increasing electrification of university campuses and the growing integration of renewable energy systems have highlighted the importance of assessing the resilience of local electrical infrastructures under different operational and disturbance scenarios. In this context, university campuses can be considered representative small-scale urban environments due to their diversity of buildings, energy consumption profiles, and distributed energy resources. Consequently, they constitute suitable case studies for analysing the resilience of electrical systems based on real operational data.

This work presents a resilience-oriented assessment of the electrical infrastructure of the Toledo Campus of the University of Castilla-La Mancha (Spain), with special focus on the interaction between distributed photovoltaic (PV) generation, electricity demand, and the internal microgrid configuration of the campus.

The Toledo Campus, located in the historical “Fábrica de Armas” complex, is composed of approximately 35 buildings dedicated to academic, research, administrative, and service activities. The electrical system is structured around five secondary centres (CSs), from which electricity is distributed throughout the campus. In 2024, several distributed PV systems were integrated in CS3, CS4, and CS5. The overall PV installation has a peak power of 339.35 kWp and consists of 617 PV modules distributed among five inverters with nominal powers ranging from 25 kW to 115 kW. According to Spanish regulation for installations above 100 kW, it operates under a zero-export configuration. Under campus configuration, PV surplus produced at one CS cannot be transferred to another centre with higher electricity demand. As a first step, it represents a significant constraint in the resilience assessment, since it potentially limits the overall flexibility and self-consumption capacity of the campus microgrid. Actually, it contributes to implement a significant framework for resilience analysis.

This work evaluates the campus microgrid capability to maintain operational performance under disturbances and damages. It takes advantage of real high-resolution monitoring data acquired during campus PV and consumption systems operations.

The campus resilience analysis is characterized by Performance-Damage-Duration (PDD) indices evaluation. They are also used to map the university resilience in different seasons and in working/non-working days, identifying the minimum/maximum impact

of damage events. The proposed methodology and the obtained results are expected to contribute to the development of resilience assessment strategies for university campuses and other complex public infrastructures with distributed renewable generation systems. This analysis also verifies renewables contribution to enhance energy autonomy under critical operating conditions.

This work is part of the IEA PVPS Task 19, whose main objectives are to advocate for grid-connected solar PV as a major power source and to support stakeholders by providing international studies and technical knowledge.