Tao, Haochen;
Tziovani, Lysandros;
Casagrande, Vittorio;
Timotheou, Stelios;
Boem, Francesca;
(2025)
Resilient Microgrid Energy Management Under Grid Faults: A Convex Optimization Approach.
In:
2025 6th International Conference on Control and Fault-Tolerant Systems (SysTol), Proceedings.
IEEE: Ayia Napa, Cyprus.
(In press).
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Abstract
Microgrids are fundamental for future smart grids as they enhance energy resilience due to their ability to disconnect from the main grid and operate in islanded mode. This work proposes an innovative microgrid energy management scheme that is resilient to potential grid faults. Towards this direction, an optimization problem is formulated for the proactive scheduling of the microgrid operation in grid-connected mode to handle potential utility grid faults. Moreover, a second optimization problem is formulated for the outage management of the microgrid operation in islanded mode to minimize the load shedding by determining the power set-points of the energy storage system and renewable energy sources. However, solving the resulting non-convex optimization problem poses significant challenges. To reduce the computational complexity, a convex relaxation energy storage model is used, eliminating the complementarity constraints; however, it yields infeasible solutions when simultaneous charging and discharging occur. To address this issue, the considered problems are reformulated to penalise the charging power using a penalty term in the objective function and an iterative algorithm based on the bisection method is proposed to find the minimum value of the penalty term that yields feasible solutions. Simulation results indicate the proposed scheme can effectively manage microgrid operations during both grid-connected and islanded modes, ensuring economic operation while minimizing load shedding during utility grid faults.
| Type: | Proceedings paper |
|---|---|
| Title: | Resilient Microgrid Energy Management Under Grid Faults: A Convex Optimization Approach |
| Event: | Systol 2025 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.kios.ucy.ac.cy/systol25/ |
| Language: | English |
| Additional information: | This version is the author-accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Convex optimization, energy management, microgrid scheduling, resilience. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10216131 |
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