Summary:
Extreme events such as floods, hurricanes, earthquakes, and wildfires pose significant threats to the uninterrupted supply of electricity to consumers, as they can cause the failure of numerous power system components. The resilience of a power system is defined by its ability to withstand extreme events and continue meeting demand. While the placement of multi-carrier microgrids (MGs) in power systems can impact resilience, the literature lacks research on resilience-oriented placement. This paper aims to address this gap by proposing a resilience-oriented placement strategy for multi-carrier MGs, utilizing switchable transmission lines to enhance the resilience of power systems. The study focuses on a heat-power-hydrogen MG that obtains gas from a gas network, exchanges power with the main power system, and incorporates combined heat and power (CHP), electrolyzer, and thermal storage. The developed model employs a stochastic mixed-integer linear programming (MILP) approach, ensuring the attainment of the global optimum. Resilience is evaluated using the metric of expected load not supplied (ELNS). The results demonstrate that when the bus connected to the MG is isolated, the MG generates electricity through its CHP unit to meet local demand, reducing the total demand shed in the power system and improving system resilience. Specifically, the MG reduces ELNS from 4955.48 MWh to 2356.64 MWh, indicating a remarkable 52% improvement in ELNS. Furthermore, the study shows that transmission line switching further decreases ELNS from 2356.64 MWh to 848.68 MWh. Several experiments are conducted to analyze the sensitivity of power system resilience to the number of MGs, the MG-power system exchange limit, and the limit on gas import from the gas network.
Spanish layman's summary:
Este artículo propone una estrategia resistente para microrredes multiportadoras usando líneas de transmisión conmutables. Se centra en la programación de microrredes de calor-potencia-hidrógeno, empleando un modelo MILP estocástico. Los resultados muestran una reducción del 52% en ELNS, que disminuye aún más con la conmutación de la línea de transmisión.
English layman's summary:
This paper proposes a resilient strategy for multi-carrier microgrids using switchable transmission lines. It focuses on the heat-power-hydrogen microgrid scheduling, employing stochastic MILP modeling. Results show a 52% reduction in ELNS, further decreasing with transmission line switching.
Keywords: Power system resilience; Microgrids; Transmission switching; Heat-power-hydrogen microgrids
JCR Impact Factor and WoS quartile: 8,100 - Q1 (2023)
DOI reference:
https://doi.org/10.1016/j.ijhydene.2023.07.277
Published on paper: January 2024.
Published on-line: August 2023.
Citation:
A.R. Jordehi, S.A. Mansouri, M. Tostado-Véliz, A. Ahmarinejad, F. Jurado, Resilience-oriented placement of multi-carrier microgrids in power systems with switchable transmission lines. International Journal of Hydrogen Energy. Vol. 50, nº. Part B, pp. 175 - 185, January 2024. [Online: August 2023]
