Optimal management of a microgrid Li-Ion battery considering non-linear losses using the Integer Zig-Zag formulation

J. García-González, S. Guerrero

Electric Power Systems Research Vol. 235, pp. 110776-1 - 110776-8

Resumen:

This paper presents a model for optimizing the management of a Li-Ion battery in a microgrid, considering the presence of nonlinear losses during the charging and discharging processes. The paper examines the nature of these losses and proposes updated nonlinear expressions that depend on the state of charge and on the charging or discharging power. The piecewise linear approximations of the losses bivariate functions are implemented using the novel integer zig-zag (ZZI) formulation. The corresponding ZZI constraints are integrated into an optimization model to determine the optimal schedule for a residential isolated microgrid comprising a solar panel, a diesel generator, and a Li-Ion battery. The case study compares different triangulation strategies regarding their impact on the quality of the obtained solution and the computational burden.

Resumen divulgativo:

Este artículo propone un modelo para optimizar la gestión de baterías de Li-Ion en una microred formada por un panel solar, una batería y un generador diesel, considerando pérdidas no lineales en los procesos carga y descarga. Se utiliza la novedosa formulación zig-zag con variables enteras (ZZI).

Palabras Clave: Energy management system; Microgrid; Non-linear losses; Steady-state; Zig-zag

Índice de impacto JCR y cuartil WoS: 3,900 - Q2 (2022)

Referencia DOI: https://doi.org/10.1016/j.epsr.2024.110776

Publicado en papel: Octubre 2024.

Publicado on-line: Junio 2024.

Cita:
J. García-González, S. Guerrero, Optimal management of a microgrid Li-Ion battery considering non-linear losses using the Integer Zig-Zag formulation. Electric Power Systems Research. Vol. 235, pp. 110776-1 - 110776-8, Octubre 2024. [Online: Junio 2024]