Optimal sizing design of renewable energy system integrated in a microgrid

CHEBABHI, ARDJOUNA (2025) Optimal sizing design of renewable energy system integrated in a microgrid. Doctoral thesis, Faculté des Sciences et de la technologie.

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Abstract

This thesis addresses the issue of optimal sizing for a renewable energy system in a microgrid, providing a comprehensive analysis based on economic and technical aspects using multiple criteria and indicators. The study focuses on financial evaluation, considering that a renewable energy system in microgrids represents an economic project that requires a thorough feasibility econom and a comprehensive investment assessment. To develop an optimal sizing design, the research introduces the main challenges associated with this process, particularly the uncertainty resulting from measurement and calculation errors or the variable nature of renewable energy systems. This issue is addressed using several methods, including sensitivity analysis, Monte Carlo simulation, and stochastic modeling to predict future values and trends under uncertain conditions across different criteria. These methods contribute to building an effective long-term sizing approach. Additionally, the thesis provides a comprehensive evaluation of system performance in terms of energy produc�tion, costs, and expected profits through a case study involving three different energy systems in microgrids within the Biskra region. The findings indicate that the proposed approach effectively achieves optimal sizing for these systems from both economic and energy perspectives. Consequently, it enhances system efficiency in the long term, attracts investors to this sector, and fosters trust in renewable energy projects.

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