Design and simulation of floating solar PV modules with ESS for grid network stabilization. Case study: Ntaruka hydropower plant

Abstract

This thesis aims to contribute to the shift to cleaner energy sources to improve grid stability in a northern network of Rwanda by exploring the design, modeling, and viability of integration of a 25MW Floating Solar system with 5MWh of Energy Storage System (ESS) that replaces the current 10MW fossil fuelbased generation at Mukungwa Hydropower Plant operated by Independent Power Producer (IPP) namely” SoEnergy Ltd” with a combination of renewable resources, ultimately fostering a more resilient and sustainable energy infrastructure that will create an ecosystem-based adaptation (EbA) at Ruhondo lake including URUGEZI Wetland. The floating solar PV system together with an existing 10.5MW Ntaruka hydropower station is intended to improve grid stability and reduce CO2 emissions from fossil fuel plants. The thesis addresses grid instability by designing and simulating floating photovoltaic modules connected to Energy Storage System (ESS), addressing voltage and frequency fluctuations caused by imbalanced energy demand. This study enhances grid network stabilization by designing and simulating floating solar PV modules with ESS using advanced programs like Homer, MATLAB, PVsyst, and SolidWorks, focusing on design aspects. In conclusion, this study proposes a comprehensive approach to enhance grid stability in the era of renewable energy, utilizing SolidWorks, Homer, MATLAB, and PVsyst to address design, energy storage, dynamic system behavior, and real-world performance modeling