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Theses

Intégration des prévisions solaires probabilistes dans le contrôle de systèmes énergétiques : application à un microréseau

Abstract : The issue of global warming has been on the political, scientific, economic and societal agenda for nearly thirty years. Many countries have committed to decarbonize their energy production in order to achieve security and sustainability of supply. In order to achieve these objectives, one of the first levers is to increase the penetration of intermittent renewable energies (solar, wind, wave) in the energy production mix. Intermittent renewable energies are abundant, but they are very fluctuating. Indeed, their production is generally very dependent on climatic hazards (clouds, wind, temperature). Because of this high variability, the massive integration of this type of energy in the electrical grids makes it difficult to maintain the balance between production and consumption. To achieve a massive integration of intermittent renewable energies in the grids, various solutions are considered. First, it is possible to adapt consumption to the production profile (load shifting). This demand management involves, for example, consuming as the sun goes by in the case of solar generation. Another possible solution is to oversize the production system and to clip the overproduction. Unfortunately, this solution alone does not guarantee continuous production when the resource is non-existent. The most common solution is the use of storage systems. It guarantees the adaptation of production to consumption. Indeed, the energy stored during moments of overproduction can be used later. Unlike storage, which is a costly solution, it is possible to anticipate fluctuations in production and consumption by using forecasts. Each of these solutions considered alone does not lead to a viable technical or economic response. It is therefore necessary to adopt a combination of these solutions in order to consider a massive integration of intermittent renewable energies into the electrical networks. In order to ensure a balance between production and consumption with a minimum operating cost, it is necessary to plan in advance the commitment of the production means (unit commitment). This planning is achieved through the technical and economic optimization of the future generation mix. It is therefore necessary to have reliable forecasts of consumption and production. As the generation of conventional production systems (thermal, nuclear, hydroelectric) is controllable, it is not really a question of forecasting, but of availability. On the other hand, as with consumption, the random nature of intermittent renewable energy production requires the use of forecasts. In this thesis, we propose to address the problem of using forecasts of intermittent renewable energy production in planning the operation of energy systems, such as storage, within a power system.
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https://hal.univ-reunion.fr/tel-03700692
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Submitted on : Tuesday, June 21, 2022 - 1:16:45 PM
Last modification on : Wednesday, June 22, 2022 - 3:15:51 AM

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  • HAL Id : tel-03700692, version 1

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Faly H Ramahatana. Intégration des prévisions solaires probabilistes dans le contrôle de systèmes énergétiques : application à un microréseau. Sciences de l'ingénieur [physics]. Université de La Réunion, 2021. Français. ⟨tel-03700692⟩

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