The integration of battery energy storage systems into isolated microgrids plays a critical role in increasing renewable energy penetration and reducing dependence on diesel generation. In many existing energy dispatch models, the auxiliary loads associated with BESS, such as control systems, power electronics, and thermal management, are often simplified or overlooked. As a result, system performance assessments may not accurately reflect real operating conditions.
This thesis presents a real time analysis of auxiliary loads within an energy storage system connected to an isolated microgrid. A detailed auxiliary consumption model is developed based on BESS operating conditions, including charge and discharge rates, heat generation, and thermal constraints. The proposed model is then integrated into a hybrid energy flow dispatch framework to evaluate its impact on overall microgrid operation.
The methodology is applied to several isolated communities in Nunavik using microgrid data such as electrical demand, ambient temperature, and energy production, together with an energy flow dispatch model developed by HATCH. The results demonstrate that explicitly modeling auxiliary loads influences energy distribution, renewable energy penetration levels, and the optimal sizing of storage systems. This work highlights the importance of realistic auxiliary load modeling to improve performance assessment and support informed decision making for BESS deployment in isolated microgrids.
| Date | 22 Apr 2026 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Daniel Rousse (Supervisor) |
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Heissel, A. (Author),
Rousse (Supervisor),
22 Apr 2026Student thesis: Master's thesis › Master in Engineering: Mechanical Engineering