Evaluation of Water Heaters Control Strategies For Electricity Storage And Load Shedding At National Scale

Abstract : The objective of this study is to assess the impact of storage and cutoff scenarios on electric water heaters at national scale. It provides directions for future optimization on the French electric load curve. Thanks to accurate modellings of drop-off scenarios, it is possible to simulate hundreds of hot water tanks which represent a country's stock. The model of water heaters is adequate for an accurate assessment of domestic hot water (DHW) parameters-draw-off temperature, end user comfort and the influence of the temperature sensor controlling on/off sequences-, while reducing the computation time. The electrical water heaters (EWH) are parameterized using long-term sales statistics combined with a water drop-off time of use survey to represent the national diversity. Within the scope of reducing the power demand and maintaining the comfort of the consumers or, on the contrary, storing the maximum energy possible during a certain period of the day; we simulate-with a representative panel of EWH-two scenarios which consist in: Turning the EWH on to increase national electric demand for a short time, Cutting the EWH off to reduce national electricity demand for a short time.
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Baptiste Béjannin, Thomas Berthou, Bruno Duplessis, Dominique Marchio. Evaluation of Water Heaters Control Strategies For Electricity Storage And Load Shedding At National Scale. 4th Building Simulation and Optimization Conference, Cambridge, UK, Sep 2018, Cambridge, UK, United Kingdom. ⟨hal-01981401⟩

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