A Lumped-Capacitance Model for the Assessment of Energy Flexibility in different Building Typologies

Decentral flexibilities in the energy system are recently becoming more important due to the increase of renewable energy based power generation. Households account for a high share of the overall energy consumption and therefore are very important for a successful energy system transformation. This paper presents a new lumped-capacitance building model consisting of 31 thermal resistances and 6 capacitances. The building model is integrated in a model predictive control that optimizes the energy consumption profiles based on a mixed integer linear program. This approach requires a model being simplified enough to run within a minimum computational time and yet sufficiently accurate for the model-predictive control. The results prove the model to be well suited for fast simulations that can still represent essential characteristics of different residential buildings.