Paper Conference

Proceedings of Building Simulation 2011: 12th Conference of IBPSA


Integrated dynamic electric and thermal simulations for a residential neighborhood: Sensitivity to time resolution of boundary conditions

Ruben Baetens, Coninck Roel De, Lieve Helsen

Abstract: The sensitivity to time resolution of boundary conditions is studied for dynamic integrated simulation of thermal and electrical networks of a net zero energy residential neighborhood. Main energy demands originate from domestic electricity consumption of appliances and an electricity driven heat pump for space heating and domestic hot water production, whereas local energy supply is provided by building integrated photovoltaic (BIPV) systems. Large simultaneity of net power supply at building level within a residential district results in strong underestimation of grid over-voltages for hourly irradiance data. The use of minutely meteorological data is critical for assessment of power losses due to inverter switch-offs caused by grid voltage increases. On the demand side, the main deviation is found in a possible correlation of heat pump power demands for SH or DHW but not in the stochastic nature of domestic electricity consumption. Here, sub-hourly demand profiles are less critical if they are not used in grid balancing control strategies at building level.
Pages: 1745 - 1752