Development of a model for physical and economical optimization of distributed PV systems
There are a number of factors that influence both the physical and the economical performance of a photovoltaic solar energy (PV) installation. The aim of this project was to develop a simulation and optimization model with which these factors could be analyzed and the PV installation optimized. By supplying the model with meteorological data, electricity consumption data and available building surfaces the model finds the optimum PV installation. The output consists of both physical and economical performance as well as information on how to distribute and install the PV modules on the available building surfaces. The model was validated using annual and hourly measurement data from Swedish PV installations. The validation shows that the model is a reliable tool for simulating the electricity generation from a PV system. In the second part of the project the model was used to evaluate the PV potential at two different hospitals and one health care center within the Uppsala County, Sweden. The model was also used to study the effect of different house orientations on the PV potential in Swedish neighborhoods. The physical and economical PV potentials are high for the hospitals and the health carecenter. This is mainly due to a high electricity demand but also due to a good match between the load profile and the PV electricity generation profile. The study on different neighborhoods shows that for gable roof buildings it might be more favorable to plan the houses so that the roofs face east-west rather than north-south.
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