This allows our weather engine to quickly and easily provide the weather data that you need for any project worldwide. The Visual Crossing global weather database provides easy access to decades of historical weather data, model-based 15-day forecasts, and long-range weather patterns based on statistical climate modeling. For achieving higher system performance by using a MPC instead of a rule-based control strategy like PVC the, forecasting quality has to be as accurate as possible.Access to global historical weather & forecast data
Even a MPC with low-quality weather forecast data can achieve higher system performance as a simple rule-based HC strategy. Thus, the PV self-consumption is reduced for high-quality and low-quality weather forecasts by 4.6 % and 11.1 %, respectively, compared to a perfect MPC.
The accurately the weather forecasting quality is in general the higher the performance of the HP heating system. Compared to a standard rule-based HC strategy the PV self-consumption can be increased by using a PVC and MPC strategy by 6.2 % and 38.9 %, respectively. In addition and as a validation process, all scenarios are simulated and compared to the measurement results. In order to evaluate the benefits in real operation compared to rule-based controllers, a heat-controlled (HC) and a PV self-consumption optimized controller (PVC) are also operated on the test bench. Therefore, the operation of a MPC strategy is carried out for a perfect forecast compared to two imperfect forecast scenarios over a consecutive period of 4 days on a Hardware-in-the-Loop test bench with a geothermal heat pump and a thermal energy storage system. In this study, the impact of the weather forecast quality on a realistic heat pump heating system is investigated in experiments and simulations.
Several sources of weather forecast data are available with variable forecasting quality.
For such a controller, weather forecast data are mandatory to perform the optimization. To fully exploit this flexibility and financial potential, smart predictive control strategies such as Model Predictive Control (MPC) are needed. Model predictive control, weather forecast, self-consumption, experimental study AbstractĮlectrically driven heat pumps offer in combination with thermal energy storage systems the potential to response to fluctuating renewable energy sources, e.g. Energy Efficient Building Systems| Institute of Energy and Building (ieg) | Technische Hochschule Nürnberg Georg Simon Ohm| Germany
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