FAST SIMULATION ALGORITHM FOR PV SELF-CONSUMPTION WITH HEAT PUMP SYSTEMS: CALIBRATION METHODOLOGY WITH COMPREHENSIVE DYNAMIC SIMULATION MODEL AS REFERENCE

摘要

Self-sufficiency of systems with photovoltaic (PV) energy production gets more and more important. Demand side management with the use of heat pump and thermal energy storage has proven to be an efficient and effective means for increasing the PV self-consumption ratio. Accurate prediction of the self-consumption and the resulting self-sufficiency quota requires a comprehensive simulation including heat pump characteristics, thermal balance of the building and hot water demand profiles. These simulations are usually elaborate and time consuming. This work presents a fast but reliable estimate of the system's PV self-consumption potential. It is based on the well-known tool Sunny Design, which has been extended by the capability to calculate the building and hot water energy demand, and applying heat pump model with realistic characteristic curves. The proposed algorithm is capable of including battery storage and advanced controllers as future extensions. The algorithm is in accordance with the physics-based simulation tool Polysun which includes device physics as well as controller details with a tight coupling between the electrical and the thermal part of the system. The newly introduced model parameters in Sunny Design are calibrated and validated with the detailed Polysun model.