Colloquia

Summary

Energy transition plays a crucial role in mitigating climate change. A key element in the energy transition is to integrate distributed renewable energy resources (DERs) into the existing energy systems, however, large-scale integration can pose several challenges to the current energy system such as grid congestion. Energy Management Systems (EMSs) can help to mitigate this problem by increasing on-site self-consumption of renewable energy sources and shaving the peak-load using the flexibility of loads and storage. This master’s thesis presents the development of a Home Energy Management System (HEMS) designed to enhance the performance of a Photovoltaic (PV) system with a Battery Energy Storage System (BESS). The HEMS helps to achieve higher self-sufficiency ratios (SSR) and self-consumption ratios (SCR) while simultaneously reducing electricity costs by optimally scheduling shiftable appliances to operate during the most optimal times within a dynamic electricity pricing scenario. Different objectives were considered such as reducing costs and increasing the self-consumption of generated PV energy.  The results are presented through a comparative analysis of four scenarios for a typical detached single-family house (SFH) (i) without green technologies, (ii) with a PV system, (iii) with PV and BESS, and (iv) with PV, BESS, and HEMS. The results demonstrate that the implementation of a 4 kWp PV system increases the SSR to 26% and the SCR to 34.7%. Including a 6 kWh BESS to the existing PV system, the SSR and SCR rise to 51% and 45.8%, respectively. Additionally, the HEMS led to SSR and SCR improvements in the range of 7.6% to 19.8% and 9.4% to 19.4%, respectively.