Energy disaggregation using a single voltage sensor

Continuous and detailed energy monitoring is essential to ensure the energy efficient operation of complex systems, for instance, buildings. Energy efficiency is becoming a relevant topic in the last years because of the growing concerns on sustainability and the will of reducing the energetic costs. The idea behind this Master’s thesis is a novel energy monitoring solution that with a single sensor enables the monitoring of energy consumption per each single device in an electrical group.The proposed method enables an extremely simple energy monitoring since it does not require monitoring the overall current. All other existing methods need to have access to the electrical current to estimate correctly the power consumption of the different devices. The current meter has to be clamped around a wire inside the electrical cabinet and its installation is a non-trivial task. The main advantage of this novel method is that the unit of sensing can be installed by any user in any socket. Our method monitors only the voltage signal and maps the voltage variations to the power jumps caused by the different devices