Smart energy management based on non-intrusive load monitoring
Artificial Intelligence for Smart Energy Management within Energy Transition

In Non-Intrusive Load Monitoring (NILM), the whole-house building load signal (data) is acquired from the main electrical panel outside the building or the residence, avoiding the need for any additional installation inside the user’s property. The NILM approach can be formulated as follows. Let S (t ) be the aggregated power signal from the active appliances at the entry point of the meter at time t. Let S_i  (t ), i = 1, ..., n, be the power consumption of individual appliances contributing to the aggregated power S (t ) and n is the total number of active appliances within the time period t. S (t ) can be defined as: