Patent Document ID: 7933724
Application ID: 11297842
Patent Flag: 1

Claim One:
1. A method of tracking the performance of an industrial appliance in which, in a learning phase, over a reference period, said method comprising: a) calibrating a model for providing an estimate of the an electrical power consumption based on the values of a set of operating parameters of the industrial appliance; b) calibrating the distribution of a random variable representing overconsumption, wherein said overconsumption variable comprises the difference between the a measured electrical power consumption by the industrial appliance and the estimated value based on the model; and c) performing in a real-time tracking phase: i) measuring a set of operating parameters of the industrial appliance, and the electrical power consumed by the industrial appliance, ii) calculating an estimate of the quantity representing the electrical power consumed is calculated, in real-time, using the model, based on the values of the set of operating parameters of the industrial appliance, iii) calculating the overconsumption value by taking the difference between the measured value of the electrical power consumed and the estimated value provided by the model, iv) calculating an overconsumption indicator based on a statistical test on the overconsumption variable, using the distribution of said overconsumption variable, thereby deducing an overconsumption score corresponding to a probability of overconsumption and thereby constituting an overconsumption indicator, v) triggering an alarm if the probability of overconsumption exceeds a given overconsumption probability threshold, wherein, in the real-time tracking phase, an invalidity indicator is calculated, representing the probability of validity or invalidity of the model, based on the values of the set of the operating parameters of the industrial appliance, the invalidity indicator being calculated from a score for which the determination means are calibrated in a learning phase over a reference period.