Modeling and estimation of transient current signals

In this paper, we propose a nonstationary model for transient electrical current signals based on the physical behavior of electrical appliances during their turn-on. This model takes into account the nonstationarity of those transient signals and the special form of their envelope. We also propose an algorithm for the estimation of this model´s parameters and we evaluate its performance on synthetic and real signals. The measured transient current signals actually reflect the physical phenomena appearing in the electrical appliances when turning on, and therefore, the model estimates of these transient current signals are useful for characterizing electrical appliances and can be helpful for distinguishing appliances in addition to the use of their steady-state power consumption.