Determination of transition parameters from digital data

In this work, analytical expressions are obtained for calculating the current value of the constant component of the harmonic signal, the initial value of the aperiodic component of the transient process, and the current value of the decay time constant of the aperiodic component of the electrical signal based on processing the array of instantaneous values of voltages and currents of all three phases. The accuracy of determining the values of the constant and aperiodic signal components is estimated.