A method for locating partial discharges occurring at a discharge site in an electric apparatus with elongate geometry, said partial discharges generating corresponding electric pulses propagating in opposite directions along the apparatus from the discharge site when the electrical apparatus is subject to electrical voltage, characterized in that it comprises the following steps: - detecting the pulses picked up by a first and a second sensor (5, 7), operatively connected to the apparatus in a first and a second detecting station (6, 8) which are spaced out along the apparatus, and providing corresponding electric signals representative of the waveform of the pulses; - deriving, for each of the signals, at least one shape parameter correlated with the waveform of the corresponding pulse; - assigning to said signals values of a phase parameter representative of the phase of said voltage applied to the electrical apparatus at the instant the signal is detected; - deriving, for said signals, at least one amplitude parameter correlated with the amplitude of the corresponding pulse; - separating the sets of signals detected in each detecting station into respective subsets, so that the signals of each subset have similar shape parameter values; - identifying the subsets of signals relating to partial discharges and classifying them according to statistical processes based on the values of the amplitude and phase parameters for the signals of each subset considered individually; - correlating the subsets of signals detected in the first and second detecting stations and similarly classified, within the subsets identified as relating to partial discharges, in order to derive a pair of subsets of signals relating to pulses generated at the same discharge site; - selecting, for the pair of correlated subsets, at least one pair of homologous pulses detected in the first and second sensors (5, 7), respectively, in the same time interval which is less than a predetermined value; - calculating the distance, along the apparatus, between the discharge site and the detecting stations (6, 8), based on the selected pair of homologous pulses. - detecting the pulses picked up by a first and a second sensor (5, 7), operatively connected to the apparatus in a first and a second detecting station (6, 8) which are spaced out along the apparatus, and providing corresponding electric signals representative of the waveform of the pulses; - deriving, for each of the signals, at least one shape parameter correlated with the waveform of the corresponding pulse; - assigning to said signals values of a phase parameter representative of the phase of said voltage applied to the electrical apparatus at the instant the signal is detected; - deriving, for said signals, at least one amplitude parameter correlated with the amplitude of the corresponding pulse; - separating the sets of signals detected in each detecting station into respective subsets, so that the signals of each subset have similar shape parameter values; - identifying the subsets of signals relating to partial discharges and classifying them according to statistical processes based on the values of the amplitude and phase parameters for the signals of each subset considered individually; - correlating the subsets of signals detected in the first and second detecting stations and similarly classified, within the subsets identified as relating to partial discharges, in order to derive a pair of subsets of signals relating to pulses generated at the same discharge site; - selecting, for the pair of correlated subsets, at least one pair of homologous pulses detected in the first and second sensors (5, 7), respectively, in the same time interval which is less than a predetermined value; - calculating the distance, along the apparatus, between the discharge site and the detecting stations (6, 8), based on the selected pair of homologous pulses.