Motor corona discharge positioning method

The invention discloses a motor corona discharge positioning method, which belongs to the technical field of corona discharge on-line monitoring, and comprises the following steps: 1, dividing a stator winding into a plurality of independent monitoring intervals; 2, monitoring through a corona discharge monitoring sensor; 3, inputting the phase type and position of the stator bar in each independent monitoring section; 4, after corona monitoring signals are measured, according to phase time sequence analysis, determining the phase type to which a stator bar of corona discharge in each independent monitoring interval belongs, and judging the phase of a discharge area in the independent monitoring interval; and step 5, reading measurement data of the corona discharge monitoring sensor, performing time sequence extraction, performing time sequence information comparison, and completing corona discharge positioning according to a diagnosis result. According to the method, after the corona monitoring signal is mea