Experimental study of the path characteristics of partial discharge pulses in generator stator windings and in the SSC

The propagation characteristics of partial discharge pulses in generator stator windings and sensors were analyzed based on the coupling characteristics between the stator slot coupler(SSC) and the winding bar using the partial element equivalent circuit(PEEC) method.The frequency characteristics of a single coil-end,a single coil,a phase winding and the coupling effects between two windings were analyzed in a series of experimental tests.The different temporal pulse coupling effects of the SSC placed at different bars in the phase winding were also investigated.The experimental results can guide the analysis of the partial discharge characteristics in stator windings.