Propagation of Partial Discharge and Noise Pulses in Turbine Generators

Published Sep 1st, 1986 IEEE Transactions on Energy Conversion, September 1986 - M. Henriksen, G. Stone

Abstract: Changes with time in the partial discharge(PD) activity originating in a generator stator’s insulation system provide information about the electrical integrity of the stator winding. It is desirable to measure PD during normal service to minimize costs. To do this successfully, the influence of electrical interference must be reduced. Tests are reported which characterize the nature of discharge and noise pulses when using capacitive couplers mounted on each of the phase leads and an RF current transformer mounted on the neutral lead for signal detection. Significant differences between PD and electrical noise have been observed.


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