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.
Bibliographical noteCopyright: 1986 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
Henriksen, M., Stone, G. C., & Kurtz, M. (1986). Propagation of Partial Discharge and Noise Pulses in Turbine Generators. I E E E Transactions on Energy Conversion, EC-1(3), 161-166. https://doi.org/10.1109/TEC.1986.4765750