Partial discharge monitoring apparatus and partial discharge...

Details Partial discharge monitoring apparatus and partial discharge... Partial discharge monitoring apparatus and partial discharge...

2007-01-16

2007-01-16

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Remote supervisory monitoring

C324S701000

Reexamination Certificate

active

10918491

ABSTRACT:
A partial discharge monitoring apparatus for a rotating electric machine includes a partial discharge detecting circuit which measures each signal output from a partial discharge sensor located in the rotating electric machine simultaneously in a first frequency band and a second frequency band. Detection time for detecting each signal includes a peak hold time and a dead time, which comes after the peak hold time. A next-occurring signal is detected after the dead time has elapsed.

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patent: 2002/0097065 (2002-07-01), Krahn et al.
patent: 2002-71742 (2002-03-01), None
Campbell, S.R., et al.; “Practical On-Line Partial Discharge Tests For Turbine Generators and Motors”,IEEE Transactions on Energy Conversion,vol. 9, No. 2, pp. 281-287, (Jun. 1994).
Stone, Greg C., et al.; “Application of Partial Discharge Testing to Motor and Generator Stator Winding Maintenance”,IEEE Transactions on Industry Appl.,vol. 32, No. 2, pp. 459-464, (Mar./Apr. 1996).

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