Deterioration diagnosis method and device of electrical machine

Details Deterioration diagnosis method and device of electrical machine Deterioration diagnosis method and device of electrical machine

1997-06-26

1998-06-30

Pham, Hoa Q.

Optics: measuring and testing

For light transmission or absorption

356433, G01N 2100

Patent

active

057742286

ABSTRACT:
In order to diagnose non-distructively the deterioration degree of such as insulation oil and insulation paper during operation of an oil filled electrical machine and apparatus without stopping the operation thereof, a deterioration degree disgnosis method for the oil filled electrical machine and apparatus makes use of optical fibers (6, 7) and oil immersed probe (5) and diagnoses the deterioration degree of an insulation paper non-distructively based on reflection absorbance difference between those for any two wavelengths of the insulation paper.

REFERENCES:
patent: 5151590 (1992-09-01), Takamoto et al.
Polymer Engineering and Science, Feb. 1996, vol. 36, No. 4, "Nondestructive Diagnosis of Thermal Aging for Opaque Epoxy Resin by Optical Reflective Analysis", Y. Takazawa et al, pp. 587-591.

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