Method of diagnosing deterioration of insulating paper in oil-fi

Details Method of diagnosing deterioration of insulating paper in oil-fi Method of diagnosing deterioration of insulating paper in oil-fi

1992-01-10

1994-05-10

Noland, Tom

Measuring and testing

Instrument mechanism or transmission

Rate of change

738659, G01N 3334, G01M 1900

Patent

active

053097769

ABSTRACT:
In a method of diagnosing the deterioration of the insulating paper in an oil-filled electric apparatus, the total amount of furfural is determined by adding the amount of furfural adsorbed on the insulating paper to the amount of furfural dissolved in insulating oil in an oil-filled electric apparatus, and the deterioration of the insulating paper is diagnosed by the correlation between the total amount of furfural determined and the polymerization degree of the insulating paper, which indicates the degree of deterioration thereof. The method thus permits the precise diagnosis of the deterioration of the insulating paper.

REFERENCES:
Cigre Study Committee 15-WG 01, Paris 1986, "Monitoring of Power Transformers by HPLC Analysis"; F. Serena; 9 pages.
IEE Proceedings, vol. 132, Pt. C., No. 6, Nov. 1985; D. H. Schroff et al, pp. 312-319.
12-09 "Recent Developments by CEGB to Improve the Prediction and Monitoring of Transformer Performance", 1984; P. J. Burton et al. pp. 1-10.
CA 104(20): 171 250 b 1992 copyright ACC, English Abstract of Japan 60-235059.

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