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2 Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje

2 2007

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Joint uhf/ae method of partial discharges detection and identification.

Sikorski W., Staniek P., Walczak K.

Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje

2007

Vol. 46, nr 19

52-57

A joint UHF/AE method for PD detection and identification in HV equipment was described in the paper. Authors presented an defect identification method on the basis of measured AE and UHF signal analysis. The result of investigation done on test transformer with paper-oil insulation was presented as an example of use of the elaborated method.

Influence of oil parameters and pressboard mass density o dielectric response of oil-paper insulating

Gielniak J., Walczak K.

Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje

2007

Vol. 46, nr 19

118-121

The first part of the article presents dielectric response in frequency domain of aged oil-paper samples. Then, the samples were vacuum dried and the aged oil was extracted from the paper. In the end the dried paper was impregnated by new and dry oil. In each mentioned stage of investigation the dielectric response and moisture content in paper were measured. In the second part of the article the influence of mass density of moistured and impregnated pressboard samples on their dielectric response was discussed.