Application of Duhamel's theorem in the thermal field analysis of a DC cable with two layers of insulation

• Autorzy: Gołębiowski J. , Zaręba M.
• Języki publikacji: EN

Abstrakty

EN

In the paper we presented an asymptotic method of determination of the transient thermal field in a three-zone cable (i.e. in a core and in two layers of insulation). A basis of our method was decomposition of the system. We considered separately the region of the core, which we modeled by a concentrated element of the first order. In turn, we treated the two-zone region of insulation as the system of distributed parameters. In the analysis we applied Duhamel's theorem and the method of separation of variables. Eigenvalues of the boundary-initial problem and coefficients of eigenfunctions we determined numerically. In the result we obtained spatial-temporal heat-up curves of the investigated cable. Our results we presented in a graphic form.

Słowa kluczowe

EN

analytical-numerical methods of the field theory; transient heat flow; current transmission

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2009
• Tom: Vol. 57, nr 1
• Strony: 87--94
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Gołębiowski J.

autor

Zaręba M.

• Division for Theoretical Electrotechnics, Technical University of Bialystok, 45D Wiejska St., 15-351 Białystok, Poland,

Bibliografia

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