EXPERIMENTAL VALIDATION OF NUMERICAL RESULTS CORESPONDING TO CATENARY CONTACT WIRE TEMPERATURE
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
In this paper are presented the numerical 2D, 3D and experimental results obtained for catenary contact wire heating in alternative current. 2D numerical simulations were made in QuickField Professional and 3D in ProEngineer. We made numerical simulation not considering the resistivity variation with temperature. For 2D numerical determination of temperature values in alternative current we solved a coupled problem magnetic – thermal field. The source term necessary for 3D problem was obtained by solving a magnetic 2D problem. It was calculating the relative error by comparing numerical 2D, 3D and experimental results. The paper present also experimental results obtained by heating contact wire in alternative current. We use a contact wire type TF 100, 100 mm2 section, coresponding to Romanian Railways catenary. For contact wire temperature determination were considered different values coresponding to electrical current (201 A, 250 A, 301 A, 350 A, 403 A, A.C.). Analysing the results we can observed that it is a small error in case of 3D numerical results comparative with 2D. The error increase with electrical current values increasing. Until to 301 A electrical current values, the errors were smalls (mean value 2,39 % in case of 2D and 1,91% in case of 3D).
Authors and Affiliations
Constantin-Florin OCOLEANU, Gheorghe MANOLEA, Ioan POPA
Keywords
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