The authors present a method of modeling pantograph cooperation with a catenary system by means of a computer program based on a pantograph discrete model with two degrees of freedom and a catenary system model as a focused mass that in the dynamic state has variable stiffness along the span. After performing the appropriate tests, the validation was carried out according to the proposed method in the PN EN 50318:2019-02 standard required in the Technical Specifications for the interoperability of the subsystem “Energy” and “Rolling stock -locomotives and passenger rolling stock” of the trans-European rail system in Europe.
Th e system of supplying railway traction vehicles with electricity is carried out through direct contact of the contact wires with contact strips of the pantograph of the locomotive. Since 2011 in Poland, in accordance with the interoperability specifi cation of the TSI LOC & PAS, the previously used copper contact strips have been prohibited and the use of carbon contact strips has been forced. Due to the lack of domestic solutions dedicated to railway contact lines powered with DC 3 kV, foreign solutions were adopted. In order for the contact strips to be used in Polish railway lines managed by PKP PLK S.A, they must meet a number of requirements regarding their operational properties. Th e fi rst part of the article presents research on the new generation of carbon contact strips manufactured by Carbo-Graf in accordance with EN 50405:2006, which is specifi ed in TSI LOC & PAS.
Along with the continuous expansion and modernization of railway lines in Poland, there is a need for new solutions designed to transfer electricity in the traction contact lines. One of the key elements of the electricity transfer from the traction contact lines to locomotives is the carbon contact strip. In Poland until 2011, contact strips made of copper were used which caused much faster wear of contact wires. Th e order to use carbon contact strips, due to the lack of domestic solutions, meant that foreign solutions in this area were adopted. Due to the type of Polish railway lines, which are supplied with 3 kV DC, adapted contact strips show a number of problems during operation in traction lines in Poland. Th is article is the second part of the study of the new generation of contact strips and has been focused on the research of exploitation properties that enable their use in railway lines managed by PKP PLK S.A., namely the President of UTK List.
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