In modern electrified railways, the catenary constructed along the railroad is used to power the electric train through the sliding contact with a pantograph. The current collection quality of the electric train is dominated by the mechanical interaction performance between the contact wire and the pantograph collectors. The current numerical models are primarily used in the design phase to reproduce the ideal response of a perfect system. Nowadays, with the emerging concept of the ‘digital twin’, the numerical models are desirable to describe the degradation in long-term service, which can provide the possibility to reproduce a realistic behavior and predict the evolvement of performance. To achieve this goal, we performed two field tests on the Gardemobanen line in Norwegian Network to obtain the static and dynamic parameters of a realistic catenary. The modification of the current numerical model using the field test data is discussed. Some comparative results against the inspection data will be introduced.