Diagnosis of dynamic characteristics of railway catenary using contact force measurements

초록

Contact force measurement is well established for the evaluation of current collection quality. Contact force measurement is being expanded to the diagnosis of railway catenary. However, the previous studies concentrated on the detection of irregularities of railway catenary. For systematic diagnosis of railway catenary, we need to perform diagnosis studies in various levels. In this paper, we present how to diagnose the global dynamic characteristics of railway catenary, using contact force measurement. Based on contact force measurements, we presented 1/2 sub-resonance speed and resonance speed for Korean high-speed railway catenary. We also showed that the influence of initial configuration of railway catenary on the dynamics of pantograph-railway catenary can be evaluated experimentally. Conclusively, the dynamic characteristics as well as the local irregularities of railway catenary can be diagnosed, using contact force measurement.