Monitoring of Overhead Contact Line Based on Contact Force

Large contact force fluctuations between contact wires and pantographs cause unstable current collection conditions, therefore, it is important to measure and estimate the contact force to obtain a better knowledge of current collection quality. Contact force waveforms are affected by the condition of equipment used on overhead contact lines, therefore, it is anticipated that the contact force waveform represent improvable points of the overhead contact line. This paper describes the characteristics of contact force waveform against the static height of contact wires at Shinkansen and their applications in overhead line diagnosis