Abstract
On Sanyo-Shinkansen, the pantograph erosion has been occurring since before, therefore we had taken the measure of the notch control in all sections between Shin-Osaka and Hakata. In consequence, we usually had delay time. In order to reduce delay time by the frost while suppress the number of the pantograph erosion, we analyzed the section that arc discharge generated by the frost and we optimized the notch control. We used emergency ground switch camera installed since Shinkansen series N700, and developed a video recording apparatus which can record all the time to detect the state of the arc generation during the train running. We analyzed using the special sheet which was made to examine the correlations with the state of the arc generation and the various data. For the arc generation, we classified into four categories with the arc intensity. As a result of the analyzing, we examined the optimization of conditions of the notch control and the section of the notch control. By evaluation of the weather sensors, we newly placed a portion of anemometer to observe accurate wind velocity in the arc generating area. For the more reduction of delay time, we considered the notch operation suiting the train speed and we understood we could allow two levels of the notch operation according to the speed. As a result of these approaches, we optimized the notch control conditions and these sections, and reduced the delay time while suppress the number of the pantograph erosion.
