Diagnosis of Overhead Contact Line by Measuring the Behavior of Pantograph for Current Collection


Hiromichi NAKANISHI, Tetsurou TAKAHASHI, Hiroki NAGASAWA
Hard spots of overhead contact line are diagnosed by electric inspection cars on the narrow gage line in JR Group. But frequency of diagnosis is only 2 or 3 times per year. A more frequent diagnosis of contact line such as done by pantograph for current collection on a commercial car is desirable. So a field test was carried out using a pantograph equipped with sensors for current collection on electric inspection cars. Thus it found the possibility of detecting undulatory wear in acceleration of pantograph bow was confirmed. Similar diagnosing is conceivable with the Shinkansen. Then a field test was carried out on electric inspection cars for Shinkansen and it was found also possible to do similar pantograph measurement and there by to do similar diagnosis.