商用周波軌道回路の短絡感度計算モデルに関する考察

抄録

60Hz track circuits have been used for DC electrified conventional lines of Japan Railway. The train detection sensitivity of the track circuit is decided by its impedance and distribution. The model to calculate the train detection sensitivity is designed about 60 years ago and being applied still now. Nevertheless there are several occasion, where the model cannot be applied. For example, a short distance track circuit sometimes cannot be applied. To solve this problem, the author propose a new model and constants of the track circuit. The new type model and constant can be applied not only to the short distance track circuit, but also to a long distance track circuit including a turnout. With the help of a field measurement, the new model is proved that it can be applied all the kinds of 60Hz track circuits without any problems.