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丹麦国家铁路于1973年开始在哥本哈根和埃尔西诺之间的东海岸线上采用电传动内燃机车实施固定的推拉式列车运输作业。列车内部的控制系统以双线传输系统(贯穿于整个列车)为基础。应用数字技术进行列车信息传递。这种推拉式作业方式逐渐扩大,现在己包括西兰岛上的全部线路。该文论述选择三相传动机车的原因、在推拉式运输作业中所获得的经验以及三相交流传动内燃机车与传统的电传动内燃机车在维修制度和维修费用方面的比较。
The Danish National Railways started the fixed push-pull train operation on electrically driven diesel locomotives on the east coast between Copenhagen and Elsinore in 1973. The control system inside the train is based on a two-wire transmission system that runs through the entire train. Application of digital technology for train information transfer. This push-pull operation has gradually expanded and now includes all the routes on Zealand. This article discusses the reasons for choosing three-phase locomotives, the experience gained during push-pull transport operations, and the comparison of maintenance systems and maintenance costs between three-phase AC diesel locomotives and conventional electrically driven locomotives.