引入着色赋时Petri网(CTPN)分别建立了运煤专线列车在区间运行、车站联锁控制系统的仿真模型,并在此基础上建立了作业复杂的装卸车站的Petri网模型.对列车在闭塞区间运行建模解决了固定闭塞的闭塞占用表达问题.对车站系统进行建模的关键在于描述车站的联锁控制机制.给出“列车进路”的CTPN模型,并用Petri网描述了装车站的车站控制中心.最后利用Exspect软件搭建了仿真系统,为科学评价列车运行计划,优化列车调度指挥,对能力计算、利用和加强提供了工具平台.%Using colored-timed Petri net (CTPN), two simulation models are built for dedicated coal transportation line operation and station interlocking control system, and a Petri net model for the complex operations at loading and unloading stations is also given. In this paper, there are two key problems at issue. One is the description of occupancy of fixed blocks in block section modeling and simulation. The other is the uncertainty set of running time. The key to the modeling is describing the interlocking mechanism of the stations. The paper provides three CTPN models for the receiving track, arrival track and through track respectively and utilizes Petri net to describe the station control center of a loading station. Finally a simulation system is formulated using program Exspect, which can be used to evaluate station time table and optimize train trip schedule.
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