基于CAN总线和分布式结构的船舶电站多种发电方式仿真

Simulation on multiple power-generating approaches of marine power station based on CAN bus and distributed structure

为进行船舶电站仿真系统中多种发电方式联合运行的研究及管理、操作、训练,实现多个学员的同时教学和实操,克服集中型仿真系统缺点,对船舶电站多种发电方式联合运行仿真采用分布式结构,由下位机完成各自的柴油发电机组、轴带发电机组、透平发电机组的仿真,并由上位机实现电力管理,通过CAN总线通信实现多种发电方式联合运行.对CAN总线运行过程中偶尔出现通信失败的状况进行分析,从而改进CAN总线通信接口硬件/软件的设计,提高CAN总线性能,使其更好地运用于该仿真系统.结果表明该设计方法提高仿真设备的实时性、可靠性,改善系统性能.

To implement the study, management, operation and training of union operation of multiple power-generating approaches in marine power station simulation system, realize the teaching and operation for several students at the same time, and overcome the disadvantages of centralized simulation system, distributed structure is used to implement the simulation system for union operation of multiple power-generating approaches in marine power station. In this system, the simulation of diesel generators, shaft generators and exhaust-gas turbine generators is implemented in bottom machines, while the electric power is managed by upper machines. The union operation of multiple power-generating approaches is implemented by network communication based on CAN bus. Through the analysis on the network communication failures that occasionally happen in CAN bus, the hardware/software of CAN bus communication interfaces is designed more reasonably and the performance of CAN bus is improved. So the improvement makes CAN bus better applied in the simulation system. The results show that it enhances the real-time capability and reliability of the simulation equipment and the system performance is improved.