发电功率快速扰动时舰用蒸汽动力系统的动态特性仿真

Simulation of dynamic characteristics of marine steam power system under rapid power generation disturbance

    摘要
  • 摘要:
      目的  为保障船用蒸汽动力系统的安全稳定运行，需研究其在汽轮发电机组功率快速扰动工况下的动态响应特性。
      方法  建立蒸汽动力系统的整体仿真模型，针对汽轮发电机组功率单次快速扰动和连续快速扰动的操作条件，开展系统动态特性的仿真分析。
      结果  结果表明：在单次快速扰动条件下，主机进汽压力波动幅度不大于5%；在连续快速扰动条件下，主机进汽压力波动幅度不大于为7%。这2种扰动条件下的螺旋桨转速波动幅度均不大于2%，可以满足系统的稳定供汽需求。
      结论  研究成果可为船用蒸汽动力系统的安全性设计提供参考。

     

    Abstract:
      Objectives  In order to ensure safe and stable operation of the marine steam power systems, it is necessary to study the dynamic response characteristics of the system under the rapid power generation disturbance of a turbo-generator set.
      Methods  An overall simulation model of a marine steam power system is established, and the simulation analysis of the dynamic characteristics of the system is carried out according to the operating conditions of single and continuous rapid disturbance of power generation.
      Results  The simulation results show that the steam intake pressure of the main engine fluctuates by no more than 5% under single rapid disturbance, and by by no more than 7% under continuous rapid disturbance, and the fluctuation of the propeller's revolution speed under the two disturbance conditions is not more than 2%, which can meet the stable steam supply demand of the system.
      Conclusions  The results of this study can provide references for the safety design of marine steam power systems.

     

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