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在汽轮机等动力系统的仿真中，容积环节的处理及其计算稳定性是一个普遍遇到的问题。该文论述了在一定情况下采用基于质量和能量守恒的压力和焓微分方程组作为容积环节仿真模型的必要性，并针对因个别小容积环节动态响应较快给系统仿真步长造成限制的问题，给出了一个由直接积分导出的仿真递推式。该算式能允许采用较大的步长对容积环节进行仿真运算。对某汽轮机系统的实际仿真结果表明，采用该算式处理这类容积环节的仿真计算，能有效地避免因小容积动态响应快而造成计算结果的不稳定。图３参３
In the simulation of steam turbine and other power systems, the handling of volume and its computational stability is a common problem. This paper discusses the necessity of using pressure and enthalpy differential equations based on conservation of mass and energy as simulation models for volumetric links under certain conditions. In addition, aiming at the limitation of the system simulation step due to the fast dynamic response of individual small-volume links , A simulation recursion derived from direct integral is given. The formula can allow larger steps to simulate the volume of the link. The actual simulation results of a steam turbine system show that using this formula to deal with the simulation of such volumetric links can effectively avoid the instability of calculation results caused by the fast response of small volume dynamic. Figure 3 Reference 3