In thermodynamic performance simulation of power systems, when a model contains some small volumes with large flows, very small time step must be used to get convergent results.

• 摘要针对热力系统仿真中出现的大流量流经小容积环节而使系统的积分步长受到限制，提出了一种处理小容积环节压力流量微分方程的新方法。