计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (7): 233-235.

• 工程与应用 • 上一篇    下一篇

基于自适应步长的天然气管网动态仿真

梁炎明,郑 岗,刘 涵   

  1. 西安理工大学 自动化与信息工程学院,西安 710048
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-03-01 发布日期:2011-03-01

Dynamic simulation of natural gas network based on adaptive step

LIANG Yanming,ZHENG Gang,LIU Han   

  1. Xi’an University of Technology,Xi’an 710048,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-03-01 Published:2011-03-01

摘要: 根据天然气在管道内部流动缓慢时,压力变化小,反之压力变化大这一特点,提出一种步长依据流量值自适应调整的天然气管网动态仿真方法。该方法通过将管道各点的流量值与基准值进行比较来调整各点步长,然后采用直线法求解天然气流动的动态模型。实例仿真表明:自适应步长法在相同的计算精度下,相比固定步长法具有较高的计算速度。

关键词: 自适应步长, 天然气管网, 动态仿真, 基准值, 直线法

Abstract: It is a fact that when gas flows slowly in pipeline the pressure changes is small,conversely the pressure changes is great.According to this fact a method of natural gas network dynamic simulation based on adaptive step has been proposed.This step can be adjusted according to the comparison results of each point flow value and reference value.In addition to the method of line has been adopted in order to solve the dynamic model.The simulation results show that the calculation speed of adaptive step method is much higher than the fixed step method under the same calculation precision.

Key words: adaptive step, natural gas network, dynamic simulation, reference value, method of line