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传统燃气管网功能分析算法采用恒定不变的节点流量作为约束条件来求解节点流量平衡方程组,针对由此产生的管网中部分节点压力出现“负压”的问题,提出基于节点压力波动的节点三态供气工作模式的改进燃气管网功能分析算法,在功能分析过程中,考虑节点流量与节点压力的关系,注重节点获得的实际流量随节点压力而变化的动态响应过程。采用双气源的中压管网验证了改进算法的合理性和收敛性,结果表明:采用改进算法计算求得的燃气管网中某些节点的压力高于传统算法的计算结果,计算管段流量的迭代次数亦低于传统算法的迭代次数。实例证明了该改进算法优于传统的管网功能分析算法。
The traditional gas pipeline network function analysis algorithm uses constant constant node flow as a constraint to solve the node flow equilibrium equations. In view of the problem of "negative pressure In the process of functional analysis, the relationship between node flow and node pressure is considered, and the dynamic response process that the actual flow rate obtained by the node varies with the node pressure is also taken into account during the functional analysis of the gas pipeline network. The results show that the pressure of some nodes in the gas pipeline network calculated by the improved algorithm is higher than that of the traditional algorithm and the flow rate of the pipe section is calculated The number of iterations is also lower than the number of iterations of the traditional algorithm. The example proves that the improved algorithm is superior to the traditional pipe network function analysis algorithm.