考虑故障工况限额供热的环状供热管网初始流量分配方法
Method of initial flow distribution for looped heating network considering limited heating under fault conditions
摘要：
根据故障工况的管网拓扑结构和限额供热要求,建立了以最小初投资为目标的故障工况优化模型,采用既约梯度法求解,综合正常工况优化模型的结果得到了初始流量分配的优化值。通过案例计算,与最小初投资法、最小平方和法和均分法进行对比分析,结果表明:本文方法的故障工况平均流量比相较于其他3种方法高20%～40%,限额供热达成率为83.3%,而其他3种方法仅为33.3%;但在输送能力提升的同时,该方法的管道材料消耗量比其他方法多25%～30%。
Abstract：
According to the pipe network topology structure under fault conditions and the limited heating requirements, this paper establishes an optimization model for fault conditions with the goal of minimizing initial investment. The reduced gradient method is used for solving. The optimized value of the initial flow distribution is obtained by integrating the results of the normal condition optimization model. Through case calculations and comparative analysis with the minimum initial investment method, the minimum sum of squares method, and the equal sharing method, the results show that the average flow ratio under fault conditions of the method in this paper is 20% to 40% higher than that of the other three methods. The achievement rate of limited heating is 83.3%, while that of the other three methods is only 33.3%. However, while improving the transportation capacity, the consumption of pipeline materials of this method is 25% to 30% more than that of other methods.
Keywords:heating network; initial flow distribution; fault condition; limited heating; minimum spanning tree; minimum initial investment