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城镇输配水管网系统中的关阀水锤是影响系统安全运行的重要因素之一。为降低关阀水锤危害,建立了输配水管网系统中的多阶段线性关阀水锤优化模型,以降低系统水锤压力波动为目标,利用粒子群优化算法,寻找最优的关阀过程曲线。对比优化结果和传统的线性关阀结果,多阶段线性关阀不仅有效地降低了水锤压力波动,而且大大缩短了关阀时间。优化结果从理论上证实并完善了工程中两阶段关阀操作的正确性和有效性。研究内容和成果有利于改善常规的阀门操作,为输配水管网系统的水锤防护提供有价值的理论和技术依据。
Water shut-off valve in urban water distribution system is one of the important factors that affect the safe operation of the system. In order to reduce the water hammer damage, a multi-stage linear valve water hammer optimization model was established to reduce the system water hammer pressure fluctuation. Particle swarm optimization algorithm was used to find the optimal valve closing process curve. Comparing the optimization results with the traditional linear valve closing results, the multi-stage linear valve not only effectively reduces the pressure fluctuation of water hammer, but also greatly shortens the valve closing time. The optimization result proves and improves the correctness and validity of the two-stage valve closing operation in engineering theoretically. The research contents and achievements are helpful to improve the conventional valve operation and provide valuable theoretical and technical basis for water hammer protection of transmission and distribution network system.