大型输水渠道的区间调度方式研究

Study on partition schedule for large water transfer channel

合理有效的调度方式对大型输水渠道的安全高效运行具有十分重要的意义。本文从减小渠道调控影响范围出发,提出了区间调度的概念。同时以南水北调中线总干渠为例,建立了适用于长距离复杂内边界的一维非恒定流数学模型,并按照闸前常水位的运行方式,在一定闸前水位变幅下对"顺序"和"交替"两种区间调度模式进行了模拟计算。分析比较了不同模式下影响渠道安全稳定输水的重要参数,结果表明区间调度能够控制波动影响范围,减少参与调节的节制闸个数,可以作为大型输水渠道调度运行的有效方法,并给出了较优的区间调度方式。

Effective scheduling is crucial to the operation of a large water transfer channel. To reduce the scope of negative influences by channel regulation, we developed a new concept called partition schedule. In this work, the South-to-North Water Transfer Project （SNWTP） was taken as a case study. We adopted a downstream control method and developed a 1-D unsteady flow model to study two partition schedules： a sequential schedule and an alternative schedule under certain maximum amplitude of water level. This paper presents the simulation results and determines the key factors of great influence on the system＇s safety and stability. Results show that partition schedule is effective for operation and control of large transfer channel and it reduces wave influencing scope and number of control gates required. Optimal partition schedules are also presented.