基于时空分解的梯级泵站输水系统运行效率计算方法与应用

发布时间：2018-12-13 14:59

【摘要】：针对大型串并联梯级泵站输水系统存在组成复杂性和运行动态性,难以对实时运行状态进行评价和优化的问题,提出了一种基于时空分解的串并联梯级泵站输水系统运行效率计算方法。在空间上将系统划分为并联系统、串联系统、泵站和输水子系统。在时间上将动态调度过程划分为若干个平衡状态,定量计算水力、水量损失等影响因素。基于能量传输、转化原理,将各变量进行归一化处理,依次建立泵站、输水子系统和串、并联系统运行效率表达式,可对各子系统及整体实时运行效率进行计算,并为后期系统运行效率优化提供了参考。结合2016年典型并联梯级泵站输水系统调度运行数据,对该方法进行了实践。结果表明,与传统运行效率计算方法相比,该方法在效率计算的实时性和全面性上有明显提升。不仅能够直观反映各级泵站实时运行情况,还可定量评估各输水渠道以及系统整体运行情况,有助于发现影响系统运行效率的薄弱环节,为实时调度提供参考。
[Abstract]:In view of the complex composition and dynamic operation of large-scale cascade pumping station, it is difficult to evaluate and optimize the real-time operation state. A method for calculating the operation efficiency of cascade pumping station based on time and space decomposition is presented. In space, the system is divided into parallel system, series system, pumping station and water transmission subsystem. In time, the dynamic scheduling process is divided into several equilibrium states, and the influence factors such as hydraulic capacity and water loss are calculated quantitatively. Based on the principle of energy transmission and transformation, the variables are normalized and the pump stations, water conveyance subsystems and series and parallel operation efficiency expressions are established in turn. The real-time operation efficiency of each subsystem and the whole system can be calculated. It also provides a reference for the optimization of system operation efficiency in the later stage. Based on the operation data of the typical parallel cascade pumping station in 2016, the method is put into practice. The results show that compared with the traditional operation efficiency calculation method, this method can improve the real-time and comprehensiveness of the efficiency calculation obviously. It can not only directly reflect the real-time operation of pump stations at all levels, but also quantitatively evaluate the operation of each water conveyance channel and the whole system. It is helpful to find the weak links that affect the operation efficiency of the system and to provide a reference for real-time dispatching.
【作者单位】：济南大学资源与环境学院;中国水利水电科学研究院;南水北调东线山东干线有限责任公司;
【基金】：国家科技支撑计划项目课题(2015BAB07B02) 国家青年基金(51409119) 山东省省级水利科研与技术推广项目(SDSLKY201404)
【分类号】：TV675

【相似文献】