数字孪生长距离引水工程检修排水及充水历时的确定  

Determination of Duration of Drainage and Filling Hydrodynamic Process for the Overhaul of the Digital Twin Long-distance Water Diversion Project

作　　者：叶圣炯 沈启航 于永海[2] 谈震 杨兴旺 YE Sheng-jiong;SHEN Qi-hang;YU Yong-hai;TAN Zhen;YANG Xing-wang(Hangzhou Water Group Co.,Ltd.,Hangzhou 310009,Zhejiang Province,China;Hohai University,Nanjing 210098,Jiangsu Province,China;NARI Group Corporation/State Grid Electric Power Research Institute.,Ltd.,Nanjing 211000,Jiangsu Province,China)

机构地区：[1]杭州市水务集团有限公司,浙江杭州310009 [2]河海大学,江苏南京210098 [3]南瑞集团(国网电力科学研究院)有限公司,江苏南京211000

出　　处：《中国农村水利水电》2024年第3期160-166,共7页China Rural Water and Hydropower

基　　金：江苏省水利厅科技项目(2020026)。

摘　　要：长距离有压重力流引水工程单管输水,其检修排水及充水所需要的时间是检修期间工程停供水后的应急供水调度计划决策的依据。长距离引水工程检修排水及充水历时受到上游水库水位、检修闸门或阀门的过流特性、管道糙率、满流波速等诸多因素影响。为了及时准确地确定检修排水及充水历时,可以基于数字孪生长距离引水工程进行研究。以某长距离引水工程为例,根据监控系统提供的库水位、测压点压力等实时采集值,进行虚实数据交互,确定数字模型参数,使得数字模型逼近物理实体,建立物理实体的数字孪生体。采用一维水动力学模型对检修排水过程和检修完成后的充水过程进行数值计算,排水过程圣维南控制方程以水位和流量为变量,而充水过程则以水深和流量为变量。软件界面采用Java编程,后台数值模拟部分采用Python编程语言。For single-pipe water delivery in long-distance pressure gravity flow diversion projects,the time required for drainage and water filling is the basis for making precise decision for emergency water supply dispatching plan during the overhaul.The time of overhaul for drainage and water filling of long-distance water diversion project is affected by the water level of the upstream reservoirs,flow characteristics of sluices or valves,roughness of pipe and wave speed of pressurized flow.Based on the digital twin of long-distance water diversion project,the time of overhaul for drainage and water filling can be determined promptly and accurately.By taking a long-distance water diversion project as an example,virtual and real data interaction can be done with real-time monitoring data such as pressure and water level of reservoir provided by the monitoring system and then the parameters of digital model can be determined to make approximation of physical entity by digital models and to build a digital twin of the physical entity.Based on one-dimensional hydrodynamic model,numerical simulation on drainage and water filling process is done.Water level and flow are taken as variables in Saint-Venant equations for drainage process,and water depth and discharge are taken as variables in Saint-Venant equations for water filling process.The programme language is Java in the interface of the simulation software and the programme language is Python in numeical simulation.

关 键 词：水动力学模型 明满流 检修排水及充水 数字孪生 

分 类 号：TV672.1[水利工程—水利水电工程] TV131.29