盐环定扬黄灌区五泵站运行优化研究

Optimization study on the operation of No.Five Pumping Station in the Yanhuan Dingyang Yellow River irrigation district

梯级泵站担负着农业和生活供水的重要任务,运行中消耗巨大能量,因此,提高泵站效率,降低能耗,对国民经济具有重大意义。为合理选择泵站机组在不同工况下的组合方式,实现单级泵站的运行优化,通过分析水泵运行特性以及管路损失特性,建立泵站能耗优化数学模型。采用动态规划法,以泵站运行总能耗最低作为目标函数,确定约束条件和递推方程,编写MATLAB动态规划程序对模型求解,能够计算出最优的开机组合。以陕甘宁盐环定扬黄灌区五泵站为研究对象,计算结果表明:采用动态规划法,利用计算机语言,可以快速并准确地在满足约束条件下所有的水泵开机组合型式中寻找出最优的开机组合,实现泵站的能耗减少,提高泵站的运行效率。建立的数学模型具有较强的实用性和通用性,可以为泵站的运行提供最优决策,对提高泵站的经济效益具有一定指导意义和应用价值。

Cascade pumping stations are responsible for the important tasks of agricultural and domestic water supply,and consume a lot of energy in operation.Therefore,improving the efficiency of the pumping stations and reducing energy consumption are of great significance to the national economy.In order to reasonably select the combination mode of pump units under different working conditions and realize the operation optimization of single-stage pump station,the mathematical model of pump station energy consumption optimization is established by analyzing the pump operation characteristics and pipeline loss characteristics.The dynamic programming method is used to determine the constraint conditions and recursive equations with the lowest total energy consumption of pump station as the objective function.The MATLAB dynamic programming program is written to solve the model and calculate the optimal starting combination.Taking the No.5 pumping station of the Shaanxi-Gansu-Ningxia Yanhuanding Yellow River Irrigation as the research object,the calculation results show that the dynamic programming method and the computer language can quickly and accurately find the optimal start-up combination among all the pump start-up combinations under satisfactory constraint conditions,reduce the energy consumption of the pumping station and improve the operation efficiency of the pumping station.The established mathematical model has strong practicability and universality,which can provide optimal decision for the operation of the pump station,and has certain guiding significance and application value for improving the economic benefits of the pump station.