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提出了修正的最小权重平方和状态估计数学模型,用简约梯度法求解,用于给水管网的状态模拟.估计的参数是所有的节点水压,测量参数是各水源供水量、部分节点水压和管段流量,并且所有管段摩阻也是已知的.这一状态估计方法的最主要的特点是,测量参数的数量远远小于估计参数的数量,而且允许测量参数存在误差.将这一方法应用在西安市给水管网,结果表明,估计的节点水压的精度较高,能满足管网模拟的要求
A modified mathematical model of the least squares weight and state estimation is proposed, which is solved by the simple gradient method and used to simulate the status of the water supply network. The estimated parameters are the water pressure of all the nodes, the measurement parameters are the water supply of each water source, And the pipe flow, and all the pipe friction is also known The main characteristics of this state estimation method is that the number of measurement parameters is far less than the number of estimated parameters, and allows the measurement parameters error.This method is applied In Xi'an water supply network, the results show that the estimated node hydraulic pressure higher accuracy, to meet the requirements of the network simulation