一种基于压力测点报警等级的供水管网泄漏区域识别方法

A leakage zone identification method for water distribution networks based on the alarm level of pressure sensors

当供水管网发生泄漏报警后,由于相邻节点之间泄漏报警信号的相似性,直接采用报警信号进行精确的泄漏节点识别是困难的,因此提出了一种基于测点报警等级的泄漏区域识别方法。首先,在泄漏范围内生成用于训练和测试的泄漏残差样本,随后将各个测点的残差值按区间转化为报警等级从而形成报警等级样本。将训练样本中报警等级相同的节点合并为一个节点组并作为类别标签。采用枚举法,利用欧式距离和测试样本对样本的泄漏量间隔及报警等级间隔进行优化。通过示例管网考察了该方法的可行性。结果表明,相较于以往基于测点报警特征的泄漏区域识别方法,该方法可以有效的减小候选泄漏区域的面积。

When a leakage event triggers the leakage alarms,due to the similarity of leakage alarm characteristics between the adjacent nodes,it is difficult to directly use the alarm characteristics to identify leakage nodes accurately.Therefore,this paper proposes a leakage zone identification method based on the leakage alarm level.For the first,the leakage residual samples for each node are generated within the range of leakage amount,then convert the residual values of each sensors into the alarm level.Nodes with the same alarm level sample are merged into a node group,and used as a category label.The euclidean distance and test samples are used to optimize the sample interval and alarm level interval by the enumeration method.A network is used to illustrated the proposed method.The results show that compared with the previous leakage zone identification method based on the leakage alarm,the proposed method can reduce the area of candidate leakage zone effectively.