This paper presented a new method of locating the probable leakage zones in the water distribution networks. The proposed method has consisted of two steps: first, a zone with the most leakages is identified by analysing the results of the pressure metering at different parts of the network. In the second step, the leaky zone is divided into some virtual zones. According to the field pressure or flow metering results in the network, the simultaneous calibration of the nodal demand and the pipes' roughness coefficients are dealt with by the Imperialist Competitive Algorithm (ICA) at different hours of the day. Considering the implementation results at any time, the probability of the leakage in each virtual sub-zone and the roughness coefficient of the pipes are estimated, simultaneously. The proposed method was implemented on two hypothetical networks and a real network. The results showed that this method could prioritize the leaky zones with good accuracy. The proposed method can be used by the water utilities for leak detection in water distribution networks.

本文提出了一种定位供水管网中可能泄漏区域的新方法。所提出的方法包括两个步骤：首先，通过分析网络不同部分的压力测量结果，确定泄漏最多的区域。第二步，将泄漏区域划分为一些虚拟区域。根据网络中的现场压力或流量计量结果，在一天中的不同时间通过帝国主义竞争算法（ICA）处理节点需求和管道粗糙度系数的同时校准。随时考虑实施结果，同时估计每个虚拟分区的泄漏概率和管道的粗糙度系数。所提出的方法在两个假设网络和一个真实网络上实现。结果表明，该方法可以对泄漏区域进行优先排序，并具有良好的准确性。所提出的方法可以被供水公司用于供水网络中的泄漏检测。