Misiunas D, Vítkovský J, Olsson G, Lambert M, Simpson A
Dept of Industrial Electrical Engineering and Automation, Lund University, PO Box 118, 221 00 Lund, Sweden.
Water Sci Technol. 2006;53(4-5):503-11. doi: 10.2166/wst.2006.154.
An algorithm for the burst detection and location in water distribution networks based on the continuous monitoring of the flow rate at the entry point of the network and the pressure at a number of points within the network is presented. The approach is designed for medium to large bursts with opening times in the order of a few minutes and is suitable for networks of relatively small size, such as district metered areas (DMAs). The burst-induced increase in the inlet flow rate is detected using the modified cumulative sum (CUSUM) change detection test. Based on parameters obtained from the CUSUM test, the burst is simulated at a number of burst candidate locations. The calculated changes in pressure at the pressure monitoring points are then compared to the measured values and the location resulting in the best fit is selected as the burst location. The EPANET steady-state hydraulic solver is utilised to simulate the flows and pressures in the network. A sensitivity-based sampling design procedure is introduced to find the optimal positions for pressure monitoring points. The proposed algorithm is tested on a case study example network and shows potential for burst detection and location in real water distribution systems.
提出了一种基于对管网入口处流量和管网内多个点压力的连续监测来进行供水管网爆管检测与定位的算法。该方法针对开启时间为几分钟左右的中大型爆管设计，适用于相对较小规模的管网，如分区计量区域（DMA）。使用改进的累积和（CUSUM）变化检测测试来检测爆管引起的入口流量增加。基于从CUSUM测试获得的参数，在多个爆管候选位置模拟爆管。然后将压力监测点处计算出的压力变化与测量值进行比较，选择拟合度最佳的位置作为爆管位置。利用EPANET稳态水力求解器模拟管网中的流量和压力。引入基于灵敏度的采样设计程序来确定压力监测点的最佳位置。所提出的算法在一个案例研究示例管网中进行了测试，显示出在实际供水管网系统中进行爆管检测与定位的潜力。
