南水北调与水利科技2013，Vol.11Issue(4)：124-127,195,5.DOI:10.3724/SP.J.1201.2013.04124
计量小区(DMA)夜间最小流量解析方法探讨与案例研究
Analysis Method and Case Study for the Minimum Night Flow in the District Metered Area of the Water Distribution System
摘要
Abstract
The analysis of the night minimum flow data in the Districted Metered Area (DMA) of the water distribution system can characterize the real loss of DMA.The high-frequency and high-accuracy measured night flow data were analyzed,which indicated that the night flow data of DMA at different time periods are in normal distribution and the lowest night flow data is close to the real loss of DMA.In this study,the minimum night flow data from 2 to 4 AM in the early morning were analyzed based on the confidence level of 95.5％ and confidence interval of (m-2d,m+2d).The results showed that the minimum night flow of DMA after removing the abnormal values characterized by m-2d can eliminate the effects of error and interference of measured data,and therefore obtain the real loss of DMA.This method can lower the evaluation error of night water demand,and facilitate the in-situ meter flow measurement to assess the DMA leakage level quickly.关键词
DMA/给水管网/真实漏损/夜间最小流量/置信区间/案例研究/数据分析Key words
District Metered Area/water distribution system/ real loss/ minimum night flow/ confidence interval/case study/ data analysis分类
建筑与水利引用本文复制引用
郝志萍,侯煜堃,崔昌..计量小区(DMA)夜间最小流量解析方法探讨与案例研究[J].南水北调与水利科技,2013,11(4):124-127,195,5.基金项目
国家水体污染控制与治理科技重大专项课题"南水北调受水区饮用水安全保障技术研究与综合示范"(2012ZX07404-004) （2012ZX07404-004）
