数据采集设置对DMA流量模式的影响  

Influences of Data Acquisition Settings on the DMA Flow Patterns

作　　者：王子麒 徐强[1] 郑成志 强志民[1] 钟汶均 张昭君 舒诗湖 WANG Zi-qi;XU Qiang;ZHENG Cheng-zhi;QIANG Zhi-min;ZHONG Wen-jun;ZHANG Zhao-jun;SHU Shi-hu(Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Guangdong Yuehai Waterworks Co.Ltd.,Shenzhen 518021,China;College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]中国科学院生态环境研究中心饮用水科学与技术重点实验室,北京100085 [2]广东粤海水务股份有限公司,广东深圳518021 [3]东华大学环境科学与工程学院,上海201620

出　　处：《中国给水排水》2022年第8期20-24,共5页China Water & Wastewater

基　　金：国家重点研发计划项目(2019YFD1100105);中国科学院青年创新促进会项目(2019043);国家自然科学基金资助面上项目(52170105)。

摘　　要：智能水表监测的水量数据为用水模式确定及供水管网漏损分析提供了重要的基础。然而,数据精度与频度会对分析结果产生重要影响。以10个独立计量区(DMA)入口流量计数据作为基础样本,分析了数据采集周期与精度对最小夜间流量计算以及DMA流量模式分析的影响。结果表明,水表数据采集周期增加会导致最小夜间流量计算结果增大,同时降低流量模式的精细度;数据精度降低会导致流量模式呈阶梯状甚至双线式,无法反映真实的用水模式。水表数据采集周期与精度存在对应关系,在设定时需要相互匹配。Water consumption data monitored by smart water meters provide a crucial foundation for determination of water consumption pattern and water loss analysis in water distribution systems.However, the analysis results could be critically influenced by data precision and acquisition period.Based on the water flow data from water meters at ten district metered area(DMA) entrances, this study analyzed the influences of acquisition period and data precision on the calculation of minimum night flow(MNF) and the analysis of DMA flow pattern. The results indicated that the increase in acquisition period would raise the MNF calculation results and deteriorate the fineness of water consumption pattern. Water consumption would follow a pattern of stages or even two lines with the reduction of data precision, which could not reflect the real water consumption pattern. The investigation illustrates the relationship between the acquisition period and data precision of the water meter, which needs to match with each other during the parameter setting.

关 键 词：独立计量区 数据采集周期 数据精度 流量模式 最小夜间流量 

分 类 号：TU991[建筑科学—市政工程]