基于城市轨道供配电监测系统数据异常诊断分析  

Analysis of Data Abnormal Diagnosis Based on Urban RailwayPower Supply and Distribution Monitoring System

作　　者：周大俊 梁晓亮 王翼 ZHOU Dajun;LIANG Xiaoliang;WANG Yi(Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd.,Shanghai 200063,China;Shanghai ISSON Power Quality Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]上海电器科学研究所(集团)有限公司,上海200063 [2]上海宝钢安大电能质量有限公司,上海201900

出　　处：《现代建筑电气》2021年第2期32-37,共6页Modern Architecture Electric

基　　金：国网上海电力公司举手制项目“面向CEMS的智慧能源互操作建模技术研究”(B3090D200001);上海市科委社发处项目(18DZ1203202)。

摘　　要：介绍了城市轨道低压配电系统中电能质量监控系统的搭建和实施。在运用过程中,发现20 kV 1段开关柜进线端与计量柜进线端监控所得电量有偏差,各回路的功率因数误差较大,通过数学模型推导和对采集到的大数据分析,找出主要原因是进线电缆有屏蔽层与无屏蔽层,并提出了改进措施,消除了功率因数角差异,提高了轨道监测系统测量数值的精准度。The construction and implementation of the power quality monitoring system are introduced in the low voltage power distribution system of urban railway.In the process of application,it is found that there is a deviation between the incoming end of the 20 kV switch cabinet and the incoming end of the metering cabinet.The power factor error of each loop is large.Through mathematical model derivation and analysis of the collected big data,the main reason is that the incoming cable has a shielded layer and an unshielded layer.An improvement measure is provided,which eliminates the difference of power factor angle,and the precision of the measured values of the railway monitoring system is improved.

关 键 词：城市轨道 电能质量监控系统 配电系统 功率因数 

分 类 号：TU852[建筑科学]