智能电能表轻负荷运行的计量失准原因分析  

Cause Analysis of the Metering Inaccuracy of the Intelligent Electricity Meter During its Light Load Operation

作　　者：常仕亮 刘拧滔 冯凌 谭时顺 古海林 王雪松 CHANG Shiliang;LIU Ningtao;FENG Ling;TAN Shishun;GU Hailin;WANG Xuesong(Marketing Service Center of State Grid Chongqing Electric Power Company,Chongqing 401123,P.R.China;Yongchuan Power Supply Branch of State Grid Chongqing Electric Power Company,Chongqing 402160,P.R.China)

机构地区：[1]国网重庆市电力公司营销服务中心,重庆401123 [2]国网重庆市电力公司永川供电分公司,重庆402160

出　　处：《重庆电力高等专科学校学报》2024年第2期13-16,共4页Journal of Chongqing Electric Power College

摘　　要：V/V接线电压互感器在6 kV、10 kV等中性点不接地系统中运用非常广泛,主要应用于三相三线电能计量装置,生产工作中10 kV高供高计专变用户广泛采用三相三线电能计量装置。通过10 kV高供高计专变用户三相三线智能电能表a相电流极性反接,导致智能电能表电流、功率因数、功率等参数异常,引起计量失准,运用用电信息采集系统各种曲线数据,结合负载性质和现场测试数据,研究故障状态下智能电能表的计量参数数据,分析出故障原因,纠正差错电量,提出详细的防范措施,确保电能计量装置安全、准确、可靠运行,有效避免电量差错。The V/V wiring voltage transformer is widely used in 6 kV,10 kV and other neutral point ungrounded systems,mainly applied in three-phase and three-wire power metering devices,which are widely used in the production by 10 kV special transformer users with high-voltage power supply and high-voltage terminal metering.The polarity reverse wiring of the A-phase current of the three-phase and three-wire intelligent electricity meter of such users causes anomalies in such parameters of the meter as the current,power factor and power,resulting in metering inaccuracy.By means of various curve data of the electricity consumption information collection system,in combination with the load properties and filed test data,this paper studies the metering parameter data of the meter in the fault state,analyzes the cause of the failure,corrects the wrong power,and puts forward detailed preventive measures,to ensure safe,accurate and reliable operation of the power metering device as well as effectively avoiding power errors.

关 键 词：感性负载 低功率因数 极性反接 计量失准 

分 类 号：TM933.4[电气工程—电力电子与电力传动]