无功过补偿引起的计量异常事件分析及研究  

Analysis and Research on Abnormal Events of Electric Energy Measurement Caused by Reactive Power Overcompensation

作　　者：古海林 牟攀 王钒迪 吴海文 常仕亮 GU Hailin;MOU Pan;WANG Fandi;WU Haiwen;CHANG Shiliang(Chongqing Electric Power Company Yongchuan Power Supply Branch,Chongqing 402100,China;China National Grid Chongqing Electric Power Company Wanzhou Power Supply Branch,Chongqing 404000,China;Chongqing Electric Power Company Marketing Service Center,Chongqing 401121,China)

机构地区：[1]国网重庆市电力公司永川供电分公司,重庆402100 [2]国网重庆市电力公司万州供电分公司,重庆404000 [3]国网重庆市电力公司营销服务中心,重庆401121

出　　处：《工业计量》2023年第5期111-114,共4页Industrial Metrology

摘　　要：为了降低损耗,通常安装无功补偿装置提高功率因数,达到降损节能的目的。无功补偿装置运行在过补偿状态,会带来线损增加、电压降低等后果。当无功补偿装置严重过补偿时,智能电能表c相显示电流反向,运行过程中计量人员易误认为c相电流极性反接,导致误判断。文章结合无功补偿装置严重过补偿造成智能电能表显示c相电流反向,计量人员误认为c相极性反接导致电费差错的实例,提出具体防范措施,减少不必要的计量差错。Usually,reactive power compensation devices are installed to improve power facto,to achieve the goal of reducing power line losses and energy conservation.When the reactive power compensation device is operated in the overcompensated state,it will bring about the consequences of increased power line losses and voltage reduction.When the reactive power compensation device is severely overcompensated,the smart energy meter C phase shows that the current is reversed,during operation,professionals mistakenly believed that the polarity of phase C current was reversed,resulting in wrong judgment.This article combines the severe overcompensation caused by reactive power compensation devices to cause the reverse display of c-phase current in smart energy meters,examples of professionals mistakenly believing that the polarity reversal of phase C leads to electricity bill errors,propose specific preventive measures,Reduce errors in electricity metering.

关 键 词：容性负载 过补偿 c相电流反向 防范措施 

分 类 号：TB971[一般工业技术—计量学]