摘要
针对当前电能计量装置运行监控方法,由于电压互感器受到电网运行环境影响,存在电能表计量误差率高,监控识别准确度低的问题,提出智能制造模式下电能计量装置运行监控方法。分别从电能表误差、电流互感器运行误差、电压互感器运行误差、二次回路误差、线路工况与电网环境因素造成的误差进行分析。设计协议适配方案,并基于电能计量装置在线监控和在线校验具体需求,设计在线监控与校验方案,设置监控与校验运行程序。采集计量装置状态和运行数据并分析其误差,监控超出门限故障信息,发出警报,并在线校验。经实验验证,该方法能够准确识别装置异常,与文献方法相比较,所提方法识别准确度一直保持在94%左右,识别准确度高,且其电表计量误差率最低,始终未超过3%,在电能计量装置运行监控方面具有较好的适用性。
The current method for monitoring the operation of electric energy metering devices,since the voltage transformer is affected by the operating environment of the power grid,has the problems of high metering error rate and low accuracy of monitoring and identification.A method for monitoring the operation of electric energy metering devices in the intelligent manufacturing mode was proposed.This paper analyzes the errors caused by energy meter errors,current transformer operation errors,voltage transformer operation errors,secondary circuit errors,line conditions,and grid environment factors.A protocol adaptation scheme was designed,and based on the specific requirements of online monitoring and online verification of the energy metering device,an online monitoring and verification scheme was designed,and a monitoring and verification operation program was set.Collect the status and operating data of the measuring device and analyze its error,monitor the fault information exceeding the threshold,issue an alarm,and verify online.After experimental verification,this method can accurately identify device anomalies.Compared with the literature method,the proposed method had maintained a recognition accuracy of about 94%,high recognition accuracy,and the lowest metering error rate,which has never exceeded 3%.It has better applicability in the operation monitoring of electric energy metering device.
作者
于冰
YU Bing(Henan Institute of Metrology,Zhengzhou 450000,China)
出处
《中国测试》
CAS
北大核心
2020年第S01期119-125,共7页
China Measurement & Test
基金
河南省科技厅重点科技项目(732866HK52170009)
关键词
智能制造模式
电能计量装置
回路误差
互感器误差
在线监控
intelligent manufacturing mode
energy measurement device
loop error
transformer error
online monitoring
作者简介
于冰(1988-),女,河南郑州市人,硕士,研究方向为电学计量和电测量设备性能检测。
