智能电能表电压电流异常事件监测设计与应用
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摘要
电能表是能源计量的"秤杆子",它对于保证计量准确性尤为重要。无论是采用模拟乘法器,还是数字乘法器进行计量,电能表的准确性都与其采集到的电压电流有关。当接入电压过高或过低,或发生电压越限、三相电压不平、电流失流等情况时,电能计量的准确性无法保证。为实时监测电能表接入的电压电流幅值变化等运行工况,根据异常情况的不同,建立了电能表电压电流异常模型;同时,给出无效数据筛选规则,设计了异常事件监测及应用流程。通过搭建试验测试平台,对电压越限、电压断相及电流失流等情况进行了试验验证。试验结果证明了智能电能表异常监测设计方案的可行性。有效运用电能表电压电流异常监测,对及时处理计量装置故障、查处窃电行为具有较大帮助。
Electric energy meter is the "steelyard"of energy metering,it is particularly important to ensure the accuracy of the metering.Whether the metering is conducted by analog multiplier or digital multiplier,its accuracy is related to the voltages and currents it collects.When the accessed voltages are too high or too low,or the voltages exceed the limit,or three-phase voltages are uneven and currents loss occurs,it is unable to guarantee the accuracy of electric energy metering.In order to monitor real-time operation conditions,such as voltage and current amplitude changes of the meters access,according to the different abnormal conditions,the abnormal voltage and current model of the electric energy meter is established.In addition,the invalid data screening rule is given,and the monitoring and application process of abnormal events is designed.The test platform is built to verify the situations of voltage violation,voltage phase disconnection and current loss.The test result proves the feasibility of the design scheme.Effectively monitoring the voltage and current abnormality of electric energy meters is of great help in dealing with metering device faults and anti-stealing electricity.
Electric energy meter is the "steelyard"of energy metering,it is particularly important to ensure the accuracy of the metering.Whether the metering is conducted by analog multiplier or digital multiplier,its accuracy is related to the voltages and currents it collects.When the accessed voltages are too high or too low,or the voltages exceed the limit,or three-phase voltages are uneven and currents loss occurs,it is unable to guarantee the accuracy of electric energy metering.In order to monitor real-time operation conditions,such as voltage and current amplitude changes of the meters access,according to the different abnormal conditions,the abnormal voltage and current model of the electric energy meter is established.In addition,the invalid data screening rule is given,and the monitoring and application process of abnormal events is designed.The test platform is built to verify the situations of voltage violation,voltage phase disconnection and current loss.The test result proves the feasibility of the design scheme.Effectively monitoring the voltage and current abnormality of electric energy meters is of great help in dealing with metering device faults and anti-stealing electricity.
引文
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[2] 沈鑫,赵丹妮,曹敏.基于物联网技术的电能计量装置远程在线监测及分析平台研究[J].电测与仪表,2015,52(16):35- 40.
[3] POPPY R H,BRUCES,STUARTG.Classification of AMI residential load profiles in the presence of missing data[J].IEEE Transactions on Smart Grid,2016,7(4):1944- 1945.
[4] 宋晓林,贺云隆,李建波,等.一种全事件采集测试系统的设计与实现[J].电测与仪表,2018(8):131- 136.
[5] 程瑛颖,杨华潇,肖冀,等.电能计量装置运行误差分析及状态评价方法研究[J].电工电能新技术,2014,33(5):76- 80.
[6] HONG S,SHIN D B,PARK B.Development of prototype algorithms for quantitative precipitation nowcasts from AMI onboard the GEO-KOMPSAT-2A satellite[J].IEEE Transactions on Geoscience and Remote Sensing,2016,54(12):7149- 7156.
[7] 张强,于宁,崔晖,等.基于大数据的三相电能表错接线识别软件的设计实现[J].电测与仪表,2018(6):110- 115.
[8] 郑建军,杜克峰,孟海涛,等.多通道时频信号监测评估测试系统的设计与实现[J].自动化仪表,2017(1):65- 68.
[9] HAWZHIN M,SAMET T,KHALED R.Efficient privacy-preserving data collection scheme for smart grid AMI networks[C]//2016 IEEE Global Communications Conference,2016:1- 6.
[10]UTKU O,SAMET T,KEMALA.Comparativeevaluation of smart grid AMI networks:performance under privacy[C]//2016 IEEE Symposium on Computers and Communication (ISCC),2016:1134- 1136.