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1.长沙理工大学电气与信息工程学院,湖南省长沙市 410114
2.国网常德供电公司,湖南省常德市 415000
3.中国电力科学研究院有限公司,北京市 100192
杜章华(1995—),男,硕士研究生,主要研究方向:电力系统反窃电。E-mail:592359436@qq.com
苏盛(1975—),男,通信作者,教授,博士生导师,主要研究方向:电力系统网络安全防护和反窃电。E-mail:eessheng@163.com
刘正谊(1978—),男,高级工程师,主要研究方向:电力系统运维与营销管理。E-mail:zhengyi_liu@163.com
收稿日期:2020-02-22,
修回日期:2020-09-14,
网络出版日期:2020-12-21,
纸质出版日期:2021-01-25
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杜章华,苏盛,刘正谊等.基于生产经营状态识别的低误报率窃电检测二次筛查方法[J].电力系统自动化,2021,45(2):97-104.
DU Zhanghua,SU Sheng,LIU Zhengyi,et al.Second Inspection Method for Electricity Theft Detection with Low False Alarm Rate Based on Identification of Production and Operation Status[J].Automation of Electric Power Systems,2021,45(2):97-104.
杜章华,苏盛,刘正谊等.基于生产经营状态识别的低误报率窃电检测二次筛查方法[J].电力系统自动化,2021,45(2):97-104. DOI: 10.7500/AEPS20200222002.
DU Zhanghua,SU Sheng,LIU Zhengyi,et al.Second Inspection Method for Electricity Theft Detection with Low False Alarm Rate Based on Identification of Production and Operation Status[J].Automation of Electric Power Systems,2021,45(2):97-104. DOI: 10.7500/AEPS20200222002.
数据驱动的窃电检测方法主要根据电量及派生指标识别低电量异常,容易受干扰影响误报。利用工商业用户生产经营状态指标大致固定的特点,提出基于生产经营状态识别的窃电二次筛查方法。首先,将检出的低电量异常用户每天的三相功率作为负荷特征,用以标识其当天的用电行为模式及生产经营状态。然后,将每天的负荷特征进行近邻传播聚类。当低电量异常时段负荷特征与正常低电量生产经营状态聚为同类时,认为是用户状态正常转换导致的异常,可排除窃电嫌疑。基于实际窃电数据的测试表明,所提方法可降低误报率。
Data-driven power theft detection methods mainly identify low power abnormalies according to power and derived indicators
which could result in high false positive due to interference. Taking the advantage of the characteristic that the indicies of production and operation status of industrial and commercial users are generally constant
a second inspection method for electricity theft based on identification of production and operation status is proposed. First
the daily three-phase power of the detected abnormal low-power users is used as the load characteristic to identify the power consumption behavior mode and the production and operation status of the day. Then
the daily load characteristics are clustered by affinitty propagation. When the load characteristics of the abnormal period of low power are clustered with the normal low-power production and operation status as the same group
it is considered that the abnormality caused by the normal transition of the state can be ruled out of the suspected electricity theft. Based on the experiments of actual electricity theft data
the proposed method can reduce the false positive rate.
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