基于智能电能表量测数据的低压供电线路健康状态评估  

Health status assessment of low voltage power supply line based on smart electricity meter measurement data

作　　者：黄瑞 肖宇 刘雄 夏向阳 余敏琪[1,2] 刘谋海 HUANG Rui;XIAO Yu;LIU Xiong;XIA Xiangyang;YU Minqi;LIU Mouhai(Power Supply Service Center(Metering Center),State Grid Hunan Electric Power Co.,Ltd.,Changsha 410004,China;Hunan Provincial Key Laboratory of Intelligent Electro-pneumatic Measurement and Application Technology,Changsha 41004,China;School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410014,China)

机构地区：[1]国网湖南省电力有限公司供电服务中心(计量中心),长沙410004 [2]智能电气量测与应用技术湖南省重点实验室,长沙410004 [3]长沙理工大学电气与信息工程学院,长沙410014

出　　处：《电测与仪表》2024年第9期204-208,215,共6页Electrical Measurement & Instrumentation

基　　金：国网湖南省电力有限公司科技项目(5216AG200 00B)。

摘　　要：针对低压台区长期运行的供电线路存在老化等异常情况,文章提出了基于回路阻抗变化的低压供电线路健康状态评估方法,所提方法通过计量装置自动采集各电力数据节点的电压电流数据,根据其中电压和电流的突变情况来计算线路回路阻抗,进一步得到对应线路的回路阻抗特性情况,然后与被检测线路的正常阻抗数据进行比较,经过相应的数据处理绘制阻抗变化曲线,由线路阻抗变化情况来对其进行健康状态评估。最后,通过有关实例分析验证了该方法的有效性。In view of the long-term running power lines anomalies such as aging in low voltage station area,a health status evaluation method of low voltage power supply lines based on the loop impedance variation is proposed in this paper.By collecting the node voltage and current data of power data automatically of metering device,and the line loop impedance is calculated according to the mutation of voltage and current,so as to obtain the loop impedance characteristics of the corresponding line,and then compared with the normal impedance data of the tested line.After corresponding data processing,the impedance change curve is drawn,and the health status of the line is evaluated by the change of the line impedance.Finally,an example is given to verify the effectiveness of the proposed method.

关 键 词：低压台区 供电线路 回路阻抗 状态评估 

分 类 号：TM93[电气工程—电力电子与电力传动]