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

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.