一种电能表远程校准和大规模验证方法

A method for remote calibration and large-scale verification of electric energy meter

利用远程抄读的用电数据对电能表误差进行远程计算。原有工作已证实,基于流量守恒原则,如果给定了集群中任何仪表的相对误差,则可以根据仪表集群的一组读数来计算每个仪表的相对误差,从而在不使用外部标准仪器的情况下获得相对误差。文章改进原有方法,将算法的使用范围由实验室扩展到实际台区中。提出了一种电能表拓扑结构中损耗的估计方法,并利用迭代方式估计其最优值。该算法在天津市已实现大规模验证并实际投入使用。另外,一种基于假设检验的大规模电能表误差合格情况验证方法在文中提出并应用到实际中,解决了远程校准方法难以验证结果的弊端。借助该算法可以有效降低现场电能表的维护成本,并有助于预测仪表的使用寿命。

In this paper,we utilize remote-reading smart meter data to calculate the meter error remotely.The original work has confirmed that based on the principle of flow conservation,if the error of any meter in a cluster is given,the error of each other meter can be calculated according to readings of the cluster without any external standard instrument.This paper improves the research and extends the scope of the algorithm from the lab to practical.What’s more,an estimation method for loss in the topology of electric energy meter is proposed.The algorithm has been implemented in Tianjin for large-scale verification.In addition,a verification method for error qualification of large-scale electric energy meter based on hypothesis testing is proposed and applied in practical,which solves the drawbacks of the method being difficult to verify the results.The algorithm can effectively reduce the maintenance cost of the field energy meter and help predict the life of smart meter.