基于AMI量测信息的低压配电网拓扑校验方法

针对目前低压配电网络拓扑连接关系辨识的难题，提出了一种基于AMI量测信息的低压配电网拓扑校验方法。该方法首先借助高级量测体系AMI提供的负荷量测信息以及网络数据，得出同一配电变压器下各负荷所属耦合节点电压以及所属支路电流，然后分别求得所有负荷间耦合节点电压和支路电流的相关系数，进行相关性分析，即相关性强的负荷同属于同一馈线，进而确定各负荷所属的馈线；之后根据负荷的耦合节点电压幅值大小，确定各负荷在所属馈线中的上下游关系，最后通过相关性分析结果以及负荷的耦合节点电压分布，对存在错误连接关系的负荷进行修正，最终完成低压配电网络拓扑的校验与修正。算例证明了该算法的可行性与有效性。

Method for LV Distribution Network Topology Verification Based on AMI Metering Data

Aiming at the problem of topology error identification in low voltage distribution network, a method is proposed for low voltage (LV) distribution network topology verification based on AMI metering data. Based on the loads measurement information and network data provided by the advanced measurement system, the method firstly calculates the voltage at the coupling node and the associated branch current of each load under the same distribution, and then separately calculates the correlation coefficients of the coupling node voltages and the branch currents among all the loads for correlation analysis. In this way, the highly correlated loads falls into the same feeder, consequently determining the feeders to which each load belongs. According to the magnitude of the voltage of the coupling nodes of the loads, the upstream and downstream relationships of each load in the same feeder are determined. Finally, the load of the error connection is corrected based on the correlation analysis results and the voltage distribution of the coupling nodes of the load. The topology verification and correction of the LV distribution network are thus completed. The case study has verified the feasibility and effectiveness of the proposed method.