Distribution Network Topology Checking and Power Stealing Identification Based on Marketing & Distribution & Dispatching Data Analysis

This paper firstly proposes a method of topology verification based on spectrum similarity of voltage curves of intelligent meters, using distribution data acquired from SCADA system and power information acquisition system. The paper compares Pearson correlation coefficient and grey correlation analysis in time domain and frequency domain, then it presents a practical method for checking topological anomalies of distribution lines, which is verified by an example. On the basis of the correct topological structure of the line, the paper finds out a kind of electricity stealing or abnormal realtime monitoring process, before which the abnormal location of the downstream node identified by the change of the voltage of the intermediate node has been carried out.