To improve the accuracy of fault identification in substation operation and maintenance,a method for automatic identification of substation operation and maintenance faults based on short-circuit current is proposed.Eliminate noise and outliers in current data,analyze the changes in short-circuit current signals before and after faults,use short-circuit current characteristic data to mine fault information in current signals,and achieve automatic identification of substation faults.The results show that the method proposed in this article can determine the occurrence of three-phase short circuit faults in line 7 of the 220 kV substation and single-phase short circuit faults in output line 2.The identification effect of this method is good.
关键词
短路电流/运维检修故障/变电站故障/故障识别/短路电流分析
Key words
short-circuit current/operation and maintenance fault/substation fault/fault identification/short-circuit current analysis
维普
万方数据