Automatic method for the fault diagnosis of power system operation based on wavelet packet decomposition
In order to improve the operation safety of power system,the automatic fault diagnosis method of power system based on wavelet packet decomposition is designed.The real-time monitoring data of the power system is collected and pre-processed,and the pretreatment power system data is decomposed into a series of subfrequency bands of different scales and frequencies.The features related to the fault are extracted from each sub-band,and according to the results of the feature extraction,the previously established fault model and rule base are used to determine the type,location and cause of the fault.The experiment shows that this method can control the diagnostic error rate below 0.5%,which has higher feasibility.
power systemoperation faultfault diagnosiswavelet packet decompositionfeature extraction
万方数据
维普
