The Study On Fault Tracking Ranging Based On Wavelet Energy Package Traveling Wave Theory

With China’s national policy to China’s high-speed rail development,social and economic development is booming and people’s living standards are constantly improving.Therefore,higher requirements are put forward for the reliable,safe and stable operation of high-speed railway.If the railway fails,it will not only affect daily work travel plans passengers,but also cause huge property losses due to time delays,and even seriously endanger personal safety.Therefore,when the track fails,it is important to be able to quickly identify the current operating state of the track and quickly locate the distance and location where the failure occurred.This paper first introduces and analyzes the basic knowledge of the orbit,then introduces and analyzes the fundamental theory of traveling wave,and then uses the traveling wave theory to analyze the three states of the orbital circuit(the characteristic analysis of broken-rail state traveling,the characteristic analysis of traveling wave in the fractured state of the rail,the characteristic analysis of traveling wave in the shunt state)combined with the characteristics of each state of the down-going wave,a broken-track measurement method based on wavelet energy analysis was proposed.From this method,using the wavelet energy package’s sensitivity to the structural damage and the characteristics of the largeness,the features extracted by the traveling wave response are used as the wavelet analysis,and the wavelet energy packet is calculated as the feature vector of the track state recognition,and then the wavelet.The neural network is used to determine the fault location.After experimental simulation,the method has better identification and positioning capabilities.Finally,the track circuit power supply and monitoring devices are simple hardware designs.The main research content of this paper is as follows:(1)According to the various operating states of the track circuit,a detailed analysis is performed on the characteristics of track broken-state traveling wave characteristics,rail fracture state traveling wave characteristics analysis,and branch state traveling wave characteristics analysis.(2)Propose a broken-track ranging method for traveling wave theory based on wavelet energy packet analysis.The optimal wavelet packet decomposition level of wavelet energy packet and the optimal wavelet base are optimized.The wavelet energy packet is constructed and corresponding.Input feature extraction,and finally modeling and simulation.(3)Simple hardware design for the track circuit power supply device and monitoring device.