Accurate Fault Location of Cable-Overhead Hybrid Distribution Lines Based on Variational Mode Decomposition and Wave Velocity Normalization
With the continuous advancement of urban modernization,distribution lines have been transformed from all-o-verhead lines to cable-overhead hybrid lines.The complex structure of hybrid distribution lines results in high difficulty of fault location and low reliability of conventional fault location methods.In view of this,an accurate fault location method for hybrid distribution lines based on variational mode decomposition(VMD)and wave velocity normalization was studied in this work.The method employs VMD and kurtosis calibration to calibrate the time of traveling wave head,and wave velocity normalization to accurately calculate the fault point in the hybrid line.Simulation analysis performed on PSCAD/EMTDC verified the feasibility of the proposed method.
万方数据
维普
