POWER CABLE FAULT LOCATION TECHNIQUE BASED ON PARAMETER OPTIMIZED VARIATIONAL MODAL DECOMPOSITION

With the complexity of power systems and the increase of loads, power cable faults occur frequently, affecting the safety of power supply. A parameter optimization-based variational modal decomposition (VMD) technique combined with wavelet transform is used. Through in-depth analysis of cable fault signals, this study first applies VMD to decompose the signals, and then further analyzes the processed signals in combination with wavelet transform. The experimental results show that the method achieves a significant reduction in the average localization error in the simulated fault test, with an average error of less than 1%, which improves the localization accuracy by about 30% compared with the traditional method. In the processing of complex fault signals, the present method shows better adaptability and robustness. Overall, this study not only improves the accuracy of fault localization, but also provides a new technical path for the diagnosis and maintenance of power system faults.