Online fractal identification of cable's ground fault traveling wave in mine

摘要

Opracowano system detekcji zwarć doziemnych w kablach wysokonapięciowych stosowanych w kopalniach. System bazuje na ortogonalnych splinowych talkach I realizuje identyfikację fraktalną.%In order to capture the occurrence moment of traveling wave to accurately locate the ground fault of high voltage transmission electricity cable, we analyzed the transient process of the traveling wave produced by cable ground fault, finding it is a self-similar process on specific bandwidth in a strict sense, and further proposed a fractal identification algorithm based on quadratic spline orthogonal wavelet. Experiment denotes that the occurrence moment of traveling wave can be obtained from waveform on different scales by fractal identification of test signal.