Research on HVDC single-ended fault traveling wave location method based on FastICA

Abstract

Detecting the mutation information in traveling wave is the key point to realize high voltage direct current (HVDC) transmission line ground fault location, and the fault voltage traveling wave is essentially independent, therefore, the fault location method based on fast independent component analysis (FastICA) algorithm is proposed in this paper. According to the single-ended fault traveling wave location principle, the FastICA is used to isolate fault voltage traveling wave feature signals from multi-channel high voltage direct current transmission line voltage signals, the time of first and second traveling wave head reach the measurement point are recognized, as well as the polarity of the two wave heads are distinguished. The HVDC transmission system model is established in Matlab for simulating a variety of line to ground fault types, the results show that the traveling wave location method based on FastICA can isolate the fault voltage traveling wave feature signals effectively, and the mutation information can be extracted accurately for realizing fault location.