Study on fault line detection based on S-rough sets in indirectly grounding power system
Zhen Hua · Meitan xuebao · 2008
After analyzing the deficiencies and advantages of the fault line detection method based on wavelet packet in indirectly grounding power system,a novel fault line detection method based on S-rough sets(singular rough sets) was proposed.Because the sampling frequency of the zero sequence current signals was too low,the elements of the fault line set were transferred into the sound line set and the results of fault line detection were wrong.The elements transferred can return to the fault line set through constructing an elementary transfer function and the right fault line detection results were achieved.The simulation results show that this method has effectively raised the accuracy of the fault line detection in indirectly grounding power system.