Research Of Validity Of Methods And Chaotic Criterion In Fault Selection

Fault selection for the non-effective earthing system is a long-standing problem in theoperation of ineffectively grounded distribution systems. But the spot records show that theeffect is disappointing. The paper particularizes that one is confirming validity of all kinds offault selection methods through data mining on large numbers of local data based on roughset theory, which can expand the scope of correct fault selection and improve the selectionresult reliability; the other is a new fault selection method based on Duffing equation that ishigh measurable delicacyand good anti-jamming. Both of them are combined to improve theaccuracyof fault selection.