Abstract: At present the bus charging protections have some disadvantages and shortcomings.Analyzing the mechanism and processes of bus charging and making full use of the differences of characteristics variables’ value between normal bus charging and fault element charging,a new protective method is presented in this paper to distinguish normal bus charging from fault element charging based on the fuzzy hyperbox classifier.EMTP program is used to obtain plenty of training and testing patterns.The results...

Key words: hyperbox； bus； charging protection；