The analysis of power fault mode based on discrepancy relation

The power supply is a typical equipment. It is used widely. At the same time, it is difficult to solve its fault diagnosis problem by using general or traditional fault diagnosis theory and method, because of its uncertainty, fuzzy and other questions. Rough Set (RS) represents the uncertainly technology which provides an effective approach to resolve these issues, receives more academic attention nowadays. During the process of fault diagnosis, people always face incomplete information systems due to data measurement, obtaining restrictions and other reasons. However, the classical RS theory is based on the complete system. So we proposed a new method about data filling on the basis of discrepancy relation. Experiment shows that this method can effectively increase the precision and decrease the conflict rate.