Novel Approach to Fault Classification in EHV Transmission Line based on Multi-information Measurements of Fault Transients

摘要

Based on the qualitative analysis of different fault transients in EHV (extra high voltage) transmission line, the features of different transient components were given out. Taking various transient features into account and combining with the information theory, this paper proposed a new algorithm for fault classification based on multi-information measurements of fault transients, which took advantage of both information entropy measurement and complexity measurement. The proposed algorithm can classify different types of faults with different transient components and simulations proved it to be useful especially for the condition under which the fault voltage inception angle is zero and the high-frequency transient component is very low. Therefore, this algorithm would be available in providing a good approach to abundant fault information for transient protection and transient fault research.