Fast fault section estimation in distribution substations using matrix-based cause-effect networks

A new method for estimating fault sections in power substations is proposed . In this paper, the knowledge representation and inference procedures base d on the cause-effect networks (CE-Nets) and rule matrix transformation tec hniques are presented. The matrix based inference procedures are proposed t o estimate the possible fault sections through simple matrix operations by transforming the established CE-Nets into matrix forms. The method is super ior to existing production systems in the inference speed and the process o f implementation. By testing on a typical Taiwan Power Company's (Taipower) secondary substation, the experimental results show that the effectiveness of the proposed method even for the fault domains involving multiple fault s and failure operations of protective devices. Moreover, it is easy to imp lement and transplant into different substations.