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A logic based expert system (LBES) for fault diagnosis of power system

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3 Author(s)
Young Moon Park ; Dept. of Electr. Eng., Seoul Nat. Univ., South Korea ; Gwang-Won Kim ; Jin-Man Sohn

This paper proposes an expert system for fault diagnosis of a power system using a new inference method. Expertise is, in this paper, represented by logical implications and converted into a Boolean function. Unlike conventional rule-based expert systems, the expertise is converted into Prime Implicants (PIs) which are logically complete and sound. Therefore, off-line inference is possible by off-line identification of PIs, which reduces the on-line inference time considerably and makes it possible to utilize the proposed expert system in real-time environment. This paper also presents alarm verification and correction method for relay and circuit breaker (CB) using pre-identified PIs

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Power Systems, IEEE Transactions on  (Volume:12 ,  Issue: 1 )