ABNORMALITY DIAGNOSIS SYSTEM AND ABNORMALITY DIAGNOSIS METHOD

摘要

This abnormality diagnosis system for diagnosing abnormalities in a plant is provided with: an abnormality diagnosis control unit which, with respect to a measurement parameter measured in a plant determined to have an indication of abnormality, predicts the development of the measurement parameter by extrapolation, and which generates an abnormality manifestation pattern that is a pattern of behavior of the measurement parameter after prediction; and a storage unit which stores a plurality of abnormality model patterns PA, PB that are patterns of behavior of the measurement parameters corresponding to causes CA1, CA2, CB1, CB2 of plant abnormality. The abnormality diagnosis control unit makes a matching determination between the abnormality manifestation pattern that has been generated and the plurality of abnormality model patterns PA, PB stored in the storage unit, and identifies, as the cause of the abnormality in the abnormality manifestation pattern, the abnormality causes CA1, CA2, CB1, CB2 of the abnormality model patterns PA, PB that have been determined to be matching.