Unit space generation device, plant diagnosis system, unit space generation method, plant diagnosis method, and program

摘要

The unit space generation device 141 for generating a unit space used for diagnosing the operating state of a plant based on the Mahalanobis distance acquires a group of sampling data consisting of a plurality of state quantities of the plant, which are measured at regular intervals. Based on the sampling data acquisition unit 141A to be used, and the adoption probability calculated each time the sampling data group is acquired, it is determined whether or not to employ the sampling data group as a unit space generation data group based on the unit space. The acquisition decision unit 141C to be obtained, the unit space generation unit 141D for generating a unit space based on the plurality of employed unit space generation data groups, and an output value of the plant corresponding to the sampling data group are acquired. And an output value acquisition unit 141B.