Mitsubishi Hitachi Power Systems, Ltd.

Masashi Inoue

Yoshiyuki Hamaji

Masayuki Takahama

Naotaka Mikami

Provided is a plant state monitoring method which monitors an operation state of a plant by using the Mahalanobis distance based on the plant state amount. The method creates a first unit space as a set of data used to be a reference when judging whether the plant operation state during a start operation period is normal according to the state amount in the plant start operation period. The method also creates a second unit space as a set of data used to be a reference when judging whether the plant operation state during a load operation period is normal according to the state amount in the plant load operation period.

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Hyogo, Japan

Masashi Inoue