Title:
PLANT OPERATION ASSISTANCE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/193980
Kind Code:
A1
Abstract:
The present invention is characterized by being provided with a sensor integrity determination device, a plant simulator, and a plant condition estimation device. The sensor integrity determination device is characterized by being provided with: a redundant sensor abnormality determination verification means which, if one sensor of a redundant set of sensors is found to be outputting an abnormal value, determines whether the sensor can be used to make a correct determination, by applying a majority rule to the output signals from the redundant set of sensors; a redundant sensor abnormality determination means which, if it is determined that the sensor can be used to make a correct determination, determines whether the sensor signal is normal or abnormal; and a first abnormal sensor signal removal means which transmits the sensor signal to the plant simulator if the sensor signal is determined to be normal. Further, the plant simulator is characterized by being provided with a parameter modification means which modifies model parameters on the basis of the sensor signal determined to be normal by the first abnormal sensor signal removal means. Thus, the present invention can provide a plant operation assistance system which can accurately assess plant conditions by accurately identifying and excluding sensors indicating an abnormal sensor value.
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Inventors:
KATONO KENICHI (JP)
ISHII YOSHIHIKO (JP)
ISHIKAWA TADAAKI (JP)
KANADA MASAKI (JP)
KAMOSHIDA RYOTA (JP)
ARITA SETSUO (JP)
ISHII YOSHIHIKO (JP)
ISHIKAWA TADAAKI (JP)
KANADA MASAKI (JP)
KAMOSHIDA RYOTA (JP)
ARITA SETSUO (JP)
Application Number:
PCT/JP2014/066085
Publication Date:
December 23, 2015
Filing Date:
June 18, 2014
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G05B23/02
Foreign References:
| JP2013539886A | 2013-10-28 | |||
| JPS62126407A | 1987-06-08 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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