How the plant and data evaluation system, condenser vacuum monitoring method, data mining method, and program

摘要

PROBLEM TO BE SOLVED: To efficiently extract and process data correlated with plant data that is a monitoring target to find out a sign of minute abnormality hiding in a normal range.;SOLUTION: This plant data estimation system has: a data registration means 22 storing the data on a plant; an estimation standard construction means 23 temporarily calculating a correlation approximate expression with the other data item in each a monitoring target data item, eliminating defective data on the basis of deviation between a value by the correlation approximate expression and actual data, and actually calculating at least a correlation approximate expression and an estimation standard including standard deviation, by use of the data after the elimination; a data estimation means 24 estimating the data on the plant by use of the estimation standard actually calculated by the estimation standard construction means 23; and a state display means 26 displaying an estimation result by the data estimation means 24.;COPYRIGHT: (C)2005,JPO&NCIPI