Thermal power plant time sequence variable abnormity monitoring method and system
A thermal power plant and time series technology, applied in information technology support systems, instruments, data processing applications, etc., can solve the problem of inability to accurately judge the abnormal operation of the thermal power plant system, the inability to obtain accurate data change trends in the number of segments, Problems such as the number of segments cannot be selected to achieve the effect of retaining the overall characteristics, small fitting error, and improving time efficiency
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[0040] Explanation of technical terms:
[0041] The segmented linear representation refers to dividing a time series X of a certain length into shorter segments, and each segment is represented by a straight line. The present disclosure adopts a bottom-up method for PLR segmentation.
[0042] The output time series refers to a sequence of output values arranged in the order of their occurrence time.
[0043] The input time series refers to a sequence of input variable values arranged in the order of their occurrence time.
[0044] Each monitoring variable in a thermal power plant will have a different stage (signal rising stage, falling stage) or state (normal, abnormal, etc.), and the single-point data of the monitoring variable cannot reflect such a stage or state, and several time-continuous data are required In order to reflect these stages or states in the monitoring variables. PLR can fit a number of consecutive data with the same trend time with straight line segm...
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