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Plant monitoring device, plant monitoring method, and program

A complete set of equipment and monitoring device technology, applied in mechanical equipment, gas turbine devices, jet propulsion devices, etc., can solve problems such as delayed mechanization and AI, and achieve long-term trends, ease long-term trends, and improve versatility and generality. Effect

Pending Publication Date: 2022-07-15
MITSUBISHI HEAVY IND LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such systems, humans need to closely monitor sensor values ​​to grasp long-term trends, which is one of the reasons for delaying mechanization and AI

Method used

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  • Plant monitoring device, plant monitoring method, and program
  • Plant monitoring device, plant monitoring method, and program
  • Plant monitoring device, plant monitoring method, and program

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0026]

[0027] Below, refer to Figures 1 to 6 The plant monitoring apparatus 20 which concerns on 1st Embodiment of this invention is demonstrated.

[0028] (the whole frame)

[0029] figure 1 It is a figure for demonstrating the outline of the plant monitoring apparatus which concerns on 1st Embodiment of this invention.

[0030] like figure 1 As shown, the plant monitoring apparatus 20 which concerns on this embodiment is an apparatus for monitoring the operating state of the plant 1 in which a plurality of evaluation items exist. The plant monitoring device 20 acquires detection values ​​representing the state quantities for each evaluation item from the sensors provided in the respective parts of the plant 1 . Then, the plant monitoring device 20 uses the Mahalanobis-Taguchi method (hereinafter, referred to as the MT method) to determine whether the operating state of the plant 1 is normal or abnormal based on the acquired detection value.

[0031] The plant 1 acc...

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Abstract

A plant monitoring device (20) is provided with: a detection value acquisition unit (211) that acquires a detection value beam; a first Mahalanobis distance calculation unit (212) that calculates a first Mahalanobis distance on the basis of a unit space created from a past detection value beam; a first SN ratio calculation unit (214) that calculates a first SN ratio for each of the plurality of evaluation items; a second Mahalanobis distance calculation unit (215) for calculating a second Mahalanobis distance by increasing or decreasing each of the plurality of detection values; a second SN ratio acquisition unit (216) that, on the basis of the first Mahalanobis distance and the second Mahalanobis distance, converts the first SN ratio for each evaluation item into a second SN ratio, and acquires the second SN; and an addition unit (217) that calculates, for each of the plurality of evaluation items, an addition value of the plurality of second SN ratios acquired within a predetermined period.

Description

technical field [0001] The present invention relates to a complete set of equipment monitoring device, a complete set of equipment monitoring method and program. [0002] This application claims the priority based on Japanese Patent Application No. 2019-236772 for which it applied to Japan on December 26, 2019, The content is used here. Background technique [0003] In various plants such as gas turbine power plants, nuclear power plants, and chemical plants, and their remote monitoring systems, a system that displays important sensor values ​​is used to monitor long-term trends in plants. In such a system, humans need to closely monitor sensor values ​​to grasp long-term trends, which is one of the reasons for delays in mechanization and AI. Therefore, for example, Patent Document 1 describes a system for monitoring the long-term trend of a plant by obtaining a regression formula representing a margin and a deviation to the limit value of each of a plurality of sensor valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02F01D25/00F02C7/00
CPCF01D21/003F05D2260/80F05D2270/70G05B23/024G05B23/0221F02C9/28G05B23/02F01D25/00F02C7/00
Inventor 永野一郎斋藤真由美江口庆治青山邦明
Owner MITSUBISHI HEAVY IND LTD