Plant State Display Using Period Correlation Comparison
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Solution Overview
Problem
Existing methods fail to effectively compare and evaluate the temporal changes in the operation state of a plant, such as a thermal power generation facility, due to complex changes in multiple parameters, making it difficult to assess differences in performance over time.
Innovation Solution
A state display device and method that allow for the comparison of temporal changes in a first parameter and its correlation with a second parameter by selecting different periods, using approximate function calculations, and displaying differences, enabling intuitive and objective evaluation of the plant's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one parameter is displayed for temporal change analysis, then the display is simple, but it is impossible to appropriately evaluate the state of the plant due to complex changes in multiple parameters
Solution Approach 1:
The patent segments the display into two distinct parts: a temporal change graph showing the first parameter over time, and a correlation graph showing the relationship between the first and second parameters. This segmentation allows each graph to serve a specific evaluation purpose, resolving the contradiction between simple display and accurate state evaluation.
Solution Approach 2:
The patent adds a second parameter dimension to the display system. While the temporal change graph shows one parameter over time (1D), the correlation graph introduces a second parameter axis, creating a 2D parameter space that enables comprehensive state evaluation without overwhelming complexity.
2Measurement precision
If multiple parameters are displayed to evaluate plant state, then evaluation accuracy improves, but the display becomes complex and difficult to interpret
Solution Approach 1:
The patent segments the display into two distinct parts: a temporal change graph showing the first parameter over time, and a correlation graph showing the relationship between the first and second parameters. This segmentation allows each graph to serve a specific evaluation purpose, resolving the contradiction between simple display and accurate state evaluation.
Solution Approach 2:
Each graph is designed with specific local quality characteristics: the temporal change graph focuses on time-based trends with clear time-axis labeling, while the correlation graph focuses on parameter relationships with appropriate scaling. This localized optimization makes each display element interpretable while maintaining overall evaluation accuracy.
3Ease of operation
If approximate functions are calculated and displayed for comparison, then intuitive visual evaluation is enabled, but calculation complexity increases
Solution Approach 1:
The patent replaces direct numerical comparison with visual graphical representation of approximate functions. Instead of requiring users to manually compare parameter values across time periods, the system calculates approximate functions and displays them as visual curves, enabling intuitive evaluation while the calculation complexity is handled automatically by the processing device.
Data Source
AI summary
A state display device 100 includes a display device 30 for displaying a temporal change of a first parameter representing an operation state of a thermal power generation facility 10, and a correlation between the first parameter and a second parameter representing an operation state of the thermal power generation facility 10, an input device 70 for respectively selecting and inputting a first period t1 and a second period t2 different from the first period t2 in the temporal change of the first parameter, and a processing device 50. The processing device 50 is configured to display the temporal change of the first parameter on the display device 30, and to display, on the display device 30, the correlation between the first parameter and the second parameter in each of the first period t1 and the second period t2 input via the input device 70.