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Redundant configuration measuring point optimization and improvement method

A technology of redundant configuration and measuring points, which is applied to parts, circuit devices, and emergency protection detection of emergency protection devices, can solve problems such as logical misoperations, achieve high adaptability, and reduce the probability of logical misoperations

Pending Publication Date: 2022-05-13
HUADIAN QUDONG POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the influence of the layout of the measuring points, it is relatively easy for two measuring points on the same side of the equipment to fail at the same time, resulting in logical misoperation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 of the present invention: a method for preferably improving the measuring point of redundant configuration, comprises the following steps:

[0027] S1, set 4 measuring points with redundant configuration, and record in the calculation software;

[0028] S2, calculate the absolute value of the median deviation between each measuring point and the other 3 measuring points through computing software;

[0029] S3, select the value with the largest deviation among the 4 measuring points, exclude the selected measuring point with the largest deviation, and calculate through the calculation software, the 3 measuring points with the smallest deviation among the 4 measuring points in the redundant configuration can be obtained point;

[0030] S4, realize the optimization of the 4 measuring points of the redundant configuration through the operation software "out of three" operation.

Embodiment 2

[0031] Embodiment 2 of the present invention: a method for preferably improving the measuring point of redundant configuration, comprises the following steps:

[0032] S1, set 4 measuring points with redundant configuration and record them in the computing software; 4 measuring points include measuring point A, measuring point B, measuring point C, and measuring point D;

[0033] S2, calculate the absolute value of the median deviation between each measuring point and the other 3 measuring points through computing software;

[0034] S3, select the value with the largest deviation among the 4 measuring points, exclude the selected measuring point with the largest deviation, and calculate through the calculation software, the 3 measuring points with the smallest deviation among the 4 measuring points in the redundant configuration can be obtained point;

[0035] S4, realize the optimization of the 4 measuring points of the redundant configuration through the operation software ...

Embodiment 3

[0036] Embodiment 3 of the present invention: a method for optimizing and improving the measuring point of redundant configuration, comprises the following steps:

[0037] S1, set 4 measuring points with redundant configuration and record them in the computing software; 4 measuring points include measuring point A, measuring point B, measuring point C, and measuring point D;

[0038] S2. Calculate the absolute value of the median deviation between each measuring point and the other 3 measuring points through the computing software; respectively calculate the median deviation between measuring point A, measuring point B, measuring point C, and measuring point D and the other 3 measuring points The absolute value of , then:

[0039] DevA = ABS(A-MEDIAN(B,C,D));

[0040] DevB=ABS(B-MEDIAN(A,C,D));

[0041] DevC=ABS(C-MEDIAN(A,B,D));

[0042] DevD = ABS(D-MEDIAN(A,B,C));

[0043] S3, select the value with the largest deviation among the 4 measuring points, exclude the selected...

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PUM

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Abstract

The invention discloses a method for optimizing and improving measuring points with redundancy configuration, which comprises the following steps of: firstly, setting four measuring points with redundancy configuration, and recording the four measuring points in operation software; then, respectively calculating the absolute value of the median deviation between each measuring point and the other three measuring points through operation software; thirdly, selecting a value with the maximum deviation in the four measuring points, excluding the selected measuring point with the maximum deviation, and calculating through operation software to obtain three measuring points with the minimum deviation in the four measuring points with redundancy configuration; finally, optimization of four measuring points of redundancy configuration is achieved through operation of operation software in the three-out-of-one operation. The four-measuring-point optimization scheme of redundancy configuration can work normally under various working conditions, compared with an original selection scheme, abnormal measuring points can be rapidly isolated, high adaptability is achieved, and the logic maloperation probability caused by measuring point faults is obviously reduced.

Description

technical field [0001] The invention relates to a method for optimizing and improving redundantly configured measuring points, which belongs to the technical field of thermal power generation. Background technique [0002] Important measuring points such as drum water level and furnace pressure in thermal power plant drum boilers are mostly used for automatic adjustment and interlock protection. In order to make the sampling of the measuring points more representative and avoid the malfunction of the automatic and protection logic due to the failure of a single measuring point , using redundant configuration of multiple measuring points, and through the logic operation of the control system, the selected output value is obtained for corresponding automatic adjustment and interlock protection. Therefore, the quality of the selected scheme will directly affect the reliability of automatic and protective devices, and it is of great significance to improve the reliability of the...

Claims

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Application Information

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IPC IPC(8): H02H1/00H02H3/00H02H3/05
CPCH02H1/0092H02H1/0007H02H3/006H02H3/05
Inventor 高晓晨徐涛李先超周国燚薛少凡张绍威
Owner HUADIAN QUDONG POWER GENERATION CO LTD