Anti-seismic test response spectrum identification method, electromechanical equipment anti-seismic capacity analysis method and equipment
A technology of seismic test and identification method, applied in character and pattern recognition, computer parts, instruments, etc., can solve the problems of inability to be fragile, many interference items, and heavy reading workload, etc., to improve efficiency and versatility. Strong, Accurately Recognized Effects
Pending Publication Date: 2022-04-15
CHINA NUCLEAR POWER ENG CO LTD
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The workload of spectrum reading is heavy, and the reading accuracy is poor. Manually recording results is not conducive to storage and reuse, and it is not conducive to automatic calculation with software
However, traditional map recognition software is mostly based on conventional charts. The recognition rate of the seismic test spectrum that usually uses logarithmic coordinates and has a lot of interference information is not high, and the read values cannot correspond to the frequency points of the seismic requirement spectrum. It is impossible to compare TRS and RRS, and it is impossible to directly calculate the subsequent vulnerability
[0004] In traditional software recognition, it is impossible to increase the image recognition function for a specific frequency; secondly, using existing mathematical graphics analysis software, in the process of extracting curve features and separating background grids and curves, it is necessary to clearly distinguish curves and coordinate grids , but the grid density of the seismic test spectrum is high, and it is highly superimposed on the response spectrum curve, the color of the grid is the same as that of the curve, and there are many interference items, so it is difficult to achieve a good recognition effect
Moreover, due to the various types of anti-seismic equipment in nuclear power plants, the time for conducting anti-seismic tests and the actual laboratories for anti-seismic tests are different. The response spectra provided by laboratories at different times and in different countries and regions often have large differences. The test response spectrum The format of the format is quite different, and the existing map recognition software cannot solve this problem
[0005] In addition, the existing mathematical graphics analysis software can only generate a coordinate system according to the type of coordinate axes during the image recognition process, and can only recognize the image according to the established image recognition density during the image recognition process. Adaptively modify or adjust the image recognition points according to actual calculation requirements, which cannot meet the reading requirements for specific frequency points in the process of calculating the vulnerability of electromechanical equipment in nuclear power plants. Get the acceleration value of the frequency point of interest
[0006] Moreover, the existing technical means cannot provide a full-process solution, and cannot realize the identification, storage, seismic analysis and result reuse of the test response spectrum; because the same set of equipment may be used in different nuclear power plants or in different rooms of the same nuclear power plant Therefore, the requirements for the multiplexing of the test spectrum reading results are relatively high, and the existing technical means cannot provide the multiplexing function, resulting in repeated work when multiple nuclear power plants or workshops analyze the same type of equipment.
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[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0044] The abscissa of the seismic test spectrum for electromechanical equipment in a nuclear power plant is the frequency, and the ordinate is the seismic acceleration value (for example image 3 ). According to the calculation requirements of the seismic vulnerability of electromechanical equipment, in the calculation process, all peaks in the test response spectrum should be accurately identified first. For example, the curve can be traversed from low to high according to the abscissa, all peaks in the ordinate can be identified and marked, and their corresponding acceleration value sa-peak and...
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The invention relates to an anti-seismic test response spectrum identification method, a nuclear power plant electromechanical equipment anti-seismic capacity analysis method and equipment. The problems that in the prior art, custom setting cannot be achieved, a large number of spectrums are still read manually, the spectrum reading precision is poor, and the method cannot be directly applied to follow-up vulnerability degree calculation are solved. The method comprises the following steps: identifying the characteristics of an anti-seismic test response spectrum curve, separating the response spectrum curve from a background grid, associating an identified response spectrum image with an adaptive coordinate axis network, automatically identifying a plurality of peak acceleration values and corresponding frequencies meeting conditions in an original response spectrum, and automatically identifying key frequencies and acceleration values. And data input is provided for subsequent reaction spectrum peak clipping processing. The method can effectively improve the processing efficiency and accuracy of the original response spectrum in the vulnerability analysis work of the electromechanical equipment, and can be widely applied to the vulnerability analysis of the seismic PSA related electromechanical equipment of the nuclear power plant.
Description
technical field [0001] The invention belongs to the anti-seismic ability analysis technology of electromechanical equipment, and in particular relates to an anti-seismic test response spectrum identification method, an anti-seismic ability analysis method and equipment of electromechanical equipment. Background technique [0002] The seismic capability analysis of electromechanical equipment is the process of evaluating the seismic vulnerability of electromechanical equipment in nuclear power plants. It is a key part of the assessment of weak links in seismic design and an important part of the probabilistic safety analysis of the whole plant. Due to its own characteristics, the anti-seismic performance of electromechanical equipment is mostly verified by anti-seismic tests. When analyzing the anti-seismic capability of electromechanical equipment, it is necessary to combine the test spectrum (TRS) used during the anti-seismic test of the equipment, read the anti-seismic acc...
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IPC IPC(8): G06K9/00
Inventor尚雪莲孙凤王贵弓振邦王冬梅王骥骁阎明姜博文王少杰郭欣
OwnerCHINA NUCLEAR POWER ENG CO LTD