CN110878709B - Method for establishing jam recognition mechanism of steam turbine valve and jam recognition method - Google Patents
Method for establishing jam recognition mechanism of steam turbine valve and jam recognition method Download PDFInfo
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- CN110878709B CN110878709B CN201811028906.9A CN201811028906A CN110878709B CN 110878709 B CN110878709 B CN 110878709B CN 201811028906 A CN201811028906 A CN 201811028906A CN 110878709 B CN110878709 B CN 110878709B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/14—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
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Abstract
The invention provides a method for establishing a jamming identification mechanism of a steam turbine valve and a jamming identification method. The method for establishing the steam turbine valve jam recognition mechanism comprises the following steps: acquiring power plant operation data; extracting a valve control signal and a valve position feedback signal of the turbine valve for a period of time from the power plant operation data; calculating the difference value of the extracted valve control signal and the valve position feedback signal; performing data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed; and establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve. The technical scheme of the invention is beneficial to realizing early real-time monitoring and diagnosis of the jamming of the steam turbine valve, is convenient for popularization and application, further ensures stable and safe operation of the steam turbine unit, and avoids the occurrence of unplanned shutdown.
Description
Technical Field
The invention relates to the field of fault diagnosis of a steam turbine valve, in particular to a method for establishing a jamming identification mechanism of the steam turbine valve and a jamming identification method.
Background
The valve is one of key devices of an industrial system, and the system fluctuation can be caused by the abnormity or the failure of the valve, the shutdown of the device can be caused seriously, and the immeasurable economic loss is caused to enterprises. At present, the research and the application related to the problem of the valve jam of the steam turbine are rare in the prior art. In fact, early detection of the valve jam of the steam turbine has important significance for effectively ensuring safe and stable operation of the steam turbine, and effective measures can be taken more timely when the valve jam fault of the steam turbine is discovered earlier so as to avoid excessive economic loss.
Disclosure of Invention
In view of the above drawbacks of the prior art, the present invention provides a method for establishing a sticking recognition mechanism of a steam turbine valve and a sticking recognition method thereof, which are used to solve the problem of diagnosing a sticking fault of a steam turbine valve in the prior art.
In order to achieve the above and other related objects, the present invention provides a method for establishing a valve jam recognition mechanism of a steam turbine, comprising: acquiring power plant operation data; extracting a valve control signal and a valve position feedback signal of the turbine valve for a period of time from the power plant operation data; calculating the difference value of the extracted valve control signal and the valve position feedback signal; performing data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed; and establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve.
In an embodiment of the invention, after extracting the valve control signal and the valve position feedback signal of the turbine valve for a period of time from the power plant operation data, the method further comprises: resampling the valve control signal and the valve position feedback signal to enable sampling intervals to be the same; and performing wild point elimination processing on the valve control signal and the valve position feedback signal.
In an embodiment of the present invention, the analyzing the data of the difference value to determine the data characteristic of the difference value when the turbine valve is jammed includes: performing spectrum analysis and high-order statistic analysis on the difference value to obtain a spectrum, a power spectrum and a bicoherence coefficient of the difference value; and deducing and counting the frequency spectrum, the power spectrum and the data characteristics of the bicoherence coefficient of the difference value when the steam turbine valve is jammed at different times by using a method of hypothesis test and inductive summary.
In an embodiment of the present invention, after establishing the correspondence between the data characteristic and the turbine valve stuck fault, the method further comprises: and verifying the correctness of the data characteristics of the difference value when the turbine valve is jammed by contrasting the content of the power plant operation log or the sequence diagram.
In order to achieve the above objects and other related objects, the present invention provides a method for identifying a turbine valve jam, which is applied to an electronic device pre-stored with a mechanism for identifying a turbine valve jam; the identification mechanism comprises: when the steam turbine valve is jammed, the data characteristics of the difference value of the valve control signal and the valve position feedback signal of the steam turbine valve correspond to the jamming fault of the steam turbine valve; the method comprises the following steps: acquiring a valve control signal and a valve position feedback signal of a turbine valve, and calculating a difference value between the valve control signal and the valve position feedback signal; performing data analysis on the calculated difference to determine data characteristics of the calculated difference; comparing the determined data features with the data features in the identification mechanism; and if the comparison result is consistent, judging that the current turbine valve has a jamming fault.
In an embodiment of the present invention, after obtaining the valve control signal and the valve position feedback signal of the turbine valve, the method further includes: resampling the acquired valve control signal and valve position feedback signal to make the sampling intervals the same; and/or performing outlier rejection processing on the acquired valve control signal and the valve position feedback signal.
To achieve the above and other related objects, the present invention provides a system for establishing a valve jam recognition mechanism of a steam turbine, including: the input module is used for acquiring the operation data of the power plant; the processing module is used for extracting a valve control signal and a valve position feedback signal of the turbine valve for a period of time from the power plant operation data; calculating the difference value of the extracted valve control signal and the valve position feedback signal; performing data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed; and establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve.
In order to achieve the above objects and other related objects, the present invention provides a system for identifying a turbine valve jam, which is applied to an electronic device pre-stored with a mechanism for identifying a turbine valve jam; the identification mechanism comprises: when the steam turbine valve is jammed, the data characteristics of the difference value of the valve control signal and the valve position feedback signal of the steam turbine valve correspond to the jamming fault of the steam turbine valve; the system comprises: the input module is used for acquiring a valve control signal and a valve position feedback signal of a turbine valve; the processing module is used for calculating the difference value of the valve control signal and the valve position feedback signal of the obtained steam turbine valve; performing data analysis on the difference value to determine a data characteristic of the difference value; and comparing the determined data characteristics with the data characteristics in the identification mechanism, and if the comparison result is consistent, judging that the current turbine valve has a jam fault.
To achieve the above and other related objects, the present invention provides a storage medium, in which a computer program is stored, and the computer program is loaded and executed by a processor to implement the method for establishing the mechanism for identifying the valve jam of the steam turbine as described above, and/or to implement the method for identifying the valve jam of the steam turbine as described above.
To achieve the above and other related objects, the present invention provides an electronic device, comprising: a processor, and a memory; wherein the memory is for storing a computer program; the processor is used for loading and executing the computer program to enable the electronic equipment to execute the establishment method of the steam turbine valve jam recognition mechanism and/or realize the recognition method of the steam turbine valve jam.
As described above, the method for establishing the mechanism for identifying the jamming of the steam turbine valve and the method for identifying the jamming of the steam turbine valve help to realize early real-time monitoring and diagnosis of the jamming of the steam turbine valve, are convenient to popularize and apply, further ensure stable and safe operation of a steam turbine unit, and avoid the occurrence of unplanned shutdown conditions.
Drawings
Fig. 1 is a flow chart illustrating a method for establishing a turbine valve jam recognition mechanism according to an embodiment of the present invention.
Fig. 2 is a block diagram of a system for establishing a turbine valve jam recognition mechanism according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart illustrating a method for identifying a valve jam of a steam turbine according to an embodiment of the present invention.
Fig. 4 is a block diagram of a turbine valve jam recognition system according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1, the embodiment provides a method for establishing a turbine valve jam recognition mechanism, including the following steps:
s11: and acquiring the operating data of the power plant.
A power system can generate a large amount of power data in the daily operation process, and relates to each link of power generation, power transmission, power transformation, power distribution, power utilization, scheduling and the like. In this embodiment, step S11 obtains operation data generated by actual operation of the power plant from a certain power plant system.
S12: and extracting a valve control signal and a valve position feedback signal of the turbine valve for a period of time from the power plant operation data. The valve control signal is a command signal for controlling the opening, closing, or adjusting of the valve itself or a part thereof. The valve position feedback signal refers to a response signal for reflecting the opening, closing, or adjustment of the valve itself or some part thereof.
In another embodiment, it is preferable that the method further includes a data preprocessing step after step S12, such as: the valve control signal and the valve position feedback signal are resampled to enable sampling intervals to be the same, wild point rejection processing is conducted on the valve control signal and the valve position feedback signal, and the like, so that the purposes of improving data mining quality and reducing the time required by mining are achieved.
S13: and calculating the difference value of the extracted valve control signal and the valve position feedback signal.
S14: and carrying out data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed.
In detail, in this embodiment, first, a spectrum analysis and a high order statistic analysis are performed on the difference value to obtain a spectrum, a power spectrum, and a bicoherence coefficient of the difference value, where the bicoherence coefficient describes a correlation between different frequency points in a frequency band of interest, a numerical range is [0,1], 0 represents that two frequency points are independent from each other, and 1 represents that two frequency points are correlated; secondly, by using a method of hypothesis testing and inductive summarization, the frequency spectrum, the power spectrum and the data characteristics of the bicoherence coefficient of the difference value when the steam turbine valve is jammed at different time are deduced and counted.
S15: and establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve.
It should be understood by those skilled in the art that the data characteristic of the difference value when the turbine valve is not jammed can naturally be correlated with the non-jamming fault of the turbine valve, and thus serves as another part of the recognition mechanism of the jamming of the turbine valve.
In another embodiment, preferably, the method further includes, after step S15: and verifying the correctness of the data characteristics of the difference value when the turbine valve is jammed by contrasting the content of the electric power operation log or observing the time sequence diagram. If the verification result shows that the correctness of the data characteristics of the difference value is wrong when the turbine valve is jammed, timely taking corrective measures, such as: and correcting the data characteristic of the difference value when the turbine valve is jammed by taking the content of the electric power operation log or the timing diagram as a standard.
Referring to fig. 2, the present embodiment provides a system 200 for establishing a turbine valve jam recognition mechanism. The system 200 is installed as software in an electronic device (e.g., a desktop, a laptop, a smart phone, etc.), and includes: an input module 201 and a processing module 202. The input module 201 is used for executing the step S11 in the implementation of the method, and the processing module 202 is used for executing the steps S12 to S15 in the implementation of the method.
The steam turbine valve jam recognition mechanism can be established by the establishing method of the steam turbine valve jam recognition mechanism. The identification mechanism comprises: when the turbine valve takes place the bite the data characteristic of the difference of the valve control signal of turbine valve and valve position feedback signal with the corresponding relation between the bite trouble takes place for the turbine valve, preferred, still include: and when the turbine valve is not jammed, the corresponding relation between the data characteristics of the difference value of the valve control signal and the valve position feedback signal of the turbine valve and the jam fault of the turbine valve is formed.
Referring to fig. 3, the present embodiment provides a method for identifying a turbine valve jam, which is applied to an electronic device (e.g., a desktop, a laptop, a smart phone, etc.) pre-stored with any one of the foregoing identification mechanisms, and includes the following steps:
s31: and acquiring a valve control signal and a valve position feedback signal of the steam turbine valve to be identified, and calculating a difference value between the valve control signal and the valve position feedback signal.
In another embodiment, it is preferable that the method further includes a data preprocessing step after step S31, for example: the valve control signal and the valve position feedback signal are resampled to enable sampling intervals to be the same, wild point rejection processing is conducted on the valve control signal and the valve position feedback signal, and the like, so that the purposes of improving data mining quality and reducing the time required by mining are achieved.
S32: and performing data analysis on the calculated difference to determine the data characteristics of the calculated difference.
In detail, in this embodiment, first, a spectrum analysis and a high order statistic analysis are performed on the difference value to obtain a spectrum, a power spectrum, and a bicoherence coefficient of the difference value; secondly, by using a method of hypothesis testing and inductive summarization, the frequency spectrum, the power spectrum and the data characteristics of the bicoherence coefficient of the difference value when the steam turbine valve is jammed at different time are deduced and counted. Hypothesis testing is a statistical deduction method for deducing a population from a sample according to hypothesis conditions, and the specific process is as follows:
1. according to the distribution condition of the power plant operation data, the double coherence coefficient of the difference value can be considered to obey chi-square distribution;
2. the test hypothesis H0 is proposed: calculating the difference between the obtained two-coherence coefficient sample and the population due to sampling errors; alternative assumptions H1: calculating the essential difference between the obtained two-coherence coefficient sample and the total;
3. setting the confidence level to be alpha, namely when the test is assumed to be true, the probability of being rejected wrongly is alpha;
4. calculating the size of the double coherence coefficients of the sample, and obtaining a probability p value of the establishment of a test hypothesis according to chi-square distribution; if p > α, the H0 hypothesis is not rejected, if p < = α, H0 is rejected, and H1 is accepted. (the p-value can be obtained by looking up a table)
If H0 is rejected and H1 is accepted in the process of hypothesis testing, the steam turbine valve is blocked.
In the actual engineering practice process, due to system/equipment differences, parameters need to be adjusted in the hypothesis testing design process, and the part needs to be summarized according to actual requirements so as to match the characteristics of different equipment.
S33: and comparing the determined data characteristics with the data characteristics in the identification mechanism, and judging whether the comparison results are consistent. If the comparison result is consistent, executing step S34; otherwise, step S35 is executed.
S34: and judging that the current turbine valve has jamming faults.
S35: and judging that the current turbine valve has no jamming fault.
Referring to fig. 4, the present embodiment provides a turbine valve jam recognition system 400. The system 400 is installed in an electronic device (e.g., a desktop, a portable computer, a smart phone, etc.) as a piece of software, and includes: an input module 401 and a processing module 402. The input module 401 is configured to obtain a valve control signal and a valve position feedback signal of a turbine valve to be identified, and the processing module 402 is configured to calculate a difference between the obtained valve control signal and the obtained valve position feedback signal of the turbine valve, and is configured to execute steps S32 to S35 in the implementation of the foregoing method.
Those skilled in the art will appreciate that the partitioning of the various modules of the jamming mechanism building system 200 and the recognition system 400 is merely a logical functional partitioning, and the actual implementation may be fully or partially integrated into one or more physical entities. And the modules can be realized in a form that all software is called by the processing element, or in a form that all the modules are realized in a form that all the modules are called by the processing element, or in a form that part of the modules are called by the hardware. For example, the processing module 202 may be a separate processing element, or may be implemented by being integrated in a chip, or may be stored in a memory in the form of program code, and the function of the processing module 202 is called and executed by a certain processing element. Other modules are implemented similarly. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In addition, the present invention further includes a storage medium and an electronic device, and the technical features in the foregoing embodiments may be applied to the storage medium embodiment and the electronic device embodiment, so that repeated descriptions are omitted.
The storage medium includes: various media capable of storing program codes, such as ROM, RAM, magnetic disk or optical disk, etc., are stored with computer programs, which when being loaded and executed by a processor, implement all or part of the steps of the method for establishing the mechanism for identifying the jamming of the turbine valve and/or all or part of the steps of the method for identifying the jamming of the turbine valve described in the foregoing embodiments.
The electronic device is a device, preferably a computer, comprising at least a processor (CPU/MCU/SOC), a memory (ROM/RAM). In particular, the memory stores a computer program, and the processor implements all or part of the steps of the method for establishing the mechanism for identifying the seizure of the turbine valve and/or all or part of the steps of the method for identifying the seizure of the turbine valve according to the foregoing embodiments when the computer program is loaded and executed.
In conclusion, the method for establishing the mechanism for identifying the jamming of the steam turbine valve and the method for identifying the jamming are beneficial to realizing early real-time monitoring and diagnosis of the jamming of the steam turbine valve, are convenient to popularize and apply, further ensure stable and safe operation of a steam turbine unit, avoid the occurrence of unplanned shutdown conditions, effectively overcome various defects in the prior art and have high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A method for establishing a steam turbine valve jam recognition mechanism is characterized by comprising the following steps:
acquiring power data;
extracting a valve control signal and a valve position feedback signal of the turbine valve in a period of time from the electric power data;
calculating the difference value of the extracted valve control signal and the valve position feedback signal;
performing data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed;
establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve; the identification mechanism comprises: the method comprises the steps of obtaining the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve when the steam turbine valve is jammed, obtaining the corresponding relation between the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve and the jamming fault of the steam turbine valve when the steam turbine valve is jammed, and obtaining the corresponding relation between the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve and the jamming fault of the steam turbine valve when the steam turbine valve is not jammed.
2. The method of claim 1, wherein after extracting from the power data a valve control signal and a valve position feedback signal for the turbine valve over a period of time, the method further comprises:
resampling the valve control signal and the valve position feedback signal to enable the sampling intervals to be the same; and/or
And performing wild point elimination processing on the valve control signal and the valve position feedback signal.
3. The method of claim 1, wherein performing a data analysis of the difference to determine a data characteristic of the difference in the event of a jam of the turbine valve comprises:
performing spectrum analysis and high-order statistic analysis on the difference value to obtain a spectrum, a power spectrum and a double correlation coefficient of the difference value;
and deducing and counting the frequency spectrum, the power spectrum and the data characteristics of the double correlation coefficients of the difference value when the steam turbine valve is jammed at different times by using a method of hypothesis test and inductive summary.
4. The method of claim 1, wherein after establishing a correspondence between the data signature and the turbine valve stuck fault, the method further comprises: and verifying the correctness of the data characteristics of the difference value when the turbine valve is jammed by contrasting the contents of the electric power operation log or the time sequence diagram.
5. The method for identifying the jamming of the steam turbine valve is characterized by being applied to electronic equipment with a steam turbine valve jamming identification mechanism stored in advance; the identification mechanism comprises: the method comprises the following steps of obtaining a corresponding relation between data characteristics of a difference value of a valve control signal and a valve position feedback signal of a steam turbine valve when the steam turbine valve is jammed and the jamming fault of the steam turbine valve, and obtaining a corresponding relation between data characteristics of a difference value of the valve control signal and the valve position feedback signal of the steam turbine valve when the steam turbine valve is not jammed and the non-jamming fault of the steam turbine valve; the method comprises the following steps:
acquiring a valve control signal and a valve position feedback signal of a turbine valve, and calculating a difference value between the valve control signal and the valve position feedback signal;
performing data analysis on the calculated difference to determine data characteristics of the calculated difference;
comparing the determined data features with the data features in the identification mechanism; and if the comparison result is consistent, judging that the current turbine valve has a jamming fault.
6. The method of claim 5, wherein after obtaining the valve control signal and the valve position feedback signal for the turbine valve, the method further comprises:
resampling the obtained valve control signal and the valve position feedback signal to enable sampling intervals to be the same; and/or
And carrying out wild point elimination processing on the acquired valve control signal and the valve position feedback signal.
7. A system for establishing a turbine valve jam recognition mechanism, comprising:
the input module is used for acquiring power data;
the processing module is used for extracting a valve control signal and a valve position feedback signal of the turbine valve in a period of time from the electric power data; calculating the difference value of the extracted valve control signal and the valve position feedback signal; performing data analysis on the difference value to determine the data characteristic of the difference value when the turbine valve is jammed; establishing a corresponding relation between the data characteristics and the jamming faults of the steam turbine valve, and taking the corresponding relation as an identification mechanism of the jamming of the steam turbine valve; the identification mechanism comprises: the method comprises the steps of obtaining the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve when the steam turbine valve is jammed, obtaining the corresponding relation between the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve and the jamming fault of the steam turbine valve when the steam turbine valve is jammed, and obtaining the corresponding relation between the data characteristics of the difference value between the valve control signal and the valve position feedback signal of the steam turbine valve and the jamming fault of the steam turbine valve when the steam turbine valve is not jammed.
8. A recognition system of the turbine valve jam is characterized in that the recognition system is applied to electronic equipment pre-stored with a turbine valve jam recognition mechanism; the identification mechanism comprises: the method comprises the following steps of obtaining a corresponding relation between data characteristics of a difference value of a valve control signal and a valve position feedback signal of a steam turbine valve when the steam turbine valve is jammed and the jamming fault of the steam turbine valve, and obtaining a corresponding relation between data characteristics of a difference value of the valve control signal and the valve position feedback signal of the steam turbine valve when the steam turbine valve is not jammed and the non-jamming fault of the steam turbine valve; the system comprises:
the input module is used for acquiring a valve control signal and a valve position feedback signal of a turbine valve;
the processing module is used for calculating the difference value of the valve control signal and the valve position feedback signal of the obtained steam turbine valve; performing data analysis on the difference value to determine a data characteristic of the difference value; and comparing the determined data characteristics with the data characteristics in the identification mechanism, and if the comparison result is consistent, judging that the current turbine valve has a jam fault.
9. A storage medium, in which a computer program is stored, which, when being loaded and executed by a processor, implements the method for establishing a steam turbine valve sticking recognition mechanism according to any one of claims 1 to 4, and/or implements the method for recognizing a steam turbine valve sticking according to any one of claims 5 to 6.
10. An electronic device, comprising: a processor, and a memory; wherein the content of the first and second substances,
the memory is used for storing a computer program;
the processor is configured to load and execute the computer program, so as to cause the electronic device to perform the method for establishing the steam turbine valve bite recognition mechanism according to any one of claims 1 to 4, and/or to implement the method for recognizing the steam turbine valve bite according to any one of claims 5 to 6.
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| CN114458823B (en) * | 2021-12-24 | 2023-03-17 | 珠海格力电器股份有限公司 | Method and device for determining state of valve, storage medium and electronic equipment |
| CN114509256A (en) * | 2021-12-29 | 2022-05-17 | 东方电气集团东方汽轮机有限公司 | Valve jamming online monitoring method based on valve lifting force and closing force |
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