Regulating valve state alarm monitoring method and related device

Abstract

The invention discloses a regulating valve state alarm monitoring method and a related device, and belongs to the field of power generation data acquisition and processing, the method comprises the following steps: acquiring regulating valve opening measuring point data at a DCS side of a power plant, and storing an opening value per second in the regulating valve opening measuring point data; on the basis of the opening value per second, after the adjusting valve opening gradient corresponding to the adjusting valve opening measuring point data is calculated, abnormal judgment is conducted on the state of the adjusting valve according to the second level, and an abnormal judgment result is obtained; and displaying the abnormity judgment result in a light word alarm form to complete alarm monitoring of the state of the regulating valve. The method can solve the problem that the opening data of the DCS side regulating valve cannot be effectively utilized due to the fact that existing regulating valve state judgment depends too much on artificial experience.

Description

Technical Field

[0001] This invention belongs to the field of power generation data acquisition and processing, specifically relating to an alarm monitoring method and related device for regulating valve status. Background Technology

[0002] In a power plant's production system, control valves are critical infrastructure equipment, and their operational stability directly affects the safety and continuity of the entire production process. If a control valve malfunctions and is not detected and addressed in a timely manner, it can easily trigger systemic failures, leading to serious safety hazards and posing a significant threat to production equipment, personnel safety, and even the overall operational efficiency of the power plant.

[0003] Currently, power plants employ relatively simplistic methods for assessing the status of control valves. On-site operations typically rely on operators continuously monitoring and manually recording data. This manual approach leads to excessive human resource consumption and labor costs. Furthermore, because manual assessments heavily depend on operator experience, inexperience or negligence can easily result in misjudgments, compromising accuracy and reliability. Additionally, existing methods merely record control valve operating data without in-depth data analysis or mining. Moreover, the power plant's distributed control system (DCS) lacks corresponding modules for control valve status monitoring and analysis, further increasing labor costs. In conclusion, existing methods for assessing the status of power plant control valves suffer from drawbacks including wasted human resources, insufficient accuracy, and low data utilization. Summary of the Invention

[0004] The purpose of this invention is to provide an alarm monitoring method and related device for the status of a control valve, so as to solve the problem that the current control valve status judgment relies too much on human experience, resulting in the ineffective use of control valve opening data on the DCS side.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Firstly, an alarm monitoring method for the status of a regulating valve includes the following steps: Collect control valve opening measurement data from the DCS side of the power plant and store the opening value per second in the control valve opening measurement data. Based on the opening value per second, the valve opening gradient corresponding to the valve opening measurement point data is calculated, and the valve state is judged for anomalies at the second level to obtain the anomaly judgment result. The anomaly detection results are displayed as light alarms to complete the alarm monitoring of the regulating valve status.

[0006] In some implementations, the data acquisition frequency of the regulating valve opening measurement point on the DCS side of the power plant is 1 second.

[0007] In some implementations, the step of calculating the control valve opening gradient corresponding to the control valve opening measurement point data based on the per-second opening change value specifically includes: The valve opening gradient for the current second is obtained by subtracting the opening value of the previous second from the opening value of the current second and dividing by the time difference between the current second and the previous second. Repeat the above steps to obtain several of the aforementioned regulating valve opening gradients.

[0008] In some embodiments, the step of performing anomaly judgment on the state of the regulating valve on a second-by-second basis to obtain the anomaly judgment result specifically includes: The preset normal gradient range is ±X%, and X% is the preset normal gradient threshold. If the opening gradient of the regulating valve exceeds +X%, the state of the regulating valve is determined to be positively abnormal. When the opening gradient of the regulating valve is lower than -X%, the state of the regulating valve is determined to be negatively abnormal. If the opening gradient of the regulating valve approaches X% consecutively within a preset number of times, then the regulating valve is determined to be in an abnormal state.

[0009] In some implementations, the anomaly detection result is displayed as an optical character alarm on the SIS web publishing terminal; The step of collecting control valve opening measurement data from the power plant's DCS side and storing the opening value per second from the control valve opening measurement data specifically includes: The control valve opening measurement data is transmitted from the DCS-side interface unit to the SIS-side interface unit via a network gateway, and then stored in the SIS (Supervisory Information System) real-time database via the network gateway and firewall.

[0010] Secondly, an alarm monitoring system for the status of a regulating valve includes: The data acquisition and storage module is used to acquire the control valve opening measurement point data on the DCS side of the power plant, and store the opening value per second in the control valve opening measurement point data. The gradient calculation and anomaly judgment module is used to calculate the control valve opening gradient corresponding to the control valve opening measurement point data based on the opening value per second, and then perform anomaly judgment on the control valve state on a second-by-second basis to obtain the anomaly judgment result. The light alarm module is used to display the abnormal judgment result in the form of light alarm, so as to complete the alarm monitoring of the regulating valve status.

[0011] In some implementations, data transmission between the data acquisition and storage module, the gradient calculation and anomaly detection module, and the optical alarm module adopts the standard OPC DA protocol or OPC-UA protocol.

[0012] Thirdly, an electronic device includes a memory, a processor, and a computer program stored in the memory and executable in the processor, wherein the processor, when executing the computer program, implements the steps of the alarm monitoring method for the state of a regulating valve.

[0013] Fourthly, a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the alarm monitoring method for the state of a regulating valve.

[0014] Fifthly, a computer program product comprising a computer program that, when executed by a processor, implements the steps of the alarm monitoring method for the state of a regulating valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an alarm monitoring method for the status of control valves. By collecting control valve opening measurement data from the power plant's DCS side and storing the opening value per second, the method calculates the control valve opening gradient and performs anomaly judgments on the control valve status at the second level. This replaces the traditional manual judgment mode that relies on continuous monitoring by operators. This process fully utilizes the control valve opening data from the DCS side for alarm monitoring, eliminating the need for real-time manual intervention, significantly reducing manpower requirements, lowering the power plant's labor costs, and solving the problem of wasted human resources in existing technologies.

[0016] Furthermore, this invention calculates the opening gradient based on the opening value per second, and completes second-level anomaly judgment through a preset normal gradient range (±X%) and continuous anomaly judgment rules. That is, when the control valve opening gradient exceeds +X%, the control valve state is judged as positively abnormal; when the control valve opening gradient is lower than -X%, the control valve state is judged as negatively abnormal; when the control valve opening gradient is close to X% for a consecutive preset number of times, the control valve state is judged as abnormal. This method eliminates the reliance on human experience and avoids misjudgments caused by insufficient operator experience or negligence, making the anomaly judgment of the control valve state more objective and accurate, enabling timely detection of potential faults, thereby reducing the risk of systemic failures and ensuring the safety and continuity of the production process.

[0017] Furthermore, this invention transmits the control valve opening measurement data from the DCS-side interface machine to the SIS-side interface machine via a network gateway, and then stores it in the SIS real-time database via the network gateway and firewall in sequence. This realizes the structured storage and in-depth utilization of the control valve opening data, changing the traditional situation of simply recording data without exploring its value.

[0018] Furthermore, the anomaly detection results of this invention are displayed as light-based alarms on the SIS web platform, ensuring that relevant personnel can quickly obtain anomaly information and shortening the time for fault detection and response. In addition, data transmission between system modules uses standard OPC DA or OPC-UA protocols, ensuring the stability and compatibility of data interaction, improving the intelligence level and operational efficiency of the monitoring system, and providing strong support for the efficient operation and maintenance of power plants. Attached Figure Description

[0019] Figure 1 A detailed flowchart of an alarm monitoring method for the status of a regulating valve provided in an embodiment of the present invention; Figure 2 This is a data flow diagram illustrating the monitoring of the control valve in an embodiment of the present invention. Figure 3 A flowchart of an alarm monitoring method for the status of a regulating valve provided by the present invention; Figure 4 This is a structural diagram of an alarm monitoring system for the status of a regulating valve provided in an embodiment of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings. The content described herein is for explanation rather than limitation of the present invention.

[0021] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of this invention are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, systems, products, or devices.

[0022] Combination Figure 1 and Figure 3 This embodiment provides an alarm monitoring method for the status of a regulating valve, including the following steps: Step 1: Real-time data acquisition and storage: Real-time automatic acquisition of valve opening measurement points on the DCS system side is achieved through the following process: Using power industry standard transmission protocols such as OPC-UA, the valve opening measurement point data is transmitted from the DCS interface unit to the SIS acquisition interface unit via a network gateway. After passing through the acquisition interface unit, the data is stored in the SIS real-time database via a forward network gateway and a firewall. The forward network gateways all utilize equipment that meets power production requirements; the network gateway is a type of isolation device. The data acquisition frequency is 1 second.

[0023] Step 2: Use a preset algorithm to judge abnormal states on a second-by-second basis on the control valve opening measurement data; The system extracts control valve opening measurement points from the database. Assuming a measurement point is FM001KD, the gradient of this point is calculated, which is the change in opening per second. This is achieved by subtracting the opening value of the previous second from the current second's opening value, then dividing by the time difference. The result is the gradient for that second, which is stored in the SIS database. The gradient reflects the rate of change of the control valve opening per second; it indicates how fast the valve opening changes. A positive gradient value indicates an increase in valve opening, while a negative value indicates a decrease.

[0024] The gradient is obtained by subtracting the opening degree from the opening degree of the previous second and dividing by the time interval, instead of using curve fitting. This is because for regular second-level data, directly calculating the gradient using the difference between adjacent points is simple and can accurately reflect real-time changes, fully meeting the needs for judging opening anomalies (such as sudden changes).

[0025] Next, the criteria for anomaly judgment are further determined. Based on the actual working conditions and physical characteristics of the valve, the normal gradient range is set to ±X%, and X% is the preset normal gradient threshold. In this embodiment, X% is set to 2%, for example, under normal circumstances, the change in opening degree per second does not exceed ±2%. When the calculated gradient value exceeds +2%, it is a positive anomaly (the opening degree increases too quickly); when it is below -2%, it is a negative anomaly (the opening degree decreases too quickly). Several consecutive instances of approaching the threshold can also be regarded as an anomaly. The number of consecutive instances is preset according to the actual situation.

[0026] Step 3: The anomaly detection result is displayed as an illuminated alarm, specifically: After determining the abnormality of the control valve, if there is no abnormality in the gradient change of the control valve, the process will end directly. If there is an abnormal gradient change in the control valve, the abnormal control valve will be displayed as an optical alarm on the SIS system web publishing terminal, which intuitively shows the equipment status and effectively helps operators to identify equipment abnormalities in advance and take corresponding measures to deal with them until the optical alarm disappears.

[0027] This embodiment ensures the timeliness and integrity of data through real-time data acquisition and storage, providing a solid foundation for subsequent anomaly detection. A gradient algorithm is used to analyze the rate of change of the control valve opening, and abnormal states are identified by comparing the gradient value with a preset normal range. This method can promptly detect abnormal changes in the control valve, avoiding potential safety hazards caused by untimely manual monitoring, and improving operational efficiency and safety.

[0028] The data acquisition frequency for the control valve opening measurement points on the power plant's DCS side is 1 second. This high-frequency data acquisition ensures the monitoring system's response speed, making the detection of abnormal conditions more timely. The 1-second acquisition frequency can capture instantaneous changes in the control valve opening, which is crucial for rapid response to anomalies. This high-frequency acquisition helps operators quickly understand the control valve's status and reduces errors caused by information delays. This embodiment achieves effective monitoring of the control valve's status by setting a reasonable gradient threshold. Anomaly detection based on gradient values ​​adheres to the control valve's physical characteristics and safe operating procedures. This method can accurately distinguish between normal operation and abnormal states, reducing false alarm rates and improving the reliability of the alarm system.

[0029] The data flow of the above alarm monitoring methods is as follows: Figure 2 As shown, the control valve opening measurement data from the DCS-side interface machine is collected from the production area via the SIS-side interface machine, passing through the firewall and forward gateway, and stored in the SIS database server. The computing server retrieves the measurement data from the database, uses a gradient algorithm to predict abnormal trends, and then... Figure 1 The process shown will display the obtained control valves with abnormal operating trends as light-text alarms on the web publishing server.

[0030] like Figure 4 As shown, this embodiment provides an alarm monitoring system for the status of a regulating valve, including: The data acquisition and storage module is used to acquire control valve opening measurement point data on the DCS side of the power plant and store the opening value per second in the control valve opening measurement point data. The gradient calculation and anomaly detection module is used to calculate the control valve opening gradient corresponding to the control valve opening measurement point data based on the opening value per second, and then perform anomaly detection on the control valve status at the second level to obtain the anomaly detection result. The light alarm module is used to display the abnormal judgment results in the form of light alarms, and to complete the alarm monitoring of the regulating valve status.

[0031] This system can automatically and intelligently monitor the status of regulating valves, significantly improving the operation and maintenance management level of power plants.

[0032] Data transmission between the data acquisition and storage module, gradient calculation and anomaly detection module, and optical alarm module adopts the standard OPC DA or OPC-UA protocol, which facilitates system integration and maintenance. The OPC DA and OPC-UA protocols provide a standardized data access mechanism, ensuring the real-time performance and reliability of data transmission. The application of this protocol simplifies inter-system communication and improves overall operating efficiency.

[0033] The module division in this embodiment of the invention is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the invention can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0034] The above embodiments provide an alarm monitoring method and system for the status of control valves, which solves the problem of low efficiency in manually judging the status of control valves and improves data availability. The more intuitive judgment results obtained after calculation by a specific gradient algorithm can reduce the probability of misjudgment, save labor costs, and enable operators to take countermeasures in advance when faced with abnormal changes in control valves, providing data support for the safe, reliable and economical operation of the unit.

[0035] This embodiment also provides a computer device, which includes a processor and a memory. The memory is used to store a computer program (in this embodiment, the computer program includes a computing component and an iterative component, capable of model calculation and model updating). The computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to realize the corresponding method flow or corresponding function. The processor described in this embodiment can be used for the operation of an alarm monitoring method for regulating valve status.

[0036] This embodiment also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the alarm monitoring method for regulating valve status in the above embodiment.

[0037] This embodiment also provides a computer program product, which includes a computer program that, when executed by a processor, implements the corresponding steps of the alarm monitoring method for the state of a regulating valve in the above embodiment.

[0038] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0039] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0040] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0041] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An alarm monitoring method for the status of a regulating valve, characterized in that, Includes the following steps: Collect control valve opening measurement data from the DCS side of the power plant and store the opening value per second in the control valve opening measurement data. Based on the opening value per second, the valve opening gradient corresponding to the valve opening measurement point data is calculated, and the valve state is judged for anomalies at the second level to obtain the anomaly judgment result. The anomaly detection results are displayed as light alarms to complete the alarm monitoring of the regulating valve status.

2. The alarm monitoring method for the status of a regulating valve according to claim 1, characterized in that, The data acquisition frequency of the regulating valve opening measurement point on the DCS side of the power plant is 1 second.

3. The alarm monitoring method for the status of a regulating valve according to claim 1, characterized in that, The step of calculating the control valve opening gradient corresponding to the control valve opening measurement point data based on the per-second opening change value specifically includes: The valve opening gradient for the current second is obtained by subtracting the opening value of the previous second from the opening value of the current second and dividing by the time difference between the current second and the previous second. Repeat the above steps to obtain several of the aforementioned regulating valve opening gradients.

4. The alarm monitoring method for the status of a regulating valve according to claim 1, characterized in that, The step of performing anomaly judgment on the state of the control valve in seconds and obtaining the anomaly judgment result specifically includes: The preset normal gradient range is ±X%, and X% is the preset normal gradient threshold. If the opening gradient of the regulating valve exceeds +X%, the state of the regulating valve is determined to be positively abnormal. When the opening gradient of the regulating valve is lower than -X%, the state of the regulating valve is determined to be negatively abnormal. If the opening gradient of the regulating valve approaches X% consecutively within a preset number of times, then the regulating valve is determined to be in an abnormal state.

5. The alarm monitoring method for the status of a regulating valve according to claim 1, characterized in that, The anomaly detection results are displayed as LED alerts on the SIS web publishing platform; The step of collecting control valve opening measurement data from the power plant's DCS side and storing the opening value per second from the control valve opening measurement data specifically includes: The control valve opening measurement data is transmitted from the DCS-side interface unit to the SIS-side interface unit via the network gateway, and then stored in the SIS real-time database via the network gateway and firewall in sequence.

6. An alarm monitoring system for the status of a regulating valve, characterized in that, include: The data acquisition and storage module is used to acquire the control valve opening measurement point data on the DCS side of the power plant, and store the opening value per second in the control valve opening measurement point data. The gradient calculation and anomaly judgment module is used to calculate the control valve opening gradient corresponding to the control valve opening measurement point data based on the opening value per second, and then perform anomaly judgment on the control valve state on a second-by-second basis to obtain the anomaly judgment result. The light alarm module is used to display the abnormal judgment result in the form of light alarm, so as to complete the alarm monitoring of the regulating valve status.

7. The alarm monitoring system for the status of a regulating valve according to claim 6, characterized in that, Data transmission between the data acquisition and storage module, the gradient calculation and anomaly detection module, and the optical alarm module adopts the standard OPC DA protocol or OPC-UA protocol.

8. An electronic device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable in the processor. When the processor executes the computer program, it implements the steps of the alarm monitoring method for the state of a control valve as described in any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the alarm monitoring method for the state of a regulating valve as described in any one of claims 1 to 5.

10. A computer program product, the computer program product comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the alarm monitoring method for the state of a regulating valve as described in any one of claims 1 to 5.

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