Converter valve monitoring method and system

Abstract

The invention provides a converter valve monitoring method and system. The converter valve monitoring method comprises the following steps: acquiring converter valve fault message information and fault diagnosis information; constructing a fault information base according to the fault message information and the fault diagnosis information; and based on the fault information base, combining the model of the converter valve and the waveform file of the converter valve fault to demonstrate the fault development process of the converter valve. The converter valve is monitored through the monitoring module, faults and diagnosis information of the converter valve are recorded through the control module, the backtracking demonstration function of the fault information can be achieved through user operation, splitting of partial functions such as fault message information, fault diagnosis information and a model in system and time is broken through, and the system reliability is improved. Fault information, a physical model and an analysis result are combined, and intellectualization of operation and inspection of the converter valve is achieved.

Description

Technical Field

[0001] This application relates to the technical field of converter valves, and particularly to a converter valve monitoring method and system. Background Art

[0002] In the related art, the fault analysis of converter valves is often based on the messages of the converter valve control system. During the fault backtracking process, a large amount of analyzable data is concentrated in the system messages and the telemetry signals of the sub-module status of the converter valve. However, the status information and message information of the converter valve equipment are separated and cannot form an interactive whole, which is not conducive to intuitively restoring the fault process of the converter valve and increases the difficulty of fault analysis of the converter valve. Summary of the Invention

[0003] Embodiments of this application provide a converter valve monitoring method and system to solve the problem that the reliability of the evaluation of the converter valve status by the simulation platform in the related art is low and the guiding significance is small.

[0004] To solve the above problems, the technical solutions provided in this application are as follows:

[0005] In a first aspect, this application provides a converter valve monitoring method, including:

[0006] Obtain converter valve fault message information and fault diagnosis information;

[0007] Construct a fault information library according to the fault message information and the fault diagnosis information;

[0008] Based on the fault information library, demonstrate the fault development process of the converter valve in combination with the model of the converter valve and the waveform file of the converter valve fault.

[0009] In one embodiment, the obtaining of the converter valve fault message information and the fault diagnosis information includes:

[0010] Real-time monitor the working conditions of the sub-modules in the converter valve, and trigger the obtaining of the fault message information and the fault diagnosis information when the working conditions of the sub-modules change.

[0011] In one embodiment, the real-time monitoring of the working conditions of the sub-modules in the converter valve includes:

[0012] Real-time monitor the number of bypassed sub-modules and the number of damaged sub-modules in the converter valve.

[0013] In one embodiment, obtaining the converter valve fault message information includes: obtaining the fault cause message, access status message, and communication exception message of the converter valve.

[0014] In one embodiment, obtaining the fault diagnosis information of the converter valve includes: obtaining the message identification and associated component matching association information of the converter valve, fault telemetry and oscillographic data, and fault module ledger information.

[0015] In one embodiment, the building of the fault information library includes:

[0016] Entering the equipment ledger information of the converter valve, including entering the coding information of the converter valve tower and the sub-modules to which the valve tower belongs;

[0017] Entering the fault cause information of the sub-module, including entering the classification of the fault cause of the sub-module and the corresponding coding information;

[0018] Entering the equipment fault monitoring information, including entering the telemetry signal and telemetry parameter information corresponding to various faults;

[0019] Entering the corresponding relationship information between the equipment fault message and the component, including entering the relevant information of the association relationship between the full-cycle message from the start to the end of the fault and the components included in the sub-module.

[0020] In one embodiment, before demonstrating the fault development process of the converter valve based on the fault information library, in combination with the model of the converter valve and the waveform file of the converter valve fault, the converter valve monitoring method further includes:

[0021] Building the model of the converter valve;

[0022] Establishing the mapping relationship between the fault information library and the model;

[0023] Defining the operation instructions of the model according to the fault information library;

[0024] Setting the demonstration rules of the fault message information and the fault diagnosis information according to the operation instructions.

[0025] In one embodiment, the building of the model of the converter valve includes:

[0026] Building the converter valve structure model, completing the modeling of the sub-modules belonging to the converter valve according to a preset ratio, building the converter valve structure model according to the sub-module modeling, and configuring the valve tower and component attribute information according to the corresponding relationship between the component names in the sub-module, the abnormal components shown in the equipment fault message and the components in the sub-module model; and

[0027] Building the physical field model, and building the physical field model of the electric field strength, magnetic field strength and temperature distribution of the converter valve according to the loss of the sub-module and the telemetry input parameters of voltage and current.

[0028] In one embodiment, the completing the modeling of the sub-modules belonging to the converter valve according to a preset ratio includes:

[0029] Model the insulated double-gate transistor, bypass thyristor, DC capacitor, fast bypass switch, voltage-sharing resistor, energy-taking power supply board, main control board, drive board, optical fiber, and main current-carrying loop in a 1:1 ratio.

[0030] In one embodiment, demonstrating the fault development process of the converter valve based on the fault information library, in combination with the model of the converter valve and the waveform file of the converter valve fault includes:

[0031] Present the fault information in a list form according to the operation instruction;

[0032] Call the simulation cloud map of the physical field model and the waveform curve of the fault interval during the fault period according to the fault message information and fault diagnosis information;

[0033] Synchronously display the fault message, telemetry signal, telemetry status during the fault period, as well as the simulation cloud map of the physical field and the waveform curve of the fault interval on the model of the converter valve in chronological order.

[0034] In a second aspect, the present application provides a converter valve monitoring system, including:

[0035] A monitoring module, connected to the sub-module of the converter valve, configured to monitor the operating condition data of the converter valve in real time;

[0036] A control module, configured to build a model of the converter valve, and generate fault message information and fault diagnosis information and build a fault information library when the operating condition data changes;

[0037] A data collection module, configured to store the model and the fault information library;

[0038] The control module is further configured to call the fault information library from the data collection module according to an operation instruction, and demonstrate the fault development process of the converter valve in combination with the model of the converter valve.

[0039] In one embodiment, the operating condition data includes: the number of sub-modules and the number of damaged modules.

[0040] In one embodiment, the converter valve monitoring system further includes:

[0041] A trigger module, electrically connected to the control module, configured to generate the operation instruction in response to a user operation; and

[0042] A demonstration module, electrically connected to the control module, configured to display the model of the converter valve;

[0043] Wherein, the operation instruction is used to indicate the state of the model during different fault periods.

[0044] An embodiment of the present application provides a converter valve monitoring method and system. The converter valve monitoring method includes automatically collecting converter valve fault message information and fault diagnosis information; constructing a fault information database according to the fault message information and fault diagnosis information; and calling the fault information database and demonstrating the fault development process of the converter valve in combination with the model and waveform file of the converter valve. The present application monitors the converter valve through a monitoring module, records the faults and diagnosis information occurring in the converter valve through a control module, and can implement a backtracking and demonstration function of the fault information through user operations, breaking the fragmentation of some functions such as fault message information, fault diagnosis information, and models in the system and time, combining fault information, physical models, and analysis results, and realizing the intelligent operation and maintenance of the converter valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0046] Figure 1 It is a schematic flowchart of the converter valve monitoring method in the embodiment of the present application;

[0047] Figure 2 It is a schematic block diagram of the converter valve monitoring system in the embodiment of the present application;

[0048] Figure 3 It is a schematic block diagram of the converter valve in the embodiment of the present application.

[0049] Explanation of the reference numerals in the drawings:

[0050] 100, converter valve monitoring system; 110, monitoring module; 120, control module; 130, collection module; 140, trigger module; 150, demonstration module;

[0051] 200, converter valve; 210, sub-module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0053] Refer to Figure 1As shown, according to the first aspect of the present application, a monitoring method for a converter valve 200 is provided, including:

[0054] S10: Obtain the fault message information and fault diagnosis information of the converter valve 200.

[0055] In this step, the process of automatically collecting the fault message information and fault diagnosis information of the converter valve 200 is specifically as follows: The operating conditions of the sub-modules 210 in the converter valve 200 are monitored in real time. When the operating conditions of the sub-modules 210 change, the automatic collection function of the fault message information and fault diagnosis information is triggered.

[0056] It should be noted that the fault of the converter valve 200 in the present application refers to the fault of the sub-modules 210 in the converter valve 200. The sub-modules 210 are key devices in the converter valve 200, which are used to realize voltage synthesis and energy conversion. Each sub-module 210 contains multiple key devices, such as Insulate-Gate Bipolar Transistors (IGBTs), DC capacitors, bypass switches, and energy extraction power boards. Among them, the bypass switch can be used to implement the protection mechanism triggered when the sub-module 210 fails. When the devices in the sub-module 210 are damaged, the faulty sub-module can be isolated from the main circuit through the bypass switch, etc., which can avoid affecting the operation of the overall system. Therefore, the operating conditions of the sub-modules 210 include the number of damaged sub-modules (the number of black modules). A black module is a sub-module 210 that becomes completely ineffective due to communication interruption during the operation of the converter valve 200 and whose state cannot be monitored.

[0057] Similarly, the number of sub-modules connected can also be increased through the bypass switch. Therefore, the operating conditions of the sub-modules 210 also include the addition of sub-modules.

[0058] In this step, the fault message refers to the message sent by the valve control system of the converter valve 200 from the detection of a fault in the sub-module to the successful bypass of the sub-module 210. Among them, when the sub-module 210 is a normal operating sub-module 210, if the bypass switch can be closed normally, it indicates that the bypass of the sub-module 210 is successful. That is, the fault message refers to the whole process from the internal fault of the sub-module 210 triggering the protection mechanism to the completion of physical isolation. The fault message information includes the fault cause message, the access status message, and the communication exception message. Among them, the access status message mainly refers to the message indicating whether the bypass is successful or not. The sub-module fault starts from the sending of the bypass message. As the process of bypass success or failure progresses, the board of the sub-module 210 gradually loses power and communication problems occur, thereby gradually sending the fault cause message, the access status message, and the communication exception message. In some specific embodiments, in order to ensure reliability, two sets of identical monitoring systems are set up. The two systems will send the same fault message during the fault. Therefore, the actual number of messages is only half of the total messages of the system. The message lasts for 10 minutes and the number of messages is 12. Therefore, the number of messages involved in a single bypass process of a single system is approximately 5 to 6. Message recognition is carried out through message screening. Combining the system name and keywords, the five key messages belonging to the bypass fault are screened out, and the messages are associated with the secondary components of the sub-module 210 based on the association rules. The association rule table is shown in Table 1.

[0059] Table 1 Message and device association rules

[0060]

[0061] Correspondingly, the fault diagnosis information includes the message recognition and associated component matching association information, the fault remote signal and telemetry and waveform recording data, and the fault module ledger information. Among them, the remote signal data can include the switch quantity status of the bypass switch being turned on or off. The telemetry data can include analog quantity parameters such as the current and voltage of some devices. The waveform recording data can include waveform files during the fault, such as voltage waveforms or current waveforms, etc. The fault module ledger information can include information such as the number of the sub-module 210 and the valve tower position. The fault remote signal and telemetry and waveform recording data and the fault module ledger information are configured through the system platform.

[0062] It should be noted that the fault diagnosis information depends on the timing and content of the fault message. Through the message and device association rules, the mapping from the message to the specific component is realized. By integrating data such as remote signals, telemetry, and waveform recording, it is beneficial to convert isolated event logs into complete analysis conclusions that can guide operation and maintenance.

[0063] S20: Construct a fault information database according to the fault message information and the fault diagnosis information.

[0064] In this step, constructing the fault information database includes:

[0065] Enter the equipment ledger information of the converter valve 200, including entering the coding information of the valve tower of the converter valve 200 and the sub-module 210 to which the valve tower belongs;

[0066] Enter the fault cause information of the sub-module 210, including entering the classification of the fault cause of the sub-module 210 and the corresponding coding information;

[0067] Enter the equipment fault monitoring information, including entering the remote signaling quantities and remote measurement parameter information corresponding to various faults;

[0068] Enter the information on the correspondence between equipment fault messages and components, including entering the relevant information on the association relationship between the full-cycle messages from the start to the end of the fault and the components included in the sub-module 210.

[0069] It should be noted that after constructing the fault information database, the monitoring method of the converter valve 200 of the present application further includes:

[0070] S21: Construct a model of the converter valve 200;

[0071] In this step, specifically, it is necessary to construct a structural model and a physical field model of the converter valve 200.

[0072] To construct the structural model of the converter valve 200, it is necessary to complete the modeling of the sub-module 210 to which the converter valve 200 belongs according to a preset ratio, construct the structural model of the converter valve 200 based on the modeling of the sub-module 210, and configure the valve tower and component attribute information according to the component names in the sub-module 210, the correspondence between the equipment fault messages and the components in the sub-module, and the identity recognition codes corresponding to the components of each sub-module. In some specific embodiments, with reference to Figure 3 As shown, the sub-module 210 includes: insulated gate bipolar transistor, bypass thyristor, DC capacitor, fast bypass switch, voltage equalizing resistor, energy-taking power supply board, main control board, drive board, optical fiber, and main current-carrying loop for modeling. In this step, the components of the sub-module 210 will be modeled at a ratio of 1:1.

[0073] In some embodiments of the present application, the constructed structural model of the converter valve 200 is a three-dimensional high-fidelity model, that is, when constructing the model, it is necessary to emphasize the high-precision set restoration of the three-dimensional structure of the converter valve, which can be achieved by means such as high-resolution scanning. By constructing a three-dimensional high-fidelity model, the operating conditions of the converter valve can be more intuitively displayed.

[0074] To construct the physical field model, it is necessary to construct a physical field model of the electric field strength, magnetic field strength, and temperature distribution of the converter valve 200 according to the loss of the sub-module 210 and the remote measurement input parameters of voltage and current.

[0075] It should be noted that the finally completed model has functions such as model disassembly explosion demonstration, component position highlighting indication, attachment of ledger data and monitoring data, etc., and can realize operations such as magnification, reduction, rotation of the model, and display of preset perspectives.

[0076] Compared with the related technology, in the monitoring method of the converter valve 200 of the present application, a detailed three-dimensional model of the converter valve 200 is established, which can realize component-level fault location and component disassembly. And on the basis of the one-to-one correspondence between the model itself and the converter valve 200 entity, it further explores the application prospects of the three-dimensional model in the operation and maintenance process, and more application channels need to be expanded during the application process. At the same time, the multi-physical field simulation capabilities of the electric field, magnetic field, fluid field and temperature field of the sub-module 210 of the converter valve 200 are established. Through input parameters such as the losses of the sub-module 210 and the measured values of voltage and current, the electric field strength, magnetic field strength, and temperature distribution can be obtained, and the distribution of the multi-physical field can be drawn and displayed, providing simulation data at key positions and providing simulation data support for the state evaluation of the converter valve 200. Through the combination of these two models, it is helpful to discover weak links in operation and maintenance, and deduce the deficiencies in the design link, so as to make up for design defects and realize the closed-loop of manufacturing process and other problems.

[0077] S22: Establish the mapping relationship between the fault information database and the model;

[0078] In this step, the mapping relationship can include the ID mapping relationship between the fault information database and the three-dimensional model components, or the matching rule between the physical field simulation results and the telemetry data.

[0079] S23: Define the operation instructions of the model according to the fault information database;

[0080] Specifically, in this step, the operation instructions can be the instructions generated after triggering the trigger gesture or button for operating the model rotation, scaling or explosion.

[0081] S24: Set the demonstration rules of the fault message information and the fault diagnosis information according to the operation instructions.

[0082] In this step, specifically, it is necessary to define the trigger rules of the interaction button. For example, when clicking the "fault backtracking" button, the messages and waveforms of the corresponding time period are automatically loaded.

[0083] S30: Based on the fault information database, combine the model of the converter valve 200 and the waveform file of the converter valve fault to demonstrate the fault development process of the converter valve 200.

[0084] It should be noted that after the demonstration function is triggered, the background will send messages, devices, and telemetry measurement points to be displayed according to the requirements of the interface data stream based on the information collected from the fault information database. Then, the above information will be decomposed, the model will be disassembled and displayed, and the messages will be associated; at the same time, key telemetry signals will be displayed. According to requirements, waveform data for the fault occurrence time period can also be extracted from the waveform file and displayed along with the demonstration progress. In addition, during the IGBT bypass process time period, the electromagnetic field changes greatly, and the multi-physical field change process is of great significance for observing insulation, considering the electromagnetic design level of the faulty module design, and analyzing the impact of the fault process on the system. Therefore, the multi-physical field model is called to obtain data for multiple time slices of the multi-physical field in a short time within the imported time window and render it onto key devices such as IGBTs and capacitors to assist in the analysis.

[0085] On this basis, this step specifically includes:

[0086] S31: Present the fault information in the form of a list according to the operation instruction;

[0087] S32: Call the simulation cloud map of the physical field model during the fault period and the waveform curve of the fault interval according to the fault message information and fault diagnosis information;

[0088] S33: Synchronously display the fault messages, telemetry signals, telemetry measurement status during the fault period, the simulation cloud map of the physical field model, and the waveform curve of the fault interval on the structure model of the converter valve 200 in chronological order.

[0089] Among them, the demonstration process is based on the three-dimensional model of the sub-module 210 in the converter valve 200. After receiving the operation instruction, the equipment ledger, fault message duration, and the relationship between the message and key components of the fault will be extracted according to the instruction requirements. At the same time, the multi-physical field model and the fault recording file will be called to extract the simulation cloud map of the multi-physical field of the model and the waveform curve of the fault interval during the fault period. The three-dimensional model on the demonstration page will be separated based on the components included in the sub-module 210 to produce an exploded view effect, and the fault messages, telemetry signals, telemetry measurement status during the fault period, the simulation cloud map of the multi-physical field of the model, and the waveform curve of the fault interval will be synchronously displayed on each key device of the model in chronological order.

[0090] Through the above method, the association of key messages, key measurement point data, and primary equipment can be realized through three dimensions, thereby eliminating the difficulty of fault analysis caused by the division of physical space and intuitively restoring the fault process. The three-dimensional fault process model under transient faults restores the development process of the equipment fault state, organically combines the physical entity of the converter valve 200, the messages of the control and protection system, and the key devices of the fault cause, which has certain significance for fault backtracking and maintenance guidance.

[0091] Refer to Figure 2As shown, according to the second aspect of the present application, a converter valve monitoring system 100 is provided, which can be used to implement the aforementioned converter valve 200 monitoring method. The system includes a monitoring module 110, a control module 120, a collection module 130, a trigger module 140, and a demonstration module 150. Among them, the control module 120 is further configured to call a fault information database from the data collection module 130 according to an operation instruction, and combine it with the model of the converter valve 200 to demonstrate the fault development process of the converter valve 200.

[0092] Specifically, the monitoring module 110 is connected to the sub-module 210 of the converter valve 200, and the monitoring module 110 is configured to monitor the operating condition data of the converter valve 200 in real time. It should be noted that the operating condition data includes the number of sub-modules and the number of damaged modules.

[0093] The control module 120 is configured to construct a model of the converter valve 200, and generate fault message information and fault diagnosis information and construct a fault information database when the operating condition data changes. Among them, the fault message information, fault diagnosis information, and fault information database are as described in the aforementioned method, and will not be elaborated herein.

[0094] The collection module 130 is configured to store the model and the fault information database.

[0095] The trigger module 140 is electrically connected to the control module 120. The trigger module 140 is configured to generate an operation instruction in response to a user operation. Referring to the aforementioned method, the operation instruction can be used to indicate the state of the model during different faults.

[0096] The demonstration module 150 is electrically connected to the control module 120. The demonstration module 150 is configured to display the model of the converter valve 200.

[0097] In some embodiments of the present application, the monitoring module 110 receives tele-signaling, telemetry, and operating condition message information of the sub-module 210 of the valve towers of 12 converter valves 200 in a valve hall; the control module 120 receives the operating data of the converter valve 200, has a high-fidelity three-dimensional and multi-physical field model of the converter valve 200, and simultaneously conducts data interaction with the fault information database.

[0098] The high-fidelity three-dimensional model completes the modeling of the sub-module 210 of the converter valve 200 and its included components according to the actual size. The model is rendered with high fidelity according to the material of the equipment components, and the valve tower and component attribute information are configured according to the names, corresponding relationships, and IDs of these components. Referring to Figure 3 As shown, the modeling components include: IGBT and anti-parallel diodes (IGBT), bypass thyristors, DC capacitors, fast bypass switches, voltage-sharing resistors, energy-taking power supply boards, main control boards, drive boards, optical fibers, and main current-carrying circuits.

[0099] In these embodiments, the temperature of the sub-modules 210 of the 12 valve towers in the converter valve 200 and the condition messages of the valve hall are sent to the control module 120 through the monitoring module 110. The control module 120 automatically collects and processes the data in the fault information database by using the above-mentioned fault messages of the abnormal sub-modules 210 of the converter valve 200 and the fault analysis method; generates a list of abnormal faults of the sub-modules 210 of the converter valve 200, and supports the operation of the trigger and demonstration module 150.

[0100] In some embodiments, the trigger module 140 includes an interaction button. By triggering the interaction button, the fault information backtracking demonstration function is triggered to realize the explosion separation of the three-dimensional components of the sub-module 210, and the association between the message and the device model is carried out in the high-fidelity three-dimensional space. According to the fault development process shown in the message, analysis data such as charts and waveforms are synchronously displayed. It should be noted that the interaction button can be provided with buttons corresponding to both the "fault list" and the "fault case library" parts, and clicking the button can trigger the fault backtracking demonstration function. After the button is triggered, based on the information collected in the fault information database, according to the requirements of the interface data stream, the message, the device, and the telemetry measurement points to be displayed are sent to the demonstration module 150. After receiving the message, the demonstration module 150, on the one hand, decomposes the above information, disassembles and displays the model, and associates the message; on the other hand, it displays the key telemetry signals. In addition, an import button for the oscillogram file can be reserved. After the imported waveform file is imported, the waveform data in the fault occurrence time period will be extracted and displayed along with the demonstration progress.

[0101] In summary, although the present application has been disclosed above with the preferred embodiments, the above preferred embodiments are not intended to limit the present application. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A commutation valve monitoring method, characterized in that, Including: Obtain the converter valve fault message information and fault diagnosis information; Construct a fault information database according to the fault message information and the fault diagnosis information; Based on the fault information database, combine the model of the converter valve and the waveform file of the converter valve fault to demonstrate the fault development process of the converter valve.

2. The converter valve monitoring method according to claim 1, wherein: The obtaining the converter valve fault message information and fault diagnosis information includes: Real-time monitor the operating conditions of the sub-modules in the converter valve, and trigger the obtaining of the fault message information and the fault diagnosis information when the operating conditions of the sub-modules change.

3. The converter valve monitoring method according to claim 2, wherein: The real-time monitoring of the operating conditions of the sub-modules in the converter valve includes: Real-time monitor the number of bypassed sub-modules and the number of damaged sub-modules in the converter valve.

4. The converter valve monitoring method according to claim 1, wherein: Obtaining the converter valve fault message information includes: Obtain the fault cause message, access status message and communication exception message of the converter valve.

5. The converter valve monitoring method according to claim 1, wherein: Obtaining the fault diagnosis information of the converter valve includes: Obtain the message recognition and associated component matching association information, fault tele-signaling, telemetry and waveform recording data, and fault module ledger information of the converter valve.

6. The converter valve monitoring method according to claim 1, wherein: The constructing of the fault information database includes: Enter the converter valve equipment ledger information, including entering the coding information of the converter valve tower and the sub-modules to which the valve tower belongs; Enter the sub-module fault cause information, including entering the classification of the sub-module fault cause and the corresponding coding information; Enter the equipment fault monitoring information, including entering the tele-signaling quantity and telemetry parameter information corresponding to various faults; Enter the information on the correspondence between the equipment fault message and the component, including entering the relevant information on the association relationship between the full-cycle message from the start to the end of the fault and the components included in the sub-module.

7. The converter valve monitoring method according to claim 1, wherein: Before demonstrating the fault development process of the converter valve based on the fault information database, combining the model of the converter valve and the waveform file of the converter valve fault, the converter valve monitoring method further includes: Construct the model of the converter valve; Establish the mapping relationship between the fault information database and the model; Define the operation instructions of the model according to the fault information database; Set the demonstration rules of the fault message information and the fault diagnosis information according to the operation instructions.

8. The converter valve monitoring method according to claim 7, wherein: The constructing of the model of the converter valve includes: Construct a converter valve structure model, complete the modeling of the sub-modules belonging to the converter valve according to a preset ratio, construct the converter valve structure model according to the sub-module modeling, and configure the valve tower and component attribute information according to the correspondence between the component names in the sub-module, the abnormal components shown in the equipment fault message and the components in the sub-module model; and Build a physical field model, and build a physical field model of the electric field strength, magnetic field strength, and temperature distribution of the converter valve according to the losses of the sub-modules and the telemetered input parameters of voltage and current.

9. The converter valve monitoring method according to claim 8, characterized in that The modeling of the sub-modules to which the converter valve belongs according to a preset ratio includes: Model the insulated gate bipolar transistor, bypass thyristor, DC capacitor, fast bypass switch, voltage-sharing resistor, energy-taking power supply board, main control board, drive board, optical fiber, and main current-carrying loop at a ratio of 1:

1.

10. The converter valve monitoring method according to claim 8, characterized in that The demonstration of the fault development process of the converter valve based on the fault information library, in combination with the model of the converter valve and the waveform file of the converter valve fault includes: Present the fault information in a list form according to the operation instruction; According to the fault message information and fault diagnosis information, call the simulation cloud map of the physical field model during the fault period and the waveform curve of the fault interval; Synchronously display the fault messages, tele-signals, telemetering status during the fault, and the physical field simulation cloud map and the waveform curve of the fault interval on the model of the converter valve in chronological order.

11. A commutation valve monitoring system, characterized in that, It includes: A monitoring module, connected to the sub-modules of the converter valve, and the monitoring module is configured to monitor the working condition data of the converter valve in real time; A control module, configured to build a model of the converter valve, and generate fault message information and fault diagnosis information and build a fault information library when the working condition data changes; A collection module, configured to store the model and the fault information library; The control module is further configured to call the fault information library from the data collection module according to an operation instruction, and combine the model of the converter valve to demonstrate the fault development process of the converter valve.

12. The converter valve monitoring system according to claim 11, characterized in that The working condition data includes: the number of sub-modules and the number of damaged modules.

13. The converter valve monitoring system according to claim 11, characterized in that The converter valve monitoring system further includes: A trigger module, electrically connected to the control module, and the trigger module is configured to generate the operation instruction in response to a user operation; and A demonstration module, electrically connected to the control module, and the demonstration module is configured to display the model of the converter valve; Wherein, the operation instruction is used to indicate the state of the model during different faults.

Images