A Fault Diagnosis Method and Device for Nuclear Power Plant Equipment

Abstract

The present invention discloses a fault diagnosis method and device for nuclear power plant equipment, belonging to the field of nuclear power technology. The method includes: obtaining the fault type displayed in the operation data window corresponding to the faulty equipment according to the icon state corresponding to the faulty equipment displayed on the man-machine interface; diagnosing the normal state of the faulty equipment before the fault occurs according to the icon state and the fault type; and locating the faulty component of the faulty equipment according to the state change between the normal state of the faulty equipment before the fault occurs and the icon state. The method and device can solve the problems of long fault diagnosis time, low efficiency and easy occurrence of safety losses caused by untimely maintenance existing in the related art.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuclear power, and particularly relates to a method and device for fault diagnosis of nuclear power plant equipment. Background Art

[0002] At present, the industrial control system of nuclear power plants is integrated with the Internet of Things, enabling the acquisition of more abundant information. However, due to the wide variety of equipment included in the industrial control system and the numerous types of information contained in each equipment, various information has not been summarized, refined, and standardized. In addition, the icon information displayed on the human-machine interface of nuclear power plants is single, which is not conducive to operators identifying and diagnosing a large number of equipment information.

[0003] If a device failure occurs, it is necessary to query historical data at the engineer station to obtain the state of the faulty device before the failure, and further analyze the cause of the failure, resulting in a long fault diagnosis time, low efficiency, and prone to problems of safety losses caused by untimely maintenance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and device for fault diagnosis of nuclear power plant equipment in view of the above deficiencies existing in the prior art, so as to at least solve the problems of long fault diagnosis time, low efficiency, and prone to safety losses caused by untimely maintenance in the related art.

[0005] The present invention provides a method for fault diagnosis of nuclear power plant equipment, including: obtaining the fault type displayed in the operation data window corresponding to the faulty device according to the icon state corresponding to the faulty device displayed on the human-machine interface; diagnosing the normal state of the faulty device before the failure according to the icon state and the fault type; and locating the faulty component of the faulty device according to the state change between the normal state of the faulty device before the failure and the icon state.

[0006] Preferably, before obtaining the fault type displayed in the operation data window corresponding to the faulty device according to the icon state corresponding to the faulty device displayed on the human-machine interface, the method further includes: in response to a fault where both the open feedback and the close feedback are 0, setting the icon state corresponding to the faulty device to display the off / stop state, a red outer border, O alarm, and F alarm, where the red outer border is used to indicate that the device is in a fault state, the O alarm is used to indicate that the device has an operation fault, and the F alarm is used to indicate that the device has a fault; in response to a fault where both the open feedback and the close feedback are 1, setting the icon state corresponding to the faulty device to display the on / start state, a red outer border, O alarm, and F alarm.

[0007] Preferably, the fault type includes open delay fault, close delay fault, open deviation fault, and close deviation fault.

[0008] Preferably, the normal state of the faulty device before the fault occurs is diagnosed based on the icon state and the fault type, specifically including: in response to the icon state showing the off / stop state and the fault type being an on-delay fault or an off-deviation fault, diagnosing that the normal state of the faulty device before the fault occurs is that the on feedback is 0 and the off feedback is 1; in response to the icon state showing the off / stop state and the fault type being an off-delay fault or an on-deviation fault, diagnosing that the normal state of the faulty device before the fault occurs is that the on feedback is 1 and the off feedback is 0; in response to the icon state showing the on / start state and the fault type being an on-deviation fault, diagnosing that the normal state of the faulty device before the fault occurs is that the on feedback is 0 and the off feedback is 1; in response to the icon state showing the on / start state and the fault type being an off-deviation fault, diagnosing that the normal state of the faulty device before the fault occurs is that the on feedback is 1 and the off feedback is 0.

[0009] Preferably, the fault type further includes an execution fault. The diagnosing of the normal state of the faulty device before the fault occurs based on the icon state and the fault type further includes: in response to the fault type being an execution fault, terminating the process and locating the fault in the faulty device itself.

[0010] Preferably, before obtaining the fault type displayed in the corresponding operation data window of the faulty device according to the icon state of the faulty device displayed on the human-machine interface, the method further includes: designing the display scheme of the icons and the operation data window in the human-machine interface.

[0011] Preferably, the designing of the display scheme of the icons and the operation data window in the human-machine interface specifically includes: collecting the monitoring requirements for the target device in the nuclear power plant human-machine interface; obtaining the key information of the target device according to the collected monitoring requirements and the parameter information transmitted by the target device to the control system, where the key information includes on feedback, off feedback, execution fault, on fault, off fault, on deviation, off deviation, test, adjustment mode, on-off closed-loop mode, internal-external given mode; displaying the first part of the key information on the corresponding icon of the target device, and displaying the second part of the key information in the corresponding operation data window of the target device, where the first part of the content includes on feedback, off feedback, test, and the second part of the content includes execution fault, on fault, off fault, on deviation, off deviation, adjustment mode, on-off closed-loop mode, internal-external given mode.

[0012] Preferably, the designing of the display scheme of the icons and the operation data window in the human-machine interface further includes: determining all possible states of the target device according to the content displayed on the icon and the content displayed in the operation data window to obtain the comprehensive state display logic of the target device.

[0013] Preferably, displaying the first part of the key information on the corresponding icon of the target device specifically includes: The icon includes an icon body and an icon outer frame. Filling the icon body with a color consistent with the pipeline to display an open feedback, which is used to represent that the target device is in an open / start state; filling the icon body with white to display a closed feedback, which is used to represent that the target device is in a closed / stop state; setting the outer border of the icon to different colors to display different states of the target device, where the states include a fault state and a test state.

[0014] Preferably, displaying the second part of the key information in the corresponding operation data window of the target device specifically includes: Displaying the second part of the key information in text form in the corresponding operation data window of the target device, and the operation data window is displayed in a pop-up window form on the human-machine interface.

[0015] Correspondingly, the present invention also provides a fault diagnosis device for nuclear power plant equipment, including: An acquisition module, configured to acquire the fault type displayed in the corresponding operation data window of the faulty device according to the icon state of the faulty device displayed on the human-machine interface. A diagnosis module, connected to the acquisition module, configured to diagnose the normal state of the faulty device before the fault occurs according to the icon state and the fault type. A positioning module, connected to the acquisition module and the diagnosis module, configured to locate the faulty component of the faulty device according to the state change between the normal state of the faulty device before the fault occurs and the icon state.

[0016] The fault diagnosis method and device for nuclear power plant equipment of the present invention display the icon state (or icon information) of the faulty device in the human-machine interface, that is, prompt that the device has a fault, call the fault type displayed in the corresponding operation data window of the device according to the prompt information, diagnose the normal state of the device before the fault occurs based on the icon state and the fault type of the device, and locate the faulty component of the device by comparing the normal state and the icon state of the device. Since only the icon state currently displayed on the human-machine interface needs to be viewed and the fault type in the operation data window needs to be called to diagnose the normal state of the device before the fault occurs and locate the faulty component of the device according to the state change, there is no need to query the historical data of the device at the engineer station to obtain the state of the faulty device before the fault occurs. Therefore, the fault diagnosis duration can be shortened, the work efficiency can be improved, the overall response time cost and labor cost of the accident can be shortened, and the situation of safety losses caused by untimely maintenance can be avoided. Description of the Drawings

[0017] Figure 1 : It is a schematic flow chart of the fault diagnosis method for nuclear power plant equipment according to Embodiment 1 of the present invention;

[0018] Figure 2: Schematic diagram of graphic symbols for typical equipment in industrial control systems;

[0019] Figure 3 : Schematic diagram of the meaning and priority of mode indicators for pump and fan equipment;

[0020] Figure 4 : Schematic diagram of the meaning and priority of markings on equipment such as electric valves;

[0021] Figure 5 : Schematic diagram of the meaning and priority of superscripts on regulating equipment;

[0022] Figure 6 : Display description of the outer frame of the equipment;

[0023] Figure 7 : Schematic diagram of the operating data window for typical equipment;

[0024] Figure 8 : Comprehensive status display logic table for switch equipment;

[0025] Figure 9 : Comprehensive status display logic table for regulating equipment;

[0026] Figure 10 : Schematic diagram of the structure of the fault diagnosis device for nuclear power plant equipment in Embodiment 2 of the present invention. Detailed implementation manners

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Embodiment 1:

[0029] As Figure 1 shown, this embodiment provides a fault diagnosis method for nuclear power plant equipment, including:

[0030] Step 101, obtain the fault type displayed in the operating data window of the faulty equipment according to the graphic symbol state of the faulty equipment displayed on the man-machine interface.

[0031] In this embodiment, the man-machine interface can display information such as the graphic symbols corresponding to multiple pieces of equipment and the connection relationships between the graphic symbols. The graphic symbol state includes the status information of the equipment. As Figure 2 shown, the graphic symbols corresponding to some equipment such as valves, pumps, fans, heaters, circuit breakers, load switches, disconnectors, motors, mixers, and refrigerators are listed. To make the graphic symbols displayed on the nuclear power plant man-machine interface contain rich information, the optimization and improvement of the graphic symbol display scheme are as follows:

[0032] Each graphic symbol is mainly divided into two parts. The upper part is the superscript indication area of the graphic symbol, and the lower part is the status indication area of the graphic symbol.

[0033] (1) The superscript indication area includes three parts. Among them, the first part of the superscript is the F indication, whose meaning is the fault indication of the device, including all fault information of the device. The second part of the superscript is the O indication, whose meaning is the operation fault indication of the device, including the operation fault information of the device. The third part of the superscript is the mode indication of the device, whose meaning is the special mode indication of the device, including mode indications such as test, manual / automatic, protection, local, etc. of the device, and the priority of mode display is designed according to its importance. As Figure 3 shown in the meaning and priority of the mode indication of pump and fan equipment, as Figure 4 shown in the meaning and priority of the superscript of equipment such as electric valves. As Figure 5 shown, it is the meaning and priority of the superscript of regulating equipment.

[0034] Specifically, the dynamic display scheme of each part of the superscript indication area is as follows:

[0035] The F indication includes all fault information of the device. As long as there is fault information in the device, this indication will be triggered, that is, the F alarm. The font is white (RGB: 255, 255, 255), and the background color is red (RGB: 255, 0, 0). The specific status indications are as follows:

[0036] Normal state: The superscript is hidden.

[0037] Fault triggered: The superscript appears, F is displayed, and the background color flashes at a frequency of 2HZ.

[0038] Fault triggered and confirmed: Both F and the background color are displayed and do not flash.

[0039] Fault disappeared and not confirmed: F is displayed, and the background color flashes at a frequency of 0.5HZ.

[0040] Fault disappeared and confirmed (restored to normal state): The superscript is hidden.

[0041] The O indication includes the operation fault information of the device. Only when there is operation fault information in the device will this indication be triggered. When the O indication is triggered, the corresponding F indication should also be triggered at the same time, that is, the O alarm. The font is white (RGB: 255, 255, 255), and the background color is red (RGB: 255, 0, 0). The specific status indications are as follows:

[0042] Normal state: The superscript is hidden.

[0043] Fault triggered: The superscript appears, O is displayed, and the background color flashes at a frequency of 2HZ.

[0044] The fault is triggered and confirmed: the superscript is hidden.

[0045] Among them, the operating faults of the device are defined as follows: Operating faults include delay faults and deviation faults. Among them, delay faults include open faults and close faults. Open fault: When an open command is issued, the open feedback remains 0 within the specified time. Close fault: When a close command is issued, the close feedback remains 0 within the specified time. Deviation faults include open deviation and close deviation. Open deviation: There is no open command, but the open feedback changes. Close deviation: There is no close command, but the close feedback changes.

[0046] Mode indication, including test, manual / automatic, protection, local and other mode indications of the device. The font color is white (RGB: 255, 255, 255), and the background color is blue (RGB: 41, 115, 184).

[0047] (2) The status indication area includes four parts. Among them, the first part is the appearance of the graphic symbol: The appearance of the graphic symbol is designed based on the type of the corresponding device. To reflect its generality, the appearance of the graphic symbol is mainly defined according to the appearance usage conventions of each device in the industrial control system. As Figure 2 shown, it mainly includes devices such as valves, electric pumps, fans, heaters, circuit breakers, load switches, disconnectors, mixers, coolers, electromagnetic pumps, sodium pumps, etc. The drive mode of the device is reflected by the valve head and pump head of the graphic symbol. The lines such as the valve head, pump head, and switch are center lines (1.06pt). The second part is the controllable attribute of the graphic symbol: For dynamically controllable devices, the device edge line of their graphic symbols is a thick line (1.98pt); for dynamically uncontrollable devices, the device edge line of their graphic symbols is a thin line (0.27pt); for static devices, the device edge line of their graphic symbols is a thin line (0.27pt), and at the same time the device filling is a fixed light gray (RGB: 178, 178, 178). The third part is the outer border attribute of the graphic symbol: As Figure 6As shown, the outer border (1.12pt) of the graphic symbol represents different states of the device. When in the selected state, the outer border is pure blue (RGB: 0, 0, 255); when in the test state, the outer border is yellow (RGB: 255, 255, 0); when in the operable state with a tag, the outer border is orange (RGB: 255, 128, 0), and when in the inoperable state with a tag, the outer border is double-crossed and orange (RGB: 255, 128, 0); when in the fault state, the outer border is red (RGB: 255, 0, 0), and the red outer border will flash or display steadily simultaneously with the superscript F indication area. Since a device may simultaneously exhibit the states indicated by these several outer borders, it is necessary to establish a specific priority. For example, the outer border levels from high to low are: test > tagged > selected > fault. The fourth part is the dynamic filling attribute of the device graphic symbol: If the body of the graphic symbol is filled with the same color as the pipeline, it represents that the device is in the start / opened state; if the body of the graphic symbol is filled with white, it represents that the device is in the stop / closed state; for a device with an intermediate state, when half of the body of the graphic symbol is filled with the medium color and the other half is white, it represents the intermediate state of the device. When the device is in an invalid state, the body of the device graphic symbol is filled with magenta (RGB: 255, 0, 255).

[0048] Among them, the colors of the media are mainly divided into the following types:

[0049] (1) Media in the thermohydraulic part: Gas, oil, and concentrate are khaki (RGB 220, 170, 0); water and drain are light blue (RGB 110, 150, 180); steam is bright orange (RGB 255, 160, 145); cooling water is purple (RGB 120, 100, 170); waste and condensate are dark green (RGB 135, 150, 120); sodium is brown (RGB 102, 64, 0); argon is dark gray (RGB 97, 97, 97).

[0050] (2) Electrical part: 500kV / 220kV / 24kV / 220V alternating current is bright orange (RGB255, 160, 145); 10kV alternating current is light blue (RGB 110, 150, 180); 380V alternating current is khaki (RGB 220, 170, 0); 220V direct current is dark green (RGB 135, 150, 120); 48 - 110V direct current is purple (RGB 120, 100, 170).

[0051] This embodiment also optimizes and improves the display scheme of the operation data window, which is used to display the relevant operation data of the corresponding device, such as Figure 7As shown in the figure, a typical operation data window of a valve is listed. The information displayed in the operation data windows of other devices is basically the same as that of this window, except for the description of the text information, which will not be listed one by one. Since the content displayed on the man-machine interface is limited, the operator can call up the corresponding operation data window of the device by clicking the special button on the operation panel of the corresponding device on the man-machine interaction interface. Specifically, the operation data window is displayed in the form of a pop-up window on the man-machine interface of the main control room. It should be noted that compared with the icon status displayed on the man-machine interface of the main control room, the content displayed in the operation data window is more detailed device information of the corresponding device, and the device information is obtained by the automatic control program according to a specific algorithm.

[0052] As Figure 7 shown, an example of the operation data window of the device displays the following information:

[0053] (1) General status: Lists the general information of the device class object, including remote, manual control, execution failure, status inconsistency, invalid.

[0054] (2) Opening information: Includes open feedback, opening, protection open, permission to open, automatic open, open failure, open deviation.

[0055] (3) Closing information: Includes close feedback, closing, protection close, permission to close, automatic close, close failure, close deviation.

[0056] For the above information, the information included varies depending on the object type, and the displayed text information is also different. For example, for a pump, the text corresponding to the open feedback is displayed as start feedback.

[0057] If it is a regulating device, the operation data window also includes the following display information:

[0058] (4) Set value: Displays the set value adjustment information, including set value adjustment, internal given, external given, set value (the actually output set value), measured value (the measured value feedback from the site), set set value (the set value input by the operator).

[0059] (5) Output value: Displays the output value adjustment information, including output value adjustment: output value adjustment, output value (the actually output valve position value), valve position feedback value, set output value (the output value input by the operator).

[0060] Optionally, the open feedback and close feedback are only displayed on the icon, or both the open feedback and close feedback are displayed on the icon and in the operation data window. Among them, displaying the open and close feedback on the icon and in the operation data window is beneficial to first obtain the specific form of the fault status through the icon, and then verify and confirm the fault status through the content displayed in the operation data window, further improving the accuracy of fault diagnosis.

[0061] Optionally, to facilitate obtaining the operation fault information of the device from the icon state of the man-machine interface, in this embodiment, the icon state display of the faulty device is reasonably set so that the operator can quickly call up the operation data window of the device according to the icon state of the faulty device in the man-machine interface, and quickly diagnose the faulty component of the faulty device. Specifically, before step 101: obtaining the fault type displayed in the operation data window corresponding to the faulty device according to the icon state of the faulty device displayed in the man-machine interface, the method further includes: in response to a fault where both the open feedback and the close feedback are 0, setting the icon state corresponding to the faulty device to display the off / stop state, a red outer border, O alarm, and F alarm, where the red outer border is used to indicate that the device is in a faulty state, the O alarm is used to indicate that the device has an operation fault, and the F alarm is used to indicate that the device has a fault; in response to a fault where both the open feedback and the close feedback are 1, setting the icon state corresponding to the faulty device to display the on / start state, a red outer border, O alarm, and F alarm.

[0062] In this embodiment, when the device has an operation fault, according to the optimized design of the icon display scheme described above, both the O indication and the F indication will give an alarm. When the device has an execution fault, the O indication will not give an alarm, while the F indication will give an alarm. When the device has an operation fault, the open feedback and the close feedback are both 0 or both 1 at the same time.

[0063] Step 102, diagnosing the normal state of the faulty device before the fault occurred according to the icon state and the fault type.

[0064] In this embodiment, the fault type includes open delay fault, close delay fault, open deviation fault, and close deviation fault. Specifically, diagnosing the normal state of the faulty device before the fault occurred according to the icon state and the fault type includes:

[0065] In response to the icon state displaying the off / stop state (i.e., both the open feedback and the close feedback are 0), and the fault type being an open delay fault or a close deviation fault, diagnosing that the normal state of the faulty device before the fault occurred is that the open feedback is 0 and the close feedback is 1;

[0066] In response to the icon state displaying the off / stop state (i.e., both the open feedback and the close feedback are 0), and the fault type being a close delay fault or an open deviation fault, diagnosing that the normal state of the faulty device before the fault occurred is that the open feedback is 1 and the close feedback is 0;

[0067] In response to the icon state displaying the on / start state (i.e., both the open feedback and the close feedback are 1), and the fault type being an open deviation fault, diagnosing that the normal state of the faulty device before the fault occurred is that the open feedback is 0 and the close feedback is 1;

[0068] In response to the icon status indicating an on / start status (i.e., both the on feedback and the off feedback are 1), and the fault type being an off deviation fault, it is diagnosed that the normal state of the faulty device before the fault occurred was that the on feedback was 1 and the off feedback was 0.

[0069] Optionally, the fault type further includes an execution fault. Step 102: The diagnosing of the normal state of the faulty device before the fault occurred based on the icon status and the fault type further includes: In response to the fault type being an execution fault, terminating the process and locating the fault in the faulty device itself.

[0070] In this embodiment, when the fault type is an execution fault, the icon status is used to display an F alarm, O does not alarm, and the execution fault is displayed as 1 in the operation data window. In this case, the process terminates, and there is no need to obtain the normal state of the faulty device before the fault occurred. Instead, the actuator fault in the faulty device itself is located. For example, when the valve is performing an open or close action and the valve stem breaks, it is an actuator fault.

[0071] Step 103: Locate the faulty component of the faulty device based on the state change between the normal state of the faulty device before the fault occurred and the icon status.

[0072] In this embodiment, when the corresponding icon status of the device after the fault shows a state where both the on feedback and the off feedback are 0, and the fault type displayed in the corresponding operation data window of the device is an on delay fault, it can be diagnosed that the normal state of the device before the fault was: the on feedback was 0 and the off feedback was 1; at this time, when the maintenance personnel are locating the fault, it can be determined that the off state of the device is normal, and they should mainly check whether the corresponding components or parts that execute the open command in the device's actuator are damaged or have imperfect functions. Another example is that when the icon status of the device after the fault shows a state where both the on feedback and the off feedback are 1, and the fault type displayed in the corresponding operation data window of the device is an off deviation fault, it can be diagnosed that the normal state of the device before the fault was: the on feedback was 1 and the off feedback was 0; at this time, when the maintenance personnel are locating the fault again, it can be determined that the on state of the device is normal, and they should mainly check whether the relevant components and parts in the off state of the device are damaged or imperfect. By diagnosing the state before the fault through the icon status of the faulty device and the fault type displayed in the operation data window, and thus locating the corresponding faulty components of the faulty device according to the state change, the maintenance time can be shortened and the maintenance efficiency can be improved.

[0073] Optionally, before step 101: Obtain the fault type displayed in the corresponding operation data window of the faulty device according to the icon status of the faulty device displayed on the human - machine interface, the method further includes: Designing the display scheme of the icons and the operation data window in the human - machine interface.

[0074] In this embodiment, the optimization improvement of the icon display scheme and the display scheme of the operation data window as described above are adopted, which will not be elaborated here.

[0075] Specifically, the display scheme of the icons and the operation data window in the designed human-machine interface includes: collecting the monitoring requirements for the target device in the human-machine interface of the nuclear power plant; obtaining the key information of the target device according to the collected monitoring requirements and the parameter information transmitted by the target device to the control system, where the key information includes open feedback, close feedback, execution failure, open failure, close failure, open deviation, close deviation, test, adjustment mode, open / closed loop mode, internal / external given mode; displaying the first part of the content of the key information on the corresponding icon of the target device, and displaying the second part of the content of the key information in the corresponding operation data window of the target device, where the first part of the content includes open feedback, close feedback, test, and the second part of the content includes execution failure, open failure, close failure, open deviation, close deviation, adjustment mode, open / closed loop mode, internal / external given mode.

[0076] Optionally, the display scheme of the icons and the operation data window in the designed human-machine interface further includes: determining all possible states of the target device according to the content displayed on the icon and the content displayed in the operation data window, so as to obtain the comprehensive state display logic of the target device.

[0077] In this embodiment, the operator can more intuitively and efficiently judge the state of the target device according to the comprehensive state display logic, which is beneficial to improving the monitoring efficiency and the correctness of monitoring operations. This embodiment is described by taking the comprehensive state display logic table as an example. For example, Figure 8 The following shows the comprehensive state display logic table for switch-type devices. Among them, a state display logic table mainly based on the open state is provided, and the logic table related to the closed state can be deduced by analogy; X in the table can represent either 0 or 1. For example, Figure 8 For the device state "fully open automatically" in, it is obtained by synthesizing the signal bit states of the device. The specific process is as follows: Feedback information: fully open state, the "open feedback" bit is 1, and the "close feedback" bit is 0; at the same time, since the device is already in the open state, both the "open command" and the "close command" are 0; Mode information: the mode indication is "automatic state", and there are no other higher-priority modes such as "test", "local", "protection", etc. The "test" bit in the table is 0, the "remote" bit is 1, and both the "protection open" and "protection close" bits are 0; Fault information: there is no fault information, and the "execution failure", "open failure", "close failure", "open deviation", "close deviation", and "fault" bits in the table are all 0; Tagging information: At this time, the device has not performed any tagging operations, and both the "hang test tag" and "hang operation prohibition tag" bits are 0. Again, for example, Figure 8The status of "Automatic full open O / F alarm" is also obtained by synthesizing the signal bit status of the device. The specific process is as follows: Feedback information: In the full open state, the "open feedback" bit is 1 and the "close feedback" bit is 0; at the same time, since the device is already in the open state, both the "open command" and "close command" are 0; Mode information: The mode indicator is "automatic state", and there are no other higher-priority modes such as "test", "local", "protection", etc. The "test" bit in the table is 0, the "remote" bit is 1, and the "protection open" and "protection close" bits are both 0; Fault information: The "close fault" bit in the table is 1 and the "fault" bit is 1; or the "close deviation" is 1 and the "fault" is 1; the "open fault" is 0 and the "open deviation" is 0; there is O / F alarm information. Tagging information: At this time, the device is not performing any tagging operations, and both the "hang test tag" and "hang operation prohibited tag" bits are 0. As Figure 9 shown in the comprehensive status display logic table of regulating devices, which provides a status display logic table mainly based on the open state. The logic table related to the closed state can be deduced by analogy; X in the table can be either 0 or 1. For example, Figure 9 the status of "fully open in open-loop mode" of the regulating device in it is obtained by synthesizing the signal bit status of the device. The specific process is as follows: Feedback information: In the full open state, the "open feedback" bit is 1 and the "close feedback" bit is 0; Mode information: The mode indicator is "open-loop mode", and there are no other higher-priority modes such as "local", "protection", etc. The "remote" bit in the table is 1, and the "protection open" and "protection close" bits are both 0; the "open / closed loop mode" bit is 1; Fault information: There is no fault information, and the "fault" bit in the table is 0; Tagging information: At this time, the device is not performing any tagging operations, and both the "hang test tag" and "hang operation prohibited tag" bits are 0. Another example is, as Figure 9 the status of "fully open with fault in closed-loop internal given mode" in it is also obtained by synthesizing the signal bit status of the device. The specific process is: Feedback information: In the full open state, the "open feedback" bit is 1 and the "close feedback" bit is 0; Mode information: The mode indicator is "closed-loop internal given mode", and there are no other higher-priority modes such as "local", "protection", etc. The "remote" bit in the table is 1, and the "protection open" and "protection close" bits are both 0; the "open / closed loop mode" bit is 0; the "internal / external given mode" is 0; Fault information: The "fault" bit in the table is 1, and there is fault information. Tagging information: At this time, the device is not performing any tagging operations, and both the "hang test tag" and "hang operation prohibited tag" bits are 0. In summary, the operator can quickly obtain the current status of the device and quickly perform the next monitoring operation according to the current status and the operation regulations.

[0078] Optionally, display the first part of the key information on the corresponding icon of the target device, specifically including: The icon includes an icon body and an icon outer frame. Fill the icon body with a color consistent with the pipeline to display the on feedback, which is used to characterize that the target device is in the on / start state; fill the icon body with white to display the off feedback, which is used to characterize that the target device is in the off / stop state; set the outer border of the icon to different colors to display different states of the target device, where the states include a fault state and a test state.

[0079] Optionally, display the second part of the key information in the corresponding operation data window of the target device, specifically including: Display the second part of the key information in text form in the corresponding operation data window of the target device, and the operation data window is displayed in a pop-up window form on the human-machine interface.

[0080] The fault diagnosis method of the nuclear power plant equipment in this embodiment, by displaying the corresponding icon state of the faulty equipment in the human-machine interface, that is, prompting that the equipment has a fault, calling the fault type displayed in the corresponding operation data window of the equipment according to the prompt information, diagnosing the normal state of the equipment before the fault based on the icon state and the fault type of the equipment, and positioning the faulty component of the equipment by comparing the change between the normal state and the icon state. Since only by viewing the icon state currently displayed on the human-machine interface and calling the fault type in the operation data window, the normal state of the equipment before the fault can be diagnosed and the faulty component of the equipment can be positioned, without querying the historical data of the equipment at the engineer station to obtain the state of the faulty equipment before the fault, the fault diagnosis duration can be shortened, the work efficiency can be improved, the overall response time cost and labor cost of the accident can be shortened, and the situation of safety losses caused by untimely maintenance can be avoided. Further, in order to make the icons displayed on the nuclear power plant human-machine interface contain rich information, the icon display scheme is optimized and improved. In addition, the operator can more intuitively and efficiently judge the state of the target device according to the comprehensive state display logic, which is beneficial to improving the monitoring efficiency and monitoring accuracy.

[0081] Embodiment 2:

[0082] As Figure 10 shown, this embodiment provides a fault diagnosis device for nuclear power plant equipment, including:

[0083] An acquisition module 11, configured to acquire the fault type displayed in the corresponding operation data window of the faulty equipment according to the icon state of the faulty equipment displayed on the human-machine interface.

[0084] A diagnosis module 12, connected to the acquisition module 11, is configured to diagnose the normal state of the faulty equipment before the fault according to the icon state and the fault type.

[0085] The positioning module 13, connected to the acquisition module 11 and the diagnosis module 12, is configured to locate the faulty component of the faulty device according to the state change between the normal state of the faulty device before the fault occurs and the icon state.

[0086] Optionally, the device further includes a setting module. The setting module is configured to, in response to a fault where both the on feedback and the off feedback are 0, set the corresponding icon state of the faulty device to display the off / stop state, a red outer border, an O alarm, and an F alarm, where the red outer border is used to indicate that the device is in a faulty state, the O alarm is used to indicate that the device has an operation fault, the F alarm is used to indicate that the device has a fault, and, in response to a fault where both the on feedback and the off feedback are 1, set the corresponding icon state of the faulty device to display the on / start state, a red outer border, an O alarm, and an F alarm.

[0087] Optionally, the fault types include on-delay faults, off-delay faults, on-deviation faults, and off-deviation faults.

[0088] Optionally, the diagnosis module includes a first diagnosis unit, a second diagnosis unit, a third diagnosis unit, and a fourth diagnosis unit.

[0089] The first diagnosis unit is configured to, in response to the icon state displaying the off / stop state and the fault type being an on-delay fault or an off-deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the on feedback is 0 and the off feedback is 1.

[0090] The second diagnosis unit is configured to, in response to the icon state displaying the off / stop state and the fault type being an off-delay fault or an on-deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the on feedback is 1 and the off feedback is 0.

[0091] The third diagnosis unit is configured to, in response to the icon state displaying the on / start state and the fault type being an on-deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the on feedback is 0 and the off feedback is 1.

[0092] The fourth diagnosis unit is configured to, in response to the icon state displaying the on / start state and the fault type being an off-deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the on feedback is 1 and the off feedback is 0.

[0093] Optionally, the fault types further include execution faults.

[0094] Optionally, the diagnosis module further includes a fifth diagnosis unit. The fifth diagnosis unit is configured to, in response to the fault type being an execution fault, terminate the process and locate that the faulty device itself has an execution fault.

[0095] Optionally, the device further includes a design module. The design module is configured to design the icons in the human-machine interface and the display scheme of the operation data window.

[0096] Optionally, the design module includes a collection unit, an acquisition unit, and a display unit.

[0097] The collection unit is configured to collect the monitoring requirements for the target device in the human-machine interface of the nuclear power plant.

[0098] The acquisition unit is connected to the collection unit and is configured to obtain the key information of the target device according to the collected monitoring requirements and the parameter information transmitted by the target device to the control system. The key information includes open feedback, close feedback, execution failure, open failure, close failure, open deviation, close deviation, test, adjustment mode, open / closed loop mode, internal / external given mode.

[0099] The display unit is connected to the acquisition unit and is configured to display the first part of the key information on the corresponding icon of the target device and display the second part of the key information in the corresponding operation data window of the target device. The first part of the content includes open feedback, close feedback, and test. The second part of the content includes execution failure, open failure, close failure, open deviation, close deviation, adjustment mode, open / closed loop mode, internal / external given mode.

[0100] Optionally, the design module further includes a determination unit. The determination unit is connected to the display unit and is configured to determine all possible states of the target device according to the content displayed on the icon and the content displayed in the operation data window, so as to obtain the comprehensive state display logic of the target device.

[0101] Optionally, the icon includes an icon body and an icon outer frame.

[0102] The display unit includes a first display component and a second display component.

[0103] The first display component is configured to fill the icon body with a color consistent with the pipeline to display the open feedback, which is used to represent that the target device is in the open / start state; fill the icon body with white to display the close feedback, which is used to represent that the target device is in the close / stop state; set the outer border of the icon to different colors to display different states of the target device, where the states include the fault state and the test state.

[0104] The second display component is configured to display the second part of the key information in text form in the corresponding operation data window of the target device, and the operation data window is displayed in a pop-up window form on the human-machine interface.

[0105] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A fault diagnosis method for nuclear power plant equipment, characterized in that including: Obtain the fault type displayed in the operation data window of the faulty device according to the icon status of the faulty device corresponding to the human-machine interface. Diagnose the normal state of the faulty device before the fault occurs based on the icon status and the fault type. Locate the faulty component of the faulty device according to the state change between the normal state of the faulty device before the fault occurs and the icon status. Wherein, before obtaining the fault type displayed in the operation data window of the faulty device according to the icon status of the faulty device corresponding to the human-machine interface, it further includes: In response to a fault where both the open feedback and the close feedback are 0, set the icon status of the faulty device to display the off / stop state, a red outer border, O alarm, and F alarm, where the red outer border is used to indicate that the device is in a faulty state, the O alarm is used to indicate that the device has an operation fault, and the F alarm is used to indicate that the device has a fault. In response to a fault where both the open feedback and the close feedback are 1, set the icon status of the faulty device to display the on / start state, a red outer border, O alarm, and F alarm.

2. The fault diagnosis method for nuclear power plant equipment according to claim 1, wherein The fault type includes open delay fault, close delay fault, open deviation fault, and close deviation fault. Diagnosing the normal state of the faulty device before the fault occurs based on the icon status and the fault type specifically includes: In response to the icon status showing the off / stop state and the fault type being an open delay fault or a close deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the open feedback is 0 and the close feedback is 1. In response to the icon status showing the off / stop state and the fault type being a close delay fault or an open deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the open feedback is 1 and the close feedback is 0. In response to the icon status showing the on / start state and the fault type being an open deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the open feedback is 0 and the close feedback is 1. In response to the icon status showing the on / start state and the fault type being a close deviation fault, diagnose that the normal state of the faulty device before the fault occurs is that the open feedback is 1 and the close feedback is 0.

3. The fault diagnosis method for nuclear power plant equipment according to claim 2, wherein The fault type further includes an execution fault. Diagnosing the normal state of the faulty device before the fault occurs based on the icon status and the fault type further includes: In response to the fault type being an execution fault, terminate the process and locate the fault in the faulty device itself.

4. The fault diagnosis method for nuclear power plant equipment according to claim 1, wherein Before obtaining the fault type displayed in the operation data window of the faulty device according to the icon status of the faulty device corresponding to the human-machine interface, it further includes: Design the display scheme of the icons and the operation data window in the human-machine interface.

5. The fault diagnosis method for nuclear power plant equipment according to claim 4, characterized in that The design of the display scheme of the icons and the operation data window in the human-machine interface specifically includes: Collect the monitoring requirements for the target device in the human-machine interface of the nuclear power plant. Obtain the key information of the target device according to the collected monitoring requirements and the parameter information transmitted by the target device to the control system. The key information includes open feedback, close feedback, execution fault, open fault, close fault, open deviation, close deviation, test, adjustment mode, open / closed loop mode, internal / external given mode; Display the first part of the key information on the corresponding icon of the target device, and display the second part of the key information in the corresponding operation data window of the target device. The first part of the content includes open feedback, close feedback, test, and the second part of the content includes execution fault, open fault, close fault, open deviation, close deviation, adjustment mode, open / closed loop mode, internal / external given mode.

6. The fault diagnosis method for nuclear power plant equipment according to claim 5, characterized in that, The display scheme of the icons and operation data windows in the designed human-machine interface also includes: Determine all possible states of the target device according to the content displayed by the icon and the content displayed by the operation data window, so as to obtain the comprehensive state display logic of the target device.

7. The fault diagnosis method for nuclear power plant equipment according to claim 5, characterized in that, The specific method of displaying the first part of the key information on the corresponding icon of the target device includes: The icon includes an icon body and an icon outer frame. Fill the icon body with the same color as the pipeline to display the open feedback, which is used to represent that the target device is in the open / start state; Fill the icon body with white to display the close feedback, which is used to represent that the target device is in the close / stop state; Set the outer border of the icon to different colors to display different states of the target device, where the states include fault state and test state.

8. The fault diagnosis method for nuclear power plant equipment according to claim 5, characterized in that The specific method of displaying the second part of the key information in the corresponding operation data window of the target device includes: Display the second part of the key information in text form in the corresponding operation data window of the target device, and the operation data window is displayed in a pop-up window form on the human-machine interface.

9. A fault diagnosis device for nuclear power plant equipment, characterized in that, It includes: An acquisition module, which is used to obtain the fault type displayed in the corresponding operation data window of the faulty device according to the icon state of the faulty device displayed on the human-machine interface. A diagnosis module, connected to the acquisition module, which is used to diagnose the normal state of the faulty device before the fault occurs according to the icon state and the fault type. A positioning module, connected to the acquisition module and the diagnosis module, which is used to locate the faulty component of the faulty device according to the state change between the normal state of the faulty device before the fault occurs and the icon state. A setting module, connected to the acquisition module, which is used to respond to the fault where both the open feedback and the close feedback are 0, and set the corresponding icon state of the faulty device to display the close / stop state, a red outer border, O alarm and F alarm. The red outer border is used to prompt that the device is in a fault state, the O alarm is used to prompt that the device has an operation fault, and the F alarm is used to prompt that the device has a fault. Also, it is used to respond to the fault where both the open feedback and the close feedback are 1, and set the corresponding icon state of the faulty device to display the open / start state, a red outer border, O alarm and F alarm.

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