Detection method and device for liquid level control loop of nuclear power station and electronic equipment

Abstract

The invention is suitable for the technical field of nuclear power station management, and provides a nuclear power station liquid level control loop detection method and device, electronic equipment and a computer readable storage medium. Recording an initial state corresponding to the liquid level control loop to be detected; performing a disturbance test on the to-be-detected liquid level control loop according to the loop detection instruction, and recording a real-time state corresponding to the to-be-detected liquid level control loop in the disturbance test process; wherein the disturbance test enables the liquid level corresponding to the liquid level control loop to be detected to generate disturbance by adjusting the valve opening degree of a control valve in the liquid level control loop to be detected; according to the initial state and the real-time state, loop detection is conducted on the liquid level control loop to be detected, and a loop detection result is obtained. The detection accuracy of the liquid level control loop can be improved.

Description

Technical Field

[0001] The present application belongs to the field of nuclear power plant management technology, and in particular, relates to a detection method, device, electronic equipment and computer-readable storage medium for a liquid level control loop of a nuclear power plant. Background Art

[0002] During the operation of a nuclear power plant, different liquid level control loops are used to ensure the normal operation of the nuclear power unit. For example, the liquid level control loops corresponding to the high pressure feedwater heater (AHP) system and the steam separator reheater (GSS) system may include heaters and control valves, which adjust the liquid level of the entire loop so that the liquid level control loop can be maintained at a preset liquid level.

[0003] At present, the maintenance and inspection of the liquid level control circuit is mainly carried out after each overhaul, through manual on-site inspection to see if the heater and control valve in the liquid level control circuit are damaged, and timely replacement is carried out when damage is found. However, this manual inspection relies on manual experience and only inspects and maintains local equipment, which leads to low accuracy of liquid level control circuit inspection. Summary of the invention

[0004] The embodiments of the present application provide a method, system, device and electronic equipment for detecting a liquid level control loop of a nuclear power plant, which can improve the accuracy of detecting a liquid level control loop of a nuclear power plant.

[0005] In a first aspect, an embodiment of the present application provides a method for detecting a liquid level control loop of a nuclear power plant, comprising:

[0006] When the liquid level control loop to be detected is running and a loop detection instruction is received, recording the initial state corresponding to the liquid level control loop to be detected;

[0007] A disturbance test is performed on the liquid level control circuit to be detected according to the circuit detection instruction, and during the disturbance test, the real-time state corresponding to the liquid level control circuit to be detected is recorded; wherein the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control circuit to be detected by adjusting the valve opening of the control valve in the liquid level control circuit to be detected;

[0008] A loop detection is performed on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

[0009] In a second aspect, an embodiment of the present application provides a detection device for a liquid level control circuit of a nuclear power plant, comprising:

[0010] A state recording module, used for recording the initial state corresponding to the liquid level control loop to be detected when the liquid level control loop to be detected is running and a loop detection instruction is received;

[0011] A disturbance test module, used for performing a disturbance test on the liquid level control loop to be detected according to the loop detection instruction, and recording the real-time state corresponding to the liquid level control loop to be detected during the disturbance test; wherein the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control loop to be detected by adjusting the valve opening of the control valve in the liquid level control loop to be detected;

[0012] The loop detection module is used to perform loop detection on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for detecting a liquid level control circuit of a nuclear power plant as described in the first aspect when executing the computer program.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the detection method of the liquid level control loop of a nuclear power plant described in the first aspect are implemented.

[0015] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes the method for detecting a liquid level control loop of a nuclear power plant as described in any one of the first aspects above.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0017] In the embodiment of the present application, the accuracy of the liquid level control loop detection can be improved by performing loop detection by recording the initial state and real-time state of the control loop to be detected. Specifically, when the liquid level control loop to be detected is running and a loop detection instruction is received, the initial state corresponding to the liquid level control loop to be detected is recorded, and then a disturbance test is performed on the liquid level control loop to be detected according to the loop detection instruction (i.e., the liquid level disturbance is created by adjusting the valve opening of the liquid level control loop to be detected), and the real-time state corresponding to the liquid level control loop to be detected during the above-mentioned disturbance test is recorded, which means that the above-mentioned detection method is to detect the overall operating state of the liquid level control loop to be detected according to the state (i.e., the initial state and the real-time state) before and after the disturbance test of the liquid level control loop to be detected when the liquid level control loop to be detected is running, so the limitations of manual inspection of local equipment can be avoided, thereby improving the accuracy of the liquid level control loop detection. In addition, since the above-mentioned detection method is performed when the liquid level control loop to be detected is running, it can be applied before the overhaul of the nuclear power plant, so that the liquid level control loop to be detected can be detected in advance, further improving the accuracy of the liquid level control loop detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic diagram of a liquid level control circuit corresponding to a high-pressure feedwater heater system provided in an embodiment of the present application;

[0020] Figure 2 It is a flow chart of a method for detecting a liquid level control loop of a nuclear power plant provided in one embodiment of the present application;

[0021] Figure 3 It is a structural schematic diagram of a detection device for a liquid level control circuit of a nuclear power plant provided in an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0024] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0025] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0027] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0028] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0029] During the operation of a nuclear power plant, the liquid level control loop may include equipment such as heaters, control valves, and liquid level transmitters. The liquid level of the entire loop is adjusted by the heater and control valve, and the corresponding liquid level is measured by the liquid level transmitter, so that the liquid level control loop can be maintained at a preset liquid level, thereby ensuring the normal operation of the nuclear power unit. For example, the liquid level control loop corresponding to the high-pressure feedwater heater (AHP) and the steam-water separator reheater (GSS) drain tank is designed with a normal liquid level control state and a high liquid level control state. The liquid level of the entire loop is maintained at a normal liquid level or a high liquid level by adjusting the heater and control valve. Figure 1 As shown in the figure, taking the liquid level control loop corresponding to the high-pressure feedwater heater AHP602RE as an example, the loop corresponds to two liquid level transmitters (AHP003MN and AHP004MN) and two pneumatic control valves (AHP217VL and AHP218VL). Under normal circumstances, the liquid level transmitter AHP003MN measures the liquid level of AHP602RE, and the system controls the drainage of the high-pressure feedwater heater AHP602RE to the deaerator system (ADG) by adjusting the valve opening of AHP217VL to maintain the liquid level of the drain tank in the liquid level control loop at a normal liquid level of 0.77m; in an emergency, the liquid level transmitter AHP004MN measures the liquid level of AHP602RE, and the system controls the drainage of the high-pressure feedwater heater AHP602RE to the condensate system (CEX) by adjusting the valve opening of AHP218VL to maintain the liquid level of the drain tank in the liquid level control loop at a high liquid level of 0.92m.

[0030] At present, the maintenance and inspection of the liquid level control loop is mainly carried out by manually performing on-site inspections of the liquid level transmitter and control valve in the liquid level control loop after each overhaul (such as preventive inspections, equipment transmission inspections, etc.), and performing repairs when abnormalities are found manually. However, this method relies on manual experience and only inspects and maintains local equipment. It cannot effectively detect the accuracy and stability of the overall liquid level control loop. In addition, the above method is a post-inspection method and cannot detect abnormalities in the liquid level control loop in advance.

[0031] Therefore, the accuracy of the above method is low when performing liquid level control loop detection.

[0032] In order to improve the accuracy of liquid level control loop detection, the present application provides a method for detecting a liquid level control loop of a nuclear power plant based on a disturbance test.

[0033] Figure 2 A flow chart of a method for detecting a liquid level control loop of a nuclear power plant provided by an embodiment of the present application is shown, and is described in detail as follows:

[0034] S21. When the liquid level control circuit to be detected is running and a circuit detection instruction is received, an initial state corresponding to the liquid level control circuit to be detected is recorded.

[0035] Among them, the above-mentioned liquid level control loop to be detected can be a loop in a nuclear power plant that controls the liquid level through one or more control valves, for example, the liquid level control loop corresponding to the high-pressure feedwater heater (AHP) and the steam-water separator reheater (GSS) drain tank system, etc. The above-mentioned loop detection instruction is used to instruct the liquid level control loop to be detected to perform loop detection through a disturbance test. The above-mentioned initial state refers to the loop state of the liquid level control loop to be detected before the disturbance test is performed on the liquid level control loop to be detected, and may include at least one of the following: the liquid level corresponding to the liquid level control loop to be detected, the control state of the control valve in the liquid level control loop to be detected (for example, automatic control state, manual control state, etc.), the valve opening of the control valve in the liquid level control loop to be detected, and the valve opening requirement of the control valve in the liquid level control loop to be detected (that is, the valve opening required for the control valve to maintain a preset liquid level threshold, for example, Figure 1 When AHP217VL maintains a normal liquid level of 0.77m, the corresponding valve opening requirement is 81.23%), etc. In addition, when the liquid level control loop to be detected includes equipment such as a heater, the above initial state may also include electrical power, thermal power, etc., which are not limited here.

[0036] For example, suppose the liquid level control loop to be detected is Figure 1 For the liquid level control loop corresponding to AHP602RE, when the liquid level control loop corresponding to AHP602RE is running and receives the loop detection instruction, the liquid level corresponding to the liquid level control loop to be detected determined by the liquid level transmitter (AHP003MN and AHP004MN) can be recorded, as well as the valve opening requirement corresponding to the pneumatic control valve (AHP217VL and AHP218VL).

[0037] In an embodiment of the present application, when the liquid level control circuit to be detected is running and receives a circuit detection instruction, by recording the initial state corresponding to the liquid level control circuit to be detected, the circuit state before the disturbance test of the liquid level control circuit to be detected can be accurately recorded.

[0038] S22. Perform a disturbance test on the liquid level control circuit to be detected according to the loop detection instruction, and record the real-time status of the liquid level control circuit to be detected during the disturbance test; wherein, the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control circuit to be detected by adjusting the valve opening of the control valve in the liquid level control circuit to be detected.

[0039] Specifically, after recording the initial state corresponding to the liquid level control loop to be detected, the liquid level control loop to be detected can be switched to a preset disturbance test sequence according to the above-mentioned loop detection instruction, and the valve opening of one of the control valves in the liquid level control loop to be detected is adjusted through the above-mentioned disturbance test sequence, while maintaining the normal operation of other control valves, so that the liquid level corresponding to the liquid level control loop to be detected is disturbed, and then the real-time state of the above-mentioned liquid level control loop to be detected at this time is recorded, wherein the above-mentioned real-time state refers to the loop state when the liquid level control loop to be detected is subjected to a disturbance test, which corresponds to the above-mentioned initial state and will not be repeated here.

[0040] For example, suppose the liquid level control loop to be detected is Figure 1 For the liquid level control loop corresponding to AHP602RE, the control valve AHP217VL can be kept in normal operation. The valve opening of the control valve AHP218VL is slowly opened to the target opening through the disturbance test sequence program and then slowly closed. The real-time status of the liquid level control loop to be tested in this process is recorded, including the real-time liquid level of the liquid level control loop corresponding to AHP602RE, the real-time valve opening of the control valves AHP217VL and AHP218VL, and the valve opening demand.

[0041] In the embodiment of the present application, a disturbance test is performed on the liquid level control loop to be detected through the above-mentioned loop detection instruction, and during the process of performing the above-mentioned disturbance test, the corresponding real-time state of the above-mentioned liquid level control loop to be detected is recorded, so that the disturbance test can be performed online, that is, the daily liquid level changes are simulated during the operation of the liquid level control loop to be detected. In addition, during the disturbance test, the liquid level disturbance is generated by adjusting the valve opening of one of the control valves in the liquid level control loop to be detected, and the normal operation of other control valves is maintained, so that the impact of the disturbance test on the nuclear power unit can be reduced, and the normal operation of the nuclear power unit can be guaranteed.

[0042] S23, performing loop detection on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

[0043] Specifically, the change of the above-mentioned real-time state relative to the above-mentioned initial state can be determined, and then the loop detection of the above-mentioned liquid level control loop to be detected can be performed according to whether the above-mentioned change meets the preset change requirements. For example, if the state change value of the above-mentioned real-time state and the above-mentioned initial state meets the preset state threshold, it means that the liquid level control loop to be detected has no abnormal phenomenon (such as liquid level regulation divergence) due to the liquid level disturbance, and the corresponding loop detection result can be that the loop detection is normal, otherwise, the loop detection result can be that the loop detection is normal, and the above-mentioned state change value can include the liquid level change value, the valve opening change value, etc. At the same time, it should be noted that since the above-mentioned real-time state will change with time, the real-time state during the disturbance test may be greatly different from the initial state, and the real-time state before and after the disturbance test is completed may be less different from the initial state. Therefore, the above-mentioned preset state threshold can be set accordingly with time, for example, a larger state threshold is set when the disturbance test is carried out, and a smaller state threshold is set before and after the disturbance test is completed.

[0044] In the embodiment of the present application, the accuracy of the liquid level control loop detection can be improved by performing loop detection by recording the initial state and real-time state of the control loop to be detected. Specifically, when the liquid level control loop to be detected is running and a loop detection instruction is received, the initial state corresponding to the liquid level control loop to be detected is recorded, and then a disturbance test is performed on the liquid level control loop to be detected according to the loop detection instruction (i.e., the liquid level disturbance is created by adjusting the valve opening of the liquid level control loop to be detected), and the real-time state corresponding to the liquid level control loop to be detected during the above-mentioned disturbance test is recorded, which means that the above-mentioned detection method is to detect the overall operating state of the liquid level control loop to be detected according to the state (i.e., the initial state and the real-time state) before and after the disturbance test of the liquid level control loop to be detected when the liquid level control loop to be detected is running, so the limitations of manual inspection of local equipment can be avoided, thereby improving the accuracy of the liquid level control loop detection. In addition, since the above-mentioned detection method is performed when the liquid level control loop to be detected is running, it can be applied before the overhaul of the nuclear power plant, so that the liquid level control loop to be detected can be detected in advance, further improving the accuracy of the liquid level control loop detection.

[0045] In an optional embodiment of the present application, when the liquid level control circuit to be detected is running and a circuit detection instruction is received, before recording the initial state corresponding to the liquid level control circuit to be detected, the method further includes:

[0046] A disturbance test plan corresponding to the liquid level control loop to be detected is constructed, wherein the disturbance test plan includes information required for performing the disturbance test.

[0047] The disturbance test plan may include the steps for performing the disturbance test, the results of the disturbance test, the control valves that need to be adjusted during the disturbance test, the adjustment method of the control valves, the loop parameters that need to be recorded in the loop status, and other information.

[0048] In the embodiment of the present application, since the functions, loop structures and equipment compositions of different liquid level control loops are quite different, by constructing a disturbance test plan corresponding to the above-mentioned liquid level control loop to be tested, the liquid level control loop to be tested can be tested in a targeted manner to improve the accuracy of the loop detection.

[0049] Correspondingly, in the case of determining the disturbance test plan corresponding to the liquid level control loop to be detected, the above-mentioned recording of the initial state corresponding to the above-mentioned liquid level control loop to be detected includes:

[0050] According to the above disturbance test plan, the initial state corresponding to the above-mentioned liquid level control loop to be detected is recorded.

[0051] Optionally, before conducting a disturbance test, the loop parameters that need to be recorded (such as liquid level, valve opening of a specific control valve) can be determined according to the above-mentioned disturbance test plan, and then the initial state corresponding to the liquid level control loop to be tested can be determined by recording the above-mentioned loop parameters, thereby reducing the redundancy of data recording and improving the accuracy of loop detection.

[0052] In some embodiments, assuming that the liquid level control loop to be detected includes at least two control valves, the initial state includes at least an initial liquid level and an initial opening requirement, and the initial state corresponding to the liquid level control loop to be detected is recorded according to the disturbance test plan, including:

[0053] Detecting the valve states of the at least two control valves in the detection liquid level control circuit;

[0054] When the above-mentioned valve state meets the preset valve state requirements, the liquid level corresponding to the above-mentioned liquid level control circuit to be detected is recorded to obtain the above-mentioned initial liquid level, and the valve opening requirement corresponding to the first target control valve is recorded to obtain the above-mentioned initial opening requirement; the above-mentioned first target control valve is the control valve whose valve opening needs to be monitored when conducting the above-mentioned disturbance test as determined by the above-mentioned disturbance test plan.

[0055] Specifically, in order to prevent the disturbance test from affecting the normal operation of the nuclear power unit, it is possible to first detect whether the valve status of all control valves in the liquid level control loop is in the automatic control state. When the valve status of all control valves is in the automatic control state, it is determined that the preset valve status requirements are met; then the initial liquid level is recorded by the liquid level transmitter in the liquid level control loop to be detected, and the initial opening requirement corresponding to the control valve to be monitored (i.e., the first target control valve) is recorded according to the disturbance test plan. It should be noted that since there may be one or more liquid level transmitters in the liquid level control loop to be detected, there may be one or more corresponding initial liquid levels, and each initial liquid level may not be exactly the same due to the difference in the liquid level transmitter range and measurement errors.

[0056] For example, Figure 1 Taking the liquid level control loop corresponding to AHP602RE in the test as an example, assuming that the first target control valve determined according to the disturbance test plan is the control valve AHP217VL, when the liquid level control loop to be tested is operating normally, it is possible to first detect whether the control valves AHP217VL and AHP218VL are in the automatic control state. When it is determined that the control valves AHP217VL and AHP218VL are both in the automatic control state, the initial liquid level of the liquid level control loop corresponding to AHP602RE and the initial opening requirement of the control valve AHP217VL are recorded. In addition, since there are two liquid level transmitters (AHP003MN and AHP004MN) in the liquid level control loop to be tested, the recorded initial liquid levels may include two, for example, the initial liquid levels include 0.774m recorded by AHP003MN and 0.748m recorded by AHP004MN.

[0057] It should also be noted that if the valve state of any control valve is not in the automatic control state, it means that the valve state of the control valve does not meet the preset valve state requirements, and the disturbance test may affect the normal operation of the nuclear power unit. At this time, an alarm can be issued to prompt the operator to change the valve state of the control valve.

[0058] In some embodiments, the above-mentioned disturbance test is performed on the above-mentioned liquid level control loop to be detected according to the above-mentioned loop detection instruction, including:

[0059] Triggering a disturbance test instruction according to the above loop detection instruction;

[0060] The valve opening of the second target control valve is adjusted according to the above-mentioned disturbance test instruction until the valve opening of the above-mentioned second target control valve meets the preset opening threshold; the above-mentioned second target control valve is the control valve whose valve opening needs to be adjusted when performing the above-mentioned disturbance test as determined by the above-mentioned disturbance test plan.

[0061] Specifically, after recording the initial state of the liquid level control loop to be detected, the disturbance test instruction can be triggered by the above-mentioned loop detection instruction, and the second target control valve is transferred to the preset disturbance test sequence according to the above-mentioned disturbance test instruction, and then the valve opening of the second target control valve is adjusted according to the valve adjustment method preset in the disturbance test sequence, until the valve opening of the above-mentioned second target control valve meets the preset opening threshold. Optionally, the above-mentioned preset valve adjustment method may include: first opening the second target control valve to a preset first opening threshold according to a preset valve opening rate, and then closing the second target control valve to a preset second opening threshold according to a preset valve closing rate, wherein the above-mentioned preset first opening threshold is greater than the preset second opening threshold.

[0062] For example, Figure 1 Taking the liquid level control loop corresponding to AHP602RE in the above disturbance test as an example, assuming that the second target control valve determined according to the disturbance test plan is the control valve AHP218VL, the above disturbance test sequence control program can open the second target control valve to 20% (i.e., the preset first opening threshold) at a valve opening rate of 0.1% / 5s, and then close the second target control valve to 0% (i.e., the preset second opening threshold) at a valve closing rate of 0.1% / 5s.

[0063] In another optional embodiment of the present application, before adjusting the valve opening of the second target control valve according to the above-mentioned disturbance test instruction, it is also possible to determine whether the initial opening requirement of the second target control valve meets the preset opening requirement. If the initial opening requirement of the second target control valve meets the preset opening requirement, the valve opening of the second target control valve is adjusted through the disturbance test instruction; otherwise, an alarm is issued to prompt the operator to check the circuit.

[0064] For example, Figure 1 Taking the liquid level control loop corresponding to AHP602RE as an example, the second target control valve is the control valve AHP218VL, and the first target control valve is the control valve AHP217VL. Since the control valve AHP217VL is used to maintain the normal liquid level (for example, 0.77m), and the control valve AHP218VL is used to maintain the high liquid level (for example, 0.92m), when the liquid level control loop to be tested operates normally, the liquid level control loop to be tested adjusts the liquid level through the control valve AHP217VL (i.e., the first target control valve) and is in the normal liquid level control state. At this time, the opening requirement of the control valve AHP218VL is 0. If the valve opening of AHP218VL (i.e., the second target control valve) is adjusted according to the above disturbance test instruction, its corresponding initial opening requirement is not 0, indicating that the liquid level control loop to be tested may be in the emergency control state (i.e., the liquid level is controlled by the second target control valve) at this time, and the disturbance test may affect the operation of the nuclear power unit. At this time, an alarm can be issued to prompt the operator to check the loop.

[0065] In an optional embodiment of the present application, when a disturbance test is performed by adjusting the valve opening of the second target control valve (e.g., control valve AHP218VL), a liquid level disturbance is created. At this time, the first target control valve (e.g., control valve AHP217VL) is in an automatic control state, and the valve opening of the first target control valve (e.g., control valve AHP217VL) changes in real time to maintain a normal liquid level (i.e., 0.77 m), that is, the real-time state includes the real-time valve opening of the first target control valve. Before the loop detection of the liquid level control loop to be detected is performed according to the initial state and the real-time state, the following is also included:

[0066] The above-mentioned liquid level control loop to be detected is subjected to abnormality detection according to the real-time valve opening of the above-mentioned first target control valve to obtain an abnormality detection result.

[0067] Specifically, when adjusting the valve opening of the first target control valve for a disturbance test, it can be determined whether the change in the real-time valve opening of the first target control valve meets the preset change requirements. If the change in the real-time valve opening of the first target control valve meets the preset change requirements, it means that the first target valve can adjust the liquid level normally, and the corresponding abnormal detection result is that there is no abnormality, that is, the liquid level control circuit to be tested is normal. If the change in the real-time valve opening of the first target control valve does not meet the preset change requirements, it means that the first target valve cannot adjust the liquid level normally, and the corresponding abnormal detection result is that there is an abnormality, that is, the liquid level control circuit to be tested is abnormal. Optionally, the change value of the real-time valve opening within a preset time can be calculated. If the change value is less than a preset change threshold, the change in the real-time valve opening of the first target control valve meets the preset change requirements. Otherwise, the preset change requirements are not met.

[0068] In the embodiment of the present application, by performing abnormal detection on the liquid level control circuit to be detected through the real-time valve opening of the first target control valve, it is possible to detect in real time whether the liquid level control circuit to be detected is abnormal during the disturbance test, thereby improving the accuracy and real-time performance of abnormal detection.

[0069] Correspondingly, after obtaining the above abnormal detection result, the above loop detection is performed on the above liquid level control loop to be detected according to the above initial state and the above real-time state, including:

[0070] When the abnormal detection result indicates that the liquid level control circuit to be detected is normal, a circuit detection is performed on the liquid level control circuit to be detected according to the initial state and the real-time state.

[0071] In the embodiment of the present application, when the abnormal detection result indicates that the liquid level control circuit to be detected is normal, the liquid level control circuit to be detected can be more accurately detected based on the initial state and the real-time state. The process of the loop detection is similar to that of the above embodiment and will not be repeated here.

[0072] In some embodiments, since the control valve maintains the liquid level through the valve opening, it means that the valve opening and the liquid level may be in a one-to-one correspondence, so the real-time state also includes the real-time liquid level corresponding to the liquid level control loop to be detected, and the abnormality detection of the liquid level control loop to be detected according to the real-time valve opening of the first target control valve includes:

[0073] Performing abnormality detection on the liquid level control circuit to be detected according to the preset corresponding relationship between the real-time liquid level and the real-time valve opening;

[0074] or,

[0075] The to-be-detected liquid level control loop is detected for abnormality according to the change in the real-time liquid level and / or the real-time valve opening.

[0076] Specifically, assuming that the first target control valve is the control valve AHP217VL, when the control valve AHP217VL operates normally, its corresponding valve opening and liquid level will maintain a preset corresponding relationship (for example, 81.23% corresponds to a liquid level of 0.77m). If the real-time liquid level and the real-time valve opening of the first target control valve do not satisfy the preset corresponding relationship during the disturbance test, it indicates that the liquid level control loop to be detected is abnormal, otherwise, the liquid level control loop to be detected is normal. Alternatively, if it is detected that the change in the real-time liquid level and / or the real-time valve opening within a preset time exceeds a preset change threshold, it indicates that the liquid level control loop to be detected is abnormal, otherwise, the liquid level control loop to be detected is normal.

[0077] In the embodiment of the present application, by combining the above-mentioned real-time liquid level and / or real-time valve opening, abnormality detection can be performed more accurately on the liquid level control loop to be detected, thereby improving the accuracy of abnormality detection.

[0078] In some embodiments, in order to better determine the change of the liquid level control loop to be detected before and after the disturbance test, when the valve opening of the second target valve meets the preset opening threshold, the loop detection of the liquid level control loop to be detected according to the initial state and the real-time state includes:

[0079] Determine the target state according to the real-time state, wherein the target state includes a target liquid level and a target opening requirement; the target liquid level is the liquid level corresponding to the liquid level control circuit to be detected when the valve opening of the second target valve meets a preset opening threshold, and the target opening requirement is the valve opening requirement corresponding to the first target control valve when the valve opening of the second target valve meets a preset opening threshold;

[0080] Determine a first comparison result according to the initial liquid level and the target liquid level;

[0081] Determine a second comparison result according to the initial opening requirement and the target opening requirement;

[0082] The first comparison result and the second comparison result are used to perform loop detection on the liquid level control loop to be detected.

[0083] Specifically, when the valve opening of the second target valve meets the preset opening threshold, it indicates that the disturbance test is about to end or has ended, and the real-time state at this time is determined as the target state (including the target liquid level and the target opening requirement), and then the first difference between the target liquid level and the initial liquid level is calculated. If the first difference is less than or equal to the preset first difference threshold, the corresponding first comparison result is that the initial liquid level and the target liquid level are consistent. Similarly, the second difference between the initial opening requirement and the target opening requirement is calculated. If the second difference is less than or equal to the preset butterfly second difference threshold, the corresponding second comparison result is that the initial opening requirement and the target opening requirement are consistent. When the above-mentioned first comparison result and the second comparison result are both consistent, it is determined that the liquid level control circuit to be detected is normal. Otherwise, it is determined that the liquid level control circuit to be detected is normal.

[0084] It should be noted that since there may be multiple initial liquid levels, when calculating the first difference between the target liquid level and the initial liquid level, it is necessary to correspond to the liquid level transmitter, for example, Figure 1 Taking the liquid level control loop corresponding to AHP602RE as an example, the difference between the initial liquid level and the target liquid level corresponding to the liquid level transmitter AHP003MN is calculated, and the difference between the initial liquid level and the target liquid level corresponding to the liquid level transmitter AHP004MN is calculated.

[0085] In an embodiment of the present application, when the valve opening of the above-mentioned second target valve meets the preset opening threshold, the above-mentioned liquid level control loop to be detected is subjected to loop detection according to the first comparison result and the second comparison result, so as to better compare the changes of the liquid level control loop to be detected before and after the disturbance test, and improve the accuracy of the loop detection.

[0086] It should also be noted that after the valve opening of the above-mentioned second target valve meets the preset opening threshold, the valve state of the second target valve can be adjusted to an automatic control state, thereby exiting the above-mentioned disturbance test sequence control program to avoid affecting the operation of the liquid level control loop to be detected.

[0087] In another optional embodiment of the present application, after performing abnormality detection on the liquid level control circuit to be detected according to the real-time valve opening of the first target control valve and obtaining the abnormality detection result, the method further includes:

[0088] When the abnormal detection result indicates that the liquid level control circuit to be detected is abnormal, an alarm is issued.

[0089] Specifically, when the abnormal detection result indicates that the liquid level control circuit to be detected is abnormal, it means that during the disturbance test, the liquid level control circuit to be detected cannot operate normally, and an alarm can be used to prompt the operator to intervene. The above-mentioned alarm can include one or more of an alarm pop-up window on the display device, a voice reminder, a text reminder, etc. Of course, the alarm can also be issued through other devices, such as an alarm through an audible and visual alarm, etc., which is not limited here.

[0090] In another optional embodiment of the present application, it also includes:

[0091] At least one of the disturbance test plan, the initial state, and the real-time state is visualized to obtain a visualization result.

[0092] Specifically, the disturbance test plan (such as the steps of the disturbance test, etc.) can be displayed in real time in text form on the left side of the display device, so as to display the progress of the disturbance test in real time; the above-mentioned initial state and real-time state are displayed on the right side of the display device, so as to display the state of the entire liquid level control loop to be detected and related parameters in real time. It should also be noted that the display method of the above-mentioned initial state and real-time state includes one or more of text display, chart display (for example, displaying the liquid level change, valve opening change, etc. in the form of a line graph), and image display (for example, displaying the entire liquid level control loop to be detected in the form of a simple diagram), which is not limited here.

[0093] In an embodiment of the present application, by visually displaying the above-mentioned disturbance test plan, the above-mentioned initial state, and at least one of the above-mentioned real-time states, the process of the disturbance test of the liquid level control loop to be detected and the loop state corresponding to the liquid level control loop to be detected can be intuitively displayed, thereby improving the interpretability of the loop detection.

[0094] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0095] Corresponding to the detection method of the liquid level control circuit of the nuclear power plant described in the above embodiment, Figure 3 A schematic diagram of the structure of a detection device for a liquid level control circuit of a nuclear power plant provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0096] Reference Figure 3 The device may be a detection device 31 for a liquid level control loop of a nuclear power plant. The detection device 31 for a liquid level control loop of a nuclear power plant may include a state recording module 311, a disturbance test module 312 and a loop detection module 313.

[0097] Reference Figure 3 , the detection device of the liquid level control circuit of the nuclear power plant comprises:

[0098] The state recording module 311 is used to record the initial state corresponding to the liquid level control loop to be detected when the liquid level control loop to be detected is running and receives a loop detection instruction;

[0099] The disturbance test module 312 is used to perform a disturbance test on the liquid level control loop to be detected according to the loop detection instruction, and record the real-time state of the liquid level control loop to be detected during the disturbance test; wherein the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control loop to be detected by adjusting the valve opening of the control valve in the liquid level control loop to be detected;

[0100] The loop detection module 313 is used to perform loop detection on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

[0101] In an optional embodiment of the present application, the detection device 31 of the liquid level control loop of the nuclear power plant further includes a plan construction module, which is used to record the initial state corresponding to the liquid level control loop to be detected before the liquid level control loop to be detected is running and a loop detection instruction is received, including:

[0102] A disturbance test plan corresponding to the liquid level control loop to be detected is constructed, wherein the disturbance test plan includes information required for performing the disturbance test.

[0103] Correspondingly, when determining the disturbance test plan corresponding to the liquid level control loop to be detected, the state recording module 311 records the initial state corresponding to the liquid level control loop to be detected, including:

[0104] According to the above disturbance test plan, the initial state corresponding to the above-mentioned liquid level control loop to be detected is recorded.

[0105] In some embodiments, assuming that the liquid level control loop to be detected includes at least two control valves, and the initial state includes at least an initial liquid level and an initial opening requirement, the state recording module 311 records the initial state corresponding to the liquid level control loop to be detected according to the disturbance test plan, including:

[0106] Detecting the valve states of the at least two control valves in the detection liquid level control circuit;

[0107] When the above-mentioned valve state meets the preset valve state requirements, the liquid level corresponding to the above-mentioned liquid level control circuit to be detected is recorded to obtain the above-mentioned initial liquid level, and the valve opening requirement corresponding to the first target control valve is recorded to obtain the above-mentioned initial opening requirement; the above-mentioned first target control valve is the control valve whose valve opening needs to be monitored when conducting the above-mentioned disturbance test as determined by the above-mentioned disturbance test plan.

[0108] In some embodiments, when the disturbance test module 312 performs a disturbance test on the liquid level control loop to be tested according to the loop detection instruction, the following steps are included:

[0109] Triggering a disturbance test instruction according to the above loop detection instruction;

[0110] The valve opening of the second target control valve is adjusted according to the above-mentioned disturbance test instruction until the valve opening of the above-mentioned second target control valve meets the preset opening threshold; the above-mentioned second target control valve is the control valve whose valve opening needs to be adjusted when performing the above-mentioned disturbance test as determined by the above-mentioned disturbance test plan.

[0111] In an optional embodiment of the present application, the real-time state includes the real-time valve opening of the first target control valve, and the detection device 31 of the liquid level control loop of the nuclear power plant further includes an abnormality detection module, which is used for performing a loop detection on the liquid level control loop to be detected according to the initial state and the real-time state before the loop detection, including:

[0112] The above-mentioned liquid level control loop to be detected is subjected to abnormality detection according to the real-time valve opening of the above-mentioned first target control valve to obtain an abnormality detection result.

[0113] Correspondingly, after obtaining the abnormality detection result, the loop detection module 313 performs loop detection on the liquid level control loop to be detected according to the initial state and the real-time state, including:

[0114] When the abnormal detection result indicates that the liquid level control circuit to be detected is normal, a circuit detection is performed on the liquid level control circuit to be detected according to the initial state and the real-time state.

[0115] In some embodiments, since the control valve maintains the liquid level through the valve opening, it means that the valve opening and the liquid level may be in a one-to-one correspondence, so the real-time state also includes the real-time liquid level corresponding to the liquid level control loop to be detected, and the abnormality detection module, when performing abnormality detection on the liquid level control loop to be detected according to the real-time valve opening of the first target control valve, includes:

[0116] Performing abnormality detection on the liquid level control circuit to be detected according to the preset corresponding relationship between the real-time liquid level and the real-time valve opening;

[0117] or,

[0118] The to-be-detected liquid level control loop is detected for abnormality according to the change in the real-time liquid level and / or the real-time valve opening.

[0119] In some embodiments, in order to better determine the change of the liquid level control loop to be detected before and after the disturbance test, when the valve opening of the second target valve meets the preset opening threshold, the loop detection module 313 performs loop detection on the liquid level control loop to be detected according to the initial state and the real-time state, including:

[0120] Determine the target state according to the real-time state, wherein the target state includes a target liquid level and a target opening requirement; the target liquid level is the liquid level corresponding to the liquid level control circuit to be detected when the valve opening of the second target valve meets a preset opening threshold, and the target opening requirement is the valve opening requirement corresponding to the first target control valve when the valve opening of the second target valve meets a preset opening threshold;

[0121] Determine a first comparison result according to the initial liquid level and the target liquid level;

[0122] Determine a second comparison result according to the initial opening requirement and the target opening requirement;

[0123] The first comparison result and the second comparison result are used to perform loop detection on the liquid level control loop to be detected.

[0124] In another optional embodiment of the present application, the detection device 31 of the liquid level control circuit of the nuclear power plant further includes an alarm module, which is used to perform abnormal detection on the liquid level control circuit to be detected according to the real-time valve opening of the first target control valve, and after obtaining the abnormal detection result, includes:

[0125] When the abnormal detection result indicates that the liquid level control circuit to be detected is abnormal, an alarm is issued.

[0126] In another optional embodiment of the present application, the detection device 31 of the liquid level control circuit of the nuclear power plant further includes a display module for:

[0127] At least one of the disturbance test plan, the initial state, and the real-time state is visualized to obtain a visualization result.

[0128] It should be noted that the information interaction, execution process, etc. between the devices / units are based on the same concept as the method embodiments of the present application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0129] Figure 4 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 4 As shown, the electronic device 4 of this embodiment includes: at least one processor 40 ( Figure 4 The at least one processor 40 includes a memory 41 and a computer program 42 stored in the memory 41 and executable on the at least one processor 40. When the processor 40 executes the computer program 42, the steps in any of the method embodiments are implemented.

[0130] The electronic device 4 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 4 It is only an example of the electronic device 4 and does not constitute a limitation of the electronic device 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include an input sending device, a network access device, a bus, etc.

[0131] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0132] In some embodiments, the memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 4. Further, the memory 41 may also include both an internal storage unit of the electronic device 4 and an external storage device. The memory 41 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 41 may also be used to temporarily store data that has been sent or is to be sent.

[0133] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the functional units and modules is used as an example. In practical applications, the function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0134] An embodiment of the present application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor implements the steps in any of the method embodiments when executing the computer program.

[0135] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the various method embodiments can be implemented.

[0136] An embodiment of the present application provides a computer program product. When the computer program product runs on an electronic device, the electronic device can implement the steps in the various method embodiments when executing the computer program product.

[0137] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0138] In the embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0139] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0140] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0142] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for detecting a liquid level control loop in a nuclear power plant, characterized in that: include: When the liquid level control loop to be detected is running and a loop detection instruction is received, recording the initial state corresponding to the liquid level control loop to be detected; A disturbance test is performed on the liquid level control circuit to be detected according to the circuit detection instruction, and during the disturbance test, the real-time state corresponding to the liquid level control circuit to be detected is recorded; wherein the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control circuit to be detected by adjusting the valve opening of the control valve in the liquid level control circuit to be detected; A loop detection is performed on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

2. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 1, characterized in that: In the case where the liquid level control circuit to be detected is running and a circuit detection instruction is received, before recording the initial state corresponding to the liquid level control circuit to be detected, the method further includes: Constructing a disturbance test plan corresponding to the liquid level control loop to be detected, wherein the disturbance test plan includes information required for performing the disturbance test; The recording of the initial state corresponding to the liquid level control circuit to be detected includes: The initial state corresponding to the liquid level control loop to be detected is recorded according to the disturbance test plan.

3. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 2, characterized in that: The liquid level control loop to be detected includes at least two control valves, the initial state includes at least an initial liquid level and an initial opening requirement, and recording the initial state corresponding to the liquid level control loop to be detected according to the disturbance test plan includes: Detecting the valve states of at least two control valves in the liquid level control circuit to be detected; When the valve state meets the preset valve state requirement, the liquid level corresponding to the liquid level control loop to be detected is recorded to obtain the initial liquid level, and the valve opening requirement corresponding to the first target control valve is recorded to obtain the initial opening requirement; the first target control valve is the control valve whose valve opening needs to be monitored when conducting the disturbance test as determined by the disturbance test plan.

4. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 3, characterized in that: The method of performing a disturbance test on the liquid level control loop to be detected according to the loop detection instruction comprises: triggering a disturbance test instruction according to the loop detection instruction; The valve opening of the second target control valve is adjusted according to the disturbance test instruction until the valve opening of the second target control valve meets a preset opening threshold; the second target control valve is the control valve whose valve opening needs to be adjusted when performing the disturbance test as determined by the disturbance test plan.

5. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 4, characterized in that: The real-time state includes the real-time valve opening of the first target control valve. Before performing loop detection on the liquid level control loop to be detected according to the initial state and the real-time state, the method further includes: Performing an abnormality detection on the liquid level control loop to be detected according to the real-time valve opening of the first target control valve to obtain an abnormality detection result; The performing loop detection on the liquid level control loop to be detected according to the initial state and the real-time state comprises: When the abnormal detection result indicates that the liquid level control circuit to be detected is normal, a circuit detection is performed on the liquid level control circuit to be detected according to the initial state and the real-time state.

6. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 5, characterized in that: The real-time status also includes the real-time liquid level corresponding to the liquid level control circuit to be detected, and the abnormality detection of the liquid level control circuit to be detected according to the real-time valve opening of the first target control valve includes: Performing abnormality detection on the liquid level control circuit to be detected according to a preset corresponding relationship between the real-time liquid level and the real-time valve opening; or, The to-be-detected liquid level control loop is detected for abnormality according to the change in the real-time liquid level and / or the real-time valve opening.

7. The method for detecting a liquid level control circuit in a nuclear power plant according to claim 5, characterized in that: When the valve opening of the second target valve satisfies a preset opening threshold, performing loop detection on the to-be-detected liquid level control loop according to the initial state and the real-time state includes: Determine a target state according to the real-time state, wherein the target state includes a target liquid level and a target opening requirement; the target liquid level is the liquid level corresponding to the liquid level control loop to be detected when the valve opening of the second target valve meets a preset opening threshold, and the target opening requirement is the valve opening requirement corresponding to the first target control valve when the valve opening of the second target valve meets a preset opening threshold; Determine a first comparison result according to the initial liquid level and the target liquid level; Determining a second comparison result according to the initial opening requirement and the target opening requirement; The first comparison result and the second comparison result are used to perform loop detection on the liquid level control loop to be detected.

8. The method for detecting a liquid level control circuit of a nuclear power plant according to any one of claims 5 to 7, characterized in that: After performing abnormality detection on the liquid level control circuit to be detected according to the real-time valve opening of the first target control valve and obtaining the abnormality detection result, the method further includes: When the abnormal detection result indicates that the liquid level control circuit to be detected is abnormal, an alarm is issued.

9. The method for detecting a liquid level control circuit of a nuclear power plant according to any one of claims 2 to 5, characterized in that: Also includes: At least one of the disturbance test plan, the initial state, and the real-time state is visualized to obtain a visualization result.

10. A detection device for a liquid level control circuit of a nuclear power plant, characterized in that: include: A state recording module, used for recording the initial state corresponding to the liquid level control loop to be detected when the liquid level control loop to be detected is running and a loop detection instruction is received; A disturbance test module, used for performing a disturbance test on the liquid level control loop to be detected according to the loop detection instruction, and recording the real-time state corresponding to the liquid level control loop to be detected during the disturbance test; wherein the disturbance test causes a disturbance in the liquid level corresponding to the liquid level control loop to be detected by adjusting the valve opening of the control valve in the liquid level control loop to be detected; The loop detection module is used to perform loop detection on the liquid level control loop to be detected according to the initial state and the real-time state to obtain a loop detection result.

11. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 9 is implemented.

12. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

13. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 9 when being executed.

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