Nuclear steam supply system function detection method, device, computer equipment and medium

Abstract

The present application relates to a method, device, equipment, storage medium and product for detecting the functions of a nuclear steam supply system. The method includes: determining first function status information corresponding to a target nuclear steam supply system function according to the first operating status of system equipment in the nuclear steam supply system; obtaining the second operating status of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determining second function status information of the target nuclear steam supply system function; determining target system equipment that has suffered a disaster, determining associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining third function status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment; and determining the function status of the target nuclear steam supply system function according to the first function status information, the second function status information and the third function status information. This method can improve the detection efficiency and accuracy.

Description

Technical Field

[0001] This application relates to the technical field of nuclear power plant function detection, and in particular to a method, device, computer device, storage medium, and computer program product for detecting the functions of a nuclear steam supply system. Background Art

[0002] Due to the particularity of nuclear power plants, in the event of a safety accident, in order to reduce the impact of the safety accident on the human body and the surrounding environment, effective accident mitigation measures should be taken in a timely manner; at the same time, in order to minimize the losses caused by the safety accident, it is necessary to promptly determine which functions in the nuclear steam supply system are available and which are not, so as to perform configuration operations such as commissioning, shutdown, or isolation according to the function status of the nuclear steam supply system and adjust the operation of the nuclear steam supply system. That is to say, in the event of a safety accident, compared with the availability information of the system equipment in the nuclear steam supply system, the operating personnel are more concerned about the availability information of the functions of the nuclear steam supply system, that is, determining whether the functions of the nuclear steam supply system are available.

[0003] In traditional technical solutions, generally, the operating personnel need to verify the operating status of the system equipment in the nuclear steam supply system and the operating status of the support system, and perform a series of detection operations to determine whether other system equipment associated with the target system equipment affected by the disaster is available, and then determine the availability information of the functions of the nuclear steam supply system. Obviously, in traditional technical solutions, when it is necessary to determine the function status of the functions of the nuclear steam supply system, not only is the operation process complex, the detection efficiency is low, but also a large amount of human resources are consumed. In addition, there may be situations of human error in the manual detection process, resulting in inaccurate detection of the functions of the nuclear steam supply system.

[0004] Therefore, how to improve the convenience of detecting the available status of the functions of the nuclear steam supply system, improve the detection efficiency, reduce the consumption of human resources, and improve the detection accuracy is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a method, device, computer device, computer-readable storage medium, and computer program product for detecting the functions of a nuclear steam supply system, which can improve the convenience of detecting the available status of the functions of the nuclear steam supply system, improve the detection efficiency, reduce the consumption of human resources, and improve the detection accuracy.

[0006] In a first aspect, this application provides a method for detecting the functions of a nuclear steam supply system. The method includes:

[0007] Determine first function status information corresponding to a target nuclear steam supply system function according to the first operating status of the system equipment in the nuclear steam supply system;

[0008] Obtain the second operating state of the support system corresponding to the function of the target nuclear steam supply system in the nuclear steam supply system, and determine the second function state information of the function of the target nuclear steam supply system;

[0009] Determine the target system equipment where a disaster occurs, determine the associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determine the third function state information corresponding to the function of the target nuclear steam supply system according to the target system equipment and the associated system equipment;

[0010] Determine the function state of the function of the target nuclear steam supply system according to the first function state information, the second function state information, and the third function state information.

[0011] In one embodiment, the determining the target system equipment where a disaster occurs, determining the associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining the third function state information corresponding to the function of the target nuclear steam supply system according to the target system equipment and the associated system equipment includes:

[0012] Based on the disaster detection information of each system equipment, determine the target system equipment where a disaster occurs, and determine the first available state of the target system equipment;

[0013] Determine the second available state of the associated system equipment in the same fire compartment as the target system equipment through probabilistic safety analysis;

[0014] Determine the third function state information corresponding to the function of the target nuclear steam supply system according to the first available state of the target system equipment and the second available state of the associated system equipment.

[0015] In one embodiment, the determining the second available state of the associated system equipment in the same fire compartment as the target system equipment through probabilistic safety analysis includes:

[0016] Set the first available information for the associated system equipment in the same sub-compartment as the target system equipment; wherein, the sub-compartment is an area obtained by dividing the fire compartment according to a preset method;

[0017] Arrange and combine each sub-compartment, and calculate the safety probability of each arrangement and combination associated with the target system equipment according to the association relationship of the system equipment in each sub-compartment;

[0018] Determine the second available information of the associated system devices in each of the sub - partitions according to the safety probability and the corresponding relationship between the system devices and the sub - partitions;

[0019] Determine the second available state of the associated system devices in the same fire compartment as the target system device according to the first available information and the second available information.

[0020] In one embodiment, the obtaining the second operating state of the support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system and determining the second function state information of the target nuclear steam supply system function includes:

[0021] Obtain the second operating state of the support system corresponding to the target nuclear steam supply system function;

[0022] Determine the second function state information of the target nuclear steam supply system function according to the number, connection relationship of the support system and the second operating state.

[0023] In one embodiment, if the support system is a cold source system, the obtaining the second operating state of the support system corresponding to the target nuclear steam supply system function includes:

[0024] Obtain the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, the outlet pressure of the cooling pump, the temperature of the cooling medium and the flow rate of the cooling medium corresponding to the target nuclear steam supply system function.

[0025] In one embodiment, the determining the second function state information of the target nuclear steam supply system function according to the number, connection relationship of the support system and the second operating state includes:

[0026] If the number of the support systems is 1, when it is determined according to the second operating state that the support system has a fault, determine that the second function state information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second function state information of the target nuclear steam supply system function is available.

[0027] In one embodiment, the determining the second function state information of the target nuclear steam supply system function according to the number, connection relationship of the support system and the second operating state includes:

[0028] If the number of the support systems is multiple, and the multiple support systems are connected to the nuclear steam supply system redundantly, when it is determined that all the multiple support systems have failures according to the second operating states of the support systems, determine that the second functional state information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional state information of the target nuclear steam supply system function is available.

[0029] In one embodiment, if the temperature of the cooling pump bearing is greater than the first temperature threshold, determine that the support system has a failure.

[0030] In one embodiment, if the temperature of the cooling pump motor winding is greater than the second temperature threshold, determine that the support system has a failure.

[0031] In one embodiment, if the inlet pressure of the cooling pump is less than the first pressure threshold, determine that the support system has a failure.

[0032] In one embodiment, if the outlet pressure of the cooling pump is less than the second pressure threshold, determine that the support system has a failure.

[0033] In one embodiment, if the temperature of the cooling medium is greater than the third temperature threshold, determine that the support system has a failure.

[0034] In one embodiment, if the flow rate of the cooling medium is less than the first flow rate threshold, determine that the support system has a failure.

[0035] In one embodiment, the system equipment includes a signal acquisition device and an execution device; determining the first functional state information corresponding to the target nuclear steam supply system function according to the first operating state of the system equipment in the nuclear steam supply system includes:

[0036] Determine the first operating information of the signal acquisition device according to whether the signal input information of the signal acquisition device exceeds the normal range and whether the signal acquisition device has wiring or disconnection faults;

[0037] Determine the second operating information of the execution device according to whether the execution device has a fault message;

[0038] Determine the first functional state information corresponding to the target nuclear steam supply system function according to the first operating information and the second operating information.

[0039] In one embodiment, the method further includes:

[0040] Obtain the current state function parameters of the nuclear steam supply system, and determine the current degradation degree of the state function according to the current state function parameters;

[0041] Determine the current accident handling strategy corresponding to the current degradation level according to the corresponding relationship between the preset degradation level and the accident handling strategy; the current accident handling strategy includes current mitigation measures and a target safe shutdown state;

[0042] Determine the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy.

[0043] In one embodiment, the method further includes:

[0044] Determine the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation level.

[0045] In one embodiment, the determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation level includes:

[0046] If there is a target state function with the current degradation level being severe degradation, set the adjustment priority of the configuration parameters corresponding to the target state function to the highest priority;

[0047] In one embodiment, the determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation level includes:

[0048] If there is no state function with the current degradation level being severe degradation, determine the adjustment priority of the configuration parameters corresponding to each state function according to the type of the state function.

[0049] In one embodiment, the determining the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy includes:

[0050] Determine the target state function parameters corresponding to the current state function parameters of the nuclear steam supply system;

[0051] Calculate the actual deviation value between the current state function parameters and the target state function parameters; the target state function parameters are parameters of the same type as the current state function parameters;

[0052] Determine the configuration parameters of the target nuclear steam supply system function according to the actual deviation value and the preset deviation allowable range.

[0053] In one embodiment, the method further includes:

[0054] Display the configuration parameters, the function state, and the third operating state corresponding to the target nuclear steam supply system function through a visual image.

[0055] In a second aspect, the present application also provides a device for detecting the functions of a nuclear steam supply system. The device includes:

[0056] A first determination module, configured to determine first function status information corresponding to a target nuclear steam supply system function according to a first operating state of system equipment in the nuclear steam supply system;

[0057] A second determination module, configured to obtain a second operating state of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second function status information of the target nuclear steam supply system function;

[0058] A third determination module, configured to determine a target system equipment where a disaster occurs, determine associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determine third function status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment;

[0059] An integrated determination module, configured to determine the function status of the target nuclear steam supply system function according to the first function status information, the second function status information, and the third function status information.

[0060] In a third aspect, the present application also provides a computer device. The computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0061] Determine first function status information corresponding to a target nuclear steam supply system function according to a first operating state of system equipment in the nuclear steam supply system;

[0062] Obtain a second operating state of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second function status information of the target nuclear steam supply system function;

[0063] Determine a target system equipment where a disaster occurs, determine associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determine third function status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment;

[0064] Determine the function status of the target nuclear steam supply system function according to the first function status information, the second function status information, and the third function status information.

[0065] Fourthly, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0066] Determine first functional state information corresponding to a target nuclear steam supply system function according to a first operating state of system equipment in a nuclear steam supply system;

[0067] Obtain a second operating state of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second functional state information of the target nuclear steam supply system function;

[0068] Determine a target system equipment where a disaster occurs, determine associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determine third functional state information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment;

[0069] Determine the functional state of the target nuclear steam supply system function according to the first functional state information, the second functional state information, and the third functional state information.

[0070] Fifthly, the present application also provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0071] Determine first functional state information corresponding to a target nuclear steam supply system function according to a first operating state of system equipment in a nuclear steam supply system;

[0072] Obtain a second operating state of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second functional state information of the target nuclear steam supply system function;

[0073] Determine a target system equipment where a disaster occurs, determine associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determine third functional state information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment;

[0074] Determine the functional state of the target nuclear steam supply system function according to the first functional state information, the second functional state information, and the third functional state information.

[0075] The above nuclear steam supply system function detection method, device, computer equipment, storage medium and computer program product. In this method, the first function status information and the second function status information of the target nuclear steam supply system function are respectively determined according to the operating status of the system equipment and the operating status of the support system. After determining the target system equipment where a disaster occurs, the associated system equipment affected by the disaster of the target system equipment is determined through probabilistic safety analysis, and the third function status information corresponding to the target nuclear steam supply system function is determined according to the target system equipment and the associated system equipment. According to the first function status information, the second function status information and the third function status information, the function status of the target nuclear steam supply system function is determined. This method replaces the process of manually performing detection operations through probabilistic safety analysis to achieve the purpose of determining whether other system equipment associated with the target system equipment where a disaster occurs is available. Therefore, this method can improve the convenience of detecting the available status of the nuclear steam supply system function and reduce the consumption of human resources at the same time. In addition, since manual operation is avoided, the situation of human factor diagnosis errors that may exist in the manual detection process can be avoided, and the detection accuracy can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 FIG. is an application environment diagram of the nuclear steam supply system function detection method in an embodiment;

[0077] Figure 2 FIG. is a flowchart of the nuclear steam supply system function detection method in an embodiment;

[0078] Figure 3 FIG. is a schematic diagram of the judgment logic of the nuclear steam supply system function detection method in an embodiment;

[0079] Figure 4 FIG. is a flowchart of the step of determining the target system equipment where a disaster occurs, determining the associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining the third function status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment in an embodiment;

[0080] Figure 5 FIG. is a schematic diagram of a method for determining the loss of the cold source provided in an embodiment;

[0081] Figure 6 FIG. is a flowchart of the nuclear steam supply system function detection method in another embodiment;

[0082] Figure 7 FIG. is a flowchart of the step of determining the configuration parameters of the target nuclear steam supply system function in another embodiment;

[0083] Figure 8Schematic diagram of the function monitoring and display screen of the nuclear steam supply system in an embodiment;

[0084] Figure 9 is Figure 8 Partial enlarged view of the function monitoring and display screen of the nuclear steam supply system shown;

[0085] Figure 10 Structural block diagram of the function detection device of the nuclear steam supply system in an embodiment;

[0086] Figure 11 Internal structure diagram of a computer device in an embodiment. Detailed implementation manners

[0087] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0088] The function detection method of the nuclear steam supply system provided by the embodiments of the present application can be applied to an application environment as shown in Figure 1 ; wherein, the application environment includes a terminal device 102 and a nuclear steam supply system 104. The nuclear steam supply system (NSSS) 104 refers to a system in a nuclear power plant that generates steam by using the heat energy generated by the fission reaction of nuclear fuel in a nuclear reactor. The nuclear steam supply system mainly includes a nuclear reactor, a steam generator, a primary coolant system and its auxiliary systems, and is generally used for power generation, driving and heating. The terminal device 102 is communicatively connected to the nuclear steam supply system 104, determines first function status information corresponding to a target nuclear steam supply system function according to the first operating status of the system devices in the nuclear steam supply system; obtains the second operating status of the support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determines second function status information of the target nuclear steam supply system function; determines a target system device where a disaster occurs, determines associated system devices affected by the disaster of the target system device through probabilistic safety analysis, and determines third function status information corresponding to the target nuclear steam supply system function according to the target system device and the associated system devices; determines the function status of the target nuclear steam supply system function according to the first function status information, the second function status information and the third function status information. Among them, the terminal device 102 can be but is not limited to various personal computers, laptop computers, smart phones, tablet computers, etc.

[0089] In an embodiment, as shown in Figure 2 a function detection method of the nuclear steam supply system is provided, and this method is applied to Figure 1Taking the terminal device in [ID] as an example, the method includes the following steps:

[0090] Step 202: Determine first functional status information corresponding to the target nuclear steam supply system function according to the first operating status of the system devices in the nuclear steam supply system.

[0091] Herein, the system devices refer to the devices corresponding to the target nuclear steam supply system function for the nuclear steam supply system of a nuclear power plant; the system devices include signal acquisition devices and execution devices; the signal acquisition devices are used to monitor the operating parameters of the nuclear steam supply system, and the execution devices are used to execute operations for realizing corresponding functions. It can be understood that for different operating statuses of the system devices corresponding to the target nuclear steam supply system function, the first functional status information corresponding to the target nuclear steam supply system function will be different. The first functional status information can specifically be information indicating that the target nuclear steam supply system function is available and information indicating that the target nuclear steam supply system function is unavailable.

[0092] Step 204: Obtain the second operating status of the support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second functional status information of the target nuclear steam supply system function.

[0093] Specifically, the support system refers to the general term for auxiliary systems that provide power, cold source or gas source for the nuclear steam supply system of a nuclear power plant; in actual operation, for different nuclear steam supply system functions, the required support systems may be different, so it is necessary to determine the support system corresponding to the target nuclear steam supply system function, and determine the second functional status information of the target nuclear steam supply system function according to the second operating status of the support system corresponding to the target nuclear steam supply system function. It can be understood that for different operating statuses of the support system corresponding to the target nuclear steam supply system function, the second functional status information corresponding to the target nuclear steam supply system function will be different. The second functional status information can specifically be information indicating that the target nuclear steam supply system function is available and information indicating that the target nuclear steam supply system function is unavailable.

[0094] Step 206: Determine the target system device where a disaster occurs, determine the associated system devices affected by the disaster of the target system device through probabilistic safety analysis, and determine third functional status information corresponding to the target nuclear steam supply system function according to the target system device and the associated system devices.

[0095] Specifically, a disaster generally refers to a fire occurring in the system equipment, or it can also be other abnormal conditions that occur in the system equipment. Such abnormal conditions will not only affect the normal operation of the target system equipment where the abnormal conditions occur, but also affect the normal operation of the associated system equipment associated with the target system equipment. After determining the target system equipment where the disaster occurs, through probabilistic safety analysis, the associated system equipment affected by the disaster of the target system equipment is determined. According to the corresponding relationship between the target system equipment and the associated system equipment and the functions of the target nuclear steam supply system, the third functional status information of the target nuclear steam supply system function is determined. The third functional status information can specifically be information indicating that the target nuclear steam supply system function is available and information indicating that the target nuclear steam supply system function is unavailable.

[0096] Step 208: Determine the functional status of the target nuclear steam supply system function according to the first functional status information, the second functional status information, and the third functional status information.

[0097] Specifically, after determining the first functional status information, the second functional status information, and the third functional status information corresponding to the target nuclear steam supply system function, the functional status of the target nuclear steam supply system function is determined by performing a logical judgment on the three. Among them, the functional status of the target nuclear steam supply system function being available indicates that the target nuclear steam supply system function is currently in a usable state; the functional status of the target nuclear steam supply system function being unavailable indicates that the target nuclear steam supply system function is currently in an unusable state.

[0098] Figure 3 A schematic diagram of the judgment logic of a method for detecting the functions of a nuclear steam supply system is provided; as Figure 3 shown, when it is determined that the first functional status information, the second functional status information, and the third functional status information corresponding to the target nuclear steam supply system function are all available, it is determined that the functional status of the target nuclear steam supply system function is available; that is, only when it is determined that the system equipment corresponding to the target nuclear steam supply system function is available, the support system corresponding to the target nuclear steam supply system function is available, and the target nuclear steam supply system function is available in the event of a disaster, is it determined that the functional status of the target nuclear steam supply system function is available.

[0099] Moreover, the operator can further determine whether the target nuclear steam supply system function is temporarily unavailable or permanently unavailable based on the determined first function status information, second function status information, and third function status information. Herein, temporarily unavailable means that the current target nuclear steam supply system function is in an unavailable state but may be restored to an available state through restoration actions; permanently unavailable indicates that the current target nuclear steam supply system function is in an unavailable state and cannot be restored or this function will no longer be considered for use in subsequent mitigation measures. It should be noted that in actual operation, after determining the function status of the target nuclear steam supply system function, the operator can perform configuration operations such as commissioning, decommissioning, or isolation on the target nuclear steam supply system function according to the determined information.

[0100] The method for detecting the function of the nuclear steam supply system provided in this embodiment determines the first function status information and the second function status information of the target nuclear steam supply system function according to the operating status of the system equipment and the operating status of the support system respectively. After determining the target system equipment where a disaster occurs, the associated system equipment affected by the disaster of the target system equipment is determined through probabilistic safety analysis, and the third function status information corresponding to the target nuclear steam supply system function is determined according to the target system equipment and the associated system equipment. According to the first function status information, the second function status information, and the third function status information, the function status of the target nuclear steam supply system function is determined. This method replaces the process of manually performing detection operations through probabilistic safety analysis to achieve the purpose of determining whether other system equipment associated with the target system equipment where a disaster occurs is available. Therefore, this method can improve the convenience of detecting the available status of the nuclear steam supply system function and reduce the consumption of human resources at the same time. In addition, since manual operations are avoided, the situation of human error in diagnosis that may exist in the manual detection process can be avoided, and the detection accuracy can be improved.

[0101] On the basis of the above embodiments, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, as Figure 4 shown, determining the target system equipment where a disaster occurs, determining the associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining the third function status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment includes:

[0102] Step 402: Based on the disaster detection information of each system equipment, determine the target system equipment where a disaster occurs and determine the first available status of the target system equipment.

[0103] Specifically, use a preset disaster detection device to obtain the disaster detection information of each system device, and determine the target system device where a disaster occurs based on the disaster detection information of each system device. For example, for a fire disaster in a nuclear power plant, the nuclear power plant fire detection system can be used to detect the fire and determine the target system device where the fire occurs. For the target system device where a fire occurs, determine its status information as unusable, that is, determine the first available status of the target system device.

[0104] Step 404: Determine the second available status of the associated system devices in the same fire compartment as the target system device through probabilistic safety analysis.

[0105] Among them, a fire compartment refers to a compartment divided for the actuators, pipelines, cables, and cabinets of the nuclear steam supply system, etc.; in the case of determining a fire, the system devices in the fire compartment can be divided into two categories: the target system device where the fire occurs and other system devices that are in the same fire compartment as the target system device but have not caught fire; therefore, after determining the first available status of the target system device, it is also necessary to determine the second available status of the associated system devices related to the target system device among other system devices.

[0106] In one embodiment, determining the second available status of the associated system devices in the same fire compartment as the target system device through probabilistic safety analysis includes:

[0107] Set the first available information for the associated system devices in the same sub-compartment as the target system device; where the sub-compartment is an area obtained by dividing the fire compartment according to a preset method;

[0108] Arrange and combine each sub-compartment, and calculate the safety probability of each permutation and combination related to the target system device according to the association relationship of the system devices in each sub-compartment;

[0109] Determine the second available information of the associated system devices in each sub-compartment according to the safety probability and the corresponding relationship between the system devices and the sub-compartment;

[0110] Determine the second available status of the associated system devices in the same fire compartment as the target system device according to the first available information and the second available information.

[0111] Specifically, for a fire compartment, multiple sub-compartments are obtained by dividing the fire compartment according to pre-set conditions. For example, the fire compartment can be divided according to the layout of gas trays or cables to obtain multiple areas, thereby determining multiple sub-compartments. If a fire occurs in a target system device, all other system devices in the same sub-compartment as the target system device are set to an unavailable state, that is, the first availability information of the associated system devices in the same sub-compartment as the target system device is determined to be unavailable. For the second availability information of each system device in other sub-compartments, the determination process is as follows: First, the multiple sub-compartments corresponding to the fire compartment are arranged and combined; each different arrangement and combination represents system devices with a certain relationship. The arrangements and combinations associated with the target system device are determined, and for each determined arrangement and combination, the corresponding core damage probability and large radioactive release frequency are calculated respectively, that is, the safety probability corresponding to each arrangement and combination is determined; the safety probability represents the safety evaluation value of the system devices associated with the target system device in the case where a fire occurs in the target system device. After the safety probabilities of each arrangement and combination are determined, according to the safety probabilities and the corresponding relationship between the system devices and the sub-compartments, the second availability information of each associated system device in each sub-compartment is determined. For example, assume that there are four sub-compartments A1 to A4 in fire compartment A. If the target system device is in sub-compartment A1, that is, the first availability state of the associated system devices in sub-compartment A1 is determined to be unavailable; then the safety probabilities corresponding to each arrangement and combination associated with sub-compartment A1 are determined, and according to the safety probabilities, the degree of influence of the disasters occurring in the target system device on the sub-compartments corresponding to each arrangement and combination is judged, and the arrangement and combination "A1 + A2" with a greater influence from the disasters occurring in the target system device is determined, that is, sub-compartment A2 affected by the target system device in each arrangement and combination is determined, and then according to the corresponding relationship between the sub-compartment and the system device, the system devices in sub-compartment A2 are determined to be in an unavailable state.

[0112] Step 406: Determine the third functional state information corresponding to the target nuclear steam supply system function according to the first availability state of the target system device and the second availability state of the associated system devices.

[0113] Specifically, after the first availability state of the target system device and the second availability state of the associated system devices are determined, according to the corresponding relationship between each system device and the target nuclear steam supply system function, the third functional state information of the target nuclear steam supply system function is determined. It can be understood that if the system devices corresponding to the target nuclear steam supply system function include the target system device and the target system device is unavailable, then the third functional state information of the target nuclear steam supply system function is determined to be unavailable; if the system devices corresponding to the target nuclear steam supply system function include the associated system device X and the associated system device X is unavailable, then the third functional state information of the target nuclear steam supply system function is determined to be unavailable.

[0114] That is to say, in this embodiment, the fire detection devices of the corresponding fire compartments are reasonably arranged to monitor the target system equipment where a fire occurs. For other system equipment in the same fire compartment that has not caught fire, a probabilistic safety analysis method is adopted for management. First, the system equipment in this fire compartment is divided into several small compartments according to the electrical panel or cable layout. After the fire compartment is divided into several small compartments, if a certain system equipment in a small compartment catches fire, it is considered that all the system equipment in this small compartment fails; for other small compartments M, according to the safety probability corresponding to the permutation and combination of the small compartment M and the small compartment that has caught fire, it is determined whether the system equipment in the other small compartment M will cause unacceptable consequences, and it is determined whether the corresponding mine-clearing combination belongs to the unusable small compartment combination. If so, it is determined that the system equipment in the small compartment M is unavailable, otherwise it is determined that the system equipment in the small compartment M is available.

[0115] It can be seen that in the manner of this embodiment, the convenience and accuracy of determining the third functional state information of the target nuclear steam supply system function can be improved.

[0116] Based on the above embodiment, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, the second operating state of the support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system is obtained, and the second functional state information of the target nuclear steam supply system function is determined, including:

[0117] Obtain the second operating state of the support system corresponding to the target nuclear steam supply system function;

[0118] According to the number, connection relationship, and second operating state of the support system, determine the second functional state information of the target nuclear steam supply system function.

[0119] Specifically, the support system corresponding to the target nuclear steam supply system function is determined, and the second operating state of the determined support system is obtained; the second operating state refers to the operating condition of the support system, such as whether a failure occurs and whether the support performance decreases; for example, for the cold source system, the second operating state includes whether a mechanical failure occurs in the cold source system and the performance state of the cooling capacity.

[0120] It should be noted that in actual operation, in order to ensure the stable and reliable operation of the nuclear steam supply system function, multiple identical support systems can be set to cooperate with each other to achieve system support for the nuclear steam supply system. Therefore, on the basis of obtaining the second operating state of the support system, it is necessary to further obtain the number and connection relationship of the support systems, and determine the second functional state information of the target nuclear steam supply system function according to the number, connection relationship, and second operating state of the support system.

[0121] In one embodiment, determining second functional status information of the target nuclear steam supply system function according to the number of support systems, the connection relationship, and the second operating status includes:

[0122] If the number of support systems is 1, when it is determined according to the second operating status that a support system has a fault, determine that the second functional status information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional status information of the target nuclear steam supply system function is available.

[0123] It should be noted that if the number of support systems is one, this support system is connected to the nuclear steam supply system to provide system support for the nuclear steam supply system. When it is determined according to the second operating status that a support system has a fault, it means that this support system has a fault and cannot provide system support for the nuclear steam supply system. Therefore, determine that the second functional status information of the target nuclear steam supply system function is unavailable; when it is determined according to the second operating status that the support system has no fault, determine that the second functional status information of the target nuclear steam supply system function is available.

[0124] In one embodiment, determining second functional status information of the target nuclear steam supply system function according to the number of support systems, the connection relationship, and the second operating status includes:

[0125] If the number of support systems is multiple, and the multiple support systems are connected to the nuclear steam supply system redundantly, when it is determined according to the second operating status of each support system that all the multiple support systems have faults, determine that the second functional status information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional status information of the target nuclear steam supply system function is available.

[0126] It should be noted that if the number of support systems is multiple, and the multiple support systems are connected to the nuclear steam supply system redundantly to provide system support for the nuclear steam supply system; if some of the multiple support systems have faults, other redundant support systems can still be used to continue to provide system support for the nuclear steam supply system; only when all the multiple support systems have faults does it mean that the support systems cannot provide system support for the nuclear steam supply system. Therefore, determine that the second functional status information of the target nuclear steam supply system function is unavailable. In other words, if any one of the multiple mutually redundant support systems has no fault, determine that the second functional status information of the target nuclear steam supply system function is available.

[0127] In a specific embodiment, for the cold source system of a nuclear power plant, the cold source systems are generally arranged separately, and the users corresponding to each cold source system are clear. Therefore, the consequences of the loss of one or all columns of the cold source are also clear. For example, the high-pressure letdown function of the chemical and volume control system consists of two identical sub-columns, and each sub-column is provided with a high-pressure letdown cooler, which is cooled by the cold sources of different columns respectively. Therefore, in the case of the loss of one column of the cold source, only the availability of one sub-column of the high-pressure letdown will be affected. Since there is a redundant other sub-column of the high-pressure letdown available, the function of the high-pressure letdown is still available; however, if the cold sources corresponding to both sub-columns of the high-pressure letdown are lost, then the high-pressure letdown function will not be available.

[0128] It can be seen that in the manner of this embodiment, the second functional state information of the target nuclear steam supply system function can be accurately determined.

[0129] Based on the above embodiment, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, if the support system is a cold source system, obtaining the second operating state of the support system corresponding to the target nuclear steam supply system function includes:

[0130] Obtaining the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, the outlet pressure of the cooling pump, the cooling medium temperature, and the cooling medium flow rate corresponding to the target nuclear steam supply system function.

[0131] This embodiment mainly explains the case where the support system is a cold source system. In actual operation, the loss of the cold source will, on the one hand, cause the system equipment in the nuclear steam supply system to lose cooling and be unable to operate for a long time, and on the other hand, cause the system equipment performing the heat rejection function to lose the heat rejection ability. In actual operation, by detecting the second operating state of the support system, when the second operating state indicating the loss of the cold source is not detected, it is determined that the corresponding target nuclear steam supply system function is available; when the second operating state indicating the loss of the cold source is detected, it is determined that the corresponding target nuclear steam supply system function is unavailable. Among them, there are two types of information indicating the loss of the cold source. One is the mechanical failure of the cold source system, and the other is the decrease in cooling capacity. Among them, by detecting the second operating states such as the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, and the outlet pressure of the cooling pump, it is judged whether there is a mechanical failure in the cold source system; by detecting the second operating states such as the cooling medium temperature and the cooling medium flow rate, it is judged whether there is a decrease in the cooling capacity of the cold source system.

[0132] In one of the embodiments, determining that the support system has a fault includes:

[0133] If the bearing temperature of the cooling pump is greater than the first temperature threshold, it is determined that the support system has a fault.

[0134] Specifically, by presetting a first temperature threshold, after obtaining the temperature of the cooling pump bearing, it is determined whether the obtained temperature of the cooling pump bearing is greater than the first temperature threshold. If it is greater, it is determined that there is a fault in the support system; otherwise, it is determined that there is no fault in the support system.

[0135] In one embodiment, determining that there is a fault in the support system includes:

[0136] If the temperature of the cooling pump motor winding is greater than a second temperature threshold, it is determined that there is a fault in the support system;

[0137] Specifically, by presetting a second temperature threshold, after obtaining the temperature of the cooling pump motor winding, it is determined whether the obtained temperature of the cooling pump motor winding is greater than the second temperature threshold. If it is greater, it is determined that there is a fault in the support system; otherwise, it is determined that there is no fault in the support system.

[0138] In one embodiment, determining that there is a fault in the support system includes:

[0139] If the inlet pressure of the cooling pump is less than a first pressure threshold, it is determined that there is a fault in the support system;

[0140] Specifically, by presetting a second pressure threshold, after obtaining the inlet pressure of the cooling pump, it is determined whether the obtained inlet pressure of the cooling pump is greater than the second pressure threshold. If it is less, it is determined that there is a fault in the support system; otherwise, it is determined that there is no fault in the support system.

[0141] In one embodiment, determining that there is a fault in the support system includes:

[0142] If the outlet pressure of the cooling pump is less than a second pressure threshold, it is determined that there is a fault in the support system;

[0143] Specifically, by presetting a second pressure threshold, after obtaining the inlet pressure of the cooling pump, it is determined whether the obtained inlet pressure of the cooling pump is less than the second pressure threshold. If it is less, it is determined that there is a fault in the support system; otherwise, it is determined that there is no fault in the support system.

[0144] In one embodiment, determining that there is a fault in the support system includes:

[0145] If the temperature of the cooling medium is greater than a third temperature threshold, it is determined that there is a fault in the support system;

[0146] Specifically, by presetting a third temperature threshold, after obtaining the temperature of the cooling medium, it is determined whether the obtained temperature of the cooling medium is greater than the third temperature threshold. If it is greater, it is determined that there is a fault in the support system; otherwise, it is determined that there is no fault in the support system.

[0147] In one embodiment, determining that there is a failure in the support system includes:

[0148] If the flow rate of the cooling medium is less than the first flow rate threshold, it is determined that there is a failure in the support system.

[0149] Specifically, by presetting the first flow rate threshold, after obtaining the flow rate of the cooling medium, it is determined whether the obtained flow rate of the cooling medium is greater than the first flow rate threshold. If it is less, it is determined that there is a failure in the support system; otherwise, it is determined that there is no failure in the support system.

[0150] Figure 5 It is a schematic diagram of a method for determining the loss of the cold source provided in one embodiment. As Figure 5 shown, if a mechanical failure or a decrease in cooling capacity of the cold source system is detected, it is determined that the cold source of the cold source system is lost; among them, the mechanical failure includes any one of the following situations: the bearing temperature of the cooling pump is greater than the first temperature threshold, the winding temperature of the cooling pump motor is greater than the second temperature threshold, the inlet pressure of the cooling pump is less than the first pressure threshold, the outlet pressure of the cooling pump is less than the second pressure threshold; the decrease in cooling capacity includes any one of the following situations: the temperature of the cooling medium is greater than the third temperature threshold, the flow rate of the cooling medium is less than the first flow rate threshold.

[0151] It can be seen that in the manner of this embodiment, it is possible to accurately and comprehensively detect whether there is a failure in the cold source system, thereby improving the accuracy and comprehensiveness of the determined second operating state.

[0152] On the basis of the above embodiment, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, the system equipment includes a signal acquisition device and an execution device; according to the first operating state of the system equipment in the nuclear steam supply system, the first function state information corresponding to the function of the target nuclear steam supply system is determined, including:

[0153] According to whether the signal value collected by the signal acquisition device exceeds the normal range and whether there are wiring or disconnection faults in the signal acquisition device, the first operating information of the signal acquisition device is determined;

[0154] According to whether there is a fault message in the execution device, the second operating information of the execution device is determined;

[0155] According to the first operating information and the second operating information, the first function state information corresponding to the function of the target nuclear steam supply system is determined.

[0156] Specifically, in this embodiment, the system equipment includes a signal acquisition device and an execution device; among them, the signal acquisition device is used to monitor the operating parameters of the nuclear steam supply system, and the execution device is used to perform operations to implement corresponding functions.

[0157] For a signal acquisition device, by obtaining the signal value acquired by the signal acquisition device and comparing the acquired signal value with the normal range, when the acquired signal value exceeds the normal range, it is determined that the output of the signal acquisition device is invalid, that is, the signal acquisition device is in an unavailable state, which means that the first operation information of the signal acquisition device is unavailable. Or, by detecting whether there are wiring or disconnection faults in the signal acquisition device, when a wiring or disconnection fault is detected in the signal acquisition device, it is determined that the signal acquisition device is in an unavailable state, which means that the first operation information of the signal acquisition device is unavailable.

[0158] In a specific implementation, by presetting a quality judge, information such as the signal value acquired by the signal acquisition device and whether there are wiring or disconnection faults is input into the quality judge, and the quality judge is used for logical judgment and outputs a corresponding judgment value; among them, when the judgment value is 1, it means that the signal acquisition device is unavailable, and when the judgment value is 0, it means that the signal acquisition device is available.

[0159] For an execution device, by monitoring the operation log generated during the operation of the execution device, it is determined whether there is fault information in the execution device according to the operation log. If no fault information of the execution device is detected, it means that the actuator is available, that is, the second operation information of the execution device is determined to be available; if fault information of the execution device is detected, it means that the execution device is unavailable, that is, the second operation information of the execution device is determined to be unavailable.

[0160] For example, if there are fault information such as a shutdown signal of the protection system, a switchboard fault, or a loss of power supply in a motor-type execution device, it means that the corresponding motor-type execution device is unavailable; otherwise, it is considered that the corresponding motor-type execution device is available; if there are fault information such as a switchboard fault or a loss of power supply in an electric switch valve-type execution device, it means that the corresponding electric switch valve-type execution device is unavailable; otherwise, it is considered that the corresponding electric switch valve-type execution device is available; if there are fault information such as a switchboard fault, a loss of power supply, a loss of control power supply, or the simultaneous presence of opening / closing instructions in an electric control valve-type execution device, it means that the corresponding electric control valve-type execution device is unavailable; otherwise, it is considered that the corresponding electric control valve-type execution device is available.

[0161] Specifically, after obtaining the first operation information of the signal acquisition device and the second operation information of the execution device, the first functional state information corresponding to the target nuclear steam supply system is determined according to the first operation information and the second operation information. Specifically, only when both the first operation information and the second operation information are available, it is determined that the first functional state information corresponding to the function of the target nuclear steam supply system is available; otherwise, it is determined that the first functional state information corresponding to the function of the target nuclear steam supply system is unavailable.

[0162] It can be seen that, according to the method of this embodiment, the accuracy of determining the first functional state information corresponding to the target nuclear steam supply system function can be improved.

[0163] Figure 6 The flowchart of another method for detecting the function of a nuclear steam supply system provided in this embodiment is shown as follows. Figure 6 As shown, on the basis of the above embodiment, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, the method further includes:

[0164] Step 602: Obtain the current state function parameters of the nuclear steam supply system, and determine the current degradation degree of the state function according to the current state function parameters.

[0165] Specifically, the current state function parameters of the nuclear steam supply system refer to the parameters corresponding to the current state function of the nuclear power plant, such as the parameters corresponding to subcriticality, primary coolant inventory, residual heat removal, steam generator inventory, steam generator integrity, containment integrity, reactivity, nuclear power, primary loop pressure, average primary loop temperature, primary loop boron concentration, etc. The current state function parameters of the nuclear steam supply system can be obtained by using the nuclear steam supply system function parameter measuring instruments preset in the nuclear power plant. For example, the reactor nuclear power can be measured by the power range detectors, intermediate range detectors, and source range detectors of the nuclear instrumentation system; the core neutron flux, core temperature, and pressure vessel water level can be measured by the self-powered neutron detectors and thermocouple detectors of the core measurement system respectively; the primary loop pressure can be measured by the reactor coolant system pressure measuring instruments arranged in the pressurizer and the safety injection system pressure measuring instruments arranged in the primary loop hot leg; the primary loop temperature can be measured by the narrow range temperature measuring instruments of the reactor coolant system arranged in the primary loop cold leg and hot leg and the wide range temperature measuring instruments of the safety injection system.

[0166] Specifically, for each state function, multiple degree comparison values are respectively set, and according to the comparison of the current state function parameters with the corresponding multiple degree comparison values, the current degradation degree corresponding to the current state function parameters is determined. For example, if the pressure vessel water level measurement system detects that the pressure vessel water level is lower than the top of the primary loop hot leg, it is determined that the primary coolant inventory is slightly degraded; if it is detected that the pressure vessel water level is lower than the bottom of the primary loop hot leg, it is determined that the primary coolant inventory is severely degraded.

[0167] Step 604: Determine the current accident handling strategy corresponding to the current degradation degree according to the preset corresponding relationship between the degradation degree and the accident handling strategy; the current accident handling strategy includes the current mitigation measures and the target safe shutdown state.

[0168] Specifically, a one-to-one correspondence is established in advance between the degradation degree of the status function and the accident handling strategy. Therefore, after determining the current degradation degree of the status function, according to the preset correspondence between the degradation degree and the accident handling strategy, the current accident handling strategy corresponding to the current degradation degree is determined. Moreover, each accident handling strategy includes mitigation measures corresponding to the degradation degree of the status function and the safe shutdown state; thus, the current mitigation measures and the target safe shutdown state can be determined according to the current accident handling strategy.

[0169] Step 606: Determine the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy.

[0170] It can be understood that after an accident occurs, there are certain differences between the current status function parameters of the nuclear steam supply system and the target status function parameters corresponding to the target safe shutdown state, and some current status function parameters may exceed the normal control range of the corresponding parameter type; in this case, corrective actions need to be taken to change the unit state of the nuclear steam supply system, so that one or more associated unit state parameters are restored to the target range and finally reach the corresponding target safe shutdown state. Specifically, after determining the current accident handling strategy, the current mitigation measures and the target safe shutdown state are determined according to the current accident handling strategy, then the parameter types of the nuclear steam supply system functions that need to be configured currently are screened out according to the current mitigation measures, and the target status function parameters of the nuclear steam supply system functions are determined according to the target safe shutdown state.

[0171] The method provided in this embodiment, by establishing the correspondence between the degradation degree and the accident handling strategy and determining the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy, therefore, by adjusting the target nuclear steam supply system according to the configuration parameters, the unit state can be accurately adjusted to ensure the safe and stable operation of the target nuclear steam supply system.

[0172] Such as Figure 7 A flow chart showing a process for determining the configuration parameters of the target nuclear steam supply system function is provided. In this embodiment, the configuration parameters of the target nuclear steam supply system function are determined by using the mitigation measures in the current accident handling strategy, including:

[0173] Determine the target status function parameters corresponding to the current status function parameters of the nuclear steam supply system;

[0174] Calculate the actual deviation value between the current status function parameters and the target status function parameters; the target status function parameters are of the same type as the current status function parameters;

[0175] Determine the configuration parameters of the target nuclear steam supply system function according to the actual deviation value and the preset allowable deviation range.

[0176] Specifically, in this embodiment, after obtaining the current state function parameters of the nuclear steam supply system, the target state function parameters corresponding to the parameter type are determined according to the parameter type of the current state function parameters; then, by calculating the difference between the current state function parameters and the target state function parameters, the actual deviation value between the current state function parameters and the target state function parameters is determined; the comparator is used to determine whether the actual deviation value is within the preset allowable deviation range; if so, it indicates that the configuration parameters of the target nuclear steam supply system function do not need to be adjusted currently, and the current state function parameters of the nuclear steam supply system are continuously monitored; if not, it indicates that the current state function parameters do not meet the corresponding target safe shutdown state, so the configuration parameters of the target nuclear steam supply system function are determined; the configuration parameters include the parameter type to be adjusted and the target state function parameters.

[0177] It should be noted that in the event of an accident in a nuclear power plant, whether a stable or withdrawal accident handling strategy is adopted, there is a definite value or range for the state parameters of the nuclear steam supply system function. When a stable accident handling strategy is adopted, if there are clear requirements for the state parameters of the nuclear steam supply system function for unit operation and safety, the target state function parameters of the nuclear steam supply system function are the preset values required for unit operation and safety; if there are no clear requirements for the state parameters of the nuclear steam supply system function for unit operation and safety, the target state function parameters of the nuclear steam supply system function are the current state function parameters of the unit. When a withdrawal accident handling strategy is adopted, the target state function parameters of the nuclear steam supply system function are the unit state function safety values.

[0178] Among them, the unit state function safety value should be a preset value considering the degradation degree of the unit state parameters and the available state of the nuclear steam supply system function. For example, when the unit state parameters are not degraded or slightly degraded and immediate withdrawal is required, the temperature target value for unit withdrawal can be set to 135 °C; when the unit state parameters are severely degraded and immediate withdrawal is required, the temperature target value for unit withdrawal can be set to 180 °C; at the same time, after reaching the above temperature withdrawal target value, if the residual heat removal system is available, the unit withdrawal target value can be set to 60 °C and continue to withdraw. In addition, the unit target state function parameters can also be set manually by the operator for the situation where immediate withdrawal is not required during an accident and withdrawal is required after exceeding the accident grace period, or for some accident mitigation treatment strategies that require the unit to operate upward.

[0179] It can be seen that in this embodiment, by further determining the configuration parameters of the target nuclear steam supply system function, not only can the configuration parameters be accurately and conveniently determined, but also it is convenient for the operator to adjust the unit state of the nuclear steam supply system according to the configuration parameters, which can ensure the safe and stable operation of the target nuclear steam supply system.

[0180] In one embodiment, the method further includes:

[0181] Determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degree of degradation.

[0182] Specifically, in actual operation, by setting the adjustment priorities of different configuration parameters, the configuration parameters are adjusted according to the adjustment priorities. In one embodiment, the adjustment priorities corresponding to different parameter types are preset. When multiple configuration parameters need to be adjusted, first determine the adjustment priorities of the configuration parameters according to the parameter types of the configuration parameters, and then adjust the configuration parameters in descending order of the adjustment priorities.

[0183] In this embodiment, further determine the adjustment priorities of the configuration parameters of the target nuclear steam supply system function according to the degree of degradation of the current state function parameters. More specifically, the higher the degree of degradation, the more serious the abnormal state represented by the current state function parameters. Therefore, the corresponding adjustment priority is higher, that is, the state parameters corresponding to the current state function parameters need to be adjusted in a timely manner. Therefore, in actual operation, for the degree of degradation of the parameter type corresponding to the target nuclear steam supply system function, set the corresponding adjustment priority, and the degree of degradation and the adjustment priority are in a positive correlation.

[0184] In one embodiment, determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degree of degradation includes:

[0185] If there is a target state function with the current degree of degradation being severe degradation, set the adjustment priority of the configuration parameters corresponding to the target state function to the highest priority;

[0186] If there is no state function with the current degree of degradation being severe degradation, determine the adjustment priorities of the configuration parameters corresponding to each state function according to the type of the state function.

[0187] Specifically, in this embodiment, after determining the degree of degradation of the current state function parameters, first determine whether there is a degree of degradation of severe degradation among the determined degrees of degradation; if so, determine the state parameters with the current degree of degradation being severe degradation as the target state function parameters, and set the adjustment priority of the configuration parameters corresponding to the target state function parameters to the highest priority; if not, the adjustment priorities of the configuration parameters corresponding to each state function can be directly determined according to the type of the state function.

[0188] That is to say, when there is no severely degraded state function, the corresponding adjustment priorities are set for each configuration parameter according to the preset priorities set based on the parameter type; when there is a target state function with severe degradation, regardless of the preset priorities set according to the parameter type, the adjustment priority of the target function state with severe degradation is directly set as the highest priority. For example, when setting the adjustment priority according to the parameter type, the adjustment priority of the state parameter for residual heat removal is higher than that of the state parameter for restoring the primary coolant inventory; when the primary coolant inventory is slightly degraded, the adjustment priority for residual heat removal is higher than that for restoring the primary coolant inventory; when the primary coolant inventory is severely degraded, the adjustment priority of the state parameter for restoring the primary coolant inventory is higher than that of the state parameter for residual heat removal.

[0189] In this embodiment, by determining the adjustment priorities of the configuration parameters of the target nuclear steam supply system function according to the degradation degree, the adjustment order of the configuration parameters can be determined according to the accident situation, so as to conveniently and orderly restore the target nuclear steam supply system function.

[0190] Based on the above embodiments, this embodiment further explains and optimizes the technical solution. Specifically, in this embodiment, the method further includes:

[0191] Displaying the configuration parameters, function states, and the third operating state corresponding to the target nuclear steam supply system function through a visual image.

[0192] In this embodiment, a monitoring and display device is used to display the configuration parameters, function states, and the third operating state corresponding to the target nuclear steam supply system function through a visual image. Among them, the third operating state of the target nuclear steam supply system function refers to the operating and shutdown information of the target nuclear steam supply system function, which includes continuous quantity information such as flow rate and pressure, and digital quantity information such as on, off, start, and stop.

[0193] Such as Figure 8 is a schematic diagram of a monitoring and display screen for a nuclear steam supply system function, Figure 9 is Figure 8 a partial enlarged view of a monitoring and display screen for a nuclear steam supply system function shown in the figure; such as Figure 8 and Figure 9As shown, in a specific embodiment, the availability information of the nuclear steam supply system function, i.e., the function status, is represented by the background color of the nuclear steam supply system function module. When the background color of the module is bright, it represents that the function status of the nuclear steam supply system is available; when the background color of the module is dark, it represents that the function status of the nuclear steam supply system is unavailable. Among them, the third operating status display module of the nuclear steam supply system function includes two modules: running and shutdown, and two indicator lights are used to represent the running and shutdown information. For example, when the green light is on and the red light is off, it represents that the nuclear steam supply system function is running; when the red light is on and the green light is off, it represents that the nuclear steam supply system function is shut down; when both the red light and the green light are on or off simultaneously, it is a fault state, and the user needs to combine other information to determine the specific operating status of the nuclear steam supply system function. The nuclear steam supply system configuration information module is outside the third operating status display module of the nuclear steam supply system function, and the red and green lights can also be used to represent the configuration information of the nuclear steam supply system function. When there is a running configuration requirement for the nuclear steam supply system function and the nuclear steam supply system function is not in the running state, the nuclear steam supply system function configuration information module is in a green flashing state; when there is a running configuration requirement for the nuclear steam supply system function and the nuclear steam supply system function is in the running state, the nuclear steam supply system function configuration module is in a green constant-on state. Similarly, when there is a shutdown configuration requirement for the nuclear steam supply system function and the nuclear steam supply system function is in the running state, the nuclear steam supply system function configuration information module is in a red flashing state; when there is a running configuration requirement for the nuclear steam supply system function and the nuclear steam supply system function is in the shutdown state, the nuclear steam supply system function configuration information module is in a red constant-on state. When the indicator lights of the nuclear steam supply system function configuration information module are all off, it means that there is no running configuration requirement for the nuclear steam supply system function at this time, and there is no need to change the configuration information of the nuclear steam supply system function; when the indicator lights of the nuclear steam supply system function configuration information module are all on, it represents that the nuclear steam supply system function is in a fault state, and at this time the user needs to combine the accident handling strategy and other information to determine the true configuration information of the nuclear steam supply system function.

[0194] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below in combination with actual application scenarios. The embodiment of the present invention provides another method for detecting the function of a nuclear steam supply system, and the specific steps are as follows:

[0195] Determine the first operating information of the signal acquisition device according to whether the signal value collected by the signal acquisition device exceeds the normal range and whether there are wiring or disconnection faults in the signal acquisition device;

[0196] Determine the second operating information of the execution device according to whether there is fault information in the execution device;

[0197] Determine the first functional status information corresponding to the target nuclear steam supply system function according to the first operation information and the second operation information.

[0198] Obtain the second operation status of the support system corresponding to the target nuclear steam supply system function;

[0199] If the number of support systems is 1, when it is determined that the support system has a fault according to the second operation status, determine that the second functional status information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional status information of the target nuclear steam supply system function is available;

[0200] If the number of support systems is multiple, and the multiple support systems are connected to the nuclear steam supply system redundantly, when it is determined that all the multiple support systems have faults according to the second operation status of each support system, determine that the second functional status information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional status information of the target nuclear steam supply system function is available;

[0201] If the support system is a cold source system, by obtaining the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, the outlet pressure of the cooling pump, the cooling medium temperature, and the cooling medium flow rate corresponding to the target nuclear steam supply system function, and determine that the support system has a fault according to the following method:

[0202] If the bearing temperature of the cooling pump is greater than the first temperature threshold, determine that the support system has a fault;

[0203] If the winding temperature of the cooling pump motor is greater than the second temperature threshold, determine that the support system has a fault;

[0204] If the inlet pressure of the cooling pump is less than the first pressure threshold, determine that the support system has a fault;

[0205] If the outlet pressure of the cooling pump is less than the second pressure threshold, determine that the support system has a fault;

[0206] If the cooling medium temperature is greater than the third temperature threshold, determine that the support system has a fault;

[0207] If the cooling medium flow rate is less than the first flow threshold, determine that the support system has a fault.

[0208] Based on the disaster detection information of each system device, determine the target system device where the disaster occurs, and determine the first available status of the target system device.

[0209] Set the first available information for the associated system devices in the same sub-zone as the target system device; where the sub-zone is an area obtained by dividing the fire prevention zone according to a preset method;

[0210] Arrange and combine each sub - partition, and calculate the safety probability of each permutation and combination associated with the target system device according to the association relationship of the system devices in each sub - partition;

[0211] According to the safety probability and the corresponding relationship between the system device and the sub - partition, determine the second available information of the associated system device in each sub - partition;

[0212] Determine the second available state of the associated system device in the same fire protection partition as the target system device according to the first available information and the second available information.

[0213] According to the first available state of the target system device and the second available state of the associated system device, determine the third function state information corresponding to the function of the target nuclear steam supply system.

[0214] Determine the function state of the function of the target nuclear steam supply system according to the first function state information, the second function state information and the third function state information;

[0215] Obtain the current state function parameters of the nuclear steam supply system, and determine the current degradation degree of the state function according to the current state function parameters;

[0216] According to the corresponding relationship between the preset degradation degree and the accident handling strategy, determine the current accident handling strategy corresponding to the current degradation degree; the current accident handling strategy includes the current mitigation measures and the target safe shutdown state;

[0217] Determine the target state function parameters corresponding to the current state function parameters of the nuclear steam supply system;

[0218] Calculate the actual deviation value between the current state function parameters and the target state function parameters; the target state function parameters are parameters of the same type as the current state function parameters;

[0219] According to the actual deviation value and the preset deviation allowable range, determine the configuration parameters of the target nuclear steam supply system function;

[0220] Determine the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation degree; if there is a target state function with a current degradation degree of severe degradation, set the adjustment priority of the configuration parameters corresponding to the target state function to the highest priority; if there is no state function with a current degradation degree of severe degradation, determine the adjustment priority of the configuration parameters corresponding to each state function according to the type of the state function.

[0221] The method for detecting the functions of a nuclear steam supply system provided in this embodiment determines the first function status information and the second function status information of the target nuclear steam supply system functions respectively according to the operating status of the system equipment and the operating status of the support system. After determining the target system equipment where a disaster has occurred, the associated system equipment affected by the disaster of the target system equipment is determined through probabilistic safety analysis, and the third function status information corresponding to the target nuclear steam supply system function is determined according to the target system equipment and the associated system equipment. According to the first function status information, the second function status information, and the third function status information, the function status of the target nuclear steam supply system function is determined. This method replaces the process of manually performing detection operations through probabilistic safety analysis to achieve the purpose of determining whether other system equipment associated with the target system equipment where a disaster has occurred is available. Therefore, this method can improve the convenience of detecting the available status of the nuclear steam supply system functions and reduce the consumption of human resources at the same time. In addition, since manual operations are avoided, the situation of human factor diagnosis errors that may exist in the manual detection process can be avoided, and the detection accuracy can be improved. Further, the configuration parameters of the target nuclear steam supply system function are determined, which can not only accurately and conveniently determine the configuration parameters, but also facilitate the operation personnel to adjust the unit status of the nuclear steam supply system according to the configuration parameters, and can ensure the safe and stable operation of the target nuclear steam supply system. By determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degree of degradation, the adjustment order of the configuration parameters can be determined according to the accident situation, and the function of the target nuclear steam supply system can be restored conveniently and orderly.

[0222] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown sequentially according to the arrows, these steps do not necessarily have to be executed in the order indicated by the arrows. Unless there is a clear description in this article, there is no strict order limit for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages do not necessarily have to be executed at the same time, but can be executed at different times. The execution order of these steps or stages does not necessarily have to be sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0223] Based on the same inventive concept, the embodiments of the present application also provide a nuclear steam supply system function detection device for implementing the nuclear steam supply system function detection method described above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the nuclear steam supply system function detection device provided below can refer to the limitations on the nuclear steam supply system function detection method in the above text, and will not be repeated here.

[0224] In one embodiment, as Figure 10 shown, a function detection device for a nuclear steam supply system is provided, including: a first determination module 1002, a second determination module 1004, a third determination module 1006, and a comprehensive determination module 1008, where:

[0225] The first determination module 1002 is configured to determine first function status information corresponding to a target nuclear steam supply system function according to a first operating status of system devices in the nuclear steam supply system;

[0226] The second determination module 1004 is configured to obtain a second operating status of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second function status information of the target nuclear steam supply system function;

[0227] The third determination module 1006 is configured to determine a target system device where a disaster occurs, determine associated system devices affected by the disaster of the target system device through probabilistic safety analysis, and determine third function status information corresponding to the target nuclear steam supply system function according to the target system device and the associated system devices;

[0228] The comprehensive determination module 1008 is configured to determine the function status of the target nuclear steam supply system function according to the first function status information, the second function status information, and the third function status information.

[0229] A function detection device for a nuclear steam supply system provided by an embodiment of the present invention has the same beneficial effects as the above-mentioned function detection method for a nuclear steam supply system.

[0230] In one of the embodiments, the third determination module includes:

[0231] A first determination sub-module, configured to determine a target system device where a disaster occurs according to the disaster detection information of each system device, and determine a first available status of the target system device;

[0232] A second determination sub-module, configured to determine a second available status of associated system devices in the same fire compartment as the target system device through probabilistic safety analysis;

[0233] A third determination sub-module, configured to determine third function status information corresponding to the target nuclear steam supply system function according to the first available status of the target system device and the second available status of the associated system devices.

[0234] In one of the embodiments, the second determination sub-module includes:

[0235] A first setting unit for setting first available information for associated system devices in the same sub - partition as the target system device; wherein, the sub - partition is an area obtained by dividing a fire protection partition according to a preset method.

[0236] A calculation unit for arranging and combining each sub - partition and calculating the safety probability of each permutation and combination associated with the target system device according to the association relationship of the system devices in each sub - partition.

[0237] A second setting unit for determining the second available information of the associated system devices in each sub - partition according to the safety probability and the corresponding relationship between the system devices and the sub - partitions.

[0238] A first determination unit for determining the second available state of the associated system devices in the same fire protection partition as the target system device according to the first available information and the second available information.

[0239] In one embodiment, the second determination module includes:

[0240] An acquisition sub - module for acquiring the second operating state of the support system corresponding to the function of the target nuclear steam supply system.

[0241] A fourth determination sub - module for determining the second functional state information of the function of the target nuclear steam supply system according to the number, connection relationship and second operating state of the support system.

[0242] In one embodiment, if the support system is a cold source system, the acquisition sub - module includes:

[0243] An acquisition unit for acquiring the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, the outlet pressure of the cooling pump, the cooling medium temperature and the cooling medium flow rate corresponding to the function of the target nuclear steam supply system.

[0244] In one embodiment, the fourth determination sub - module includes:

[0245] A first state determination unit for, if the number of support systems is 1, when it is determined according to the second operating state that the support system has a fault, determining that the second functional state information of the function of the target nuclear steam supply system is unavailable; otherwise, determining that the second functional state information of the function of the target nuclear steam supply system is available.

[0246] In one embodiment, the fourth determination sub - module includes:

[0247] A second status determination unit, configured to, if the number of support systems is multiple and the multiple support systems are connected to the nuclear steam supply system redundantly, when it is determined according to the second operating status of each support system that all the support systems have faults, determine that the second functional status information of the target nuclear steam supply system function is unavailable; otherwise, determine that the second functional status information of the target nuclear steam supply system function is available.

[0248] In one embodiment, the fourth determination sub-module includes:

[0249] A first fault determination sub-unit, configured to, if the temperature of the cooling pump bearing is greater than a first temperature threshold, determine that the support system has a fault.

[0250] In one embodiment, the fourth determination sub-module includes:

[0251] A second fault determination sub-unit, configured to, if the temperature of the motor winding of the cooling pump is greater than a second temperature threshold, determine that the support system has a fault.

[0252] In one embodiment, the fourth determination sub-module includes:

[0253] A third fault determination sub-unit, configured to, if the inlet pressure of the cooling pump is less than a first pressure threshold, determine that the support system has a fault.

[0254] In one embodiment, the fourth determination sub-module includes:

[0255] A fourth fault determination sub-unit, configured to, if the outlet pressure of the cooling pump is less than a second pressure threshold, determine that the support system has a fault.

[0256] In one embodiment, the fourth determination sub-module includes:

[0257] A fifth fault determination sub-unit, configured to, if the temperature of the cooling medium is greater than a third temperature threshold, determine that the support system has a fault.

[0258] In one embodiment, the fourth determination sub-module includes:

[0259] A sixth fault determination sub-unit, configured to, if the flow rate of the cooling medium is less than a first flow rate threshold, determine that the support system has a fault.

[0260] In one embodiment, the system device includes a signal acquisition device and an execution device; the first determination module includes:

[0261] A first information determination sub-module, configured to determine the first operating information of the signal acquisition device according to whether the signal input information of the signal acquisition device exceeds the normal range and whether the signal acquisition device has wiring or disconnection faults.

[0262] A second information determination sub-module, configured to determine the second operation information of the execution device according to whether there is fault information of the execution device;

[0263] A status information determination sub-module, configured to determine the first function status information corresponding to the target nuclear steam supply system function according to the first operation information and the second operation information.

[0264] In one embodiment, a nuclear steam supply system function detection device further includes:

[0265] A degradation degree determination module, configured to obtain the current state function parameters of the nuclear steam supply system, and determine the current degradation degree of the state function according to the current state function parameters;

[0266] A strategy determination module, configured to determine the current accident handling strategy corresponding to the current degradation degree according to the corresponding relationship between the preset degradation degree and the accident handling strategy; the current accident handling strategy includes the current mitigation measures and the target safe shutdown state;

[0267] A configuration parameter determination module, configured to determine the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy.

[0268] In one embodiment, a nuclear steam supply system function detection device further includes:

[0269] A priority determination module, configured to determine the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation degree.

[0270] The priority determination module includes:

[0271] A first priority determination sub-module, configured to, if there is a target state function with the current degradation degree being severe degradation, set the adjustment priority of the configuration parameters corresponding to the target state function to the highest priority.

[0272] In one embodiment, the priority determination module includes:

[0273] A second priority determination sub-module, configured to, if there is no state function with the current degradation degree being severe degradation, determine the adjustment priority of the configuration parameters corresponding to each state function according to the type of the state function.

[0274] In one embodiment, the configuration parameter determination module includes:

[0275] A first parameter determination sub-module, configured to determine the target state function parameters corresponding to the current state function parameters of the nuclear steam supply system;

[0276] A deviation value determination sub-module, configured to calculate an actual deviation value between a current state function parameter and a target state function parameter; the target state function parameter is a parameter of the same type as the current state function parameter;

[0277] A second parameter determination sub-module, configured to determine configuration parameters of a target nuclear steam supply system function according to the actual deviation value and a preset allowable deviation range.

[0278] In one embodiment, in one embodiment, a nuclear steam supply system function detection device further includes:

[0279] A display module, configured to display the configuration parameters, function status, and a third operating state corresponding to the target nuclear steam supply system function through a visualization image.

[0280] Each module in the above nuclear steam supply system function detection device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in or independent of a processor in a computer device in the form of hardware, or stored in a memory in the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above respective modules.

[0281] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as Figure 11 shown. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. The computer program, when executed by the processor, implements a nuclear steam supply system function detection method. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, a touchpad, or a mouse, etc.

[0282] Those skilled in the art can understand that Figure 11 the structure shown in is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have a different component layout.

[0283] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the following steps are implemented:

[0284] Determine first functional status information corresponding to a target nuclear steam supply system function according to a first operating state of system devices in a nuclear steam supply system;

[0285] Obtain a second operating state of a support system corresponding to a target nuclear steam supply system function in the nuclear steam supply system, and determine second functional status information of the target nuclear steam supply system function;

[0286] Determine target system devices where a disaster occurs, determine associated system devices affected by the disaster of the target system devices through probabilistic safety analysis, and determine third functional status information corresponding to the target nuclear steam supply system function according to the target system devices and the associated system devices;

[0287] Determine the functional status of the target nuclear steam supply system function according to the first functional status information, the second functional status information, and the third functional status information.

[0288] A computer device provided by an embodiment of the present invention has the same beneficial effects as the above-mentioned method for detecting the function of a nuclear steam supply system.

[0289] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0290] Determine first functional status information corresponding to a target nuclear steam supply system function according to a first operating state of system devices in a nuclear steam supply system;

[0291] Obtain a second operating state of a support system corresponding to a target nuclear steam supply system function in the nuclear steam supply system, and determine second functional status information of the target nuclear steam supply system function;

[0292] Determine target system devices where a disaster occurs, determine associated system devices affected by the disaster of the target system devices through probabilistic safety analysis, and determine third functional status information corresponding to the target nuclear steam supply system function according to the target system devices and the associated system devices;

[0293] Determine the functional status of the target nuclear steam supply system function according to the first functional status information, the second functional status information, and the third functional status information.

[0294] A computer-readable storage medium provided by an embodiment of the present invention has the same beneficial effects as the above-mentioned method for detecting the functions of a nuclear steam supply system.

[0295] In one embodiment, a computer program product is provided, including a computer program, which when executed by a processor, implements the following steps:

[0296] Determine first function status information corresponding to a target nuclear steam supply system function according to the first operating status of system devices in the nuclear steam supply system;

[0297] Obtain the second operating status of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second function status information of the target nuclear steam supply system function;

[0298] Determine target system devices where a disaster occurs, determine associated system devices affected by the disaster of the target system devices through probabilistic safety analysis, and determine third function status information corresponding to the target nuclear steam supply system function according to the target system devices and the associated system devices;

[0299] Determine the function status of the target nuclear steam supply system function according to the first function status information, the second function status information, and the third function status information.

[0300] A computer program product provided by an embodiment of the present invention has the same beneficial effects as the above-mentioned method for detecting the functions of a nuclear steam supply system.

[0301] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data that have been authorized by the user or fully authorized by all parties.

[0302] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0303] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0304] The above-described embodiments merely represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for detecting the functions of a nuclear steam supply system, characterized in that The method includes: Determining first functional status information corresponding to a target nuclear steam supply system function according to a first operating status of system equipment in a nuclear steam supply system; the first functional status information is used to characterize the functional status information of the system equipment; Obtaining a second operating status of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determining second functional status information of the target nuclear steam supply system function; the second functional status information is used to characterize the functional status information of the support system; Determining target system equipment where a disaster occurs, determining associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining third functional status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment; the third functional status information is used to characterize the functional status information of the target nuclear steam supply system function under the influence of the disaster; Determining the functional status of the target nuclear steam supply system function according to the first functional status information, the second functional status information, and the third functional status information.

2. The method according to claim 1, wherein The determining the target system equipment where a disaster occurs, determining the associated system equipment affected by the disaster of the target system equipment through probabilistic safety analysis, and determining the third functional status information corresponding to the target nuclear steam supply system function according to the target system equipment and the associated system equipment includes: Determining the target system equipment where a disaster occurs based on the disaster detection information of each system equipment, and determining a first available status of the target system equipment; Determining a second available status of associated system equipment in the same fire protection zone as the target system equipment through probabilistic safety analysis; Determining third functional status information corresponding to the target nuclear steam supply system function according to the first available status of the target system equipment and the second available status of the associated system equipment.

3. The method according to claim 2, characterized in that, The determining the second available status of the associated system equipment in the same fire protection zone as the target system equipment through probabilistic safety analysis includes: Setting first available information for the associated system equipment in the same sub-zone as the target system equipment; wherein, the sub-zone is an area obtained by dividing the fire protection zone according to a preset method; Arranging and combining each sub-zone, and calculating the safety probability of each permutation and combination associated with the target system equipment according to the association relationship of the system equipment in each sub-zone; Determining second available information of the associated system equipment in each sub-zone according to the safety probability and the corresponding relationship between the system equipment and the sub-zone; Determining the second available status of the associated system equipment in the same fire protection zone as the target system equipment according to the first available information and the second available information.

4. The method according to claim 1, characterized in that, The obtaining the second operating status of the support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determining the second functional status information of the target nuclear steam supply system function includes: Obtain the second operating state of the support system corresponding to the function of the target nuclear steam supply system; Determine the second function state information of the function of the target nuclear steam supply system according to the number, connection relationship of the support system, and the second operating state.

5. The method according to claim 4, characterized in that, If the support system is a cold source system, the obtaining the second operating state of the support system corresponding to the function of the target nuclear steam supply system includes: Obtain the bearing temperature of the cooling pump, the winding temperature of the cooling pump motor, the inlet pressure of the cooling pump, the outlet pressure of the cooling pump, the cooling medium temperature, and the cooling medium flow rate corresponding to the function of the target nuclear steam supply system.

6. The method according to claim 5, wherein The determining the second function state information of the function of the target nuclear steam supply system according to the number, connection relationship of the support system, and the second operating state includes: If the number of the support systems is 1, when it is determined according to the second operating state that the support system has a fault, determine that the second function state information of the function of the target nuclear steam supply system is unavailable; otherwise, determine that the second function state information of the function of the target nuclear steam supply system is available; If the number of the support systems is multiple, and the multiple support systems are connected to the nuclear steam supply system redundantly, when it is determined according to the second operating state of each support system that all the support systems have faults, determine that the second function state information of the function of the target nuclear steam supply system is unavailable; otherwise, determine that the second function state information of the function of the target nuclear steam supply system is available.

7. The method according to claim 6, wherein Including any one of the following: If the bearing temperature of the cooling pump is greater than the first temperature threshold, determine that the support system has a fault; If the winding temperature of the cooling pump motor is greater than the second temperature threshold, determine that the support system has a fault; If the inlet pressure of the cooling pump is less than the first pressure threshold, determine that the support system has a fault; If the outlet pressure of the cooling pump is less than the second pressure threshold, determine that the support system has a fault; If the cooling medium temperature is greater than the third temperature threshold, determine that the support system has a fault; If the cooling medium flow rate is less than the first flow threshold, determine that the support system has a fault.

8. The method according to claim 1, characterized in that, The system device includes a signal acquisition device and an execution device; the determining the first function state information corresponding to the function of the target nuclear steam supply system according to the first operating state of the system device in the nuclear steam supply system includes: Determine the first operating information of the signal acquisition device according to whether the signal input information of the signal acquisition device exceeds the normal range and whether there are wiring and disconnection faults in the signal acquisition device; Determine the second operating information of the execution device according to whether there is a fault message in the execution device; Determine the first function state information corresponding to the function of the target nuclear steam supply system according to the first operating information and the second operating information.

9. The method according to any one of claims 1 to 8, characterized in that The method further includes: Obtain the current state function parameters of the nuclear steam supply system, and determine the current degradation degree of the state function according to the current state function parameters; Determine the current accident handling strategy corresponding to the current degradation level according to the correspondence between the preset degradation levels and accident handling strategies; the current accident handling strategy includes current mitigation measures and a target safe shutdown state; Determine the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy.

10. The method according to claim 9, wherein The method further includes: Determine the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation level.

11. The method according to claim 10, characterized in that, The determining the adjustment priority of the configuration parameters of the target nuclear steam supply system function according to the degradation level includes: If there is a target state function with the current degradation level being severe degradation, set the adjustment priority of the configuration parameters corresponding to the target state function to the highest priority; If there is no state function with the current degradation level being severe degradation, determine the adjustment priority of the configuration parameters corresponding to each state function according to the type of the state function.

12. The method according to claim 9, wherein The determining the configuration parameters of the target nuclear steam supply system function by using the current accident handling strategy includes: Determine the target state function parameters corresponding to the current state function parameters of the nuclear steam supply system; Calculate the actual deviation value between the current state function parameters and the target state function parameters; the target state function parameters are parameters of the same type as the current state function parameters; Determine the configuration parameters of the target nuclear steam supply system function according to the actual deviation value and the preset deviation allowable range.

13. The method according to claim 12, wherein The method further includes: Display the configuration parameters, the function state, and the third operating state corresponding to the target nuclear steam supply system function through a visual image.

14. A functional detection device for a nuclear steam supply system, characterized in that, The device includes: A first determination module, configured to determine first function state information corresponding to a target nuclear steam supply system function according to the first operating state of system devices in the nuclear steam supply system; the first function state information is used to characterize the function state information of the system devices; A second determination module, configured to obtain the second operating state of a support system corresponding to the target nuclear steam supply system function in the nuclear steam supply system, and determine second function state information of the target nuclear steam supply system function; the second function state information is used to characterize the function state information of the support system; A third determination module, configured to determine a target system device where a disaster occurs, determine associated system devices affected by the disaster of the target system device through probabilistic safety analysis, and determine third function state information corresponding to the target nuclear steam supply system function according to the target system device and the associated system devices; the third function state information is used to characterize the function state information of the target nuclear steam supply system function under the influence of the disaster; A comprehensive determination module, configured to determine the function state of the target nuclear steam supply system function according to the first function state information, the second function state information, and the third function state information.

15. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 13.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13.

17. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 13.

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