Nuclear power station chemical parameter monitoring method, device, equipment and storage medium

Abstract

The invention discloses a nuclear power station chemical parameter monitoring method, a nuclear power station chemical parameter monitoring device, nuclear power station chemical parameter monitoring equipment and a storage medium. Obtaining attribute evaluation parameters capable of representing the influence degree and the potential safety hazard degree of the type of the to-be-monitored chemical parameter on the safe operation of the nuclear power station, and obtaining operation evaluation parameters capable of representing the real-time operation condition and the historical operation condition of the to-be-monitored chemical parameter; determining a monitoring result according to a preset relationship between the attribute evaluation parameter and the operation evaluation parameter; under the condition that the monitoring result of the to-be-monitored chemical parameter meets the preset monitoring condition, key factors corresponding to the to-be-monitored chemical parameter are inquired, and the key factors are sent to the front end. The monitoring result is more objective and comprehensive, so that key factors provided for the front end according to the monitoring result are more accurate, and front-end self-inspection is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power plant assessment, and more specifically, to a method, device, equipment and storage medium for monitoring chemical parameters of a nuclear power plant. Background Art

[0002] The operation of nuclear power plants involves complex chemical reactions and physical processes, among which chemical parameters such as the quality of cooling water and the concentration of chemical substances in the reactor are crucial to the stable and safe operation of nuclear power plants. For all nuclear power plants currently in operation around the world, chemical parameters are regularly evaluated by external organizations to monitor the safe operation of nuclear power plants worldwide.

[0003] At present, the assessment and monitoring of chemical parameters in nuclear power plants are generally carried out by assessors based on their personal experience. They assess the real-time status and trend of chemical parameters in nuclear power plants. This not only takes a lot of time, manpower and material resources, but also the assessment results are relatively subjective, and the objectivity and accuracy of the assessment cannot be ensured. Summary of the invention

[0004] In view of the above problems, the present application provides a nuclear power plant chemical parameter monitoring method, device, equipment and storage medium to achieve the purpose of objectively and accurately monitoring and evaluating the chemical parameters of nuclear power plants. The specific scheme is as follows:

[0005] The first aspect of the present application provides a method for monitoring chemical parameters of a nuclear power plant, comprising:

[0006] Obtaining a monitoring value of a chemical parameter to be monitored, wherein the monitoring value is a parameter value monitored corresponding to a current parameter monitoring period;

[0007] When it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, obtaining an evaluation parameter set of the chemical parameter to be monitored, the evaluation parameter set including: attribute evaluation parameters and operation evaluation parameters, the attribute evaluation parameters including: the importance weight of the influence of the preset type of chemical parameter to be monitored on the operation of the nuclear power plant, and the preset risk level of the type of chemical parameter to be monitored, the operation evaluation parameters including: the degree value of the monitoring value exceeding the safety threshold, and the number of monitoring values ​​greater than the safety threshold among all the monitoring values ​​corresponding to the parameter monitoring cycles before the current moment;

[0008] Determining a monitoring result corresponding to the monitoring value according to a preset relationship between the attribute evaluation parameter and the operation evaluation parameter;

[0009] When the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, the key factor corresponding to the chemical parameter to be monitored is queried and the key factor is sent to the front end. The key factor is the factor that causes the monitoring value of the chemical parameter to be monitored to exceed the safety threshold.

[0010] In a possible implementation, determining the monitoring result corresponding to the monitoring value according to the preset relationship between the attribute evaluation parameter and the operation evaluation parameter includes:

[0011] The product of the importance weight, the risk level, the degree value and the number is determined as the monitoring result corresponding to the monitoring value.

[0012] In a possible implementation, the preset monitoring condition includes: the monitoring result of the chemical parameter to be monitored is greater than a preset monitoring threshold, or the sum of the monitoring result of the chemical parameter to be monitored and the monitoring results of other chemical parameters to be monitored is greater than the preset monitoring threshold.

[0013] In a possible implementation, the method further includes:

[0014] In the case where the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, the chemical parameter to be monitored is determined as a parameter item to be improved, and the parameter item to be improved is sent to the front end.

[0015] In a possible implementation, the method further includes:

[0016] When it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, early warning information indicating that there is a safety risk in the chemical parameter to be monitored is sent to the front end.

[0017] In one possible implementation, the process of presetting the importance weight of the influence degree of the type of chemical parameter to be monitored on the operation of the nuclear power plant includes:

[0018] Obtain historical data corresponding to each chemical parameter to be monitored in the nuclear power plant;

[0019] Analyze the historical data corresponding to each of the chemical parameters to be monitored to determine the degree of influence of each of the chemical parameters to be monitored on the safe operation of the nuclear power plant;

[0020] According to the degree of influence, a weight is assigned to each of the chemical parameters to be monitored, and the weight is used as an importance weight.

[0021] In a possible implementation, the process of presetting the risk level of the type of chemical parameter to be monitored includes:

[0022] Obtain the key factors corresponding to each chemical parameter to be monitored, as well as the historical operation data and historical safety monitoring results of the nuclear power plant;

[0023] Analyzing the influence of the key factors corresponding to each of the chemical parameters to be monitored on the safe operation of the nuclear power plant based on the historical operation data and the historical safety monitoring results of the nuclear power plant as the safety influence of each of the chemical parameters to be monitored;

[0024] According to the safety impact degree of each of the chemical parameters to be monitored, a preset number of risk levels are divided, and each of the risk levels corresponds to at least one of the chemical parameters to be monitored.

[0025] The second aspect of the present application provides a nuclear power plant chemical parameter monitoring device, comprising:

[0026] A parameter acquisition unit, used to acquire a monitoring value of a chemical parameter to be monitored, wherein the monitoring value is a parameter value monitored corresponding to a current parameter monitoring period;

[0027] An evaluation parameter acquisition unit is used to acquire an evaluation parameter set of the chemical parameter to be monitored when it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, the evaluation parameter set including: attribute evaluation parameters and operation evaluation parameters, the attribute evaluation parameters including: the importance weight of the influence of the preset type of chemical parameter to be monitored on the operation of the nuclear power plant, and the preset risk level of the type of chemical parameter to be monitored, the operation evaluation parameters including: the degree value of the monitoring value exceeding the safety threshold, and the number of monitoring values ​​greater than the safety threshold among all the monitoring values ​​corresponding to the parameter monitoring cycles before the current moment;

[0028] A result confirmation unit, used to determine the monitoring result corresponding to the monitoring value according to the preset relationship between the attribute evaluation parameter and the operation evaluation parameter;

[0029] The result feedback unit is used to query the key factors corresponding to the chemical parameters to be monitored when the monitoring results of the chemical parameters to be monitored meet the preset monitoring conditions, and send the key factors to the front end. The key factors are the factors that cause the monitoring values ​​of the chemical parameters to be monitored to exceed the safety threshold.

[0030] The third aspect of the present application provides a nuclear power plant chemical parameter monitoring device, comprising at least one processor and a memory connected to the processor, wherein:

[0031] The memory is used to store computer programs;

[0032] The processor is used to execute the computer program so that the nuclear power plant chemical parameter monitoring device can implement any one of the nuclear power plant chemical parameter monitoring methods.

[0033] The fourth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by a nuclear power plant chemical parameter monitoring device, the nuclear power plant chemical parameter monitoring device can implement each step of any one of the above-mentioned nuclear power plant chemical parameter monitoring methods.

[0034] It can be seen from the above technical scheme that the nuclear power plant chemical parameter evaluation method provided by the embodiment of the present application, when the monitoring value of the chemical parameter to be monitored is greater than the safety threshold, obtains the attribute evaluation parameters that can characterize the degree of influence of the type of chemical parameter to be monitored on the safe operation of the nuclear power plant and the degree of safety hazards, including importance parameters and risk levels, and obtains operation evaluation parameters that can characterize the real-time operation status and historical operation status of the chemical parameter to be monitored, including the degree value of the monitoring value exceeding the safety threshold and the number of monitoring values ​​greater than the safety threshold in all parameter monitoring cycles before the current moment. According to the relationship between the pre-set attribute evaluation parameters and the operation evaluation parameters, the monitoring results corresponding to the monitoring values ​​are determined based on the comprehensive operation status and the degree of influence. Compared with the prior art, the monitoring results of the present application are more objective and comprehensive, so that the key factors provided to the front end based on the monitoring results are more accurate, which is convenient for front-end self-inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of a process for realizing a method for monitoring chemical parameters of a nuclear power plant provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a nuclear power plant chemical parameter monitoring device provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the structure of a nuclear power plant chemical parameter monitoring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The current monitoring mode of chemical parameters of nuclear power plants requires that during the assessment period of a specific nuclear power plant, the monitors of each nuclear power plant monitor and evaluate the chemical parameters in the station based on their personal monitoring experience to determine the operating status of the nuclear power plant in the chemical field, nuclear safety status, etc. However, the personal monitoring experience of the monitor is subjective, which may lead to different evaluation results for each monitor, and it is impossible to obtain consistent and accurate evaluation results. In addition, since the monitoring time span of a nuclear power plant is relatively large, usually 2-4 years, it is impossible to track and analyze the trends inside and outside the nuclear power plant in real time, resulting in the inability of station personnel to grasp the chemical parameter status of the nuclear power plant in a timely manner, and thus unable to make timely adjustments to the operating status of the nuclear power plant. On the one hand, it affects the safety and stability of the nuclear power plant's own operation, and on the other hand, it causes the nuclear power plant to fail to meet the requirements during the assessment period.

[0041] To solve the above problems, the present application provides a method for monitoring chemical parameters of a nuclear power plant. The method can be applied to the central control system of a nuclear power plant to monitor and evaluate the chemical parameters of the nuclear power plant. Figure 1 , a flow chart of a method for monitoring chemical parameters of a nuclear power plant provided in an embodiment of the present application is provided, and the implementation process of the method for monitoring chemical parameters of a nuclear power plant is described, and the process includes the following steps:

[0042] Step S110, obtaining the monitoring value of the chemical parameter to be monitored.

[0043] The monitoring values ​​can be collected in real time through sensors deployed in various locations in the nuclear power plant to monitor the values ​​of various chemical parameters in the station. The monitoring values ​​are the parameter values ​​monitored corresponding to the current parameter monitoring period, and the parameter monitoring period can be pre-set by the station personnel. For example, the parameter monitoring period is set to 24 hours or three days, etc., and no special value is limited here.

[0044] The chemical parameters to be monitored can also be set by the station personnel. Usually, the nuclear power plant / nuclear power plant involves chemical parameters in the selected control area, such as chemical parameters in the loop coolant system and auxiliary system, oil parameters of emergency diesel engines, related parameters of cooling water, etc. The station personnel can set all chemical parameters as chemical parameters to be monitored, or set one or several chemical parameters as chemical parameters to be monitored according to the operation of the nuclear power plant.

[0045] Step S120, detecting whether the monitored value is greater than the safety threshold corresponding to the chemical parameter to be monitored; if yes, executing step S130, if not, returning to step S110.

[0046] It is understandable that the purpose of safety monitoring is to monitor chemical parameters that do not meet the requirements for targeted evaluation. Therefore, the embodiment of the present application uses the monitoring value greater than the safety threshold corresponding to the chemical parameter to be monitored as the trigger condition for evaluation. When the trigger condition is met, step S130 is executed to further evaluate the unsafe chemical parameter; when the trigger condition is not met, the process returns to step S110 to continue collecting the monitoring value of the chemical parameter to be monitored. The safety threshold corresponding to the chemical parameter to be monitored can be set by the station personnel, for example, according to the safety standards specified by the World Association of Nuclear Operators (WANO).

[0047] Optionally, the normal operating range, historical maximum deviation (HMD) and abnormal trend of each chemical parameter to be monitored can be determined by analyzing the historical data of each chemical parameter to be monitored. Based on these data characteristics, typical data of the chemical parameter to be monitored can be comprehensively determined as a safety threshold.

[0048] In one possible implementation, when it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, early warning information indicating that there is a safety risk in the chemical parameter to be monitored is sent to the front end so that the personnel in the station can perceive the abnormal parameter situation in time and take corrective actions.

[0049] Step S130, obtaining an evaluation parameter set of the chemical parameter to be monitored, the evaluation parameter set including: property evaluation parameters and operation evaluation parameters.

[0050] The attribute evaluation parameters include: the importance weight of the impact of the preset chemical parameter type to be monitored on the operation of the nuclear power plant, and the risk level of the preset chemical parameter type to be monitored. The operation evaluation parameters include: the degree to which the monitoring value exceeds the safety threshold, and the number of monitoring values ​​greater than the safety threshold in all parameter monitoring cycles before the current moment.

[0051] Among them, the attribute evaluation parameter is used to characterize the degree of influence of the parameter attribute of the chemical parameter to be monitored on the safe operation of the nuclear power plant. In the embodiment of the present application, the degree of influence can be divided into two aspects. On the one hand, it is the importance of the chemical parameter in the nuclear reactor of the nuclear power plant. On the other hand, if the monitoring value of the chemical parameter exceeds the safety threshold, the safety problem caused by the monitoring value exceeds the safety threshold. The degree of influence on the nuclear safety of the nuclear power plant. Therefore, the embodiment of the present application combines the attribute evaluation parameters to monitor and evaluate the state of the chemical parameters, and comprehensively analyzes the influence of the chemical parameters on the overall safety and stable operation of the nuclear power plant from a macro perspective.

[0052] The operation evaluation parameters are used to characterize the parameter status of the chemical parameter to be monitored under the current operating environment. The parameter status can still be divided into two aspects. On the one hand, the degree to which the parameter exceeds the safety threshold in the current parameter monitoring cycle is used to represent the current parameter status. On the other hand, it is to count whether there is any situation that exceeds the safety threshold in all parameter monitoring cycles before the current moment, and if so, to count the cumulative number of times exceeded, so as to represent the current cumulative parameter status that does not meet the standard. Because when the situation of chemical parameters not meeting the standard continues to accumulate, the degree of impact caused by it is also continuously accumulated. Based on this, the data trend and stability of the chemical parameters to be monitored can also be comprehensively evaluated.

[0053] Specifically, the parameter values ​​in the attribute evaluation parameters can be integrated with the experience of all assessors to determine a unified value. Optionally, the historical data of the chemical parameters of the nuclear power plant can also be analyzed to determine the attribute evaluation parameters of each chemical parameter to be monitored based on the objective facts expressed by the historical data.

[0054] In one possible implementation, the process of presetting the importance weights of the degree of influence of the types of chemical parameters to be monitored on the operation of the nuclear power plant may include: obtaining historical data corresponding to each chemical parameter to be monitored in the nuclear power plant; analyzing the historical data corresponding to each chemical parameter to be monitored to determine the degree of influence of each chemical parameter to be monitored on the safe operation of the nuclear power plant; and assigning a weight to each chemical parameter to be monitored based on the degree of influence, and the weight serves as the importance weight.

[0055] First, all chemical parameters to be monitored are determined. According to the role of the chemical parameters to be monitored in the nuclear reactor in historical data, the degree of influence of each chemical parameter to be monitored on nuclear safety, or the importance of the chemical parameter to be monitored in maintaining the normal operation of the nuclear reactor, is determined. According to the degree of influence or importance, a weight value is assigned to each chemical parameter to be monitored as the importance weight of the chemical parameter to be monitored. The larger the weight value, the higher the degree of influence of the chemical parameter to be monitored on the nuclear safety of the nuclear power plant.

[0056] For example, by analyzing the historical data of the chemical parameters to be monitored, it can be seen that the key components in the primary coolant system are directly involved in the cooling and heat exchange process of the nuclear reactor, and play a vital role in maintaining the thermal balance and safe operation of the nuclear reactor. The solubility and stability of these substances directly affect the cooling efficiency and safety performance of the nuclear reactor. Others, such as the chemical parameters in the nuclear auxiliary system, are related to the operating conditions of the auxiliary equipment of the nuclear power plant, and are of irreplaceable importance for the stable operation of the nuclear reactor under various operating conditions; the parameters in the secondary loop system are directly related to the treatment and recycling of recycled water, and play an important role in the long-term operation of the nuclear reactor and the protection of facilities and equipment. The above parameters are directly related to the safe and stable operation of the nuclear reactor, so they can be assigned a larger weight ratio, for example, 80% of the weight is assigned to each.

[0057] Secondly, for chemical parameters that do not directly affect the safety of nuclear reactors but still play a key role in the operation of nuclear power plant backup safety systems and equipment in emergency situations, such as oil parameters of emergency diesel engines and related parameters of cooling water, a weight of 15% can be allocated.

[0058] In addition, a weight of 5% can be allocated to chemical parameters that do not directly affect the safety of nuclear reactors but have a certain impact on the operation and facility management of nuclear power plants.

[0059] It should be noted that in the embodiments of the present application, it is not limited to normalizing the importance weights of all chemical parameters to be monitored.

[0060] In one possible implementation, the process of presetting the risk level of the type of chemical parameter to be monitored includes: obtaining the key factors corresponding to each chemical parameter to be monitored, as well as the historical operating data and historical safety monitoring results of the nuclear power plant; analyzing the degree of influence of the key factors corresponding to each chemical parameter to be monitored on the safe operation of the nuclear power plant based on the historical operating data and historical safety monitoring results of the nuclear power plant, as the safety influence degree of each chemical parameter to be monitored; and dividing a preset number of risk levels according to the safety influence degree of each chemical parameter to be monitored, each risk level corresponding to at least one chemical parameter to be monitored.

[0061] The purpose of analyzing the historical operating data and historical safety monitoring results of each chemical parameter to be monitored is to determine the possible consequences or factors that may cause the chemical parameter to exceed the normal parameter range, such as potential equipment damage, safety risks and maintenance costs, etc., to evaluate the nuclear safety risk issues caused by the above consequences or factors, and to grade each chemical parameter to be monitored based on the evaluation results.

[0062] For example, the reason why parameter A exceeds the normal range is that equipment A is severely damaged. Parameter B exceeding the normal range may require the termination of the normal reaction of the entire nuclear reactor. Parameter C exceeding the normal range may cause irreversible pollution to the external environment. Based on this, the severity of the leading factors or consequences is graded, and risk level 2 is obtained for parameters B and C, and risk level 1 is for parameter A, where the higher the level, the higher the risk.

[0063] Optionally, the definition range of the risk level can be freely set, such as from 1 to 5. It is not limited as a special value in the embodiment of the present application and can be uniformly set according to the evaluation requirements, which will not be repeated here.

[0064] In a possible implementation, the operation evaluation parameter is determined based on the monitored data value and has a certain objectivity. The degree to which the parameter exceeds the safety threshold in the current parameter monitoring period can be represented by the difference between the monitoring value and the safety threshold. In the embodiment of the present application, the degree of excess can also be represented by the ratio of the difference to the safety threshold.

[0065] Step S140, determining a monitoring result corresponding to the monitoring value according to a relationship between a preset attribute evaluation parameter and an operation evaluation parameter.

[0066] In the embodiment of the present application, the importance weight, risk level, degree of excess value and cumulative number have an additive relationship with respect to the impact of the monitored chemical parameters on safe operation. Therefore, all parameters can be added up as the monitoring result corresponding to the monitoring value.

[0067] In a possible implementation, the product of the importance weight, risk level, degree value and number is determined as the monitoring result corresponding to the monitoring value. Specifically, the calculation can be performed with reference to the following formula (1), which is as follows:

[0068] (1)

[0069] in, The degree to which the monitoring value exceeds the safety threshold.

[0070] QS is the monitoring result, RV is the actual monitoring value of the chemical parameter to be monitored, LV is the safety threshold corresponding to the chemical parameter to be monitored, IW is the importance weight of the chemical parameter to be monitored, RL is the risk level corresponding to the chemical parameter to be monitored, and DP is the number of parameter monitoring cycles in which the monitoring value of the chemical parameter to be monitored exceeds the safety threshold;

[0071] Referring to the example below, the process of determining the monitoring results based on formula (1) is illustrated. For example, the chemical parameter to be monitored is lithium concentration, and the parameter monitoring period is one day. Today, the lithium concentration monitored is 1.2ppm, which exceeds the safety threshold of 1.0ppm for lithium concentration, triggering the evaluation of lithium concentration, and obtaining the attribute evaluation parameters and operation evaluation parameters corresponding to the lithium concentration, where the importance weight IW is 80%, the risk RL level is 5, the number of days DP that the lithium concentration continues to exceed the safety threshold is 2.6 days, and the degree of exceeding the safety threshold is (1.2-1.0) / 1.0. Substitute the values ​​corresponding to the above parameters into formula (1) to determine the monitoring results of lithium concentration, as shown in formula (2):

[0072] (2)

[0073] Step S150, when the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, query the key factor corresponding to the chemical parameter to be monitored, and send the key factor to the front end.

[0074] Among them, the key factors are the factors that cause the monitoring values ​​of the monitored chemical parameters to exceed the safety threshold.

[0075] In a possible implementation, the preset monitoring condition may at least be: the monitoring result of the chemical parameter to be monitored is greater than a preset monitoring threshold, or the sum of the monitoring result of the chemical parameter to be monitored and the monitoring results of other chemical parameters to be monitored is greater than the preset monitoring threshold.

[0076] It is understandable that the preset monitoring threshold can collect data in advance of monitoring values ​​of multiple chemical parameters that exceed the normal range limit, determine the corresponding monitoring results according to the above steps S130-140, and use the minimum value or average value of all monitoring results as the preset monitoring threshold. Optionally, the preset monitoring threshold can also be set in other ways, which is not uniquely limited here.

[0077] When the monitoring result of the chemical parameter to be monitored exceeds the preset monitoring threshold, or the sum of the monitoring results of other chemical parameters to be monitored exceeds the preset monitoring threshold, it indicates that the parameter of the current chemical parameter to be monitored is abnormal, and a self-check prompt needs to be sent to the front end. In order to improve the self-check efficiency of the personnel in the station, the embodiment of the present application queries the reasons that may cause the monitoring result of the chemical parameter to be monitored to be substandard from the local or cloud, and sends the reasons to the front end. It is understandable that if it is a local query, the reasons for the substandard stored locally can be improved by the personnel in the station, and can also be automatically stored in combination with the data analysis results. By improving the key factors corresponding to the chemical parameters to be monitored stored locally, the accuracy of the self-check prompt is improved, thereby improving the self-check efficiency of the personnel in the station.

[0078] In another possible implementation, when the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, the chemical parameter to be monitored is determined as a parameter item to be improved, and the parameter item to be improved is sent to the front end.

[0079] During the safety assessment process of a nuclear power plant, there is a need to determine the items that need to be improved in the nuclear power plant. Therefore, the chemical parameters to be monitored whose monitoring results do not meet the preset monitoring conditions are listed as parameter items to be improved and sent to the front end so that the station personnel or evaluators at the front end can directly obtain the evaluation results without manual statistics.

[0080] In summary, the nuclear power plant chemical parameter evaluation method provided in the embodiment of the present application, when the monitoring value of the chemical parameter to be monitored is greater than the safety threshold, obtains the attribute evaluation parameters that can characterize the degree of influence of the type of chemical parameter to be monitored on the safe operation of the nuclear power plant and the degree of safety hazards, including importance parameters and risk levels, and obtains operation evaluation parameters that can characterize the real-time operation status and historical operation status of the chemical parameter to be monitored, including the degree to which the monitoring value exceeds the safety threshold and the number of monitoring values ​​greater than the safety threshold in all parameter monitoring cycles before the current moment. According to the relationship between the pre-set attribute evaluation parameters and the operation evaluation parameters, the monitoring results corresponding to the monitoring values ​​are determined based on the comprehensive operation status and the degree of influence. Compared with the prior art, the monitoring results of the present application are more objective and comprehensive, so that the key factors provided to the front end based on the monitoring results are more accurate, which is convenient for front-end self-inspection.

[0081] A nuclear power plant chemical parameter monitoring device provided in an embodiment of the present application is described below. The nuclear power plant chemical parameter monitoring device described below and the nuclear power plant chemical parameter monitoring method described above can refer to each other.

[0082] First, combine Figure 2 , a nuclear power plant chemical parameter monitoring device is introduced, such as Figure 2 As shown, the nuclear power plant chemical parameter monitoring device may include:

[0083] The parameter acquisition unit 100 is used to acquire the monitoring value of the chemical parameter to be monitored, wherein the monitoring value is the parameter value monitored corresponding to the current parameter monitoring period;

[0084] The evaluation parameter acquisition unit 200 is used to acquire the evaluation parameter set of the chemical parameter to be monitored when it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, the evaluation parameter set including: attribute evaluation parameters and operation evaluation parameters, the attribute evaluation parameters including: the importance weight of the influence degree of the type of chemical parameter to be monitored on the operation of the nuclear power plant, and the risk level of the type of chemical parameter to be monitored, and the operation evaluation parameters including: the degree value of the monitoring value exceeding the safety threshold, and the number of monitoring values ​​greater than the safety threshold in all the monitoring cycles of the parameter monitoring before the current moment;

[0085] A result confirmation unit 300, for determining a monitoring result corresponding to the monitoring value according to a preset relationship between the attribute evaluation parameter and the operation evaluation parameter;

[0086] The result feedback unit 400 is used to query the key factors corresponding to the chemical parameters to be monitored when the monitoring results of the chemical parameters to be monitored meet the preset monitoring conditions, and send the key factors to the front end. The key factors are the factors that cause the monitoring values ​​of the chemical parameters to be monitored to exceed the safety threshold.

[0087] In a possible implementation, the result confirmation unit 300 includes:

[0088] The operation subunit is used to determine the product of the importance weight, the risk level, the degree value and the number as the monitoring result corresponding to the monitoring value.

[0089] In a possible implementation, the preset monitoring condition includes: the monitoring result of the chemical parameter to be monitored is greater than a preset monitoring threshold, or the sum of the monitoring result of the chemical parameter to be monitored and the monitoring results of other chemical parameters to be monitored is greater than the preset monitoring threshold.

[0090] In a possible implementation, the method further includes:

[0091] The improvement item determination unit is used to determine the chemical parameter to be monitored as a parameter item to be improved when the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, and send the parameter item to be improved to the front end.

[0092] In a possible implementation, the method further includes:

[0093] The early warning unit is used to send early warning information indicating that the chemical parameter to be monitored has a safety risk to the front end when it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored.

[0094] In one possible implementation, a functional unit for implementing a process of presetting the importance weight of the degree of influence of the type of chemical parameter to be monitored on the operation of a nuclear power plant includes:

[0095] A historical data acquisition unit, used to acquire historical data corresponding to each chemical parameter to be monitored in the nuclear power plant;

[0096] A data analysis unit, used to analyze the historical data corresponding to each of the chemical parameters to be monitored, and determine the degree of influence of each of the chemical parameters to be monitored on the safe operation of the nuclear power plant;

[0097] The weight allocation unit is used to allocate a weight to each of the chemical parameters to be monitored according to the degree of influence, and the weight is used as an importance weight.

[0098] In one possible implementation, the functional unit for implementing the process of presetting the risk level of the type of chemical parameter to be monitored includes:

[0099] A factor acquisition unit is used to obtain the key factors corresponding to each chemical parameter to be monitored, as well as the historical operation data and historical safety monitoring results of the nuclear power plant;

[0100] A degree analysis unit, used to analyze the degree of influence of the key factor corresponding to each of the chemical parameters to be monitored on the safe operation of the nuclear power plant according to the historical operation data and the historical safety monitoring results of the nuclear power plant, as the safety influence degree of each of the chemical parameters to be monitored;

[0101] The level division unit is used to divide the risk levels into a preset number according to the safety impact degree of each of the chemical parameters to be monitored, and each of the risk levels corresponds to at least one of the chemical parameters to be monitored.

[0102] In summary, when the monitored value of the chemical parameter to be monitored is greater than the safety threshold, the embodiment of the present application obtains attribute evaluation parameters that can characterize the degree of influence of the type of chemical parameter to be monitored on the safe operation of the nuclear power plant and the degree of safety hazards, including importance parameters and risk levels, and obtains operation evaluation parameters that can characterize the real-time operation status and historical operation status of the chemical parameter to be monitored, including the degree to which the monitored value exceeds the safety threshold and the number of monitored values ​​greater than the safety threshold in all parameter monitoring cycles before the current moment. Based on the relationship between the pre-set attribute evaluation parameters and the operation evaluation parameters, the monitoring results corresponding to the monitoring values ​​are determined based on the comprehensive operation status and the degree of influence. Compared with the prior art, the monitoring results of the present application are more objective and comprehensive, so that the key factors provided to the front end based on the monitoring results are more accurate, which is convenient for front-end self-inspection.

[0103] The nuclear power plant chemical parameter monitoring device provided in the embodiment of the present application can be applied to nuclear power plant chemical parameter monitoring equipment.

[0104] Figure 3 The schematic diagram of the structure of the chemical parameter monitoring equipment of the nuclear power plant is shown. Figure 3 , the structure of the nuclear power plant chemical parameter monitoring device may include: at least one processor 10, at least one memory 20, at least one communication bus 30 and at least one communication interface 40;

[0105] In the embodiment of the present application, the number of the processor 10, the memory 20, the communication bus 30, and the communication interface 40 is at least one, and the processor 10, the memory 20, and the communication interface 40 communicate with each other through the communication bus 30;

[0106] The processor 10 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention;

[0107] The memory 20 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory;

[0108] The memory stores a program, and the processor can call the program stored in the memory, and the program is used to implement each processing flow in the aforementioned nuclear power plant chemical parameter monitoring method.

[0109] An embodiment of the present application also provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by a nuclear power plant chemical parameter monitoring device, the nuclear power plant chemical parameter monitoring device can implement the various processing flows in the aforementioned nuclear power plant chemical parameter monitoring method.

[0110] It is understandable that before using the technical solutions disclosed in the embodiments of this application, the types, scope of use, usage scenarios, etc. of personal information and nuclear power plant information involved in this application should be informed to users and their authorization should be obtained in an appropriate manner in accordance with relevant laws and regulations.

[0111] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0112] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0113] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for monitoring chemical parameters of a nuclear power plant, characterized in that: include: Obtaining a monitoring value of a chemical parameter to be monitored, wherein the monitoring value is a parameter value monitored corresponding to a current parameter monitoring period; When it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, obtaining an evaluation parameter set of the chemical parameter to be monitored, the evaluation parameter set including: attribute evaluation parameters and operation evaluation parameters, the attribute evaluation parameters including: the importance weight of the influence of the preset type of chemical parameter to be monitored on the operation of the nuclear power plant, and the preset risk level of the type of chemical parameter to be monitored, the operation evaluation parameters including: the degree value of the monitoring value exceeding the safety threshold, and the number of monitoring values ​​greater than the safety threshold among all the monitoring values ​​corresponding to the parameter monitoring cycles before the current moment; Determining a monitoring result corresponding to the monitoring value according to a preset relationship between the attribute evaluation parameter and the operation evaluation parameter; When the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, the key factor corresponding to the chemical parameter to be monitored is queried and the key factor is sent to the front end. The key factor is the factor that causes the monitoring value of the chemical parameter to be monitored to exceed the safety threshold.

2. The method for monitoring chemical parameters of a nuclear power plant according to claim 1, characterized in that: The determining of the monitoring result corresponding to the monitoring value according to the preset relationship between the attribute evaluation parameter and the operation evaluation parameter includes: The product of the importance weight, the risk level, the degree value and the number is determined as the monitoring result corresponding to the monitoring value.

3. The method for monitoring chemical parameters of a nuclear power plant according to claim 1, characterized in that: The preset monitoring condition includes: the monitoring result of the chemical parameter to be monitored is greater than a preset monitoring threshold, or the sum of the monitoring result of the chemical parameter to be monitored and the monitoring results of other chemical parameters to be monitored is greater than the preset monitoring threshold.

4. The method for monitoring chemical parameters of a nuclear power plant according to claim 3, characterized in that: Also includes: In the case where the monitoring result of the chemical parameter to be monitored meets the preset monitoring condition, the chemical parameter to be monitored is determined as a parameter item to be improved, and the parameter item to be improved is sent to the front end.

5. The method for monitoring chemical parameters of a nuclear power plant according to claim 1, characterized in that: Also includes: When it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, early warning information indicating that there is a safety risk in the chemical parameter to be monitored is sent to the front end.

6. The method for monitoring chemical parameters of a nuclear power plant according to any one of claims 1 to 5, characterized in that: The process of presetting the importance weights of the types of chemical parameters to be monitored for their impact on the operation of the nuclear power plant includes: Obtain historical data corresponding to each chemical parameter to be monitored in the nuclear power plant; Analyze the historical data corresponding to each of the chemical parameters to be monitored to determine the degree of influence of each of the chemical parameters to be monitored on the safe operation of the nuclear power plant; According to the degree of influence, a weight is assigned to each of the chemical parameters to be monitored, and the weight is used as an importance weight.

7. The method for monitoring chemical parameters of a nuclear power plant according to any one of claims 1 to 5, characterized in that: The process of presetting the risk level of the type of chemical parameter to be monitored comprises: Obtain the key factors corresponding to each chemical parameter to be monitored, as well as the historical operation data and historical safety monitoring results of the nuclear power plant; Analyzing the influence of the key factors corresponding to each of the chemical parameters to be monitored on the safe operation of the nuclear power plant based on the historical operation data and the historical safety monitoring results of the nuclear power plant as the safety influence of each of the chemical parameters to be monitored; According to the safety impact degree of each of the chemical parameters to be monitored, a preset number of risk levels are divided, and each of the risk levels corresponds to at least one of the chemical parameters to be monitored.

8. A nuclear power plant chemical parameter monitoring device, characterized in that: include: A parameter acquisition unit, used to acquire a monitoring value of a chemical parameter to be monitored, wherein the monitoring value is a parameter value monitored corresponding to a current parameter monitoring period; An evaluation parameter acquisition unit is used to acquire an evaluation parameter set of the chemical parameter to be monitored when it is detected that the monitoring value is greater than the safety threshold corresponding to the chemical parameter to be monitored, the evaluation parameter set including: attribute evaluation parameters and operation evaluation parameters, the attribute evaluation parameters including: the importance weight of the influence degree of the type of chemical parameter to be monitored on the operation of the nuclear power plant, and the risk level of the type of chemical parameter to be monitored, and the operation evaluation parameters including: the degree value of the monitoring value exceeding the safety threshold, and the number of monitoring values ​​greater than the safety threshold among all the monitoring values ​​corresponding to the parameter monitoring cycles before the current moment; A result confirmation unit, used to determine the monitoring result corresponding to the monitoring value according to the preset relationship between the attribute evaluation parameter and the operation evaluation parameter; The result feedback unit is used to query the key factors corresponding to the chemical parameters to be monitored when the monitoring results of the chemical parameters to be monitored meet the preset monitoring conditions, and send the key factors to the front end. The key factors are the factors that cause the monitoring values ​​of the chemical parameters to be monitored to exceed the safety threshold.

9. A nuclear power plant chemical parameter monitoring device, characterized in that: The method comprises at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the nuclear power plant chemical parameter monitoring device can implement the nuclear power plant chemical parameter monitoring method as described in any one of claims 1 to 7.

10. A computer storage medium, characterized in that: The computer storage medium carries one or more computer programs. When the one or more computer programs are executed by the nuclear power plant chemical parameter monitoring equipment, the nuclear power plant chemical parameter monitoring equipment can implement the nuclear power plant chemical parameter monitoring method as described in any one of claims 1 to 7.

Images