Nuclear power plant instrument control important sensitive parameter management method and system

Abstract

The invention relates to a nuclear power plant instrument control important sensitive parameter management method and system. The method comprises the following steps that a production fuel management server obtains different test data from a plurality of systems and judges whether parameter modification is needed or not according to the test data; and if yes, calculating a parameter target value of the parameter to be modified according to the test data. And sending out the parameter target value when the parameter target value is confirmed to be reliable. And the instrument control important sensitive parameter management server receives the parameter target value, checks the parameter target value according to the historical database, and sends out a parameter modification task to inform the field of parameter modification when the parameter target value passes the check. And the execution result input from the terminal is received and filed, and the execution result is sent to the production fuel management server. According to the invention, full-process informatization and automation of important sensitive parameters of instrument control can be realized, human factor risks of manual mail transmission and parameter transcription errors are eliminated, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power important parameter management, and in particular to a method and system for managing important sensitive parameters of instrumentation and control of a nuclear power plant. Background Art

[0002] Important sensitive parameters of nuclear power plant instrumentation and control include key parameters such as nuclear instrumentation system, rod control system, and test data acquisition system. Not only the measurement of reactor nuclear power depends on these important parameters, but also the control and protection of the unit. During the daily operation of the unit, calculations and parameter modifications need to be frequently performed. Therefore, once they fail, the consequences are very serious. However, in the past, the management of important sensitive parameters of nuclear power plant instrumentation and control mainly relied on manual data transcription, manual verification of calculation parameters, and manual delivery of paper documents. This management method is inefficient and has poor real-time performance, and it brings great human factors risks to the safe and stable operation of the unit. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method and system for managing important sensitive parameters of instrumentation and control of a nuclear power plant.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a method for managing important sensitive parameters of instrumentation and control of a nuclear power plant, comprising the following steps:

[0005] The production fuel management server obtains different test data from multiple systems, and determines whether parameter modification is required based on the test data; if so, the parameter target value of the parameter to be modified is calculated based on the test data; when the parameter target value is confirmed to be reliable, it is issued;

[0006] The instrumentation and control important sensitive parameter management server receives the parameter target value, and verifies the parameter target value according to the historical database. When passing the verification, it issues a parameter modification task to notify the on-site execution of the parameter modification; receives the execution result entered from the terminal and archives it, and sends the execution result to the production fuel management server.

[0007] Furthermore, in the method for managing important sensitive parameters of nuclear power plant instrumentation and control according to the present invention, the step of judging whether parameter modification is required according to the test data includes:

[0008] Calculate the maximum nuclear thermal power deviation value according to the test data;

[0009] Determining whether the maximum nuclear thermal power deviation value reaches a preset threshold;

[0010] If so, it is determined that parameter modification is required.

[0011] Furthermore, in the method for managing important sensitive parameters of instrumentation and control of a nuclear power plant according to the present invention, the step of calculating the target value of the parameter to be modified according to the test data includes:

[0012] Conducting a test according to the test data to obtain the parameter target value;

[0013] The test data includes at least one of reactor thermal power, nuclear power parameters, power level, fuel consumption, and current values ​​of parameters to be modified.

[0014] Furthermore, in the method for managing important sensitive parameters of instrumentation and control of a nuclear power plant according to the present invention, the step of issuing the parameter target value when the parameter target value is confirmed to be reliable includes:

[0015] The parameter target value is compiled and verified, and after the verification is completed, it enters the first approval process. When the approval is passed, it is confirmed to be reliable. Then, the parameter target value is sent to the instrumentation and control important sensitive parameter management server.

[0016] Furthermore, in the method for managing important sensitive parameters of nuclear power plant instrumentation and control according to the present invention, the step of issuing a parameter modification task to notify the site to perform parameter modification includes:

[0017] Sending the parameter modification task to the terminal of the preparation engineer;

[0018] Receive the input information from the preparation engineer through the terminal and the work order information obtained from the power plant production process data server to form work ticket information;

[0019] A second approval process is initiated according to the work ticket information and after the first approval node is passed, an execution notification reminder message is issued to notify the site to execute parameter modifications.

[0020] Furthermore, in the nuclear power plant instrumentation and control important sensitive parameter management method described in the present invention, the instrumentation and control important sensitive parameter management server also automatically calculates the parameter target value and converts it into the on-site equipment target setting value for on-site parameter modification.

[0021] Furthermore, in the method for managing important sensitive parameters of instrumentation and control of a nuclear power plant according to the present invention, the step of receiving the execution result entered from the terminal and archiving it comprises:

[0022] receiving the execution result after the parameter modification is completed from the terminal of the operation person in charge, and transferring the second approval process to the coordinating engineer approval node;

[0023] When receiving the approval result input by the coordinating engineer through his terminal, the execution result is saved in the historical database.

[0024] Furthermore, in the method for managing important sensitive parameters of nuclear power plant instrumentation and control described in the present invention, the production fuel management server archives the execution result after confirming that the execution result is complete.

[0025] Furthermore, in the method for managing important sensitive parameters of nuclear power plant instrumentation and control described in the present invention, the multiple systems include a distributed control system, a real-time information monitoring system and / or a performance test and data acquisition system.

[0026] In addition, the present invention also provides a nuclear power plant instrumentation and control important sensitive parameter management system, comprising:

[0027] Production Fuel Management Server for:

[0028] Obtain different test data from multiple systems, and determine whether parameter modification is required based on the test data; if so, calculate the parameter target value of the parameter to be modified based on the test data; and issue the parameter target value when it is confirmed to be reliable;

[0029] I&C important sensitive parameter management server, used for:

[0030] Receive the parameter target value, and verify the parameter target value according to the historical database. When passing the verification, issue a parameter modification task to notify the on-site execution of the parameter modification; receive the execution result entered from the terminal and archive it, and send the execution result to the production fuel management server.

[0031] The implementation of the nuclear power plant instrumentation and control important sensitive parameter management method and system of the present invention has the following beneficial effects: the present invention can realize the informatization and automation of the entire process of instrumentation and control important sensitive parameters, eliminate the human risks of manual email delivery and transcription parameter errors, improve work efficiency, realize horizontal data connection, break data silos, realize more accurate data for calculation reference data, and eliminate the problem of calculation reference data errors affecting the safe and stable operation of nuclear power units. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0033] Figure 1 It is a flow chart of a method for managing important sensitive parameters of instrumentation and control of a nuclear power plant provided by an embodiment of the present invention;

[0034] Figure 2 It is a structural diagram of a nuclear power plant instrumentation and control important sensitive parameter management system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0036] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more fully below, and the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0038] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present invention, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. It is not necessarily required or implied that there is any such actual relationship or order between these entities or operations.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] In one of the embodiments provided by the present invention, reference Figure 1 The method for managing important sensitive parameters of instrumentation and control in a nuclear power plant of this embodiment comprises the following steps:

[0041] S1. The production fuel management server obtains different test data from multiple systems, and determines whether parameter modification is required based on the test data. If so, the parameter target value of the parameter to be modified is calculated based on the test data. When the parameter target value is confirmed to be reliable, it is sent out. It can be understood that the production fuel management server analyzes and calculates a result based on the test data according to a certain algorithm, judges the result, and enters the parameter modification process after reaching a certain threshold. After entering the parameter modification process, a test is carried out first, and the target value of the parameter to be modified is calculated based on the data required for the test. After the parameters are calculated and the data reliability is determined, they can be automatically sent to the execution professional (instrumentation and control important sensitive parameter management server) after setting the recipient.

[0042] In some embodiments, the production fuel management server obtains different test data from multiple systems, and can calculate the maximum nuclear thermal power deviation value based on the test data. Determine whether the maximum nuclear thermal power deviation value reaches a preset threshold. When the preset threshold is reached, it can be determined that parameter modification is required, and the parameter to be modified is determined accordingly. Then, the parameter target value is obtained by conducting a test. By writing and verifying the parameter target value, and entering the first approval process after completing the verification, when the approval is passed, it is confirmed that it has reliability, and then the parameter target value is sent to the instrumentation and control important sensitive parameter management server.

[0043] In a specific embodiment, the system records the core working status every day, and the different test data obtained from different systems include but are not limited to reading the reactor thermal power, nuclear power parameters, etc. in the distributed control system (DCS) of the nuclear power plant, the real-time information monitoring system (KNS), and the test data acquisition system (KME). Specifically, the main test data parameters are shown in Table 1.

[0044] Table 1

[0045]

[0046] KIC is the power plant computer information and control system, RPN is the nuclear instrument system, LSS is the loss of coolant accident monitoring system, P rKME is the core thermal power obtained by thermal balance measurement, P rRPN is the RPN power range channel core power, K n is the K parameter of the RPN system confirmed based on the average power of each RPN channel and the KME thermal balance, P rLSS is the nuclear power calculated based on the current values ​​of the six ionization chambers in the LSS system,

[0047] It is the RPN power range coefficient calculated according to the current values ​​of the six ionization chambers in the LSS system. SAP is Systems Applications Products, a large-scale management application software of ERP (Enterprise Resource Planning). KH refers to the correction coefficient of the upper current value of the power range channel, and KB refers to the correction coefficient of the lower current value of the power range channel.

[0048] It can be understood that the important sensitive parameters of the nuclear power plant instrumentation and control can be manually read from the instruments or systems of the nuclear power plant reactor, and the read important sensitive parameters of the nuclear power plant reactor are filled into the corresponding interactive interface of the processor, or the processor obtains the important sensitive parameters of the nuclear power plant reactor from the instruments or systems of the nuclear power plant reactor. This embodiment does not impose any limitation on the method of obtaining the important sensitive parameters of the nuclear power plant reactor.

[0049] It can be understood that the important sensitive parameters of a nuclear power plant reactor can be important sensitive parameters within a nuclear power plant, or important sensitive parameters within several interconnected nuclear power plants, wherein the enterprise management solution (Systems Applications and Products in data processing, SAP) system used by several nuclear power plants can realize communication connection between several nuclear power plants through the process integration (Process Integration, PI) interface. In this embodiment, no limitation is imposed on the source of the important sensitive parameters of the nuclear power plant reactor.

[0050] S2. The instrumentation and control important sensitive parameter management server receives the parameter target value and verifies the parameter target value according to the historical database. When the verification is passed, a parameter modification task is issued to notify the site to perform the parameter modification. Then, the execution result entered from the terminal is received and archived, and the execution result is sent to the production fuel management server. Optionally, the production fuel management server archives the execution result after confirming that it is complete.

[0051] Optionally, the instrumentation and control important sensitive parameter management server also automatically calculates the parameter target value and converts it into the target setting value of the field equipment, that is, the calculated value is converted according to the parameter format of the field equipment for field parameter modification. In other words, the parameter target value is automatically converted into the process system parameter, which can be directly modified and adjusted during field implementation.

[0052] Since the target value cannot be modified directly in the field equipment, only the intermediate parameters can be modified, so the parameter target value is verified according to the historical database. Taking the power range parameter modification as an example, the parameter modified in the field equipment is K, which is different from the old value K old related:

[0053]

[0054] In some embodiments, the instrumentation and control important sensitive parameter management server receives the parameter target value, and verifies the parameter target value according to the historical database. When the verification is passed, a parameter modification task is issued to the terminal of the preparation engineer. The input information of the preparation engineer through the terminal and the work order information obtained from the power plant production process data server are received to form work ticket information. According to the work ticket information, the second approval process is initiated and after the first approval node is passed, an execution notification reminder message is issued to notify the site to execute the parameter modification. It should be noted that the first approval node of this embodiment may not be limited to one approval node, that is, it may also include multiple approval nodes, and then after determining that the last approval node has passed the approval, an execution notification reminder message is issued. The specific number of approval nodes can be set according to actual needs, and the present invention does not make specific limitations.

[0055] In some embodiments, the instrumentation and control important sensitive parameter management server receives the parameter target value, and verifies the parameter target value according to the historical database. When the verification is passed, a parameter modification task is issued to notify the site to perform the parameter modification. Then, the execution result after the parameter modification is completed is received from the terminal of the person in charge of the operation, and the second approval process is transferred to the coordination engineer approval node. Then, when the approval result input by the coordination engineer through his terminal is received, the execution result is saved to the historical database.

[0056] It should be noted that the first approval process and the second approval process are only used to distinguish the execution of the next operation when the corresponding node in the approval flow is approved, and it is not necessary to execute the next operation only when the entire approval process is completed. Therefore, in the present invention, the first approval process and the second approval process can be two consecutive sub-approval flows in the same approval process, or they can be independently initiated approval flows.

[0057] It can be understood that in this embodiment, after receiving the parameters, the instrumentation and control important sensitive parameter management system automatically compares them with the historical database to confirm that the last modified parameter value is accurate. After confirming that it is accurate, the data is received and the execution process is entered after the writing, verification, and approval process, otherwise the modification is returned and a prompt message is issued. After receiving the task of modifying the parameters, the preparation engineer prepares the work order (the work order information can be obtained from the power plant production process data server) and enters the work ticket information in the approval process (writing). At the same time, the system automatically calculates the parameters and converts the parameter target value into the target setting value of the field equipment. After verification and approval to confirm the reliability and accuracy, the work is assigned to the person in charge of the operation, and the system automatically notifies the person in charge of the operation. The person in charge of the operation can conveniently print parameter reports to facilitate the implementation of parameter modifications on site. After the parameter modification is completed, the person in charge of the operation approves it, and the approval process is transferred to the coordination engineer for review. After confirming that the modification is completed, the instrumentation and control important sensitive parameter management server archives it to the database and automatically sends the execution results to the fuel management server. The fuel management system archives it after confirming that the execution results are complete.

[0058] This embodiment can realize the informatization and automation of the entire process of important sensitive parameters of instrumentation and control, eliminate the human risks of manual email delivery and transcription parameter errors, improve work efficiency, realize horizontal data connection, break data silos, realize more accurate data of calculation reference data, and eliminate the problem of calculation reference data errors affecting the safe and stable operation of nuclear power units.

[0059] In another embodiment provided by the present invention, reference Figure 2 The nuclear power plant instrumentation and control important sensitive parameter management system of this embodiment includes:

[0060] Production Fuel Management Server for:

[0061] Obtain different test data from multiple systems and determine whether parameter modification is required based on the test data. If so, calculate the target value of the parameter to be modified based on the test data. When the target value is confirmed to be reliable, it will be issued.

[0062] I&C important sensitive parameter management server, used for:

[0063] Receive parameter target values ​​and check them against the historical database. When they pass the check, issue a parameter modification task to notify the site to perform parameter modification. Receive the execution results entered from the terminal and archive them, and send the execution results to the production fuel management server.

[0064] In this embodiment, through S01, S02 server interface ( Figure 2 ), to connect the fuel management system data with the instrumentation and control important sensitive parameter management system processes and data, to achieve informatization and automation of the entire process (upstream calculation, midstream execution, downstream archiving), and to solve the problems of low efficiency, weak real-time performance, and high human risk in manual data transcription, manual verification of calculation parameters, and manual transmission of paper documents. That is, through the informatization of the entire process, a closed loop is formed, and the database is unified. The fuel management system database is used as a benchmark, and the instrumentation and control important sensitive parameter management system database is used as a reference, so that the calculation link is more accurate and reliable, and the human risk of manual verification is solved, and automatic data transmission and automatic calculation (execution link) are realized, which improves work efficiency.

[0065] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0066] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0067] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A method for managing important sensitive parameters of instrumentation and control in a nuclear power plant, characterized in that: The following steps are involved: The production fuel management server obtains different test data from multiple systems, and determines whether parameter modification is required based on the test data; if so, the parameter target value of the parameter to be modified is calculated based on the test data; when the parameter target value is confirmed to be reliable, it is issued; The instrumentation and control important sensitive parameter management server receives the parameter target value, and verifies the parameter target value according to the historical database. When passing the verification, it issues a parameter modification task to notify the on-site execution of the parameter modification; receives the execution result entered from the terminal and archives it, and sends the execution result to the production fuel management server.

2. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1 is characterized in that: The step of judging whether parameter modification is required according to the test data includes: Calculate the maximum nuclear thermal power deviation value according to the test data; Determining whether the maximum nuclear thermal power deviation value reaches a preset threshold; If so, it is determined that parameter modification is required.

3. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1 is characterized in that: The step of calculating the parameter target value of the parameter to be modified according to the test data includes: Conducting a test according to the test data to obtain the parameter target value; The test data includes at least one of reactor thermal power, nuclear power parameters, power level, fuel consumption, and current values ​​of parameters to be modified.

4. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1 is characterized in that: When the parameter target value is confirmed to be reliable, the step of issuing the target value includes: The parameter target value is compiled and verified, and after the verification is completed, it enters the first approval process. When the approval is passed, it is confirmed to be reliable. Then, the parameter target value is sent to the instrumentation and control important sensitive parameter management server.

5. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1 is characterized in that: The step of issuing a parameter modification task to notify the site to perform parameter modification includes: Sending the parameter modification task to the terminal of the preparation engineer; Receive the input information from the preparation engineer through the terminal and the work order information obtained from the power plant production process data server to form work ticket information; A second approval process is initiated according to the work ticket information and after the first approval node is passed, an execution notification reminder message is issued to notify the site to execute parameter modifications.

6. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 5 is characterized in that: The instrumentation and control important sensitive parameter management server also automatically calculates the parameter target value and converts it into the target setting value of the on-site equipment for on-site parameter modification.

7. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 5 is characterized in that: The step of receiving the execution result entered from the terminal and archiving it includes: receiving the execution result after the parameter modification is completed from the terminal of the operation person in charge, and transferring the second approval process to the coordinating engineer approval node; When receiving the approval result input by the coordinating engineer through his terminal, the execution result is saved in the historical database.

8. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1 is characterized in that: The production fuel management server archives the execution result after confirming that the execution result is complete.

9. The method for managing important sensitive parameters of nuclear power plant instrumentation and control according to claim 1, characterized in that: The multiple systems include a distributed control system, a real-time information monitoring system and / or a performance test and data acquisition system.

10. A nuclear power plant instrumentation and control important sensitive parameter management system, characterized in that: include: Production Fuel Management Server for: Obtain different test data from multiple systems, and determine whether parameter modification is required based on the test data; if so, calculate the parameter target value of the parameter to be modified based on the test data; and issue the parameter target value when it is confirmed to be reliable; I&C important sensitive parameter management server, used for: Receive the parameter target value, and verify the parameter target value according to the historical database. When passing the verification, issue a parameter modification task to notify the on-site execution of the parameter modification; receive the execution result entered from the terminal and archive it, and send the execution result to the production fuel management server.

Images