Nuclear power plant reactor protection system and database upgrading method and processing equipment thereof

Abstract

The invention relates to a nuclear power station reactor protection system and a database upgrading method and processing equipment thereof, and the method comprises the steps: S10, reading configuration data of a to-be-upgraded database before upgrading, and storing and recording the configuration data as read data; s20, the specific command signal is locked according to the real-time state of the unit, so that the state of the unit is kept stable; s30, upgrading the configuration signal in the database to be upgraded; s40, reading configuration data of the to-be-upgraded database after upgrading, and recording the configuration data as update data; s50, comparing the read data with the updated data to obtain a comparison result; s60, judging whether upgrading is abnormal or not according to the real-time state of the unit and a comparison result, if yes, executing S70, and if not, executing S80; s70, abnormal warning information is generated; and S80, unlocking the specific command signal. According to the invention, a standardized automatic upgrading scheme is realized, the manual operation amount of workers can be reduced, and the human error risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor protection systems, and particularly relates to a nuclear power plant reactor protection system and a database upgrading method and processing device thereof. BACKGROUND

[0002] In the related art, a database upgrading method of a nuclear power plant reactor protection system is to first update the database, and then a worker checks whether the data in the database before and after upgrading meets the requirements, since most operations need to be manually operated by the worker, therefore, the traditional database upgrading takes a very long time (up to 68 hours), and the manual operation amount is large, and human errors are prone to occur, which leads to a large amount of manpower and time consumed in each database upgrading, and is not conducive to the safety of the nuclear power plant. SUMMARY

[0003] The present application aims to solve the technical problem of providing a nuclear power plant reactor protection system and a database upgrading method and processing device thereof.

[0004] The technical scheme adopted by the present application to solve the technical problem is: a database upgrading method of a nuclear power plant reactor protection system is constructed, comprising:

[0005] S10, reading configuration data of a database to be upgraded before upgrading, storing and recording as read data;

[0006] S20, locking a specific command signal according to a real-time state of a unit, so that the state of the unit remains stable;

[0007] S30, upgrading configuration signals in the database to be upgraded;

[0008] S40, reading configuration data of the database to be upgraded after upgrading, and recording as updated data;

[0009] S50, comparing the read data and the updated data to obtain a comparison result;

[0010] S60, determining whether there is an exception in upgrading according to the real-time state of the unit and the comparison result, if yes, performing S70, otherwise performing S80;

[0011] S70, generating an exception warning information;

[0012] S80, unlocking the specific command signal.

[0013] Preferably, in the S50, the comparing the read data and the updated data comprises:

[0014] classifying the read data and the update data according to signal types, to obtain a read switch signal set, a read analog signal set, an update switch signal set and an update analog signal set;

[0015] determining consistency between all functionally identical two switch signals in the read switch signal set and the update switch signal set respectively, recording all switch signals with consistent signal values before and after upgrading as normal switch signals, and recording all switch signals with inconsistent signal values before and after upgrading as to-be-determined switch signals;

[0016] determining error sizes between all functionally identical two analog signals in the read analog signal set and the update analog signal set respectively, recording all analog signals with errors within corresponding error ranges before and after upgrading as normal analog signals, and recording all analog signals with errors not within corresponding error ranges before and after upgrading as to-be-determined analog switch signals;

[0017] generating a comparison result according to all records.

[0018] Preferably, in the S60, determining whether the upgrading has an abnormality according to the real-time state of the unit and the comparison result comprises:

[0019] when all switch signals are recorded as normal switch signals and all analog signals are recorded as normal analog signals, determining that the upgrading has no abnormality;

[0020] when there are to-be-determined signals, determining whether changes of all to-be-determined signals are normal phenomena according to the real-time state of the unit, and if so, determining that the upgrading has no abnormality, otherwise, determining that the upgrading has an abnormality; wherein the to-be-determined signals are to-be-determined switch signals or to-be-determined analog signals.

[0021] Preferably, in the S60, determining whether changes of all to-be-determined signals are normal phenomena according to the real-time state of the unit comprises:

[0022] for each to-be-determined signal, determining whether changes of the to-be-determined signal have a working condition abnormality according to the real-time state of the unit, and if so, determining that the changes of the to-be-determined signal are abnormal phenomena, otherwise, determining that the changes of the to-be-determined signal are normal phenomena; wherein the working condition abnormality comprises that a deviation of an analog signal obtained after updating of the to-be-determined signal from an actual value is not within a deviation range, and a signal value abnormality of a switch signal of an actuator.

[0023] Preferably, the S70 comprises:

[0024] generating abnormality warning information according to all to-be-determined signals; wherein the abnormality warning information comprises guidance suggestions for solving abnormalities of the to-be-determined signals.

[0025] Preferably, in the S70, the abnormal warning information is generated according to all the to-be-determined signals, comprising:

[0026] The abnormal warning information is generated according to the type and function of the to-be-determined signal, comprising: when the to-be-determined signal is an analog signal, setting the signal value of the upgraded analog signal as the current actual analog quantity corresponding to the analog signal; when the to-be-determined signal is a switch signal, setting the upgraded switch signal as the switch signal before upgrading or as the current actual setting value corresponding to the switch signal, or controlling the actuator controlled by the switch signal to be disabled or enter a manual mode, or disconnecting the cable transmitting the switch signal;

[0027] If yes, returning to the S30.

[0028] Preferably, the configuration data comprises at least one of hardwiring data, alternative data, input signal data, flip-flop storage data and voter state data.

[0029] The hardwiring data comprises a plurality of hardwiring signals for controlling the state of the actuator.

[0030] The alternative data comprises a plurality of alternative values for replacing the output signal of the sensor after the sensor fails.

[0031] The input signal data comprises a plurality of input signals for representing the working condition information of the unit.

[0032] The flip-flop storage data comprises a plurality of storage information of flip-flops.

[0033] The voter state data comprises a plurality of value logic information of voters.

[0034] Preferably, before the S10, further comprising: S01, in all the databases, setting one database which has not been upgraded as a to-be-upgraded database, and then executing the S10.

[0035] After the S8, further comprising: S90, judging whether all the databases have been upgraded, if yes, ending the upgrading work, otherwise, returning to the S01.

[0036] In addition, the application also constructs a processing device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the database upgrading method of the nuclear power plant reactor protection system.

[0037] In addition, the application also constructs a nuclear power plant reactor protection system comprising the processing device.

[0038] The implementation of the present application has the following advantages: a standardized automatic upgrade scheme is realized, the amount of manual operation of staff is significantly reduced, the upgrade period is shortened, the risk of human error is reduced, the upgrade and maintenance costs are reduced, and the operation process is simple and easy to operate, which plays a positive role in improving the safety of nuclear power plants. BRIEF DESCRIPTION OF DRAWINGS

[0039] The present application will be further described below in conjunction with the accompanying drawings and embodiments. In the drawings:

[0040] Figure 1 is a program flowchart of a database upgrade method of a nuclear power plant reactor protection system in some embodiments of the present application;

[0041] Figure 2 is a program flowchart of a comparison process of reading data and updating data in some embodiments of the present application;

[0042] Figure 3 is a program flowchart of a database upgrade method of a nuclear power plant reactor protection system in some embodiments of the present application;

[0043] Figure 4 is a circuit structure block diagram of a processing device in some embodiments of the present application. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0045] It should be noted that the flowchart shown in the accompanying drawings is only illustrative, and does not necessarily include all contents and operations / steps, nor does it necessarily execute in the order described. For example, some operations / steps can be further divided, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to the actual situation.

[0046] The block diagram shown in the accompanying drawings is only a functional entity, and does not necessarily correspond to a physically independent entity. That is, the functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0047] Figure 1 is a program flowchart of a database upgrade method of a nuclear power plant reactor protection system in some embodiments of the present application. The present application realizes a standardized automatic upgrade scheme by using a computer, which can significantly reduce the amount of manual operation of staff, shorten the upgrade period, reduce the risk of human error, reduce the upgrade and maintenance costs, and has the advantages of simple operation process and easy operation, which plays a positive role in improving the safety of nuclear power plants.

[0048] As shown in the figure, the database upgrading method of the nuclear power plant reactor protection system can include steps S10, S20, S30, S40, S50, S60, S70 and S80. Figure 1

[0049] Step S10 includes reading the configuration data of the database to be upgraded before upgrading, storing and recording as read data.

[0050] In some embodiments, the configuration data can include at least one of hardwired data, alternative data, input signal data, flip-flop storage data, and voter state data.

[0051] The hardwired data includes a plurality of hardwired signals for controlling the state of the actuator. Specifically, the actuator can include an electric pump, a valve, a heater, a fan, etc., and the hardwired signal can control the start or stop of the actuator.

[0052] The alternative data includes a plurality of alternative values for replacing the output signal of the sensor after the sensor fails. Specifically, taking a sensor as an example, when the sensor fails, the output signal of the sensor is abnormal, at which time the protection system will lock the output signal of the sensor to the alternative value in order to maintain the stable state of the unit.

[0053] The input signal data includes a plurality of input signals for characterizing the working condition information of the unit. Specifically, the working condition information of the unit can include the pressure and flow of the pipelines and pressure vessels, the temperature of the cooling water and the core, the speed of the turbine, etc., and the input signal is the sensing signal output by various sensors for sensing the working condition information.

[0054] The flip-flop storage data includes a plurality of storage information of flip-flops. Specifically, the flip-flop includes flip-flops such as RS flip-flops, and since the flip-flops are reset during database upgrading, the state initialization of the flip-flops will cause the output of the flip-flops to change, thereby affecting the state of the unit. In order to avoid the above situation, storing the storage information of all the flip-flops to be controlled is to prepare for the abnormal state of the unit after the initialization of the flip-flops after the database upgrading.

[0055] The voter state data includes a plurality of value logic information of the voters. Specifically, the value logic information of the voters is used to set the value logic of the voters, including the value logic such as two-out-of-three and four-out-of-two. Since there can be some failed sensors in the unit, the value logic of the corresponding voters needs to be set to avoid the influence of the signals of the failed sensors on the normal operation of the unit. Therefore, storing the value logic information of the voters can avoid the abnormal state of the unit caused by the abnormal value logic of the voters after upgrading.

[0056] ​Step S20 includes locking the unique command signals according to the real-time state of the nuclear power unit, so as to keep the state of the nuclear power unit stable.

[0057] It should be noted that the unique command signals are the unique commands of the nuclear power unit, and are important signals for keeping the state of the nuclear power unit stable. The unique command signals can include the locking signals of the control rods, the main pump and other key mechanisms. Taking the locking signal of the control rods as an example, when the nuclear power unit is shut down, all the control rods are inserted into the bottom of the reactor, at this time, the locking signal of the control rods is effective, and the locking signal of the control rods will also generate a series of locking commands, including not allowing the control rods to be lifted. However, during the database upgrading process, the locking and control data will be initialized, which causes the locking signal of the control rods to be invalid. Therefore, in order to keep the state of the nuclear power unit stable, the unique command signals need to be locked until the upgrading is completed.

[0058] The unique command signals stored in different databases are different, for example, the data of the locking signal of the control rods is stored in the database A, and the data of other unique command signals is stored in other databases. In order to improve the safety of the nuclear power unit during the upgrading process, in some embodiments, step S20 can further include determining the unique command signals that need to be locked according to the database to be upgraded. Taking the database A as an example, it is assumed that the database A only stores the related data of the locking signal of the control rods. Therefore, when the database A is upgraded, only the unique command signal of the control rods needs to be locked. Similarly, when the remaining databases are upgraded, only the unique command signals stored in the database to be upgraded need to be locked.

[0059] Step S30 includes upgrading the configuration signals in the database to be upgraded. In this step, the process of upgrading is to write the data set in advance into the database to be upgraded.

[0060] In order to avoid the abnormal database upgrading caused by the abnormal data writing, in some embodiments, step S30 can further include verifying whether the written data is normal during the upgrading process, and pausing the upgrading when the data is found to be abnormal. The data abnormality includes verifying whether the written digital signal is consistent with the regulation, for example, any bit in the data changes from “0” to “1” or from “1” to “0”, which belongs to the data abnormality. Further, after the upgrading is paused, step S30 can be re-executed according to the requirement, or the database can be continuously upgraded after the abnormal data is corrected.

[0061] Step S40 includes reading the configuration data of the upgraded database to be upgraded, and recording the read data as updated data.

[0062] Step S50 includes comparing the read data and the updated data, and obtaining a comparison result.

[0063] In some embodiments, the comparison result can be obtained by executing Figure 2The steps S501 to S504 shown are compared with the read data and the update data in S50.

[0064] Step S501 includes: according to the signal type, the read data and the update data are classified, and the read switch signal set, the read analog signal set, the update switch signal set and the update analog signal set are obtained. The signal type in the database includes analog signal and switch signal, the read switch signal set includes all switch signals in the read data, the read analog signal set includes all analog signals in the read data, the update switch signal set includes all switch signals in the update data, and the update analog signal set includes all analog signals in the update data. The purpose of this step is to prepare for improving the comparison efficiency of data.

[0065] Step S502 includes: the consistency between all functionally identical two switch signals in the read switch signal set and the update switch signal set is determined respectively, all switch signals with consistent signal values before and after the upgrade are recorded as normal switch signals, and all switch signals with inconsistent signal values before and after the upgrade are recorded as to-be-determined switch signals.

[0066] It should be noted that, since the update data is used to replace the update read data, that is, the update switch signal set includes a plurality of switch signals and a plurality of analog signals which are one-to-one corresponding and identical in function to all switch signals and all analog signals in the read data. It is easy to understand that this step will compare the two switch signals in the read switch signal set and the update switch signal set which are functionally identical in a one-to-one manner, to verify whether the signal values of the switch signals before and after the upgrade are consistent. The update switch signal set can be represented as: (Da1, Da2, … Dan), and the read switch signal set can be represented as: (Db1, Db2, … Dbn), n represents a positive integer. Among them, Dan (representing the switch signal after the upgrade) and Dbn (representing the switch signal before the upgrade) are functionally identical, so when comparing, the signal values of Da1 and Db1, Da2 and Db2, … Dan and Dbn are compared.

[0067] Step S503 includes: respectively determining the error size between all functionally identical two analog signals in the read analog signal set and the update analog signal set, recording all analog signals with errors within the corresponding allowable error range before and after the upgrade as normal analog signals, and recording all analog signals with errors not within the corresponding allowable error range before and after the upgrade as to-be-determined analog switch signals.

[0068] In the step, the read analog signal set can be represented as (Ab1, Ab2, …Abm), the updated analog signal set can be represented as (Aa1, Aa2, …Aam), Aam (representing the upgraded analog signal) has the same function as Abm (representing the analog signal before upgrading), m is a positive integer, and the error calculation process includes sequentially calculating the error between the analog quantities of Aa1 and Ab1, the error between the analog quantities of Aa2 and Ab2, and the error between the analog quantities of Aam and Abm. The formula for calculating the error is represented as: (Aam-Abm) / Abm*100%. Among them, the operating error range of different analog signals corresponding to different functions is different, and the smaller the allowed error range of the analog signal with greater impact on the safety and reliability of the nuclear power plant is, the smaller the allowed error range is.

[0069] Step S504 includes generating a comparison result according to all records. In the step, the comparison result contains the comparison results between all switch signals and the error analysis results between analog signals.

[0070] Step S60 includes determining whether the upgrade has an abnormality according to the real-time state of the unit and the comparison result. If yes, S70 is executed, otherwise S80 is executed.

[0071] In some embodiments, whether the upgrade has an abnormality can be determined by performing the following steps: when all switch signals in the updated data are recorded as normal switch signals and all analog signals are recorded as normal analog signals, it is determined that the upgrade has no abnormality; when there are to-be-determined signals in the updated data, it is determined according to the real-time state of the unit whether the changes of all to-be-determined signals are normal phenomena, and if yes, it is determined that the upgrade has no abnormality, otherwise it is determined that the upgrade has an abnormality; wherein the to-be-determined signal is a to-be-determined switch signal or a to-be-determined analog signal.

[0072] Further, in some embodiments, whether the changes of the to-be-determined signal are normal phenomena can be determined by performing the following steps: for each to-be-determined signal, it is determined according to the real-time state of the unit whether the change of the to-be-determined signal has a working condition abnormality, and if yes, it is determined that the change of the to-be-determined signal is an abnormal phenomenon, otherwise it is determined that the change of the to-be-determined signal is a normal phenomenon; wherein the working condition abnormality includes that the deviation of the analog signal obtained after updating the to-be-determined signal from the actual value is not within the deviation range, and the signal value of the switch signal of the actuator is abnormal, etc.

[0073] Specifically, since each database upgrade process generally lasts between 5 minutes to 15 minutes, and during this period, the actual working condition of the unit may change, in some cases, the signal change before and after the upgrade is normal, for example, the coolant temperature changes, the corresponding temperature analog signal should also respond accordingly, if the temperature represented by the temperature analog signal after the upgrade deviates from the actual temperature within the allowable deviation range (the deviation range is a standard prepared in advance by the nuclear power plant), it will be determined to be a normal phenomenon, if the temperature analog signal after the upgrade deviates from the actual temperature, it will be determined that the change is abnormal. For example, the abnormal power distribution panel of a certain device or actuator needs to start the standby power supply function, then the signal value of the switch signal corresponding to the abnormal power distribution panel and the started standby power supply is flipped (i.e. signal value abnormality) also belongs to the normal scene. Further, the worker can read the real-time value of the to-be-determined signal through the control system (such as the DCS system) to determine whether the change belongs to a normal phenomenon.

[0074] Step S70 includes generating an abnormality warning information. In this step, the abnormality warning information is used to remind the worker to handle the abnormality.

[0075] In order to improve the effect of handling the abnormality, in some embodiments, S70 can include: generating the abnormality warning information according to all the to-be-determined signals; wherein the abnormality warning information includes the guidance suggestion for solving the abnormality of each to-be-determined signal.

[0076] Further, the abnormality warning information can be generated according to all the to-be-determined signals by performing the following steps: generating the abnormality warning information according to the type and function of the to-be-determined signal, including: when the to-be-determined signal is an analog signal, setting the upgraded analog signal to the current analog quantity corresponding to the analog signal; when the to-be-determined signal is a switch signal, setting the upgraded switch signal to the switch signal before the upgrade or to the current actual set value corresponding to the switch signal, or controlling the actuator controlled by the switch signal to be invalid or enter a manual mode, or disconnecting the cable transmitting the switch signal; returning to S30 if the abnormality elimination instruction is obtained.

[0077] In this embodiment, the current analog quantity corresponding to the analog signal and the current actual value corresponding to the switch signal can be obtained from the control system. How the switch signal determines the prompt information should be determined based on the specific function of the equipment or actuator. For example, if the drive circuit of an electric valve fails, the entire drive circuit of the electric valve can be directly controlled to fail (e.g., cutting off the power supply to the electric valve), thereby preventing the electric valve from malfunctioning. If a power supply channel of the distribution panel fails, the distribution panel can be controlled to enter manual mode to disconnect the faulty power supply channel, allowing other normal power supply channels to operate normally and preventing the impact from spreading. Furthermore, if a sensor fails, the signal transmission cable of the switch signal controlling the sensor's enable function can be disconnected to prevent the failed sensor from malfunctioning and causing error information to be fed back to the control system.

[0078] Step S80 includes: unlocking the unique command signal. After unlocking the unique command signal, it is equivalent to the database to be upgraded having completed the upgrade, so the CPU corresponding to the database can communicate with the database, and the CPU resumes normal operation.

[0079] To improve traceability, in some embodiments, step S80 may further include: storing read data, updating data, and updating the modification log of all switch signals and analog signals in the data.

[0080] Because the number of databases requiring upgrades is large, in order to improve upgrade efficiency, in some embodiments, such as... Figure 3 As shown, before S10, it also includes: S01, in all databases, designate the database that has not been upgraded as the database to be upgraded, and then execute S10; correspondingly, after S8, it also includes: S90, determine whether all databases have been upgraded, if so, end the upgrade work, otherwise return to S01.

[0081] like Figure 4 As shown, the present invention also provides a processing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the database upgrade method for the nuclear power plant reactor protection system provided in the embodiments of the present invention.

[0082] The present invention also provides a nuclear power plant reactor protection system, including the processing equipment provided in the embodiments of the present invention.

[0083] Understandably, this invention can utilize computer programming languages ​​to write automated scripts to achieve standardized automatic database upgrades, significantly reducing manual operations by staff, shortening upgrade cycles, reducing the risk of human error, and lowering upgrade and maintenance costs. It also has the advantages of simple operation procedures and ease of use, and can ensure that the data before and after the upgrade meets the operating requirements of the nuclear power plant unit, ensuring the safety of the upgrade process and playing a positive role in improving the safety of nuclear power plants.

[0084] The various embodiments described in this specification are presented by way of example, and each embodiment describes a specific feature or combination of features that can be included in one or more embodiments of the present application. Each embodiment is intended to be limiting only to the extent recited in the specific embodiment description. In addition, any feature described in relation to one embodiment can be combined with any other feature described in relation to any other embodiment.

[0085] Those skilled in the art will further appreciate that the units and algorithms described in the examples presented herein can be implemented in electronic hardware, computer software, or any combination thereof. To clearly illustrate this interchangeability of hardware and software, various components will be described herein generally in terms of their functionality, without reference to the particular manner in which they are implemented. As used herein, a processor can include one or more processors, and a memory can include one or more memories. Those skilled in the art will recognize how best to implement the described functionality for the particular application along with the related computing device.

[0086] Those skilled in the art will further appreciate that the units and algorithms described in the examples presented herein can be implemented in electronic hardware, computer software, or any combination thereof. To clearly illustrate this interchangeability of hardware and software, various components will be described herein generally in terms of their functionality, without reference to the particular manner in which they are implemented. As used herein, a processor can include one or more processors, and a memory can include one or more memories. Those skilled in the art will recognize how best to implement the described functionality for the particular application along with the related computing device.

[0087] It can be understood that the above-described embodiments are merely preferred implementations of the present application, and the description is more specific and detailed, but it should not be understood as a limitation to the scope of the patent of the present application; it should be pointed out that, for those skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some modifications and improvements can be made, which are all within the scope of protection of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall be covered by the claims of the present application.

Claims

1. A method for database upgrade of a nuclear power plant reactor protection system, characterized in that, The method comprises the following steps: S10, reading configuration data of a database to be upgraded before upgrading, storing and recording as read data; S20, locking a specific command signal according to a real-time state of a unit, so as to keep the unit state stable; S30, upgrading configuration signals in the database to be upgraded; S40, reading configuration data of the database to be upgraded after upgrading, and recording as updated data; S50, comparing the read data and the updated data to obtain a comparison result; S60, determining whether there is an abnormality in upgrading according to the real-time state of the unit and the comparison result, if yes, executing S70, otherwise executing S80; S70, generating an abnormal warning information; S80, unlocking the specific command signal.

2. The database upgrade method of a nuclear power plant reactor protection system according to claim 1, characterized by, In the S50, the comparison of the read data and the updated data comprises: classifying the read data and the updated data according to signal types to obtain a read switch signal set, a read analog signal set, an updated switch signal set and an updated analog signal set; determining consistency between all functionally identical two switch signals in the read switch signal set and the updated switch signal set respectively, recording all switch signals with consistent signal values before and after upgrading as normal switch signals, and recording all switch signals with inconsistent signal values before and after upgrading as to-be-determined switch signals; determining error sizes between all functionally identical two analog signals in the read analog signal set and the updated analog signal set respectively, recording all analog signals with errors kept within a corresponding error range before and after upgrading as normal analog signals, and recording all analog signals with errors not within the corresponding error range before and after upgrading as to-be-determined analog signals; generating a comparison result according to all records.

3. The database upgrade method of a nuclear power plant reactor protection system according to claim 2, characterized by, In the S60, the determination of whether there is an abnormality in upgrading according to the real-time state of the unit and the comparison result comprises: when all switch signals are recorded as normal switch signals and all analog signals are recorded as normal analog signals, it is determined that there is no abnormality in upgrading; when there is a to-be-determined signal, it is determined according to the real-time state of the unit whether changes of all to-be-determined signals are normal phenomena, if yes, it is determined that there is no abnormality in upgrading, otherwise it is determined that there is an abnormality in upgrading; wherein the to-be-determined signal is a to-be-determined switch signal or a to-be-determined analog signal.

4. The database upgrade method of a nuclear power plant reactor protection system according to claim 3, characterized by, In the S60, the determination of whether changes of all to-be-determined signals are normal phenomena according to the real-time state of the unit comprises: for each to-be-determined signal, it is determined according to the real-time state of the unit whether changes of the to-be-determined signal have a working condition abnormality, if yes, it is determined that the changes of the to-be-determined signal are abnormal phenomena, otherwise it is determined that the changes of the to-be-determined signal are normal phenomena; wherein the working condition abnormality includes that a deviation of an analog signal obtained after updating of the to-be-determined signal from an actual value is not within a deviation range, and a signal value of a switch signal of an actuator is abnormal.

5. The database upgrade method of a nuclear power plant reactor protection system according to claim 4, characterized by, The S70 comprises: generating an abnormal warning information according to all to-be-determined signals; wherein the abnormal warning information includes guidance suggestions for solving abnormalities of the to-be-determined signals.

6. The database upgrade method of a nuclear power plant reactor protection system according to claim 5, characterized by, In the S70, the abnormal alarm information is generated according to all the to-be-determined signals, including: The abnormal alarm information is generated according to the type and function of the to-be-determined signal, including: when the to-be-determined signal is an analog signal, the signal value of the upgraded analog signal is set as the current actual analog quantity corresponding to the analog signal; when the to-be-determined signal is a switch signal, the upgraded switch signal is set as the switch signal before upgrading or the current actual setting value corresponding to the switch signal, or the actuator controlled by the switch signal is disabled or enters a manual mode, or the cable transmitting the switch signal is disconnected; If yes, the method returns to the S30.

7. The database upgrade method of a nuclear power plant reactor protection system according to Claim 1, characterized by, The configuration data includes at least one of hardwired data, alternative data, input signal data, flip-flop storage data and voter state data; The hardwired data includes a plurality of hardwired signals for controlling the state of the actuator; The alternative data includes a plurality of alternative values for replacing the output signal of the sensor after the sensor fails; The input signal data includes a plurality of input signals for representing the working condition information of the unit; The flip-flop storage data includes storage information of a plurality of flip-flops; The voter state data includes value logic information of a plurality of voters.

8. The database upgrade method of a nuclear power plant reactor protection system according to any one of claims 1 to 7, characterized by, Before the S10, the method further includes: S01, in all databases, one database that has not been upgraded is determined as a to-be-upgraded database, and then the S10 is executed; After the S8, the method further includes: S90, judging whether all databases are upgraded, if yes, ending the upgrading work, otherwise, returning to the S01.

9. A processing device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the database upgrading method of the nuclear power plant reactor protection system according to any one of claims 1 to 8.

10. A nuclear power plant reactor protection system characterized by, The processing device according to claim 9. The processing device according to claim 9.

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