Method and device for boron injection and water injection for reactor power ramping

Abstract

The present disclosure belongs to the technical field of nuclear power, and particularly relates to a reactor power-lifting boron injection and water injection method and device. The reactor power-lifting boron injection and water injection method of the present disclosure simulates calculation through real-time acquisition of actual parameters of a unit reactor, continuously fine-tunes the burnup days, controls the generated critical boron concentration to be consistent with the actual boron concentration, monitors the simulated power trend, timely replaces the power calculation mode, effectively guarantees the convergence of the reactor axial power distribution trend, and prevents the reactor axial power from exceeding the limit. Thus, the operation amount of water injection and boron injection can be accurately determined in a timely manner according to the actual situation of the unit reactor, the number of operation operations is reduced, the situation of unstable nuclear reactivity is avoided, and the reliability of green energy power output is increased. In actual application, it is found through comparison of the calculated value and the actual value that the calculation result of the present disclosure is consistent with the actual result, the number of operation operations is effectively reduced, and the situation of unstable nuclear reactivity is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of nuclear power, and particularly relates to a method and device for boron injection and water injection for power up and down of a reactor. BACKGROUND

[0002] The power up and down of a reactor in a VVER1000 nuclear power plant is achieved by injecting clean water or boron water, and the injection of clean water or boron water needs to be performed according to a corresponding unit condition reference data table. The table lookup method in the related art has a large error and does not consider the influence of real-time change factors (for example, xenon poisoning) of the reactor, which may lead to over-injection or under-injection of clean water or boron water, increase the operation frequency and burden of the reactor operator, and easily cause unstable nuclear reactivity. In view of the above situation, it is urgent to more accurately determine the clean water injection amount and the boron water injection amount to reduce the operation frequency and avoid unstable nuclear reactivity. SUMMARY

[0003] To overcome the problems in the related art, a method and device for boron injection and water injection for power up and down of a reactor are provided.

[0004] According to an aspect of an embodiment of the present disclosure, a method for boron injection and water injection for power up and down of a reactor is provided, and the method comprises the following steps.

[0005] Step 1, obtaining current parameters of a nuclear power plant unit and synchronizing the obtained current parameters as calculation parameters of a reactor simulator, wherein the current parameters include current burnup days, reactor boron concentration, rod position, primary loop pressure, power and core inlet temperature of the nuclear power plant unit;

[0006] Step 2, controlling the reactor simulator to start calculation, generating a critical boron concentration, and comparing whether the generated critical boron concentration is consistent with the current reactor boron concentration of the unit;

[0007] Step 3, if the generated critical boron concentration is not consistent with the current reactor boron concentration of the unit, changing the burnup days of the reactor simulator, and controlling the reactor simulator to calculate a new critical boron concentration;

[0008] Step 4, repeating step 3 until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit;

[0009] Step 5, controlling the reactor simulator to perform power up and down iteration calculation in a first preset step size in a boron concentration mode, setting a power rate as a change rate required in a reactor specification, and performing the calculation until the determined reactor power reaches a target power and the reactor axial power distribution shows a convergence trend;

[0010] Step 6, if the reactor axial power distribution presents a divergent trend after repeated calculation in step 5, the reactor simulator is controlled to perform the up-down power iterative calculation in the rod control mode with a second preset step length until the determined reactor power reaches the target power;

[0011] Step 7, in the case where the determined reactor power reaches the target power, the initial state critical boron concentration and the final state critical boron concentration output by the reactor simulator are obtained;

[0012] Step 8, the required boron injection amount or water injection amount is determined according to the determined initial state critical boron concentration and the final state critical boron concentration.

[0013] In a possible implementation, the first preset step length is set to 10-15 min, and the second preset step length is set to 1-2 min.

[0014] According to another aspect of the embodiments of the present disclosure, a reactor up-down power boron injection and water injection device is provided, which comprises:

[0015] A synchronization module is configured to obtain current parameters of a nuclear power plant unit and synchronize the obtained current parameters as calculation parameters of a reactor simulator, wherein the current parameters include the current burnup days, the reactor boron concentration, the rod position, the primary loop pressure, the power and the core inlet temperature of the nuclear power plant unit;

[0016] A calculation judgment module is configured to control the reactor simulator to start calculation, generate a critical boron concentration, and compare whether the generated critical boron concentration is consistent with the current reactor boron concentration of the unit;

[0017] A first adjustment module is configured to change the burnup days of the reactor simulator in the case where the generated critical boron concentration is not consistent with the current reactor boron concentration of the unit, and control the reactor simulator to calculate a new critical boron concentration;

[0018] A first execution module is configured to repeatedly execute the first adjustment module until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit;

[0019] A second adjustment module is configured to control the reactor simulator to perform the up-down power iterative calculation in the boron concentration mode with a first preset step length, set the power rate as a required change rate in the reactor specification, until the determined reactor power reaches the target power, and the reactor axial power distribution presents a convergent trend;

[0020] A third adjustment module is configured to control the reactor simulator to perform the up-down power iterative calculation in the rod control mode with a second preset step length in the case where the reactor axial power distribution presents a divergent trend after repeated calculation in the second adjustment module, until the determined reactor power reaches the target power.

[0021] an acquisition module configured to acquire an initial-state critical boron concentration and a final-state critical boron concentration output by the reactor simulator;

[0022] a conversion module configured to determine a required boron injection amount or water injection amount according to the determined initial-state critical boron concentration and the final-state critical boron concentration.

[0023] In a possible implementation, the first preset step length is set to 10-15 min, and the second preset step length is set to 1-2 min.

[0024] According to another aspect of the embodiments of the present disclosure, a reactor power-up and power-down boron injection and water injection device is provided, which comprises:

[0025] a processor;

[0026] a memory for storing processor-executable instructions;

[0027] The processor is configured to execute the above method.

[0028] According to another aspect of the embodiments of the present disclosure, a non-volatile computer-readable storage medium is provided, which stores computer program instructions, and the computer program instructions are executed by a processor to implement the above method.

[0029] The reactor power-up and power-down boron injection and water injection method of the present disclosure has the following beneficial effects: the method of the present disclosure performs simulation calculation by acquiring actual parameters of a unit reactor in real time, controls the generated critical boron concentration to be consistent with the actual boron concentration by continuously fine-tuning the burnup days, and effectively guarantees the convergence of the reactor axial power distribution trend and prevents the reactor axial power from exceeding the limit by timely replacing the power calculation mode, thereby being able to accurately determine the operation amount of water injection and boron injection according to the actual situation of the unit reactor in a timely manner, thereby reducing the number of operation operations and avoiding the occurrence of nuclear reactivity instability, and increasing the reliability of green energy power output. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a flowchart of a reactor power-up and power-down boron injection and water injection method according to the present disclosure.

[0031] Figure 2 is a block diagram of a reactor power-up and power-down boron injection and water injection device according to the present disclosure.

[0032] Figure 3 is a block diagram of a reactor power-up and power-down boron injection and water injection device according to the present disclosure. DETAILED DESCRIPTION

[0033] The present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 is a flow chart of a reactor power-lift boron injection and water injection method shown in the present disclosure. The method can be executed by a terminal device, where the terminal device can be a server, a desktop computer, a notebook computer, a tablet computer, etc., and the terminal device can also be, for example, a user equipment, a vehicle-mounted device, or a wearable device, etc., and the type of the terminal device is not limited in the embodiments of the present disclosure. As shown in the figure, the method comprises: Figure 1

[0035] Step 1, obtaining the current parameters of the nuclear power plant unit, and synchronizing the obtained current parameters as the calculation parameters of the reactor simulator, wherein the current parameters include the current burnup days, the reactor boron concentration, the rod position, the primary loop pressure, the power and the core inlet temperature of the nuclear power plant unit.

[0036] Step 2, controlling the reactor simulator to start calculation, generating the critical boron concentration, and comparing whether the generated critical boron concentration is consistent with the current reactor boron concentration of the unit.

[0037] Step 3, if the generated critical boron concentration is not consistent with the current reactor boron concentration of the unit, changing the burnup days of the reactor simulator, and controlling the reactor simulator to calculate to generate a new critical boron concentration.

[0038] Step 4, repeating step 3 until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit.

[0039] For example, in step 1, the terminal device can obtain the current burnup days and the current reactor boron concentration of the unit, and set them in the original file data of the reactor simulator. Then, the terminal device can run the reactor simulator in interactive mode. And control the reactor simulator to calculate in offline steady state mode. The terminal device can control the rod position, the primary loop pressure, the power and the core inlet temperature of the reactor simulator main interface to be consistent with the unit parameters.

[0040] In steps 2 and 3, the terminal device can set the total running time to 0 mim to make the simulation state of the reactor simulator consistent with the current reactor state of the unit, and then the terminal device controls the reactor simulator to start calculation to generate the critical boron concentration. If the terminal device compares the deviation between the generated critical boron concentration and the current boron concentration is greater than a preset threshold, it can repeatedly modify the burnup days to generate a new critical boron concentration, until the deviation between the generated critical boron concentration and the current boron concentration of the unit is less than the preset threshold.

[0041] ​In a possible implementation, the reactor simulator can also be built into the terminal device as a functional module, or can be arranged in other devices, and the terminal device can control the reactor simulator to perform a calculation task through communication scheduling. In addition, it should be noted that a reactor simulator of a suitable type can be selected as needed to perform reactor simulation calculation, and the type of reactor simulator is not limited in the present disclosure.

[0042] Step 5, the control reactor simulator adopts a boron concentration mode (Bor) to perform a power iteration calculation, the iteration step is set to 10-15 min (an example of the first preset step), and the power rate is set to the change rate required in the reactor specification, until the determined reactor power reaches the target power, and the reactor axial power (AO for short) distribution presents a convergence trend, wherein the step of 10-15 min can effectively ensure the calculation accuracy, and can effectively prevent the reactor axial power distribution from being out of limit.

[0043] Step 6, if the reactor axial power distribution obtained by repeated calculation in step 5 presents a divergence trend, the control reactor simulator is changed to adopt a rod control mode (CPS CR) to perform a power iteration calculation, the rod control mode (CPS CR) is simulated to lower the power by inserting a rod, and the calculation step is set to 1-2 min (an example of the second preset step), thereby the reactor axial power distribution can be controlled until the determined reactor power reaches the target power.

[0044] Step 7, in the case where the determined reactor power reaches the target power, the initial state critical boron concentration and the final state critical boron concentration output by the reactor simulator are obtained.

[0045] For example, the terminal device can obtain the initial / final state critical boron concentration value in the res folder protokol.dat document corresponding to the reactor simulator.

[0046] Step 8, the boron injection amount or water injection amount required is determined according to the initial state critical boron concentration and the final state critical boron concentration. For example, the boron injection amount or water injection amount required can be determined by the following formula (when the boron injection concentration is 0 g / kg, the water injection amount is obtained), a = V x ln[(C2-C0) / (C2-C1)], wherein a is the water or boron amount, V is the water volume of the reactor primary loop, C2 is the boron injection concentration, C0 is the initial state critical boron concentration, and C1 is the final state critical boron concentration. It should be noted that a suitable conversion formula (for example, different weights are added at different positions in the formula) can be used to determine the boron injection amount or water injection amount required, and the specific form of the conversion formula is not limited in the present disclosure.

[0047] The reactor power injection boron and water injection method of the present disclosure can simulate calculation by acquiring actual parameters of the reactor of the unit in real time, control the generated critical boron concentration to be consistent with the actual boron concentration by continuously fine-tuning the burnup days, monitor the simulated power trend, and timely replace the power calculation mode to effectively guarantee the convergence of the axial power distribution trend of the reactor and prevent the axial power of the reactor from exceeding the limit. Thus, the operation amount of water injection and boron injection can be accurately determined in a timely manner according to the actual situation of the reactor of the unit, the number of operation operations is reduced, the situation of unstable nuclear reactivity is avoided, and the reliability of green energy power output is increased. In actual application, it is found through comparison of the calculated value and the actual value that the calculation result of the present disclosure is consistent with the actual value, the number of operation operations is effectively reduced, and the situation of unstable nuclear reactivity is avoided.

[0048] In a possible implementation, a reactor power injection boron and water injection device is provided, and the device comprises:

[0049] A synchronization module is configured to acquire current parameters of the unit of the nuclear power plant and synchronize the acquired current parameters as calculation parameters of the reactor simulator, wherein the current parameters include the current burnup days, the reactor boron concentration, the rod position, the primary loop pressure, the power, and the core inlet temperature of the unit of the nuclear power plant.

[0050] A calculation and judgment module is configured to control the reactor simulator to start calculation, generate a critical boron concentration, and compare whether the generated critical boron concentration is consistent with the current reactor boron concentration of the unit.

[0051] A first adjustment module is configured to change the burnup days of the reactor simulator in a case where the generated critical boron concentration is inconsistent with the current reactor boron concentration of the unit, control the reactor simulator to calculate a new critical boron concentration.

[0052] A first execution module is configured to repeatedly execute the first adjustment module until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit.

[0053] A second adjustment module is configured to control the reactor simulator to perform power iteration calculation in a boron concentration mode with a first preset step size, set the power rate to a change rate required in the specification of the reactor, and perform the calculation until the determined reactor power reaches a target power and the axial power distribution of the reactor presents a convergence trend.

[0054] A third adjustment module is configured to control the reactor simulator to perform power iteration calculation in a rod control mode with a second preset step size in a case where the axial power distribution of the reactor obtained by repeatedly calculating the second adjustment module presents a divergence trend, and perform the calculation until the determined reactor power reaches a target power.

[0055] The acquisition module is configured to acquire the initial state critical boron concentration and the final state critical boron concentration output by the reactor simulator.

[0056] The conversion module is configured to determine the required boron injection amount or water injection amount according to the determined initial state critical boron concentration and the final state critical boron concentration.

[0057] In a possible implementation, the first preset step length is set to 10-15 min, and the second preset step length is set to 1-2 min.

[0058] The above description of the device has been described in detail in the description of the above method, and will not be repeated here.

[0059] Figure 2 is a block diagram of a reactor power-up boron injection and water injection device shown in the present disclosure. For example, the device 800 can be a mobile phone, a computer, a digital broadcast terminal, a messaging equipment, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0060] Referring to Figure 2 , the device 800 can include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0061] The processing component 802 generally controls the overall operation of the device 800, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 802 can include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned device. In addition, the processing component 802 can include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0062] The memory 804 is configured to store various types of data to support the operation of the device 800. Examples of these data include instructions for operating any application or device on the device 800, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage devices or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0063] Power component 806 provides power to the various components of device 800. Power component 806 can include a power supply management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 800.

[0064] Multimedia component 808 includes a screen providing an output interface between device 800 and a user. In some embodiments, the screen includes a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When device 800 is in an operation mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each of the front-facing camera and the rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0065] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) that is configured to receive external audio signals when device 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0066] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, which can be a keyboard, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0067] The sensor component 814 includes one or more sensors for providing status assessments for various aspects of the device 800. For example, the sensor component 814 can detect an open / closed status of the device 800, relative positioning of components, such as a display and keypad of the device 800, a change in position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration / deceleration of the device 800, and a temperature change of the device 800. The sensor component 814 can include proximity sensor(s) configured to detect the presence of objects in a proximity without any physical contact. The sensor component 814 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 814 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0068] The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and another device. The device 800 can access a wireless network based on a corresponding communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 816 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0069] In an example embodiment, the device 800 can be implemented using one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, other electronic units, or a combination thereof, to perform the methods described above.

[0070] In an example embodiment, a non-transitory computer-readable storage medium, such as the memory 804 including computer program instructions, is also provided, which can be executed by the processor 820 of the device 800 to perform the methods described above.

[0071] Figure 3 is a block diagram of a reactor power ramping boron injection and water injection apparatus shown in the present disclosure. For example, the apparatus 1900 can be provided as a server. Referring to Figure 3The apparatus 1900 also includes a processing assembly 1922, which is configured to perform the methods described above, and a memory 1932, which is configured to store the instructions executable by the processing assembly 1922. The memory 1932 can include one or more modules each corresponding to a set of instructions. The processing assembly 1922 is configured to execute the instructions to perform the methods described above.

[0072] The apparatus 1900 can also include a power supply assembly 1926 configured to perform power management for the apparatus 1900, a wired or wireless network interface 1950 configured to connect the apparatus 1900 to a network, and an input output (I / O) interface 1958. The apparatus 1900 can operate based on an operating system stored in the memory 1932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0073] In exemplary embodiments, a non-transitory computer readable storage medium, such as the memory 1932 including computer program instructions stored therein, is also provided, which can be executed by the processing assembly 1922 of the apparatus 1900 to complete the methods described above.

[0074] The present disclosure can be a system, a method, and / or a computer program product. The computer program product can include a computer readable storage medium (or media) having computer readable program instructions thereon for causing a processor to carry out aspects of the present disclosure.

[0075] The computer readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device. The computer readable storage medium can be, for example, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium include the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanically encoded device such as punch-cards or punched tape, a magnetically encoded device such as magnetic strip cards, an optically encoded device such as a compact disc (CD) or DVD, and / or any suitable combination of the foregoing. A computer readable storage medium, as used herein, is not to be construed as being transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission media (e.g., light pulses passing through a fiber-optic cable), or electrical signals transmitted through a wire.

[0076] Computer readable program instructions described herein can be downloaded to respective computing / processing devices from a computer readable storage medium or to an external computer or external storage device via a network, for example, the Internet, a local area network, a wide area network and / or a wireless network. The network can comprise copper transmission cables, optical transmission fibers, wireless transmission, routers, firewalls, switches, gateway computers and / or edge servers. A network adapter card or network interface in each computing / processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium within the respective computing / processing device.

[0077] Computer readable program instructions for carrying out operations of the present disclosure can be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions can execute entirely on the user's computing device, partly on the user's computing device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, for example, through the Internet using an Internet Service Provider. In some embodiments, electronic circuitry including, for example, programmable logic circuitry, field-programmable gate arrays (FPGA), or programmable logic arrays (PLA) can execute the computer readable program instructions by utilizing state information of the computer readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present disclosure.

[0078] The computer readable program instructions can also be loaded onto a computing / processing device, other programmable data processing apparatus, or other device to cause a series of operations to be performed on the computing / processing device, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computing / processing device, other programmable apparatus, or other device implement the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0079] These computer readable program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks. These computer readable program instructions can also be stored in a computer readable storage medium that can include a non-transitory computer readable storage medium that can be a computer- readable storage medium having no data storage cycles that change state. The instructions can be executed by one or more processors of a computer, to cause a series of operational steps to be performed on the computer to produce a computer-implemented process. The instructions can also cause one or more processors of a computer or other programmable data processing apparatus to

[0080] The computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable data processing apparatus, or other device implement the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0081] The computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable data processing apparatus, or other device implement the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0082] Embodiments of the present disclosure have been described above, and the description is intended to be illustrative of the embodiments and not restrictive of the disclosure. Many modifications and variations of the described embodiments are possible in light of this disclosure. It is intended that the scope of the disclosure be limited not by this detailed description, but rather by the claims appended hereto. The choice of words in the description is intended to be a choice of emphasis on features deemed to be key in expressing the principles of the present disclosure. Other words can be substituted therefor without departing from the essence of the disclosure.

Claims

1. A method for injecting boron and water to increase or decrease reactor power, characterized in that: The method comprises: Step 1: Obtain the current parameters of the nuclear power plant unit and synchronize them with the calculation parameters of the reactor simulator. The current parameters include the current burnup days of the nuclear power plant unit, reactor boron concentration, rod position, primary circuit pressure, power, and core inlet temperature. Step 2: Control the reactor simulator to start calculation, generate a critical boron concentration, and compare the generated critical boron concentration with the current reactor boron concentration of the unit to see if they are consistent; Step 3: If the generated critical boron concentration is inconsistent with the current reactor boron concentration of the unit, the burnup days of the reactor simulator are changed, and the reactor simulator is controlled to calculate and generate a new critical boron concentration; Step 4, repeating step 3 until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit; Step 5: Controlling the reactor simulator to perform iterative calculations of power ramping using a boron concentration mode with a first preset step size, setting the power rate to the rate of change required by the reactor specification, until the determined reactor power reaches the target power and the reactor axial power distribution shows a convergence trend; Step 6: If the reactor axial power distribution obtained by repeated calculations in step 5 shows a divergent trend, the reactor simulator is controlled to change to a rod control mode to perform power up and down iterative calculations with a second preset step size until the determined reactor power reaches the target power; Step 7: When the determined reactor power reaches the target power, obtain the initial state critical boron concentration and the final state critical boron concentration output by the reactor simulator; Step 8: Determine the required boron injection amount or water injection amount based on the critical boron concentration in the initial state and the critical boron concentration in the final state.

2. The method according to claim 1, characterized in that The first preset step is set to 10~15 minutes, and the second preset step is set to 1~2 minutes.

3. A boron and water injection device for raising and lowering reactor power, characterized in that: The device comprises: A synchronization module is used to obtain the current parameters of the nuclear power plant unit and synchronize the obtained current parameters with the calculation parameters of the reactor simulator, where the current parameters include the current burnup days of the nuclear power plant unit, reactor boron concentration, rod position, primary circuit pressure, power and core inlet temperature; The calculation and judgment module is used to control the reactor simulator to start calculation, generate a critical boron concentration, and compare the generated critical boron concentration with the current reactor boron concentration of the unit to see whether it is consistent; The first adjustment module is used to change the burnup days of the reactor simulator when the generated critical boron concentration is inconsistent with the current reactor boron concentration of the unit, and control the reactor simulator to calculate and generate a new critical boron concentration; a first execution module, configured to repeatedly execute the first adjustment module until the generated critical boron concentration is consistent with the current reactor boron concentration of the unit; a second adjustment module, configured to control the reactor simulator to perform iterative calculations of power ramping with a first preset step size using a boron concentration mode, setting the power rate to a rate of change required by the reactor regulations, until the determined reactor power reaches the target power and the reactor axial power distribution shows a convergence trend; a third adjustment module configured to control the reactor simulator to adopt a rod control mode to perform iterative power increase and decrease calculations with a second preset step size until the determined reactor power reaches the target power when the reactor axial power distribution obtained by repeated calculations by the second adjustment module shows a divergent trend; An acquisition module, used for acquiring an initial critical boron concentration and a final critical boron concentration output by a reactor simulator; The conversion module is used to determine the required boron injection amount or water injection amount according to the critical boron concentration in the initial state and the critical boron concentration in the final state.

4. The device according to claim 3, characterized in that The first preset step is set to 10~15 minutes, and the second preset step is set to 1~2 minutes.

5. A boron and water injection device for raising and lowering reactor power, characterized in that: The device comprises: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method of claim 1 or 2.

6. A non-volatile computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to claim 1 or 2 is implemented.

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