CN117012410A

CN117012410A - Pressurized water reactor core control method, device, computer equipment and storage medium

Info

Publication number: CN117012410A
Application number: CN202210465236.7A
Authority: CN
Inventors: 王欣欣; 卢向晖; 蔡德昌; 何明涛; 徐昌恒; 付学峰; 韩嵩
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; China Nuclear Power Engineering Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; China Nuclear Power Engineering Co Ltd; CGN Power Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-07

Abstract

The application relates to a pressurized water reactor core control method, a pressurized water reactor core control device, a computer device, a storage medium and a computer program product. The method comprises the following steps: acquiring an operation mode of a pressurized water reactor core; according to the operation mode, determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes; the first control bar set, the second control bar set, and the third control bar set are controlled based on the target control pattern. The method can meet various adjustment requirements of the pressurized water reactor core and can improve the operation flexibility of the nuclear power unit.

Description

Pressurized water reactor core control method, device, computer equipment and storage medium

Technical Field

The present application relates to the field of control technology, and in particular, to a pressurized water reactor core control method, apparatus, computer device, storage medium, and computer program product.

Background

With the development of control technology, the core control modes of the pressurized water nuclear reactor are single, and mainly include the following two types: first, adjusting boron concentration in the primary coolant to alter core reactivity; second, the boron concentration in the primary coolant is adjusted to alter the core reactivity. The first reactor power regulation means requires the dilution or boration of the coolant by injection of water or high concentration boron solution into a loop by a capacity control system. Because the primary coolant needs a certain time to be uniformly mixed after each dilution or boride, the primary coolant has slower change speed of boron concentration and slower power adjustment of the reactor. In addition, when the reactor power needs to be frequently raised and lowered, if such raising and lowering is tracked solely by adjusting the boron concentration, frequent dilution and boration of the primary coolant is performed, which results in a large amount of boron solution to be recovered. The second reactor power adjusting means adjusts the reactor power by controlling the movement of the rods in the reactor core, and has the advantages of higher system response speed; however, under the power operation condition, the control rod moves in the reactor core to cause the distortion of the axial power distribution of the reactor core, so that the problems of unbalanced axial nuclear fuel consumption degree of the reactor core and the like are caused, and therefore, a series of constraints exist for adjusting the power of the reactor by using the control rod. Therefore, various adjustment requirements of the pressurized water reactor core under different load operation cannot be met in a single control mode.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a pressurized water reactor core control method, apparatus, computer device, computer readable storage medium, and computer program product that can provide different pressurized water reactor cores for different regulatory requirements.

In a first aspect, the present application provides a pressurized water reactor core control method. The method comprises the following steps:

acquiring an operation mode of a pressurized water reactor core;

determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode;

the first control bar set, the second control bar set, and the third control bar set are controlled based on the target control pattern.

In one embodiment, the operation mode of the obtained pressurized water reactor core includes:

acquiring operation information of a pressurized water reactor core;

and determining the operation mode of the pressurized water reactor core according to the operation information.

In one embodiment, the operating mode is a load change operating mode; the determining, according to the operation mode, a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes includes:

And determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the load regulation condition.

In one embodiment, the determining, according to the load change operation mode, a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes includes:

acquiring a control mode instruction;

the load change operation mode determines a target control mode corresponding to the operation mode according to the mode control instruction, wherein the plurality of pressurized water reactor core control modes comprise: a first control mode, a second control mode, and a third control mode.

In one embodiment, the controlling the pressurized water reactor core based on the target control mode includes:

if the target control mode is a first control mode, controlling a first control rod group to compensate power variation, controlling a second control rod group to compensate temperature and xenon toxicity variation of the pressurized water reactor core, and controlling a third control rod group to compensate axial power distribution variation of the first control rod group and the second control rod group to the pressurized water reactor core, so as to keep the axial power distribution of the pressurized water reactor core within a preset range taking a target power value as a center;

If the target control mode is a second control mode, controlling the first control rod group to compensate for power variation, compensating for temperature and xenon toxicity variation of the pressurized water reactor core by adjusting boron concentration of the pressurized water reactor core, and controlling the third control rod group to compensate for axial power distribution variation of the pressurized water reactor core, so as to keep the axial power distribution of the pressurized water reactor core within a preset range centering on a target power value;

if the target control mode is a third control mode, compensating the power change and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core; and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center.

In one embodiment, the method further comprises:

if the target control mode is a first control mode, and the load change operation mode is switched to a basic load operation mode, controlling the position of the first control rod group to be unchanged, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core;

If the target control mode is a second control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, providing the second control rod group outside the pressurized water reactor, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core;

if the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core.

In a second aspect, the application also provides a pressurized water reactor core control device. The device comprises:

the mode acquisition module is used for acquiring the operation mode of the pressurized water reactor core;

the determining module is used for determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode;

And the control module is used for controlling the first control rod group, the second control rod group and the third control rod group based on the target control mode.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:

acquiring an operation mode of a pressurized water reactor core;

and controlling the first control rod group, the second control rod group and the third control rod group based on the target control mode.

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

acquiring an operation mode of a pressurized water reactor core;

In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:

acquiring an operation mode of a pressurized water reactor core;

The method, the device, the computer equipment, the storage medium and the computer program product for controlling the pressurized water reactor core are realized by acquiring the operation mode of the pressurized water reactor core; determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode; and controlling the pressurized water reactor core based on the target control mode. The first control rod group, the second control rod group and the third control rod group are controlled by selecting corresponding target control modes through the operation mode of the pressurized water reactor core, so that various adjustment requirements of the pressurized water reactor core can be met, and the operation flexibility of the nuclear power unit can be improved.

Drawings

FIG. 1 is an environmental diagram of an application of a pressurized water reactor core control method in one embodiment;

FIG. 2 is a flow diagram of a method of controlling a pressurized water reactor core in one embodiment;

FIG. 3 is a schematic diagram of control rod placement in a pressurized water reactor core in one embodiment;

FIG. 4 is a block diagram of a pressurized water reactor core control device in one embodiment;

fig. 5 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The pressurized water reactor core control method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. Wherein the pressurized water reactor core 102 is in communication with the processor 104 via a network. The data storage system may store data that the processor 104 needs to process. The data storage system may be integrated on the processor 104. The processor 104 obtains the operating mode of the pressurized water reactor core 102; the processor 104 determines a target control mode corresponding to the operation mode of the pressurized water reactor core 102 from a plurality of pressurized water reactor core control modes according to the operation mode of the pressurized water reactor core 102; the processor 104 controls the first control bar set, the second control bar set, and the third control bar set 102 based on the target control pattern.

In one embodiment, as shown in FIG. 2, a pressurized water reactor core control method is provided, and is described as applied to the processor 104 of FIG. 1, comprising the steps of:

step 202, obtaining the operation mode of the pressurized water reactor core.

The pressurized water reactor is a pressurized water nuclear reactor, and is a reactor taking pressurized light water which does not boil (namely ordinary water) as a moderator and a coolant, and mainly comprises a fuel assembly, a moderator (also serving as a coolant), a control rod assembly, a burnable poison assembly, a neutron source assembly, a reactor core hanging basket, a pressure shell and the like. Pressurized water reactors are typically cylindrical pressure vessels in which the portion of fissile material is referred to as the pressurized water reactor core and is comprised primarily of core structure nuclear fuel, control rod assemblies, and the like. There are a number of modes of operation of the pressurized water reactor core, including: load change operation mode, etc.

Specifically, the processor obtains the operating mode of the pressurized water reactor core.

Step 204, determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode.

The pressurized water reactor core control modes are control modes with different actions of control rod assemblies in the pressurized water reactor core according to the requirements of the pressurized water reactor core, and at least two preset pressurized water reactor core control modes are provided. And comparing the load adjusting frequency of the operation mode of the pressurized water reactor core with a preset frequency threshold value to determine a target control mode corresponding to the operation mode of the pressurized water reactor core.

Specifically, the processor determines a corresponding target control mode of the pressurized water reactor core operation according to the pressurized water reactor core operation mode and a preset threshold value of load frequency adjustment.

Step 206, controlling the first control bar set, the second control bar set and the third control bar set based on the target control mode.

Specifically, the processor controls the first control bar set, the second control bar set, and the third control bar set according to a target control mode.

In the pressurized water reactor core control method, the operation mode of the pressurized water reactor core is obtained; determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode; and controlling the pressurized water reactor core based on the target control mode. The first control rod group, the second control rod group and the third control rod group are controlled by selecting corresponding target control modes through the operation mode of the pressurized water reactor core, so that various adjustment requirements of the pressurized water reactor core can be met, and the operation flexibility of the nuclear power unit can be improved.

In one embodiment, obtaining an operational mode of a pressurized water reactor core includes: acquiring operation information of a pressurized water reactor core; and determining the operation mode of the pressurized water reactor core according to the operation information.

The operation information refers to a pressurized water reactor core load change state and a fuel burnup state.

Specifically, the processor acquires the state of the load change of the pressurized water reactor core and the fuel burnup state, and determines the operation mode of the pressurized water reactor core according to the state of the load change of the pressurized water reactor core and the fuel burnup state.

In this embodiment, the selection of the pressurized water reactor core control mode can be facilitated by acquiring the operation mode of the pressurized water reactor core.

In one embodiment, the mode of operation is a load change mode of operation; according to the operation mode, determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes, including: according to the load regulation condition, determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes, wherein the target control mode comprises the following steps:

specifically, the processor determines a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the load adjustment condition,

in this embodiment, the corresponding target control mode is determined according to the load adjustment condition, so that accurate adjustment requirements can be provided, and flexibility of unit operation is improved.

In one embodiment, the determining, according to the load change operation mode, a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes includes: acquiring a control mode instruction; the load change operation mode determines a target control mode corresponding to the operation mode according to a mode control instruction, wherein the plurality of pressurized water reactor core control modes comprise: a first control mode, a second control mode, and a third control mode.

The control mode instruction refers to a mode target mode control instruction sent to the processor by an operator according to actual running conditions.

Specifically, the processor acquires a mode control instruction, and the load change operation mode determines a target control mode corresponding to the load change operation mode according to the acquired mode control instruction.

In this embodiment, by the mode control instruction, the corresponding control mode can be accurately selected.

In one embodiment, the controlling the first control bar set, the second control bar set, and the third control bar set based on the target control pattern includes:

if the target control mode is a first control mode, controlling a first control rod group to compensate for power variation, controlling a second control rod group to compensate for temperature and xenon toxicity variation of a pressurized water reactor core, controlling the second control rod group to be kept in a preset operation interval by adjusting boron concentration of the pressurized water reactor, and controlling a third control rod group to compensate for axial power distribution variation of the first control rod group and the second control rod group to the pressurized water reactor core, wherein the axial power distribution of the pressurized water reactor core is kept in a preset range centering on a target power value; if the target control mode is the second control mode, controlling the first control rod group to compensate for power variation, and compensating for temperature and xenon toxicity variation of the pressurized water reactor core by adjusting boron concentration of the pressurized water reactor core, and controlling the third control rod group to compensate for axial power distribution variation of the pressurized water reactor core, so as to keep axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center; if the target control mode is the third control mode, compensating the power change and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core; and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center.

The xenon toxin change refers to the change of xenon toxin in the reactor core of the pressurized water reactor in the reaction process. The control rod means that in order to control the rate of the chain reaction to a predetermined level, the absorption rod set is made of a neutron absorbing material. The control rod is made of boron, cadmium and other materials which are easy to absorb neutrons. The reaction rate of the pressurized water reactor is adjusted by adjusting the depth of the control rods inserted into the pressurized water reactor core.

Specifically, if the processor identifies the target control mode as a first control mode, controlling the first control rod group to compensate the power change; the second control rod group is controlled to be inserted into the pressurized water reactor core, and as the second control rod group can be lifted or inserted into the pressurized water reactor core to adjust the reactivity change in the pressurized water reactor core, the second control rod group can be lifted or inserted into the pressurized water reactor core to compensate the xenon toxicity change caused by the axial power and the axial power distribution change; the second control rod group is controlled to be arranged in the preset target interval range of the pressurized water reactor core by controlling the boron concentration of the pressurized water reactor core, and the third control rod group is controlled to compensate the axial power distribution change of the first control rod group and the second control rod group to the pressurized water reactor core, so that the axial power distribution of the pressurized water reactor core is kept in the preset range taking the target power value as the center. Taking the load reduction of the steam turbine as an example, controlling the first control rod group to be inserted into the reactor according to a preset scale curve to reduce the power of the reactor; the power reduction causes the xenon to increase first, after the xenon reaches a low-power operation platform, the xenon gradually decreases after passing through a xenon peak, and the second control rod group needs to be controlled to firstly put forward and then be inserted into the pressure-maintaining water reactor to maintain the average core temperature in order to compensate the change of the reactor core reactivity of the pressurized water reactor. Taking the load reduction and load increase of the steam turbine as an example, controlling the first control rod group to raise the power of the reactor according to a preset scale curve; the increase of the reactor power causes the xenon to decrease firstly, and after the xenon reaches a high-power operation platform, the xenon gradually increases after passing through a xenon valley, and the second control rod group needs to be controlled to firstly put forward and then be inserted into the pressure-maintaining water reactor to maintain the average core temperature in order to compensate the change of the reactor core reactivity of the pressurized water reactor. Throughout the transient, the core axial offset is maintained within the set operating band by the third control rod set.

If the processor identifies the target control mode as the second control mode, controlling the first control rod group to compensate the power change, compensating the temperature and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core, and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, so as to keep the axial power distribution of the pressurized water reactor core within a preset range centering on the target power value. Taking the load reduction of the steam turbine as an example, controlling the first control rod group to be inserted into the reactor according to a preset scale curve to reduce the power of the reactor; the power reduction leads to the increase of the xenon, and after the xenon reaches a low-power operation platform, the xenon gradually decreases after passing through a xenon peak, the boron concentration of the pressurized water reactor core needs to be diluted and reduced, and then the boron concentration of the pressurized water reactor core is increased by the boride to compensate the change of the xenon so as to maintain the average temperature of the pressurized water reactor core. Otherwise, when the load of the steam turbine is increased, the first control rod group is controlled to raise the power of the reactor according to a preset scale curve; the power increase causes the xenon to decrease firstly, and after the xenon reaches a high-power operation platform, the xenon gradually increases after passing through a xenon valley, and the boron concentration of the reactor core of the pressurized water reactor needs to be increased by first boronizing and then diluted to reduce the boron concentration to compensate the change of the xenon so as to keep the average temperature of the reactor core. The third control rod set compensates for minor temperature changes throughout the transient while maintaining the pressurized water reactor core axial offset within the set operating band.

If the processor identifies the target control mode as a third control mode, compensating the power change and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core; and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center. In one embodiment, the excess reactivity of the pressurized water reactor core changes slowly as the fuel burnup deepens, which changes need to be compensated for by adjusting the core boron concentration. When the load changes, the power effect and the xenon toxicity are compensated by adjusting the core boron concentration, dilution or boride is dependent on the combined effect of the power feedback and the xenon toxicity, if the reactor core reactivity of the pressurized water reactor is increased, a boride means is adopted, and the reactor core reactivity is reduced by adopting a dilution means. The third control rod group compensates for minor temperature changes throughout the transient while maintaining the core axial offset within the set operating band.

In the embodiment, the power change of the reactor core is controlled by different power division of each control rod group in the control mode, so that different adjustment requirements of the pressurized water reactor core can be more directly met.

In one embodiment, the method further comprises: if the target control mode is a first control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core by controlling the boron concentration of the pressurized water reactor core, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core.

Specifically, if the processor identifies that the target control mode is a first control mode and the load change operation mode is switched to the base load operation mode, controlling the position of a first control rod group to be unchanged, controlling a second control rod group to compensate the change of the reactivity of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core, inserting the second control rod group into the reactor for operation, continuously lifting the second control rod group to the top of a preset target interval by providing a compensation burnup effect, adjusting the boron concentration of the pressurized water reactor core to place the second control rod group in the target interval range, and controlling a third control rod group to be inserted at the upper part of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core; the first control rod group is driven by a preset power-rod position scale curve signal, the second control rod group is driven by a preset power-rod position scale curve signal, and the third control rod group is driven by a reactor core axial deviation signal.

In this embodiment, when the target control mode is the first control mode and the load change operation mode is switched to the base load operation mode, the operation of each control rod group is controlled, so that the different division of each control rod group is more targeted.

In one embodiment, the method further comprises: if the target control mode is a second control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, providing the second control rod group outside the pressurized water reactor, and controlling the third control rod group to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; and compensating the burnup effect and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core.

Specifically, if the processor identifies that the target control mode is the second control mode and the load change operation mode is switched to the base load operation mode, the position of the first control rod group is controlled to be kept still. The second control rod group is controlled to provide a pressurized water reactor to be used as a shutdown rod, the third control rod group is controlled to be used for adjusting the temperature and the axial power distribution of the pressurized water reactor core, and the third control rod group is controlled to be inserted into the upper part of the pressurized water reactor core. The burnup effect is compensated for by adjusting the boron concentration of the pressurized water reactor core. The first control rod group is driven by a preset power-rod position scale curve signal. The third control rod set can be automatically driven by a temperature deviation signal or a reactor core axial deviation signal, and can also be manually adjusted. The core boron concentration of the pressurized water reactor can be automatically or manually adjusted according to the temperature deviation signal to compensate the burnup effect and the xenon toxicity change of the pressurized water reactor core.

In this embodiment, when the target control mode is the second control mode and the load change operation mode is switched to the base load operation mode, the operation of each control rod group is controlled, so that the different division of each control rod group is more targeted.

In one embodiment, the method further comprises: if the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; and compensating the burnup effect and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core.

Specifically, if the processor identifies that the target control mode is the third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are controlled to propose that the pressurized water reactor is used as a shutdown rod. The third control rod group is used for adjusting the temperature and the axial power distribution of the pressurized water reactor core and is inserted into the upper part of the pressurized water reactor core. The core boron concentration of the pressurized water reactor can be automatically or manually adjusted according to the temperature deviation signal to compensate the burnup effect and the xenon toxicity change of the pressurized water reactor core. .

In this embodiment, when the target control mode is the third control mode and the load change operation mode is switched to the base load operation mode, the operation of each control rod group is controlled, so that the different division of each control rod group is more targeted.

The pressurized water reactor core control method is described below in connection with one detailed embodiment. The present embodiment is exemplified by a reactor core consisting of 157 fuel assemblies, which is a total of 69 groups of control rod assemblies. In addition to the shutdown rod groups, the other control rods within the core are divided into three groups: a first control bar set (P bar set), a second control bar set (T bar set) and a third control bar set (AO bar set), as shown in fig. 3. The P-bar set and the T-bar set need to meet a specified number and order of overlapping steps when operating in the stack. The method comprises the following specific steps:

(1) The method comprises the steps that a processor obtains the operation mode of a pressurized water reactor core;

(2) When the operation mode of the pressurized water reactor core obtained by the processor is a load change operation mode, judging according to the load adjusting frequency of the load change operation mode:

(3) The processor acquires a mode control instruction sent to the processor by an operator;

(4) The processor determines a target control mode corresponding to the load change operation mode according to the mode control instruction;

(5) If the processor identifies the target control mode as the first control mode, the P-bar set compensates for effects caused by power variations. The T rod group compensates xenon toxicity change, and is placed at an effective position by adjusting boron concentration after being inserted into a reactor core of the pressurized water reactor. The AO rod group compensates the change of axial power distribution of the pressurized water reactor core caused by the first control rod group and the second control rod group, and keeps the axial power distribution of the pressurized water reactor core within a preset range taking a target power value as a center; if the processor identifies the target control mode as the second control mode, the P-bar set is used for power variation induced utility. The temperature change and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core. The AO rod group compensates for the change in the axial power distribution of the pressurized water reactor core in the xenon change and remains near the target location of the axial power distribution of the pressurized water reactor core. If the processor identifies the target control mode as the third control mode, compensating the effect and the xenon toxicity change caused by the power change by adjusting the boron concentration of the pressurized water reactor core. The AO rod group compensates for the change in the axial power distribution of the pressurized water reactor core in the xenon change and remains near the target location of the axial power distribution of the pressurized water reactor core.

(6) If the processor identifies that the target control mode is a first control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the P rod group to be unchanged, controlling the T rod group to compensate the change of the reactor core reactivity of the pressurized water reactor, inserting the T rod group into the reactor for operation, continuously raising the T rod group to compensate the burnup effect, raising the T rod group to the top of a section of a preset target section, adjusting the boron concentration of the pressurized water reactor core, re-arranging the T rod group in the range of the target section, and controlling the AO rod group to be inserted at the upper part of the pressurized water reactor core; the AO rod group is used for controlling the axial power distribution of the pressurized water reactor core;

and if the processor identifies the target control mode as the second control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the P rod group to be kept still. The control T rod group is used for providing a pressurized water reactor to be used as a shutdown rod, the AO rod group is used for adjusting the temperature and the axial power distribution of the pressurized water reactor core, and the AO rod group is controlled to be inserted into the upper part of the pressurized water reactor core. The burnup effect is compensated for by adjusting the boron concentration of the pressurized water reactor core. Wherein, the P rod group is driven by a preset power-rod position scale curve signal. The AO rod group can be automatically driven by a temperature deviation signal or a reactor core axial deviation signal, and can also be manually adjusted. The core boron concentration can be automatically or manually adjusted according to the temperature deviation signal.

And if the processor identifies that the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, controlling the P rod group and the T rod group to propose that the pressurized water reactor is used as a shutdown rod. The AO rod group is used for adjusting the temperature and the axial power distribution of the pressurized water reactor core, and is controlled to be inserted into the upper part of the pressurized water reactor core. The burnup effect is compensated for by adjusting the boron concentration of the pressurized water reactor core. The functional groupings of control bar assemblies for specific P-bar sets, T-bar sets, and AO-bar sets in different control modes are shown in Table 1.

TABLE 1 grouping of control rod assembly functions in different control modes

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a pressurized water reactor core control device for realizing the pressurized water reactor core control method. The implementation of the solution provided by the device is similar to that described in the above method, so the specific limitations in one or more embodiments of the pressurized water reactor core control device provided below may be referred to above as limitations of the pressurized water reactor core control method, and will not be repeated here.

In one embodiment, as shown in FIG. 4, there is provided a pressurized water reactor core control apparatus comprising: a mode acquisition module 410, a determination module 420, and a control module 430, wherein:

a mode acquisition module 410, configured to acquire an operation mode of the pressurized water reactor core;

the determining module 420 determines a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the operation mode;

the control module 430 is configured to control the first control bar set, the second control bar set, and the third control bar set based on the target control mode.

In one embodiment, the pressurized water reactor core control device further includes: and the information acquisition module. The information acquisition module is used for acquiring the operation information of the pressurized water reactor core; the determining module 420 is configured to determine an operation mode of the pressurized water reactor core according to the operation information.

In one embodiment, the determining module 420 is configured to determine a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes according to the load adjustment condition.

In one embodiment, the pressurized water reactor core control device further includes: and an instruction acquisition module. The instruction acquisition module is used for acquiring a control mode instruction; the information obtaining module determining module 420 is configured to determine a target control mode corresponding to the operation mode according to the mode control instruction by using the load change operation mode, where the plurality of pressurized water reactor core control modes include: a first control mode, a second control mode, and a third control mode.

In one embodiment, the control module 430 is configured to control the first control rod group to compensate for the power variation if the target control mode is the first control mode, control the second control rod group to compensate for the temperature and the xenon toxicity variation of the pressurized water reactor core, control the second control rod group to be placed in a preset target interval range of the pressurized water reactor core by controlling the boron concentration of the pressurized water reactor, and control the third control rod group to compensate for the axial power distribution variation of the first control rod group and the second control rod group to the pressurized water reactor core, and keep the axial power distribution of the pressurized water reactor core within a preset range centering on the target power value; if the target control mode is the second control mode, controlling the first control rod group to compensate for power variation, and compensating for temperature and xenon toxicity variation of the pressurized water reactor core by adjusting boron concentration of the pressurized water reactor core, and controlling the third control rod group to compensate for axial power distribution variation of the pressurized water reactor core, so as to keep axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center; if the target control mode is the third control mode, compensating the power change and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core; and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center.

In one embodiment, the control module 430 is configured to control, if the target control mode is the first control mode and the load change operation mode is switched to the base load operation mode, the position of the first control rod set to remain unchanged, and control the second control rod set to be placed in a preset target interval range of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core, and control the third control rod set to be inserted in the upper portion of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core.

In one embodiment, the control module 430 is configured to control the first control rod set to remain unchanged when the target control mode is the second control mode and the load change operation mode is switched to the base load operation mode, and propose the second control rod set to the outside of the pressurized water reactor core, and control the third control rod set to be inserted in the upper portion of the pressurized water reactor core; the burnup effect and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core.

In one embodiment, the control module 430 is configured to propose the first control rod group and the second control rod group to the outside of the pressurized water reactor when the target control mode is the third control mode and the load change operation mode is switched to the base load operation mode, and control the third control rod group to be inserted in the upper portion of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; the burnup effect and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core.

The various modules in the pressurized water reactor core control apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by the processor, implements a pressurized water reactor core control method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in FIG. 5 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

acquiring an operation mode of a pressurized water reactor core;

according to the operation mode, determining a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes;

In one embodiment, the processor when executing the computer program further performs the steps of:

acquiring operation information of a pressurized water reactor core;

acquiring a control mode instruction;

if the target control mode is the first control mode, controlling the first control rod group to compensate the power change, controlling the second control rod group to compensate the temperature and xenon toxicity change of the pressurized water reactor core, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core by controlling the boron concentration of the pressurized water reactor, controlling the third control rod group to compensate the axial power distribution change of the first control rod group and the second control rod group to the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core in the preset range taking the target power value as the center;

if the target control mode is the second control mode, controlling the first control rod group to compensate for power variation, and compensating for temperature and xenon toxicity variation of the pressurized water reactor core by adjusting boron concentration of the pressurized water reactor core, and controlling the third control rod group to compensate for axial power distribution variation of the pressurized water reactor core, so as to keep axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center;

If the target control mode is the third control mode, compensating the power change and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core; and controlling the third control rod group to compensate the axial power distribution change of the pressurized water reactor core, and keeping the axial power distribution of the pressurized water reactor core within a preset range taking the target power value as the center.

if the target control mode is a first control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core.

if the target control mode is a second control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, providing the second control rod group outside the pressurized water reactor, and controlling the third control rod group to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; the burnup effect and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core.

if the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core and compensating the burnup effect and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

acquiring an operation mode of a pressurized water reactor core;

the pressurized water reactor core is controlled based on the target control mode.

In one embodiment, the computer program when executed by the processor further performs the steps of:

acquiring operation information of a pressurized water reactor core;

and determining the operation modes of the first control rod group, the second control rod group and the third control rod group according to the operation information.

acquiring a control mode instruction;

if the target control mode is the first control mode, controlling the first control rod group to compensate the power change, controlling the second control rod group to compensate the temperature and xenon toxicity change of the pressurized water reactor core, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor, and controlling the third control rod group to compensate the axial power distribution change of the first control rod group and the second control rod group to the pressurized water reactor core, so as to keep the axial power distribution of the pressurized water reactor core in the preset range taking the target power value as the center;

if the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and the axial power distribution of the pressurized water reactor core, and the burnup effect and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core.

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

Acquiring an operation mode of a pressurized water reactor core;

acquiring operation information of a pressurized water reactor core;

acquiring a control mode instruction;

If the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the reactor core of the pressurized water reactor; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; the burnup effect and the xenon toxicity change of the pressurized water reactor core are compensated by adjusting the boron concentration of the pressurized water reactor core.

The user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A pressurized water reactor core control method, characterized in that the pressurized water reactor core comprises: a first set of control rods, a second set of control rods, and a third set of control rods, the method comprising:

acquiring an operation mode of a pressurized water reactor core;

2. The method of claim 1, wherein the acquiring the operating mode of the pressurized water reactor core comprises:

acquiring operation information of a pressurized water reactor core;

3. The method of claim 1, wherein the operating mode is a load change operating mode; the determining, according to the operation mode, a target control mode corresponding to the operation mode from a plurality of pressurized water reactor core control modes includes:

4. The method of claim 3, wherein the determining a target control mode corresponding to the operating mode from among a plurality of pressurized water reactor core control modes according to the load change operating mode comprises:

acquiring a control mode instruction;

5. The method of claim 4, wherein the controlling the first control bar set, the second control bar set, and the third control bar set based on the target control pattern comprises:

if the target control mode is a first control mode, controlling the first control rod group to compensate for power variation, controlling the second control rod group to compensate for temperature and xenon toxicity variation of the pressurized water reactor core, controlling the second control rod group to be arranged in a preset target interval range of the pressurized water reactor core by adjusting boron concentration of the pressurized water reactor, controlling the third control rod group to compensate for axial power distribution variation of the first control rod group and the second control rod group to the pressurized water reactor core, and keeping axial power distribution of the pressurized water reactor core in a preset range taking a target power value as a center;

6. The method of claim 5, wherein the method further comprises:

if the target control mode is a first control mode, and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, controlling the second control rod group to be placed in a preset target interval range of the pressurized water reactor core by controlling the boron concentration of the pressurized water reactor core, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for controlling the axial power distribution of the pressurized water reactor core.

7. The method of claim 5, wherein the method further comprises:

if the target control mode is a second control mode and the load change operation mode is switched to the basic load operation mode, controlling the position of the first control rod group to be unchanged, providing the second control rod group outside the pressurized water reactor, and controlling the third control rod group to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; and compensating the burnup effect and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core.

8. The method of claim 5, wherein the method further comprises:

if the target control mode is a third control mode and the load change operation mode is switched to the basic load operation mode, the first control rod group and the second control rod group are put out of the pressurized water reactor, and the third control rod group is controlled to be inserted into the upper part of the pressurized water reactor core; the third control rod group is used for adjusting the temperature and axial power distribution of the pressurized water reactor core; and compensating the burnup effect and the xenon toxicity change of the pressurized water reactor core by adjusting the boron concentration of the pressurized water reactor core.

9. A pressurized water reactor core control apparatus, the pressurized water reactor core comprising: a first control bar set, a second control bar set, and a third control bar set, the apparatus comprising:

10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.