Reactor control method and equipment and storage medium

Abstract

The invention provides a control method and equipment of a reactor and a storage medium, and relates to the technical field of nuclear reactors. The control method of the reactor comprises the following steps: controlling a target parameter to be within a preset range, so that the reactor power and the average temperature of a loop coolant meet a target corresponding relation, the target parameters comprise reactor power, primary loop coolant pressure, primary loop coolant charge, primary loop coolant average temperature, intermediate isolation loop total flow, intermediate isolation loop coolant pressure, intermediate isolation loop coolant charge, three-loop superheater outlet steam pressure and three-loop evaporator liquid level. By controlling the target parameters in the three loop systems, the reactor power and the average temperature of the primary loop coolant meet the target corresponding relation, the stability of the reactor can be maintained, a special safety system is not triggered or the reactor is shut down under the condition that the transient operating condition occurs, and the safety and economical efficiency of the reactor are improved.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear reactors, and in particular to a control method, device and storage medium for a reactor. Background Art

[0002] During the operation of the reactor, there are some operating transients that occur frequently or regularly during power operation, refueling, maintenance or operation. The stable operation of the reactor under these operating transient conditions may trigger protection actions such as shutdown or dedicated signals, resulting in reduced safety and economic efficiency of the reactor.

[0003] The integrated small reactor adopts an integrated full natural circulation design, eliminating the main pipeline and main pump of the primary coolant loop of the traditional pressurized water reactor, eliminating the risk of a major breach accident from the source, and adopting a passive safety design concept to ensure the inherent safety of the reactor. The integrated small reactor relies on the heat generated by the reactor core and the heat brought by the primary and secondary heat exchange components to form a temperature difference and density difference in the primary coolant loop, thereby maintaining the full natural circulation operation state of the primary loop, realizing the continuous extraction of core heat, and meeting the steam and heat supply needs of the back end. Summary of the invention

[0004] In order to alleviate, mitigate or eliminate the above-mentioned technical problems, the present application provides a control method, device and storage medium for a reactor to improve the safety and economy of the reactor.

[0005] In a first aspect, the present application provides a control method for a reactor, wherein the reactor comprises a primary circuit system, an intermediate isolation circuit system and a tertiary circuit system connected in sequence, and the control method comprises: The target parameters are controlled within a preset range so that the reactor power and the average temperature of the primary coolant satisfy the target corresponding relationship. The target parameters include reactor power, primary coolant pressure, primary coolant loading, primary coolant average temperature, total flow of the intermediate isolation loop, intermediate isolation loop coolant pressure, intermediate isolation loop coolant loading, third-loop superheater outlet steam pressure and third-loop evaporator liquid level.

[0006] In a second aspect, the present application provides a control device, including: at least one processor; and At least one memory having instructions stored thereon, wherein when the instructions are executed individually or collectively by the at least one processor, the control device executes the method according to the first aspect.

[0007] In a third aspect, the present application provides a computer storage medium having instructions stored thereon, wherein when at least one processor of a controlled device executes the instructions individually or collectively, the control device executes the method described in the first aspect.

[0008] Compared with the prior art, this application has the following advantages: The control method of the reactor provided in the present application includes controlling the target parameters within a preset range so that the reactor power and the average temperature of the primary coolant satisfy the target corresponding relationship. Among them, the target parameters include reactor power, primary coolant pressure, primary coolant charge, primary coolant average temperature, total flow of the intermediate isolation loop, intermediate isolation loop coolant pressure, intermediate isolation loop coolant charge, three-loop superheater outlet steam pressure and three-loop evaporator liquid level. By controlling these target parameters in the three-loop system, the reactor power and the average temperature of the primary coolant satisfy the target corresponding relationship, and in the event of transient operating conditions, the stability of the reactor can be maintained without triggering a dedicated safety system or reactor shutdown, thereby improving the safety and economy of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are included to provide a further understanding of the present application. They are included and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the present specification serve to explain the principles of the present application. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a reactor provided in an embodiment of the present application; Figure 2 is a schematic diagram of a control method for a reactor provided in an embodiment of the present application; Figure 3 It is a structural schematic diagram of a control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0011] As shown in this application, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0012] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0013] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0014] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of the component itself.

[0015] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0016] It should be understood that when a component is referred to as being “on another component,” “connected to another component,” “coupled to another component,” or “contacting another component,” it can be directly on, connected to, coupled to, or contacting the other component, or intervening components may be present. In contrast, when a component is referred to as being “directly on another component,” “directly connected to,” “directly coupled to,” or “directly contacting” another component, there are no intervening components present.

[0017] In addition, although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in this application specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0018] Flowcharts are used in the present application to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, various steps may be processed in reverse order or simultaneously. At the same time, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0019] Figure 1 Schematic diagram of the structure of a reactor provided in the embodiment of the present application. Figure 1As shown, the reactor includes a primary circuit system 110, an intermediate isolation circuit system 120 and a tertiary circuit system 130 connected in sequence, which can isolate the spread of radioactivity to users and ensure the safety of heating. The primary circuit system 110 is a reactor coolant circuit system, which adopts a fully natural circulation method and outputs the heat of the core 112 to the intermediate isolation circuit system 120 through the primary and secondary circuit heat exchange components 111. The core 112 is placed in a shell 113, and the shell 113 is usually equipped with a stabilizer and other devices.

[0020] The intermediate isolation loop system 120, i.e., the secondary loop system, adopts forced circulation, and conducts the reactor heat to the tertiary loop system 130 through the secondary and tertiary loop heat exchangers located on the main pipeline 121. The intermediate isolation loop system 120 is usually provided with equipment such as a surge tank 122, various regulating valves and isolation valves, and an intermediate isolation loop bypass branch 123. The surge tank 122 is connected to the primary and secondary loop heat exchange assembly 111.

[0021] The three-circuit system 130 is a steam supply circuit system, which transports the steam generated in the second and third-circuit heat exchangers to steam users or heat network heat exchangers. The steam supply heat exchanger is supplied with water by the water plant in the factory or the return water of the steam user. The three-circuit system 130 usually includes a superheater 131, an evaporator 132, a feed water preheater 133 and a feed water pump 134, as well as various regulating valves and other equipment. The superheater 131, the evaporator 132 and the feed water preheater 133 together constitute the second and third-circuit heat exchanger. The three-circuit system 130 may include one or more branches, each of which is provided with a superheater 131, an evaporator 132 and a feed water preheater 133, and the three are connected in sequence.

[0022] It is understandable that the reactor is not limited to the structure of this embodiment, but can have different variations. For example, some equipment can be changed or omitted, or additional equipment can be added. Figure 1 The area division of the primary loop system 110, the intermediate isolation loop system 120 and the tertiary loop system 130 is only schematic, and the devices included in each loop system may extend to another loop system division area, such as the pipeline of the intermediate isolation loop system 120 extending to the dotted box area where the tertiary loop system 130 is located.

[0023] In order to improve the reliability of the reactor and reduce or avoid unplanned shutdowns when the reactor is operating at high power, it is necessary to maintain the stability of the reactor in the event of transient operating conditions and not trigger the dedicated safety system or reactor shutdown.

[0024] The control method of the reactor provided in the embodiment of the present application includes controlling the target parameters within a preset range so that the reactor power and the average temperature of the primary coolant meet the target corresponding relationship. Wherein, the target parameters include reactor power, primary coolant pressure, primary coolant charge, primary coolant average temperature, intermediate isolation loop total flow, intermediate isolation loop coolant pressure, intermediate isolation loop coolant charge, three-loop superheater outlet steam pressure and three-loop evaporator liquid level. By controlling these target parameters in the three-loop system, the reactor power and the average temperature of the primary coolant meet the target corresponding relationship, such as when the reactor power is greater than or equal to 0% and less than or equal to 15%, the reactor power and the average temperature of the primary coolant are linearly related; when the reactor power is greater than 15% and less than or equal to 100%, the average temperature of the primary coolant is a constant value, which can maintain the stability of the reactor in the event of transient operating conditions, without triggering a dedicated safety system or reactor shutdown, thereby improving the safety and economy of the reactor.

[0025] In some embodiments, a relevant control system can be set to control these target parameters, and the control system can control the corresponding parameters by controlling the relevant target devices. In some embodiments, the reactor power is controlled by the reactor power control system within the first preset range; the pressure of the first circuit coolant is controlled within the second preset range by the pressurizer pressure control system; the first circuit coolant loading is controlled within the third preset range by the pressurizer liquid level control system; the average temperature of the first circuit coolant is controlled within the fourth preset range by the intermediate isolation circuit flow control system, and the total flow of the intermediate isolation circuit is controlled within the fifth preset range; the pressure of the intermediate isolation circuit surge tank is controlled within the sixth preset range by the intermediate isolation circuit surge tank pressure control system; the coolant loading of the intermediate isolation circuit is controlled within the seventh preset range by the intermediate isolation circuit surge tank liquid level control system; the steam pressure of the three-circuit superheater outlet is controlled within the eighth preset range by the three-circuit steam pressure control system; the liquid level of the three-circuit evaporator is controlled within the ninth preset range by the three-circuit feed water control system; and the steam pressure of the three-circuit superheater outlet is controlled within the tenth preset range by the three-circuit bypass discharge control system.

[0026] In one example, controlling the reactor power within a first preset range through a reactor power control system includes: obtaining a first deviation between a measured value of the reactor power and a power setting value through the reactor power control system, and controlling the power regulating rod group based on the first deviation so that the reactor power is within the first preset range. The reactor power control system is used to realize automatic control of the reactor power. The reactor power control system uses the first deviation between the measured value of the reactor power and the power setting value as the main control quantity, generates a direction and speed signal of the power regulating rod group through a predetermined power regulation algorithm, and sends it to the control rod control system to realize the lifting or insertion of the power regulating rod group.

[0027] Controlling the primary coolant pressure within the second preset range through the pressurizer pressure control system includes: obtaining a second deviation between the measured value of the pressurizer pressure and the pressure set value through the pressurizer pressure control system, and controlling the pressurizer spray valve and the electric heater based on the second deviation so that the primary coolant pressure is within the second preset range. The pressurizer pressure control system is used to keep the pressurizer pressure within the second preset range by controlling the pressurizer spray valve and the electric heater. The pressurizer pressure control system uses the second deviation between the measured value of the pressurizer pressure and the pressure set value as the main control quantity to generate a pressurizer spray valve control command and an electric heater control command.

[0028] Controlling the first-loop coolant charge within a third preset range through a pressurizer liquid level control system includes: obtaining a third deviation between the measured value of the pressurizer liquid level and the liquid level setting value through the pressurizer liquid level control system, and controlling the chemical volume system water supply pump and the upper charging regulating valve based on the third deviation, so that the first-loop coolant charge is within the third preset range. The pressurizer liquid level control system is used to provide control for charge changes caused by changes in coolant density in the reactor coolant system. The pressurizer liquid level control system uses the third deviation between the measured value of the pressurizer liquid level and the liquid level setting value as the main control quantity, and adjusts the upper charging flow rate by controlling the chemical volume system water supply pump and the upper charging regulating valve.

[0029] Controlling the average temperature of the first-loop coolant within the fourth preset range through the intermediate isolation loop flow control system includes: obtaining the fourth deviation between the measured value of the average temperature of the first-loop coolant and the temperature set value through the intermediate isolation loop flow control system, and controlling the intermediate isolation loop heat exchanger flow control valve based on the fourth deviation, so that the average temperature of the first-loop coolant is within the fourth preset range. Controlling the total flow of the intermediate isolation loop within the fifth preset range through the intermediate isolation loop flow control system includes: obtaining the fifth deviation between the measured value of the total flow of the intermediate isolation loop and the flow set value through the intermediate isolation loop flow control system, and controlling the intermediate isolation loop bypass branch flow control valve based on the fifth deviation, so that the total flow of the intermediate isolation loop is within the fifth preset range. The main functions of the intermediate isolation loop flow control system include two aspects, one of which is to control the average temperature of the first-loop coolant, use the fourth deviation between the measured value of the average temperature of the first-loop coolant and the temperature set value as the main control quantity, and adjust the intermediate isolation loop heat exchanger flow control valve to control the average temperature of the first-loop coolant within the fourth preset range. The second is to control the total flow of the intermediate isolation loop, using the fifth deviation between the measured value of the total flow of the intermediate isolation loop and the flow setting value as the main control quantity, and controlling the total flow of the intermediate isolation loop within the fifth preset range by adjusting the bypass branch flow regulating valve of the intermediate isolation loop.

[0030] Controlling the coolant pressure of the intermediate isolation circuit within the sixth preset range through the intermediate isolation circuit surge tank pressure control system includes: obtaining the sixth deviation between the measured value of the surge tank pressure and the pressure setting value through the intermediate isolation circuit surge tank pressure control system, and controlling the surge tank spray valve, the electric heater and the pressure release valve based on the sixth deviation, so that the coolant pressure of the intermediate isolation circuit is within the sixth preset range. The intermediate isolation circuit surge tank pressure control system is used to control the coolant pressure of the intermediate isolation circuit to maintain the pressure within the sixth preset range. The intermediate isolation circuit surge tank pressure control system uses the sixth deviation between the measured value of the surge tank pressure and the pressure setting value as the main control quantity to generate control commands for the surge tank spray valve, the electric heater and the pressure release valve.

[0031] Controlling the amount of coolant in the intermediate isolation circuit within the seventh preset range through the intermediate isolation circuit surge tank liquid level control system includes: obtaining the seventh deviation between the measured value of the surge tank liquid level and the liquid level setting value through the intermediate isolation circuit surge tank liquid level control system, and controlling the intermediate isolation circuit purification regulating valve and the purification circulation pump based on the seventh deviation, so that the amount of coolant in the intermediate isolation circuit is within the seventh preset range. The intermediate isolation circuit surge tank liquid level control system is used to provide control for the change in the amount caused by the change in the circulating water density of the intermediate isolation circuit system. The intermediate isolation circuit surge tank liquid level control system uses the seventh deviation between the measured value of the surge tank liquid level and the liquid level setting value as the main control quantity to control the upper filling flow or the lower discharge flow.

[0032] Controlling the outlet steam pressure of the three-circuit superheater within the eighth preset range through the three-circuit steam pressure control system includes: obtaining the eighth deviation between the measured value of the outlet steam pressure of the three-circuit superheater and the steam pressure setting value through the three-circuit steam pressure control system, and controlling the three-circuit steam regulating valve based on the eighth deviation so that the outlet steam pressure of the three-circuit superheater is within the eighth preset range. The three-circuit steam pressure control system is used to control the outlet steam pressure of the three-circuit superheater by adjusting the three-circuit steam regulating valve. The three-circuit steam pressure control system uses the eighth deviation between the measured value of the outlet steam pressure of the three-circuit superheater and the steam pressure setting value as the main control quantity, generates a control command for the three-circuit steam regulating valve, and automatically controls the outlet steam pressure of the three-circuit superheater by adjusting the industrial steam supply flow, so that the total load of the three-circuit system matches the reactor power.

[0033] Controlling the three-circuit evaporator liquid level within the ninth preset range through the three-circuit water supply control system includes: obtaining the ninth deviation between the measured value of the three-circuit evaporator liquid level and the water level setting value through the three-circuit water supply control system, and controlling the three-circuit water supply pump and the three-circuit water supply regulating valve based on the ninth deviation, so that the three-circuit evaporator liquid level is within the ninth preset range. The three-circuit water supply control system is used to control the three-circuit water supply pump and the three-circuit water supply regulating valve to keep the three-circuit evaporator liquid level within the ninth preset range. The three-circuit water supply control system uses the ninth deviation between the measured value of the three-circuit evaporator liquid level and the water level setting value as the main control quantity, generates control commands for the three-circuit water supply pump and the three-circuit water supply regulating valve, and achieves the purpose of adjusting the three-circuit evaporator liquid level.

[0034] Controlling the outlet steam pressure of the three-circuit superheater within the tenth preset range through the three-circuit bypass discharge control system includes: when the regulating capacity of the three-circuit steam pressure control system is insufficient or unavailable, controlling the three-circuit steam bypass valve through the three-circuit bypass discharge control system to automatically open after the outlet steam pressure of the three-circuit superheater reaches the bypass set value, so that the outlet steam pressure of the three-circuit superheater is within the tenth preset range. The three-circuit bypass discharge control system is used to control the three-circuit steam bypass valve to automatically open after the three-circuit steam pressure increases and reaches the bypass set value when the regulating capacity of the three-circuit steam pressure control system is insufficient or unavailable, so as to provide a heat sink for the unit. It should be noted that the tenth preset range may be the same as or different from the eighth preset range.

[0035] Figure 3 Schematic diagram of a control device provided in an embodiment of the present application. Figure 3 As shown, the control device 300 includes one or more processors 310 , one or more memories 320 coupled to the processors 310 , and one or more communication modules 340 coupled to the processors 310 .

[0036] The communication module 340 is used for two-way communication. The communication module 340 has at least one antenna to facilitate communication. The communication interface may represent any interface necessary for communicating with other network elements.

[0037] Processor 310 may be of any type suitable for the local technology network, and may include, as non-limiting examples, one or more of: a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Control device 300 may have multiple processors, such as application specific integrated circuit chips, which are driven in time to a clock that synchronizes a master processor.

[0038] The memory 320 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 324, electrically programmable read-only memory (EPROM), flash memory, hard disk, compact disk (CD), digital video disk (DVD), and other magnetic and / or optical memories. Examples of volatile memories include, but are not limited to, random access memory (RAM) 322 and other volatile memories that do not persist during the duration of a power outage.

[0039] The computer program 330 includes computer executable instructions that are executed by the associated processor 310. The program 330 may be stored in the ROM 324. The processor 310 may perform any appropriate actions and processes by loading the program 330 into the RAM 322.

[0040] The embodiment of the present application can be implemented by the program 330, so that the control device 300 can execute the reference Figure 2 Any process disclosed in the discussion. The embodiments of the present application may also be implemented by hardware or by a combination of software and hardware.

[0041] In some embodiments, the program 330 may be tangibly contained in a computer-readable medium, which may be contained in the control device 300 (e.g., memory 320) or other storage device accessible to the control device 300. The control device 300 may load the program 330 from the computer-readable medium to the RAM 322 for execution. The computer-readable medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. The computer-readable medium has the program 330 stored thereon.

[0042] Generally, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. Certain aspects can be implemented in hardware, while other aspects can be implemented in firmware or software, which can be performed by a controller, a microprocessor or other control device. Although various aspects of the embodiments of the present application are shown and described as block diagrams, flow charts, or using some other graphical representations, it should be understood that, as non-limiting examples, the blocks, devices, systems, techniques or methods described herein can be implemented in hardware, software, firmware, dedicated circuits or logic, general hardware or controllers or other control devices, or some combination thereof.

[0043] The present application also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer executable instructions, such as instructions included in program modules, which are executed in a device on a target real or virtual processor to perform the above-mentioned reference Figure 2 The method described. Typically, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform specific tasks or implement specific abstract data types. In various embodiments, the functions of program modules can be combined or separated between program modules as needed. Machine executable instructions for program modules can be executed in local or distributed devices. In distributed devices, program modules can be located in local and remote storage media.

[0044] The program code for executing the method of the present application can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing equipment so that when the program code is executed by the processor or controller, the function / operation specified in the flow chart and / or the block diagram is realized. The program code can be executed completely on the machine as an independent software package, partially on the machine, partially on the machine, partially on a remote machine, partially on a remote machine, or all on a remote machine or server.

[0045] In the context of this application, computer program codes or related data may be carried by any appropriate carrier to enable a device, apparatus or processor to perform various processes and operations as described above. Examples of carriers include signals, computer readable media, etc.

[0046] The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or apparatuses, or any suitable combination of the foregoing. More specific examples of computer readable storage media include an electrical connection having one or more conductors, a portable computer floppy disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0047] In addition, although the operations are described in a specific order, this should not be construed as requiring to perform these operations in the specific order or sequence shown, or to perform all the operations shown, to obtain the desired result. In some cases, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these details should not be interpreted as limiting the scope of the application, but can be interpreted as a description of the specific features of a particular embodiment. Some of the features described in the context of a separate embodiment may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0048] Although the present application has been described in language specific to structural features and / or methodological acts, it should be understood that the present application defined in the appended claims is not necessarily limited to the specific features or acts described above. Instead, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A control method for a reactor, wherein the reactor comprises a primary circuit system, an intermediate isolation circuit system and a tertiary circuit system connected in sequence, characterized in that: The control method comprises: The target parameters are controlled within a preset range so that the reactor power and the average temperature of the primary coolant satisfy the target corresponding relationship. The target parameters include reactor power, primary coolant pressure, primary coolant loading, primary coolant average temperature, total flow of the intermediate isolation loop, intermediate isolation loop coolant pressure, intermediate isolation loop coolant loading, third-loop superheater outlet steam pressure and third-loop evaporator liquid level.

2. The control method according to claim 1, characterized in that: The target correspondence relationship includes: When the reactor power is greater than or equal to 0% and less than or equal to 15%, the reactor power is linearly related to the average temperature of the primary coolant; When the reactor power is greater than 15% and less than or equal to 100%, the average temperature of the primary coolant is a constant value.

3. The control method according to claim 1 or 2, characterized in that: The control target parameters include within the preset range: Controlling the reactor power within a first preset range through a reactor power control system; Controlling the coolant pressure of the primary circuit within a second preset range by means of a pressurizer pressure control system; Controlling the coolant charge of the primary circuit to be within a third preset range by means of a pressurizer liquid level control system; Controlling the average temperature of the first-circuit coolant within a fourth preset range and controlling the total flow of the intermediate isolation circuit within a fifth preset range through an intermediate isolation circuit flow control system; Controlling the coolant pressure of the intermediate isolation circuit within a sixth preset range through an intermediate isolation circuit surge tank pressure control system; Controlling the coolant charge of the intermediate isolation circuit within a seventh preset range through the intermediate isolation circuit surge tank liquid level control system; Controlling the outlet steam pressure of the three-circuit superheater to be within an eighth preset range through a three-circuit steam pressure control system; Controlling the liquid level of the three-circuit evaporator to be within a ninth preset range through a three-circuit water supply control system; The three-circuit bypass emission control system is used to control the outlet steam pressure of the three-circuit superheater to be within the tenth preset range.

4. The control method according to claim 3, characterized in that: Controlling the reactor power within a first preset range by a reactor power control system includes: A first deviation between a measured value of reactor power and a power setting value is obtained through a reactor power control system, and a power adjustment rod group is controlled based on the first deviation so that the reactor power is within a first preset range.

5. The control method according to claim 3, characterized in that: The controlling of the primary coolant pressure within a second preset range by means of a pressurizer pressure control system comprises: A second deviation between a measured value of the pressurizer pressure and a set pressure value is obtained through a pressurizer pressure control system, and the pressurizer spray valve and the electric heater are controlled based on the second deviation so that the primary circuit coolant pressure is within a second preset range.

6. The control method according to claim 3, characterized in that: The controlling the amount of the coolant in the primary circuit within a third preset range by means of the pressurizer liquid level control system comprises: The third deviation between the measured value of the pressurizer liquid level and the liquid level set value is obtained through the pressurizer liquid level control system, and the water replenishment pump and the charging regulating valve of the chemical volume system are controlled based on the third deviation, so that the coolant filling amount of the first circuit is within the third preset range.

7. The control method according to claim 3, characterized in that: Controlling the average temperature of the primary coolant in the fourth preset range by the intermediate isolation loop flow control system includes: The fourth deviation between the measured value of the average temperature of the first-loop coolant and the temperature set value is obtained through the intermediate isolation loop flow control system, and the flow regulating valve of the intermediate isolation loop heat exchanger is controlled based on the fourth deviation so that the average temperature of the first-loop coolant is within a fourth preset range.

8. The control method according to claim 3, characterized in that: Controlling the total flow of the intermediate isolation circuit within a fifth preset range by the intermediate isolation circuit flow control system includes: The fifth deviation between the measured value of the total flow of the intermediate isolation loop and the flow setting value is obtained through the intermediate isolation loop flow control system, and the intermediate isolation loop bypass branch flow regulating valve is controlled based on the fifth deviation so that the total flow of the intermediate isolation loop is within the fifth preset range.

9. The control method according to claim 3, characterized in that: The step of controlling the coolant pressure of the intermediate isolation circuit within a sixth preset range by using the intermediate isolation circuit surge tank pressure control system comprises: The sixth deviation between the measured value of the surge tank pressure and the pressure setting value is obtained through the intermediate isolation circuit surge tank pressure control system, and the surge tank spray valve, electric heater and pressure relief valve are controlled based on the sixth deviation so that the intermediate isolation circuit coolant pressure is within a sixth preset range.

10. The control method according to claim 3, characterized in that: The controlling of the coolant charge of the intermediate isolation circuit within a seventh preset range by the intermediate isolation circuit surge tank liquid level control system comprises: The seventh deviation between the measured value of the surge tank liquid level and the liquid level setting value is obtained through the intermediate isolation circuit surge tank level control system, and the intermediate isolation circuit purge regulating valve and the purge circulation pump are controlled based on the seventh deviation so that the intermediate isolation circuit coolant filling amount is within the seventh preset range.

11. The control method according to claim 3, characterized in that: The controlling of the outlet steam pressure of the three-circuit superheater within an eighth preset range by the three-circuit steam pressure control system comprises: The eighth deviation between the measured value of the three-circuit superheater outlet steam pressure and the steam pressure set value is obtained through the three-circuit steam pressure control system, and the three-circuit steam regulating valve is controlled based on the eighth deviation so that the three-circuit superheater outlet steam pressure is within the eighth preset range.

12. The control method according to claim 3, characterized in that: The controlling of the liquid level of the three-circuit evaporator within a ninth preset range by the three-circuit water supply control system comprises: The ninth deviation between the measured value of the three-circuit evaporator liquid level and the water level setting value is obtained through the three-circuit water supply control system, and the three-circuit water supply pump and the three-circuit water supply regulating valve are controlled based on the ninth deviation to make the three-circuit evaporator liquid level within the ninth preset range.

13. The control method according to claim 3, characterized in that: The step of controlling the outlet steam pressure of the three-circuit superheater within a tenth preset range by the three-circuit bypass emission control system includes: When the regulating capacity of the three-circuit steam pressure control system is insufficient or unavailable, the three-circuit steam bypass valve is controlled by the three-circuit bypass discharge control system to automatically open after the three-circuit superheater outlet steam pressure reaches the bypass set value, so that the three-circuit superheater outlet steam pressure is within the tenth preset range.

14. A control device, characterized in that: include: at least one processor; as well as At least one memory having instructions stored thereon, wherein when the instructions are executed individually or collectively by the at least one processor, the control device executes the control method according to any one of claims 1 to 13.

15. A computer storage medium, characterized in that The computer storage medium stores instructions, which, when executed individually or collectively by at least one processor of the controlled device, enable the control device to execute the control method according to any one of claims 1 to 13.

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