Unit control method, device and equipment suitable for third generation pressurized water reactor

Abstract

The application provides a unit control method, device and equipment suitable for a third generation pressurized water reactor, and the method comprises the following steps: if it is detected that a single-column AHP system fails to be isolated, the feedwater temperature of a secondary loop feedwater system is monitored in real time; if the difference of the feedwater temperature in a preset unit time is greater than a preset feedwater deviation value, the real-time operation power of the unit is obtained; whether the real-time operation power meets a preset unit power adjustment condition is judged according to a preset operation control strategy; if yes, the operation power of the unit is adjusted according to the unit power adjustment value in the operation control strategy. The embodiment of the application can adjust the operation power of the unit according to the unit power adjustment value in the operation control strategy, effectively improves the availability of the unit operation after the single-column AHP system is isolated, and ensures the safety and reliability of the unit operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pressurized water reactors, in particular to a unit control method, device and equipment suitable for third generation pressurized water reactors. BACKGROUND

[0002] The third generation nuclear power plant generally has two parallel AHP systems (high pressure feedwater heater system), when a single AHP system is isolated due to failure, the main feedwater temperature will decrease, and the decrease of the main feedwater temperature will cause the core power to rise, which is a class 2 design reference accident. The relevant safety analysis report has shown that the core will be stabilized at a high power level, without triggering the shutdown and related safety equipment action, and without DNB (departure from nucleate boiling and boiling). Under this accident, the operator can return to the normal power operation condition by attempting to restart the failed AHP system, if the AHP restart fails, the operator should make the reactor transition to the hot shutdown state, so that the unit is shut down and shut down, which cannot continue to generate electricity, affecting the unit availability.

[0003] After the single AHP system isolation restart fails, if the reactor is transitioned to the hot shutdown state, the unit is shut down and shut down, which will cause the problem of low unit availability. In order to improve the unit availability and economic performance, the prior art usually uses the following solutions:

[0004] 1. After the single AHP system isolation restart fails, the unit is withdrawn to the hot shutdown state, the secondary loop feedwater and steam systems are isolated, and the failed AHP is maintained until the AHP maintenance is completed and then restarted; however, in this scheme, the unit still needs to be shut down and shut down, which loses the economic efficiency of power generation; at the same time, after the AHP maintenance is completed, the unit needs to be restarted from the hot shutdown state, which increases the amount of radioactive waste water and has adverse effects on the environment;

[0005] 2. After the single AHP system isolation restart fails, the unit power is reduced to the rated power (such as 100% FP), and long-term operation is maintained; under this scheme, when the unit is maintained for long-term operation, if a design reference accident occurs, the reactor will be affected by double failures, which is easy to adversely affect the normal operation of the unit.

[0006] Therefore, after the single AHP system isolation restart fails, the existing unit control method has the problems of low unit availability and low safety. SUMMARY

[0007] The embodiments of the present application provide a unit control method, device and equipment suitable for third generation pressurized water reactors, which aims to solve the problem of low unit availability and low safety of the existing unit control method after the single AHP system isolation restart fails.

[0008] In a first aspect, an embodiment of the present application provides a unit control method suitable for a third generation pressurized water reactor, the method comprising:

[0009] If it is detected that a single-column AHP system is isolated due to a failure, the feedwater temperature of a secondary loop feedwater system is monitored in real time;

[0010] If the difference in the feedwater temperature in a preset unit time is greater than a preset feedwater deviation value, the real-time operating power of the unit is obtained;

[0011] According to a preset operating control strategy, it is determined whether the real-time operating power meets a preset unit power adjustment condition;

[0012] If yes, the operating power of the unit is adjusted according to a unit power adjustment value in the operating control strategy.

[0013] In a second aspect, an embodiment of the present application further provides a unit control device suitable for a third generation pressurized water reactor, the device comprising:

[0014] A monitoring unit, configured to, if it is detected that a single-column AHP system is isolated due to a failure, monitor the feedwater temperature of a secondary loop feedwater system in real time;

[0015] An obtaining unit, configured to, if the difference in the feedwater temperature in a preset unit time is greater than a preset feedwater deviation value, obtain the real-time operating power of the unit;

[0016] A judging unit, configured to, according to a preset operating control strategy, determine whether the real-time operating power meets a preset unit power adjustment condition;

[0017] An adjusting unit, configured to, if yes, adjust the operating power of the unit according to a unit power adjustment value in the operating control strategy.

[0018] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a memory and a processor, the memory storing a computer program, and the processor implementing the method in the first aspect when executing the computer program.

[0019] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, the storage medium storing a computer program, the computer program comprising program instructions, and the program instructions being executable by a processor to implement the method in the first aspect.

[0020] The application provides a unit control method, device and equipment suitable for a third generation pressurized water reactor, the method comprising: if a single-column AHP system failure isolation is detected, monitoring a feedwater temperature of a secondary loop feedwater system in real time; if a difference of the feedwater temperature in a preset unit time is greater than a preset feedwater deviation value, obtaining a real-time operation power of the unit; judging whether the real-time operation power meets a preset unit power adjustment condition according to a preset operation control strategy; and if yes, adjusting the operation power of the unit according to a unit power adjustment value in the operation control strategy. The embodiment of the application can adjust the operation power of the unit according to the unit power adjustment value in the operation control strategy, effectively improves the availability of the unit operation after the single-column AHP system isolation, and ensures the safety and reliability of the unit operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The flowchart of the unit control method provided by the embodiment of the present application;

[0023] Figure 2 The schematic block diagram of the unit control device provided by the embodiment of the present application;

[0024] Figure 3 The schematic block diagram of the electronic device provided by the embodiment of the present application;

[0025] Figure 4 The application scenario schematic diagram of the unit control method provided by the embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. Embodiments of this invention provide a unit control method, apparatus, and equipment suitable for third-generation pressurized water reactors. Please refer to... Figure 4 , Figure 4 This is a schematic diagram illustrating an application scenario of the unit control method provided in an embodiment of the present invention. The unit control method is applied to the control module of a unit 10, which includes a secondary feedwater system 11, two AHP systems 12, and an evaporator 13. The control module is communicatively connected to the secondary feedwater system 11, the two AHP systems 12, and the evaporator 13. The first end of the secondary feedwater system 11 is simultaneously connected to the first end of each AHP system 12, and the second end of each AHP system 12 is connected to the evaporator 13.

[0030] Figure 1 This is a flowchart illustrating the unit control method provided in an embodiment of the present invention. Figure 1 As shown, the method includes the following steps S110-S140.

[0031] S110. If a fault isolation is detected in a single-row AHP system, the water supply temperature of the secondary water supply system is monitored in real time.

[0032] In this embodiment, the unit includes two parallel AHP systems. If a fault isolation is detected in a single AHP system, the water temperature of the secondary feedwater system is monitored in real time. Specifically, the secondary feedwater system is used to supply high-pressure feedwater heated by the AHP system to the evaporator. The water temperature of the secondary feedwater system can be monitored by a temperature detection device, which is located between the AHP system and the secondary feedwater system.

[0033] S120. If the difference in water temperature within a preset unit time is greater than the preset water deviation value, then the real-time operating power of the unit is obtained.

[0034] In the embodiment, if the difference of the feedwater temperature in the preset unit time is greater than a preset feedwater deviation value, the real-time operation power of the unit is obtained; the preset feedwater deviation value can be set to 10℃; specifically, after the single-row AHP system is isolated due to a fault, if it is detected that the feedwater temperature is reduced by 10℃ in the preset unit time, the real-time operation power of the unit is obtained.

[0035] In the embodiment, whether the real-time operation power meets a preset unit power adjustment condition is determined according to a unit power adjustment value in the operation control strategy; if yes, the operation power of the unit is adjusted according to the unit power adjustment value; if no, the current operation state of the unit is maintained.

[0036] In the embodiment, whether the real-time operation power meets a preset unit power adjustment condition is determined according to a unit power adjustment value in the operation control strategy; if yes, the operation power of the unit is adjusted according to the unit power adjustment value; if no, the current operation state of the unit is maintained.

[0037] In one embodiment, step S130 comprises: determining whether the real-time operation power is greater than a unit power adjustment value in the operation control strategy; if the real-time operation power is greater than the unit power adjustment value, it is determined that the unit power adjustment condition is met; if the real-time operation power is not greater than the unit power adjustment value, it is determined that the unit power adjustment condition is not met.

[0038] In the embodiment, whether the real-time operation power is greater than a unit power adjustment value in the operation control strategy is determined; the unit power adjustment value can be obtained through continuous adjustment and optimization by experiment or simulation, and the unit power adjustment value is 92%FP; if the real-time operation power is greater than the unit power adjustment value, it is determined that the unit power adjustment condition is met; if the real-time operation power is not greater than the unit power adjustment value, it is determined that the unit power adjustment condition is not met.

[0039] In one embodiment, after step S130, it further comprises: if no, the current operation state of the unit is maintained.

[0040] In the embodiment, if the real-time operation power is not greater than the unit power adjustment value, it is determined that the unit power adjustment condition is not met; if the real-time operation power does not meet the unit power adjustment condition, the current operation state of the unit is maintained.

[0041] In the embodiment, if yes, the operation power of the unit is adjusted to 92%FP according to the unit power adjustment value in the operation control strategy to ensure the safe operation of the unit.

[0042] In the embodiment, if yes, the operation power of the unit is adjusted to 92%FP according to the unit power adjustment value in the operation control strategy to ensure the safe operation of the unit.

[0043] Further, after adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy, the method further comprises: regarding a single-column AHP system isolated condition as a normal operation condition, carrying out sensitivity analysis on the condition to obtain a sensitivity analysis result, wherein the sensitivity analysis result comprises a plurality of data sets; if each data set is within a corresponding safety margin, determining that the scheme of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy is feasible; if the scheme of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy is feasible, maintaining the current operation state of the unit; if any data set is not within the corresponding safety margin, determining that the scheme of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy is not feasible; and if the scheme of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy is not feasible, carrying out a shutdown treatment on the unit.

[0044] In an embodiment, after step S140, the method further comprises: restarting the failed AHP system to obtain a restart result; and if the restart result is restart success, adjusting the operation power of the unit according to the unit power set value in the operation control strategy.

[0045] In the embodiment, when the operation power of the unit is lower than the unit power adjustment value, the failed AHP system is restarted to obtain a restart result; if the restart result is restart success, the operation power of the unit is adjusted according to the unit power set value in the operation control strategy; wherein the unit power set value is a normal operation power of the unit, and the unit power set value can be set according to actual application.

[0046] In an embodiment, after restarting the failed AHP system to obtain a restart result, the method further comprises: if the restart result is restart failure, determining relevant safety equipment according to the relevant safety equipment information in the operation control strategy; monitoring a real-time state of each relevant safety equipment to obtain corresponding real-time state information; evaluating each real-time state information according to a DBC accident to obtain a corresponding accident consequence; determining whether each accident consequence satisfies a corresponding safety criterion; if any accident consequence does not satisfy the corresponding safety criterion, carrying out a shutdown treatment on the unit.

[0047] In the embodiment, if the restart result is restart failure, the relevant safety equipment is determined according to the relevant safety equipment information in the operation control strategy; the operation state of each relevant safety equipment is monitored in real time to obtain corresponding real-time state information; each real-time state information is evaluated according to a DBC accident (design basis accident) to obtain corresponding accident consequences; specifically, the DBC accident and each real-time state information can be input into a preset risk evaluation model to obtain the accident consequences corresponding to each real-time state information; whether each accident consequence satisfies the corresponding safety criterion is judged; if any accident consequence does not satisfy the corresponding safety criterion, the unit is handled for shutdown. The embodiment can ensure that the relevant safety equipment can satisfy the corresponding safety criterion in any case by monitoring the operation state of each relevant safety equipment in real time, thereby ensuring the safety and reliability of the unit operation.

[0048] In an embodiment, after the step of judging whether each accident consequence satisfies the corresponding safety criterion, the method further comprises: if each accident consequence satisfies the corresponding safety criterion, returning to the step of monitoring the operation state of each relevant safety equipment in real time to obtain corresponding real-time state information.

[0049] In the embodiment, if each accident consequence satisfies the corresponding safety criterion, the step of monitoring the operation state of each relevant safety equipment in real time to obtain corresponding real-time state information is returned to, thereby ensuring that the relevant safety equipment can satisfy the corresponding safety criterion in any case, and ensuring the safety and reliability of the unit operation.

[0050] In an embodiment, after the step of restarting the fault AHP system to obtain a restart result, the method further comprises: if the restart result is restart failure, determining main equipment according to main equipment information in the operation control strategy; monitoring the operation information of each main equipment at a time to obtain corresponding main equipment operation information; judging whether each main equipment operation information is within the corresponding safety margin; if any main equipment operation information is not within the corresponding safety margin, handling the unit for shutdown.

[0051] In the embodiment, if the restart result is a restart failure, a main device is determined according to main device information in the operation control strategy; the main device can be an evaporator, a water supply connection nozzle, etc.; operation information of each main device is monitored at a fixed time to obtain corresponding main device operation information; whether each main device operation information is within a corresponding safety margin is judged; if any main device operation information is not within the corresponding safety margin, the unit is handled for shutdown; if each main device operation information is within the corresponding safety margin, the step of monitoring the operation information of each main device at a fixed time to obtain the corresponding main device operation information is returned.

[0052] In summary, the embodiment can adjust the operation power of the unit according to the unit power adjustment value in the operation control strategy, effectively improve the availability of the unit after isolation of the single-column AHP system, and ensure the safety and reliability of the unit operation.

[0053] Figure 2 The schematic block diagram of the unit control device provided by the embodiment is shown in FIG. 7. Figure 2 According to the above unit control method applicable to the third generation pressurized water reactor, the application further provides a unit control device applicable to the third generation pressurized water reactor, which is arranged in a control module of the unit, the unit includes a secondary circuit water supply system, two-column AHP systems and an evaporator, the control module is in communication connection with the secondary circuit water supply system, the two-column AHP systems and the evaporator; a first end of the secondary circuit water supply system is connected with a first end of each AHP system, and a second end of each AHP system is connected with the evaporator. Specifically, please refer to FIG. 7. Figure 2 The unit control device 700 applicable to the third generation pressurized water reactor includes:

[0054] A monitoring unit 701 is configured to monitor the water supply temperature of the secondary circuit water supply system in real time if a single-column AHP system is detected to be isolated due to a failure.

[0055] An acquisition unit 702 is configured to acquire the real-time operation power of the unit if a difference of the water supply temperature in a preset unit time is greater than a preset water supply deviation value.

[0056] A judgment unit 703 is configured to judge whether the real-time operation power meets a preset unit power adjustment condition according to a preset operation control strategy.

[0057] An adjustment unit 704 is configured to adjust the operation power of the unit according to a unit power adjustment value in the operation control strategy if the real-time operation power meets the preset unit power adjustment condition.

[0058] In some embodiments, the determining unit 703, in the step of determining whether the real-time operation power meets the preset unit power adjustment condition according to the preset operation control strategy, is specifically configured to:

[0059] determining whether the real-time operation power is greater than the unit power adjustment value in the operation control strategy;

[0060] if the real-time operation power is greater than the unit power adjustment value, determining that the unit power adjustment condition is met;

[0061] if the real-time operation power is not greater than the unit power adjustment value, determining that the unit power adjustment condition is not met.

[0062] In some embodiments, after the step of determining whether the real-time operation power meets the preset unit power adjustment condition according to the preset operation control strategy, the determining unit 703 is further configured to:

[0063] if not met, maintaining the current operation state of the unit.

[0064] In some embodiments, after the step of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy, the adjusting unit 704 is further configured to:

[0065] restarting the fault AHP system to obtain a restart result;

[0066] if the restart result is restart success, adjusting the operation power of the unit according to the unit power setting value in the operation control strategy.

[0067] In some embodiments, after the step of restarting the fault AHP system to obtain a restart result, the adjusting unit 704 is further configured to:

[0068] if the restart result is restart failure, determining relevant safety devices according to the relevant safety device information in the operation control strategy;

[0069] real-time monitoring the operation state of each of the relevant safety devices to obtain corresponding real-time state information;

[0070] evaluating each of the real-time state information according to the DBC accident to obtain corresponding accident consequences;

[0071] determining whether each of the accident consequences meets the corresponding safety criterion;

[0072] if any of the accident consequences does not meet the corresponding safety criterion, performing a shutdown treatment on the unit.

[0073] In some embodiments, the adjusting unit 704 is further configured to:

[0074] If each of the accident consequences satisfies the corresponding safety criterion, the method returns to the step of monitoring the running state of each of the related safety devices in real time to obtain corresponding real-time state information.

[0075] In some embodiments, the adjusting unit 704 is further configured to:

[0076] If the restart result is a restart failure, the main equipment is determined according to the main equipment information in the running control strategy.

[0077] The running information of each of the main equipment is monitored in real time to obtain corresponding main equipment running information.

[0078] It is determined whether each of the main equipment running information is within the corresponding safety margin.

[0079] If any of the main equipment running information is not within the corresponding safety margin, the unit is shut down.

[0080] It should be noted that the above-mentioned specific implementation process of the unit control device and each unit suitable for the third generation pressurized water reactor can be clearly understood by those skilled in the art, which can be referred to the corresponding description in the foregoing method embodiments. For the convenience and brevity of description, it will not be repeated here.

[0081] The unit control device suitable for the third generation pressurized water reactor can be realized in the form of a computer program, which can run on an electronic device as shown in Figure 3 .

[0082] Please refer to Figure 3 , Figure 3 is a schematic block diagram of an electronic device provided by an embodiment of the present application. The electronic device 800 is a control module of a unit, the unit includes a secondary circuit feedwater system, two AHP systems and an evaporator, the control module is in communication connection with the secondary circuit feedwater system, the two AHP systems and the evaporator; the first end of the secondary circuit feedwater system is connected with the first end of each of the AHP systems, and the second end of each of the AHP systems is connected with the evaporator.

[0083] Please refer to Figure 3The electronic device 800 includes a processor 802, a memory, and a network interface 805 connected through a system bus 801, wherein the memory can include a non-volatile storage medium 803 and an internal memory 804.

[0084] The non-volatile storage medium 803 can store an operating system 8031 and a computer program 8032. The computer program 8032 includes program instructions which, when executed, can cause the processor 802 to perform a unit control method suitable for a third generation pressurized water reactor.

[0085] The processor 802 is configured to provide computing and control capabilities to support the operation of the entire electronic device 800.

[0086] The internal memory 804 provides an environment for the execution of the computer program 8032 in the non-volatile storage medium 803, which, when executed by the processor 802, can cause the processor 802 to perform a unit control method suitable for a third generation pressurized water reactor.

[0087] The network interface 805 is configured to communicate with other devices over a network. Those skilled in the art can understand that the structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device 800 to which the scheme of the present application is applied. The specific electronic device 800 can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components. Figure 3

[0088] The processor 802 is configured to run the computer program 8032 stored in the memory to implement the following steps:

[0089] If it is detected that the single-column AHP system is isolated due to a failure, the feedwater temperature of the secondary loop feedwater system is monitored in real time;

[0090] If the difference in the feedwater temperature in a preset unit of time is greater than a preset feedwater deviation value, the real-time operating power of the unit is obtained;

[0091] According to a preset operating control strategy, it is determined whether the real-time operating power meets a preset unit power adjustment condition;

[0092] If so, the operating power of the unit is adjusted according to the unit power adjustment value in the operating control strategy.

[0093] In some embodiments, when implementing the step of determining whether the real-time operating power meets the preset unit power adjustment condition according to the preset operating control strategy, the processor 802 specifically implements the following steps:

[0094] ​determining whether the real-time operation power is greater than a unit power adjustment value in the operation control strategy;

[0095] if the real-time operation power is greater than the unit power adjustment value, determining that the unit power adjustment condition is satisfied;

[0096] if the real-time operation power is not greater than the unit power adjustment value, determining that the unit power adjustment condition is not satisfied.

[0097] In some embodiments, the processor 802, after implementing the step of determining whether the real-time operation power satisfies a preset unit power adjustment condition according to a preset operation control strategy, further implements the following steps:

[0098] if not, maintaining the current operation state of the unit.

[0099] In some embodiments, the processor 802, after implementing the step of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy, further implements the following steps:

[0100] restarting the fault AHP system to obtain a restart result;

[0101] if the restart result is restart success, adjusting the operation power of the unit according to the unit power setting value in the operation control strategy.

[0102] In some embodiments, the processor 802, after implementing the step of restarting the fault AHP system to obtain a restart result, further implements the following steps:

[0103] if the restart result is restart failure, determining relevant safety devices according to relevant safety device information in the operation control strategy.

[0104] real-time monitoring the operation state of each of the relevant safety devices to obtain corresponding real-time state information;

[0105] evaluating each of the real-time state information according to a DBC accident to obtain a corresponding accident consequence;

[0106] determining whether each of the accident consequences satisfies a corresponding safety criterion;

[0107] if any of the accident consequences does not satisfy the corresponding safety criterion, performing a shutdown treatment on the unit.

[0108] In some embodiments, the processor 802, after implementing the step of determining whether each of the accident consequences satisfies a corresponding safety criterion, further implements the following steps:

[0109] If each of the accident consequences satisfies the respective corresponding safety criterion, the step of monitoring the running state of each of the relevant safety devices in real time to obtain corresponding real-time state information is returned to be performed.

[0110] In some embodiments, the processor 802, after implementing the step of restarting the fault AHP system to obtain a restart result, further implements the following steps:

[0111] If the restart result is restart failure, the main device is determined according to the main device information in the running control strategy.

[0112] The running information of each of the main devices is monitored in real time to obtain corresponding main device running information.

[0113] It is determined whether each of the main device running information is within the respective corresponding safety margin.

[0114] If any of the main device running information is not within the corresponding safety margin, the unit is handled to be shut down.

[0115] It should be understood that, in the embodiments of the present application, the processor 802 can be a central processing unit (CPU), and the processor 802 can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0116] It can be understood by those skilled in the art that all or part of the processes in the method of implementing the above embodiments can be completed by a computer program instructing related hardware. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the above-mentioned embodiments of the method.

[0117] Therefore, the present application also provides a storage medium. The storage medium can be a computer readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. The program instructions are executed by the processor to make the processor perform the following steps:

[0118] If the single-channel AHP system is detected to be isolated from failure, the feedwater temperature of the secondary loop feedwater system is monitored in real time;

[0119] If the difference of the feedwater temperature in a preset unit time is greater than a preset feedwater deviation value, the real-time operation power of the unit is obtained;

[0120] According to the preset operation control strategy, it is judged whether the real-time operation power meets a preset unit power adjustment condition;

[0121] If yes, the operation power of the unit is adjusted according to the unit power adjustment value in the operation control strategy.

[0122] In an embodiment, when the processor executes the program instructions to implement the step of judging whether the real-time operation power meets a preset unit power adjustment condition according to a preset operation control strategy, the following steps are implemented:

[0123] It is judged whether the real-time operation power is greater than the unit power adjustment value in the operation control strategy;

[0124] If the real-time operation power is greater than the unit power adjustment value, it is determined that the unit power adjustment condition is met;

[0125] If the real-time operation power is not greater than the unit power adjustment value, it is determined that the unit power adjustment condition is not met.

[0126] In an embodiment, after the processor executes the program instructions to implement the step of judging whether the real-time operation power meets a preset unit power adjustment condition according to a preset operation control strategy, the following steps are implemented:

[0127] If not, the current operation state of the unit is maintained.

[0128] In an embodiment, after the processor executes the program instructions to implement the step of adjusting the operation power of the unit according to the unit power adjustment value in the operation control strategy, the following steps are implemented:

[0129] The failed AHP system is restarted to obtain a restart result;

[0130] If the restart result is restart success, the operation power of the unit is adjusted according to the unit power setting value in the operation control strategy.

[0131] In an embodiment, after the processor executes the program instructions to implement the step of restarting the failed AHP system to obtain a restart result, the following steps are implemented:

[0132] If the restart result is restart failure, determine relevant safety devices according to relevant safety device information in the operation control strategy;

[0133] Real-time monitor operation state of each relevant safety device to obtain corresponding real-time state information;

[0134] Evaluate each real-time state information according to DBC accident to obtain corresponding accident consequence;

[0135] Judge whether each accident consequence satisfies corresponding safety criterion or not;

[0136] If any accident consequence does not satisfy corresponding safety criterion, perform shutdown treatment on the unit.

[0137] In an embodiment, after performing the step of judging whether each accident consequence satisfies corresponding safety criterion or not, the processor further performs the following steps:

[0138] If each accident consequence satisfies corresponding safety criterion, return to the step of real-time monitoring operation state of each relevant safety device to obtain corresponding real-time state information.

[0139] In an embodiment, after performing the step of restarting the fault AHP system to obtain a restart result, the processor further performs the following steps:

[0140] If the restart result is restart failure, determine main devices according to main device information in the operation control strategy;

[0141] Real-time monitor operation information of each main device to obtain corresponding main device operation information;

[0142] Judge whether each main device operation information is within corresponding safety margin or not;

[0143] If any main device operation information is not within corresponding safety margin, perform shutdown treatment on the unit.

[0144] The storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk, and various computer readable storage media that can store program codes.

[0145] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in general terms in the above description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0146] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of each unit is only a logical functional division, and actual implementation can have another division. For example, multiple units or components can be combined or integrated into another system, or some features can be omitted or not executed.

[0147] The steps in the method embodiments of the present application can be adjusted, combined and deleted in sequence according to actual needs. The units in the device embodiments of the present application can be combined, divided and deleted according to actual needs. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0148] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a storage medium. Based on this understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art, or the whole or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions to make an electronic device (which can be a personal computer, terminal or network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.

[0149] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A unit control method applicable to third-generation pressurized water reactors, characterized in that, The method includes: If a fault isolation is detected in a single AHP system, the water temperature of the secondary water supply system is monitored in real time. If the difference in the water supply temperature within a preset unit time is greater than the preset water supply deviation value, then the real-time operating power of the unit is obtained. The real-time operating power is determined according to the preset operation control strategy to determine whether it meets the preset unit power adjustment conditions; If satisfied, the operating power of the unit is adjusted according to the unit power adjustment value in the operation control strategy; After adjusting the operating power of the unit according to the unit power adjustment value in the operation control strategy, the method further includes: Reboot the faulty AHP system and obtain the reboot result; If the restart result is a successful restart, then the operating power of the unit is adjusted according to the unit power setpoint in the operation control strategy; After restarting the faulty AHP system and obtaining the restart result, the process also includes: If the restart result is a restart failure, then the relevant security devices are determined according to the relevant security device information in the operation control strategy; The operating status of each of the relevant safety devices is monitored in real time to obtain the corresponding real-time status information; Each real-time status information is evaluated based on the DBC incident to obtain the corresponding incident consequences; Determine whether each of the aforementioned accident consequences meets its respective safety criteria; If the consequences of any of the aforementioned accidents do not meet the corresponding safety criteria, the unit shall be shut down. After determining whether each of the accident consequences meets its corresponding safety criteria, the process further includes: If each of the aforementioned accident consequences meets its corresponding safety criteria, then the process returns to the step of real-time monitoring of the operating status of each of the relevant safety devices to obtain the corresponding real-time status information.

2. The unit control method applicable to third-generation pressurized water reactors according to claim 1, characterized in that, The step of determining whether the real-time operating power meets the preset unit power adjustment conditions according to the preset operation control strategy includes: Determine whether the real-time operating power is greater than the unit power adjustment value in the operation control strategy; If the real-time operating power is greater than the unit power adjustment value, then the unit power adjustment condition is determined to be met; If the real-time operating power is not greater than the unit power adjustment value, then the unit power adjustment condition is not met.

3. The unit control method applicable to third-generation pressurized water reactors according to claim 1, characterized in that, After determining whether the real-time operating power meets the preset unit power adjustment conditions according to the preset operation control strategy, the method further includes: If the conditions are not met, the current operating status of the unit shall be maintained.

4. The unit control method applicable to third-generation pressurized water reactors according to claim 1, characterized in that, After restarting the faulty AHP system and obtaining the restart result, the process also includes: If the restart result is a restart failure, then the main device is determined according to the main device information in the operation control strategy; The operating information of each of the main devices is monitored periodically to obtain the corresponding main device operating information; Determine whether the operating information of each major device is within its corresponding safety margin. If the operating information of any of the major equipment is not within the corresponding safety margin, the unit shall be shut down.

5. A unit control device suitable for third-generation pressurized water reactors, characterized in that, The device includes: The monitoring unit is used to monitor the water supply temperature of the secondary water supply system in real time if a fault isolation is detected in a single AHP system. The acquisition unit is used to acquire the real-time operating power of the unit if the difference in the feedwater temperature within a preset unit time is greater than a preset feedwater deviation value. The judgment unit is used to determine whether the real-time operating power meets the preset unit power adjustment conditions according to the preset operation control strategy; An adjustment unit is used to adjust the operating power of the unit according to the unit power adjustment value in the operation control strategy if the conditions are met. The adjustment unit is also used to restart the faulty AHP system and obtain a restart result; if the restart result is a successful restart, the operating power of the unit is adjusted according to the unit power setpoint in the operation control strategy. The adjustment unit is further configured to: if the restart result is a restart failure, determine the relevant safety devices based on the relevant safety device information in the operation control strategy; monitor the operating status of each relevant safety device in real time to obtain corresponding real-time status information; evaluate each real-time status information based on the DBC accident to obtain the corresponding accident consequences; determine whether each accident consequence meets its corresponding safety criteria; if any accident consequence does not meet the corresponding safety criteria, shut down the unit. The adjustment unit is further configured to, if each of the accident consequences meets its corresponding safety criteria, return to the step of performing real-time monitoring of the operating status of each of the relevant safety devices to obtain the corresponding real-time status information.

6. An electronic device, characterized in that, The electronic device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which includes program instructions that, when executed by a processor, can implement the method as described in any one of claims 1-4.

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