Steady state adjusting method, device and equipment for thermal hydraulic system of nuclear power plant

Abstract

The invention provides a steady-state regulation method for a thermal hydraulic system of a nuclear power plant, which comprises the following steps of: acquiring a first regulation frequency for regulating a pump rotating speed in the thermal hydraulic system until a primary loop flow meets a preset primary loop flow condition, and a second regulation frequency for regulating a secondary loop pressure until a primary loop average temperature meets a preset temperature condition, adjusting the secondary loop feed water flow until the secondary loop feed water flow meets a third adjustment frequency of a preset secondary loop feed water flow condition, and adjusting the boundary flow of the steam generator until the water level of the steam generator meets a fourth adjustment frequency of a first preset water level condition, and adjusting the boundary flow of the pressure stabilizer until the water level of the pressure stabilizer meets a fifth adjustment frequency of a second preset water level condition, and determining a steady-state adjustment result according to the first adjustment frequency, and / or the second adjustment frequency, and / or the third adjustment frequency, and / or the fourth adjustment frequency, and / or the fifth adjustment frequency. And the steady-state adjusting effect of the thermal hydraulic system of the nuclear power plant is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of nuclear power plant maintenance and management, and in particular to a steady-state regulation method, device, electronic equipment and medium for a thermal hydraulic system of a nuclear power plant. Background Art

[0002] A nuclear power plant is a large project with numerous systems and a complex structure. The best estimate analysis software for loss of coolant accidents in nuclear power plants uses the best estimate analysis method, which requires the calculation of a large number of transient accident conditions. Before the thermal-hydraulic system operates in the accident transient, there is a stabilization process to obtain the target operating state of the nuclear power plant. Since the initial conditions and boundary condition parameters of each set of operating conditions are randomly sampled values ​​within a determined range, when using the thermal-hydraulic system software to obtain the steady-state of the thermal-hydraulic system, nuclear power design engineers are currently required to manually adjust the entire process, which is very time-consuming. Therefore, it is urgent to propose a steady-state adjustment method for the thermal-hydraulic system of nuclear power plants that is applicable to all operating conditions. Summary of the Invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the purpose of the present disclosure is to propose a steady-state regulation method, device, electronic equipment and storage medium for the thermal-hydraulic system of a nuclear power plant, which can realize steady-state regulation of the thermal-hydraulic system under all operating conditions and effectively improve the steady-state regulation effect of the thermal-hydraulic system of a nuclear power plant.

[0005] To achieve the above-mentioned objectives, a first embodiment of the present disclosure provides a steady-state regulation method for a thermal-hydraulic system in a nuclear power plant. The method includes: obtaining a first adjustment number for continuously adjusting a pump speed in the thermal-hydraulic system until a primary circuit flow rate in the thermal-hydraulic system meets a preset primary circuit flow rate condition; obtaining a second adjustment number for continuously adjusting a secondary circuit pressure in the thermal-hydraulic system until an average primary circuit temperature in the thermal-hydraulic system meets a preset temperature condition; obtaining a third adjustment number for continuously adjusting a secondary circuit feedwater flow rate in the thermal-hydraulic system until the secondary circuit feedwater flow rate in the thermal-hydraulic system meets a preset secondary circuit feedwater flow rate condition; obtaining a fourth adjustment number for continuously adjusting a boundary flow rate of a steam generator in the thermal-hydraulic system until a water level in the steam generator meets a first preset water level condition; and obtaining a fifth adjustment number for continuously adjusting a boundary flow rate of a pressurizer in the thermal-hydraulic system until a water level in the pressurizer meets a second preset water level condition; and determining a steady-state regulation result of the thermal-hydraulic system based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

[0006] In order to achieve the above-mentioned purpose, the second embodiment of the present disclosure proposes a steady-state regulation device for a thermal hydraulic system of a nuclear power plant, which includes: a first acquisition module for obtaining a first adjustment number of continuously adjusting the pump speed in the thermal hydraulic system until the primary circuit flow of the thermal hydraulic system meets the preset primary circuit flow condition; a second acquisition module for obtaining a second adjustment number of continuously adjusting the secondary circuit pressure in the thermal hydraulic system until the primary circuit average temperature of the thermal hydraulic system meets the preset temperature condition; a third acquisition module for obtaining a second adjustment number of continuously adjusting the secondary circuit feed water flow of the thermal hydraulic system until the secondary circuit feed water flow of the thermal hydraulic system meets the preset temperature condition. a third adjustment number that satisfies the preset secondary circuit water supply flow condition; a fourth acquisition module, used to obtain the fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal-hydraulic system until the water level of the steam generator meets the first preset water level condition; a fifth acquisition module, used to obtain the fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal-hydraulic system until the water level of the pressurizer meets the second preset water level condition; a determination module, used to determine the steady-state regulation result of the thermal-hydraulic system based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

[0007] The electronic device proposed in the third embodiment of the present disclosure includes: a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the program, it implements the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant proposed in the first embodiment of the present disclosure.

[0008] The fourth embodiment of the present disclosure proposes a non-temporary computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it implements the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant proposed in the first embodiment of the present disclosure.

[0009] The fifth embodiment of the present disclosure proposes a computer program product. When the instructions in the computer program product are executed by a processor, the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant proposed in the first embodiment of the present disclosure is executed.

[0010] The present disclosure provides a steady-state regulation method, device, electronic device and storage medium for a thermal hydraulic system of a nuclear power plant, comprising: obtaining a first adjustment number of continuously adjusting the pump speed in the thermal hydraulic system until the primary circuit flow of the thermal hydraulic system meets a preset primary circuit flow condition; obtaining a second adjustment number of continuously adjusting the secondary circuit pressure in the thermal hydraulic system until the primary circuit average temperature of the thermal hydraulic system meets a preset temperature condition; obtaining a third adjustment number of continuously adjusting the secondary circuit feed water flow of the thermal hydraulic system until the secondary circuit feed water flow of the thermal hydraulic system meets the preset secondary circuit feed water flow ... The boundary flow of the steam generator in the hydraulic system is continuously adjusted until the fourth adjustment number when the water level of the steam generator meets the first preset water level condition, and the boundary flow of the pressurizer in the thermal-hydraulic system is continuously adjusted until the water level of the pressurizer meets the second preset water level condition. The fifth adjustment number is obtained, and then the steady-state regulation result of the thermal-hydraulic system is determined based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number. In this way, steady-state regulation of the thermal-hydraulic system under all operating conditions can be achieved, effectively improving the steady-state regulation effect of the thermal-hydraulic system of the nuclear power plant.

[0011] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0013] Figure 1 This is a flow chart of a steady-state regulation method for a thermal hydraulic system of a nuclear power plant proposed in one embodiment of the present disclosure;

[0014] Figure 2 is a flow chart of a steady-state regulation method for a thermal-hydraulic system of a nuclear power plant proposed in another embodiment of the present disclosure;

[0015] Figure 3 This is a structural diagram of a steady-state regulating device for a thermal hydraulic system of a nuclear power plant proposed in one embodiment of the present disclosure;

[0016] Figure 4 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present disclosure and are not to be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0018] Figure 1 It is a flow chart of a steady-state regulation method for a thermal hydraulic system of a nuclear power plant proposed in one embodiment of the present disclosure.

[0019] It should be noted that the executor of the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant in this embodiment is a steady-state regulation device for the thermal-hydraulic system of a nuclear power plant. The device can be implemented by software and / or hardware. The device can be configured in an electronic device. The electronic device can include but is not limited to a terminal, a server, etc. For example, the terminal can be a mobile phone, a handheld computer, etc.

[0020] like Figure 1 As shown, the steady-state regulation method for the thermal hydraulic system of a nuclear power plant includes:

[0021] S101: Obtaining a first number of adjustments for continuously adjusting a pump speed in a thermal hydraulic system until a primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition.

[0022] It can be understood that the regulation of the steady-state primary circuit flow is related to the regulation of the circuit's pump speed. For any pump, ignoring losses, the flow rate discharged per revolution of the pump is fixed according to its current displacement. Therefore, the primary circuit flow rate at the pump outlet is equal to the speed multiplied by the displacement. Therefore, the regulation of the primary circuit flow rate of the thermal hydraulic system can be achieved by changing the circuit's pump speed.

[0023] Optionally, in some embodiments, obtaining a first adjustment number for continuously adjusting the pump speed in the thermal-hydraulic system until the primary-circuit flow rate of the thermal-hydraulic system meets a preset primary-circuit flow rate condition can be performed by obtaining a reference primary-circuit flow rate of the thermal-hydraulic system, and the first primary-circuit flow rate and the first pump speed during the first cycle, adjusting the first pump speed based on a preset speed increment, and controlling the thermal-hydraulic system to operate at the adjusted first pump speed to obtain the second primary-circuit flow rate of the thermal-hydraulic system during the second cycle, and then determining a first flow rate difference between the second primary-circuit flow rate and the first primary-circuit flow rate, and a second flow rate difference between the reference primary-circuit flow rate and the second primary-circuit flow rate, and then determining the preset speed increment. The method further comprises: determining a first ratio between the speed increment and the first flow difference, determining a first product between the first ratio and the second flow difference, updating the first pump speed based on the first product, and continuing to perform the steps of adjusting the first pump speed based on the preset speed increment based on the updated first pump speed, and controlling the thermal-hydraulic system to operate at the adjusted first pump speed to obtain a third primary-circuit flow, and when a second ratio between a third flow difference between the third primary-circuit flow and the reference primary-circuit flow and the reference primary-circuit flow is greater than a first threshold, returning to the step of adjusting the first pump speed based on the preset speed increment until the second ratio is less than the first threshold, and then obtaining a first adjustment number of adjusting the first pump speed based on the preset speed increment.

[0024] S102: Obtain a second number of adjustments for continuously adjusting the pressure of the secondary circuit in the thermal hydraulic system until the average temperature of the primary circuit of the thermal hydraulic system meets a preset temperature condition.

[0025] Understandably, the primary and secondary systems of a nuclear power plant are completely separate. The primary circuit is a closed circulation system. In the primary circuit, the main pump delivers high-pressure coolant to the reactor. This coolant carries the heat released by the nuclear fuel out of the reactor without vaporizing. It then enters the steam generator, where it transfers heat through heat transfer tubes to the secondary circuit outside the tubes. The feedwater in the secondary circuit flows through the steam generator, where it is converted into steam, driving the steam turbine generator set to generate electricity. The steam, having completed work, condenses into water in the condenser. This water is then pumped by the condensate feedwater pump to the heater, where it is reheated and returned to the steam generator.

[0026] Among them, the regulation of the secondary circuit pressure in the thermal hydraulic system affects the average temperature of the primary circuit, and the primary circuit average temperature is the average of the primary circuit reactor inlet temperature and outlet temperature.

[0027] Optionally, in some embodiments, obtaining a second adjustment number for continuously adjusting the secondary circuit pressure in the thermal-hydraulic system until the primary circuit average temperature of the thermal-hydraulic system meets a preset temperature condition can be performed by obtaining a reference primary circuit average temperature of the thermal-hydraulic system, and determining a first primary circuit average temperature of the thermal-hydraulic system based on an initial secondary circuit pressure value of the thermal-hydraulic system, and then adjusting the initial secondary circuit pressure value based on a preset pressure increment, and controlling the thermal-hydraulic system to operate with the adjusted initial secondary circuit pressure value to obtain a second primary circuit average temperature of the thermal-hydraulic system, and then determining a first temperature difference between the first primary circuit average temperature and the second primary circuit average temperature, and a second temperature difference between the reference primary circuit average temperature and the second primary circuit average temperature, and then determining the first temperature difference. The method further comprises: determining a third ratio between the temperature difference and the preset pressure increment, determining a second product between the third ratio and the second temperature difference, updating the initial secondary-circuit pressure value based on the second product, and continuing to perform the steps of adjusting the initial secondary-circuit pressure value based on the preset pressure increment based on the updated initial secondary-circuit pressure value, and controlling the thermal-hydraulic system to operate at the adjusted initial secondary-circuit pressure value, so as to obtain a third primary-circuit average temperature, and when a fourth ratio between a third temperature difference between the third primary-circuit average temperature and the reference primary-circuit average temperature and the reference primary-circuit average temperature is greater than a second threshold, returning to the step of adjusting the initial secondary-circuit pressure value based on the preset pressure increment until the fourth ratio is less than the second threshold, and obtaining a second adjustment number of adjusting the initial secondary-circuit pressure value based on the preset pressure increment.

[0028] S103: Obtaining a third adjustment number for continuously adjusting the secondary circuit water supply flow of the thermal hydraulic system until the secondary circuit water supply flow of the thermal hydraulic system meets a preset secondary circuit water supply flow condition.

[0029] It can be understood that since the heat production of the first circuit in the thermal hydraulic system is fixed under steady-state conditions, and the feed water temperature of the second circuit system is given, the outlet steam temperature of the second circuit system is related to the second circuit pressure. Therefore, the regulation of the second circuit feed water flow is related to the second circuit outlet steam flow.

[0030] Optionally, in some embodiments, obtaining a third adjustment number for continuously adjusting the secondary-circuit water feed flow of the thermal-hydraulic system until the secondary-circuit water feed flow of the thermal-hydraulic system meets the preset secondary-circuit water feed flow condition can be performed by obtaining a reference secondary-circuit water feed flow of the thermal-hydraulic system, and the first and second-circuit water feed flow and the first and second-circuit steam flow during the first cycle, and then adjusting the first and second-circuit water feed flow based on the preset water feed flow increment, and controlling the thermal-hydraulic system to operate with the adjusted first and second-circuit water feed flow to obtain the second and second-circuit steam flow during the second cycle of the thermal-hydraulic system, and then determining a first water feed flow difference between the first and second-circuit water feed flow and the second and second-circuit water feed flow, and a second water feed flow difference between the reference and second-circuit water feed flow, and then determining the preset water feed flow The method further comprises the steps of: determining a fifth ratio between the quantity increment and the first water supply flow difference, determining a third product between the fifth ratio and the second water supply flow difference, updating the first and second circuit water supply flows based on the third product, and continuing to execute the steps of adjusting the first and second circuit water supply flows based on the preset water supply flow increment based on the updated first and second circuit water supply flows, and controlling the thermal-hydraulic system to operate with the adjusted first and second circuit water supply flows to obtain the third second circuit water supply flow; and when the third water supply flow difference between the third second circuit water supply flow and the reference second circuit water supply flow and the sixth ratio between the reference second circuit water supply flow are greater than the third threshold value, returning to the step of adjusting the first and second circuit water supply flows based on the preset water supply flow increment until the sixth ratio is less than the third threshold value, and then obtaining the third adjustment number of adjusting the first and second circuit water supply flows based on the preset water supply flow increment.

[0031] S104: Obtaining a fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets the first preset water level condition.

[0032] It can be understood that the regulation of the steady-state steam generator secondary side water level is related to the regulation of the steam generator secondary side water charge, and the steam generator secondary side water charge is related to the cavitation fraction in the steam generator secondary side. The implementation method is to adjust by injecting or draining water under given boundary conditions.

[0033] Optionally, in some embodiments, obtaining a fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal-hydraulic system until the water level of the steam generator meets the first preset water level condition can be performed by obtaining the first water level value, the first reference water level value and the first boundary flow of the steam generator during the second cycle of the thermal-hydraulic system, adjusting the first boundary flow based on the first preset boundary flow, and controlling the thermal-hydraulic system to operate with the adjusted first boundary flow to obtain the second water level value of the steam generator, and then determining a first water level difference between the first water level value and the second water level value, and a second water level difference between the first reference water level value and the second water level value, and then determining the first preset boundary flow and the first water level difference. The method further comprises the steps of determining a seventh ratio between the third water level value and the first reference water level value, determining a fourth product between the seventh ratio and the second water level difference, updating the first boundary flow rate based on the fourth product, and continuing to execute the steps of adjusting the first boundary flow rate based on the first preset boundary flow rate based on the updated first boundary flow rate, and controlling the thermal-hydraulic system to operate with the adjusted first boundary flow rate to obtain a third water level value of the steam generator. When the eighth ratio between the third water level value and the first reference water level value and the first reference water level value is greater than the fourth threshold value, returning to the step of adjusting the first boundary flow rate based on the first preset boundary flow rate until the eighth ratio is less than the fourth threshold value, and then obtaining the fourth adjustment number of adjusting the first boundary flow rate based on the first preset boundary flow rate.

[0034] S105: Obtaining a fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets a second preset water level condition.

[0035] It is understood that the adjustment of the steady-state pressurizer water level is related to the adjustment of the pressurizer water volume, which is achieved by injecting or draining water under given boundary conditions. Therefore, the adjustment of the steady-state flow rate can be achieved by changing the boundary flow rate.

[0036] Optionally, in some embodiments, obtaining a fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal-hydraulic system until the water level of the pressurizer meets the second preset water level condition can be performed by obtaining a fourth water level value, a second reference water level value and a second boundary flow of the pressurizer during the second cycle of the thermal-hydraulic system, and then adjusting the second boundary flow based on the second preset boundary flow, and controlling the thermal-hydraulic system to operate at the adjusted second boundary flow to obtain a fifth water level value of the steam generator, and then determining a fourth water level difference between the fourth water level value and the fifth water level value, and a fifth water level difference between the second reference water level value and the fifth water level value, and then determining a difference between the second preset boundary flow and the third water level difference. and the ninth ratio between the ninth ratio and the fifth water level difference, and then determine the fifth product between the ninth ratio and the fifth water level difference, and then update the second boundary flow based on the fifth product, and continue to execute the step of adjusting the second boundary flow based on the second preset boundary flow based on the updated second boundary flow, and control the thermal-hydraulic system to operate with the adjusted second boundary flow to obtain the sixth water level value of the steam generator. When the tenth ratio between the sixth water level difference between the sixth water level value and the second reference water level value and the reference water level value is greater than the fifth threshold, return to execute the step of adjusting the second boundary flow based on the second preset boundary flow until the tenth ratio is less than the fifth threshold, and then obtain the fifth adjustment number of adjusting the second boundary flow based on the second preset boundary flow.

[0037] S106: Determine a steady-state adjustment result of the thermal-hydraulic system according to the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

[0038] After obtaining the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number, the embodiment of the present disclosure can determine the steady-state regulation result of the thermal-hydraulic system.

[0039] In the embodiment of the present disclosure, the steady-state regulation result of the thermal-hydraulic system is determined based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number. It can be that when any of the aforementioned adjustment numbers is greater than the corresponding number threshold, it is determined that the thermal-hydraulic system has not completed steady-state regulation, and when each of the aforementioned adjustment numbers is greater than the corresponding number threshold, it is determined that the thermal-hydraulic system has completed steady-state regulation.

[0040] In the embodiment of the present disclosure, the pump speed in the thermal hydraulic system is continuously adjusted until the flow rate of the first circuit of the thermal hydraulic system meets the preset flow rate condition of the first circuit, the second adjustment number of the pressure of the second circuit in the thermal hydraulic system is continuously adjusted until the average temperature of the first circuit of the thermal hydraulic system meets the preset temperature condition, the third adjustment number of the feed water flow of the second circuit of the thermal hydraulic system is continuously adjusted until the feed water flow of the second circuit of the thermal hydraulic system meets the preset feed water flow condition of the second circuit, and the boundary flow of the steam generator in the thermal hydraulic system is obtained. Continuous adjustments are made until the fourth adjustment number when the water level of the steam generator meets the first preset water level condition, and the fifth adjustment number of continuous adjustments to the boundary flow of the pressurizer in the thermal-hydraulic system is obtained until the water level of the pressurizer meets the second preset water level condition, and then the steady-state regulation result of the thermal-hydraulic system is determined based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number. In this way, steady-state regulation of the thermal-hydraulic system under all operating conditions can be achieved, effectively improving the steady-state regulation effect of the thermal-hydraulic system of the nuclear power plant.

[0041] Figure 2 It is a flow chart of a steady-state regulation method for a thermal-hydraulic system of a nuclear power plant proposed in another embodiment of the present disclosure.

[0042] like Figure 2 As shown, the steady-state regulation method for the thermal hydraulic system of a nuclear power plant includes:

[0043] S201: Obtaining a first number of adjustments for continuously adjusting a pump speed in a thermal hydraulic system until a primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition.

[0044] S202: Obtain a second number of adjustments for continuously adjusting the pressure of the secondary circuit in the thermal hydraulic system until the average temperature of the primary circuit of the thermal hydraulic system meets a preset temperature condition.

[0045] S203: Obtaining a third adjustment number for continuously adjusting the secondary circuit water flow of the thermal hydraulic system until the secondary circuit water flow of the thermal hydraulic system meets a preset secondary circuit water flow condition.

[0046] S204: Obtaining a fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets the first preset water level condition.

[0047] S205: Obtaining a fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets a second preset water level condition.

[0048] The detailed description of S201 - S205 can be found in the above embodiment and will not be repeated here.

[0049] S206: Obtain a first number threshold, a second number threshold, a third number threshold, a fourth number threshold, and a fifth number threshold.

[0050] Among them, the number threshold pre-set for the first adjustment number is the first number threshold, the number threshold pre-set for the second adjustment number is the second number threshold, the number threshold pre-set for the third adjustment number is the third number threshold, the number threshold pre-set for the fourth adjustment number is the fourth number threshold, and the number threshold pre-set for the fifth adjustment number is the fifth number threshold. Each of the aforementioned number thresholds can be adaptively set in combination with the steady-state adjustment requirements in the actual business scenario, and there is no restriction on this.

[0051] S207: If the first adjustment number is greater than the first number threshold, or the second adjustment number is greater than the second number threshold, or the third adjustment number is greater than the third number threshold, or the fourth adjustment number is greater than the fourth number threshold, or the fifth adjustment number is greater than the fifth number threshold, then it is determined that the steady-state condition result is that the thermal-hydraulic system has not completed steady-state regulation.

[0052] After obtaining the first number threshold, the second number threshold, the third number threshold, the fourth number threshold and the fifth number threshold, the embodiment of the present disclosure can compare the number threshold with the corresponding adjustment number, and when the first adjustment number is greater than the first number threshold, or the second adjustment number is greater than the second number threshold, or the third adjustment number is greater than the third number threshold, or the fourth adjustment number is greater than the fourth number threshold, or the fifth adjustment number is greater than the fifth number threshold, it is determined that the steady-state condition result is that the thermal-hydraulic system has not completed steady-state regulation.

[0053] S208: If the first adjustment number is less than or equal to the first number threshold, and the second adjustment number is less than or equal to the second number threshold, and the third adjustment number is less than or equal to the third number threshold, and the fourth adjustment number is less than or equal to the fourth number threshold, and the fifth adjustment number is less than or equal to the fifth number threshold, then the steady-state condition result is determined to be that the thermal-hydraulic system has completed steady-state regulation.

[0054] After obtaining the first number threshold, the second number threshold, the third number threshold, the fourth number threshold and the fifth number threshold, the embodiment of the present disclosure can compare the number threshold with the corresponding adjustment number, and when the first adjustment number is less than or equal to the first number threshold, and the second adjustment number is less than or equal to the second number threshold, and the third adjustment number is less than or equal to the third number threshold, and the fourth adjustment number is less than or equal to the fourth number threshold, and the fifth adjustment number is less than or equal to the fifth number threshold, it is determined that the steady-state condition result is that the thermal-hydraulic system has completed steady-state regulation.

[0055] In the embodiment of the present disclosure, the first adjustment number of continuously adjusting the pump speed in the thermal-hydraulic system until the flow rate of the first circuit of the thermal-hydraulic system meets the preset flow rate condition of the first circuit is obtained, the second adjustment number of continuously adjusting the pressure of the second circuit in the thermal-hydraulic system until the average temperature of the first circuit of the thermal-hydraulic system meets the preset temperature condition is obtained, the third adjustment number of continuously adjusting the water supply flow of the second circuit of the thermal-hydraulic system until the water supply flow of the second circuit of the thermal-hydraulic system meets the preset water supply flow condition of the second circuit is obtained, the fourth adjustment number of continuously adjusting the boundary flow of the steam generator in the thermal-hydraulic system until the water level of the steam generator meets the first preset water level condition is obtained, the fifth adjustment number of continuously adjusting the boundary flow of the pressurizer in the thermal-hydraulic system until the water level of the pressurizer meets the second preset water level condition is obtained, and then the first number threshold, the second number threshold, the third number threshold, and the fourth number threshold are obtained. The fourth number threshold and the fifth number threshold, and when the first adjustment number is greater than the first number threshold, or the second adjustment number is greater than the second number threshold, or the third adjustment number is greater than the third number threshold, or the fourth adjustment number is greater than the fourth number threshold, or the fifth adjustment number is greater than the fifth number threshold, it is determined that the steady-state condition result is that the thermal-hydraulic system has not completed steady-state regulation; when the first adjustment number is less than or equal to the first number threshold, and the second adjustment number is less than or equal to the second number threshold, and the third adjustment number is less than or equal to the third number threshold, and the fourth adjustment number is less than or equal to the fourth number threshold, and the fifth adjustment number is less than or equal to the fifth number threshold, it is determined that the steady-state condition result is that the thermal-hydraulic system has completed steady-state regulation. Therefore, it is possible to accurately determine whether the thermal-hydraulic system has achieved steady-state regulation. Therefore, it is possible to achieve steady-state regulation of the thermal-hydraulic system under all operating conditions, and effectively improve the steady-state regulation effect of the thermal-hydraulic system of the nuclear power plant.

[0056] Figure 3 It is a structural schematic diagram of a steady-state regulating device for a thermal hydraulic system of a nuclear power plant proposed in one embodiment of the present disclosure.

[0057] like Figure 3 As shown, the steady-state regulating device 30 for the thermal hydraulic system of a nuclear power plant includes:

[0058] The first acquisition module 301 is used to acquire a first number of adjustments for continuously adjusting the pump speed in the thermal hydraulic system until the primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition;

[0059] The second acquisition module 302 is used to obtain a second number of adjustments for continuously adjusting the pressure of the secondary circuit in the thermal hydraulic system until the average temperature of the primary circuit of the thermal hydraulic system meets a preset temperature condition;

[0060] The third acquisition module 303 is used to obtain a third number of adjustments for continuously adjusting the secondary circuit water flow of the thermal hydraulic system until the secondary circuit water flow of the thermal hydraulic system meets a preset secondary circuit water flow condition;

[0061] A fourth acquisition module 304 is configured to acquire a fourth number of adjustments for continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets the first preset water level condition;

[0062] A fifth obtaining module 305 is configured to obtain a fifth number of adjustments for continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets a second preset water level condition;

[0063] The determination module 306 is configured to determine a steady-state regulation result of the thermal-hydraulic system according to the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

[0064] In some embodiments of the present disclosure, the first acquisition module 301 is further configured to:

[0065] Obtaining a reference primary circuit flow rate of the thermal hydraulic system, and a first primary circuit flow rate and a first pump speed during a first cycle;

[0066] adjusting the speed of the first pump based on a preset speed increment, and controlling the thermal-hydraulic system to operate at the adjusted first pump speed to obtain a second primary circuit flow rate of the thermal-hydraulic system during a second circulation process;

[0067] determining a first flow rate difference between the second primary circuit flow rate and the first primary circuit flow rate, and a second flow rate difference between the reference primary circuit flow rate and the second primary circuit flow rate;

[0068] determining a first ratio between a predetermined speed increment and a first flow rate difference;

[0069] determining a first product between the first ratio and the second flow rate difference;

[0070] updating the first pump speed based on the first product, and continuing to perform the steps of adjusting the first pump speed based on the preset speed increment based on the updated first pump speed, and controlling the thermal-hydraulic system to operate at the adjusted first pump speed, so as to obtain a third primary circuit flow rate;

[0071] If a second ratio of a third flow difference between the third primary circuit flow rate and the reference primary circuit flow rate to the reference primary circuit flow rate is greater than a first threshold, returning to the step of adjusting the first pump speed based on the preset speed increment until the second ratio is less than the first threshold;

[0072] A first adjustment number of times of adjusting the speed of the first pump based on a preset speed increment is obtained.

[0073] In some embodiments of the present disclosure, the second acquisition module 302 is further configured to:

[0074] Obtain the reference primary circuit average temperature of the thermal hydraulic system;

[0075] Determine the average temperature of the first circuit of the thermal hydraulic system based on the initial secondary circuit pressure value of the thermal hydraulic system;

[0076] adjusting an initial secondary circuit pressure value based on a preset pressure increment, and controlling the thermal hydraulic system to operate at the adjusted initial secondary circuit pressure value to obtain a second primary circuit average temperature of the thermal hydraulic system;

[0077] determining a first temperature difference between the first primary circuit average temperature and the second primary circuit average temperature, and a second temperature difference between the reference primary circuit average temperature and the second primary circuit average temperature;

[0078] determining a third ratio between the first temperature difference and the predetermined pressure increment;

[0079] determining a second product between the third ratio and the second temperature difference;

[0080] updating the initial secondary circuit pressure value based on the second product, and continuing to perform the steps of adjusting the initial secondary circuit pressure value based on the preset pressure increment and controlling the thermal-hydraulic system to operate at the adjusted initial secondary circuit pressure value based on the updated initial secondary circuit pressure value, so as to obtain a third primary circuit average temperature;

[0081] If a fourth ratio of a third temperature difference between the third primary circuit average temperature and the reference primary circuit average temperature to the reference primary circuit average temperature is greater than the second threshold, returning to the step of adjusting the initial secondary circuit pressure value based on the preset pressure increment until the fourth ratio is less than the second threshold;

[0082] A second adjustment number for adjusting the initial secondary circuit pressure value based on a preset pressure increment is obtained.

[0083] In some embodiments of the present disclosure, the third acquisition module 303 is further configured to:

[0084] Obtain the reference secondary circuit feedwater flow rate of the thermal hydraulic system, as well as the primary and secondary circuit feedwater flow rates and primary and secondary circuit steam flow rates during the first cycle;

[0085] Adjusting the feedwater flow rates of the first and second circuits based on a preset feedwater flow increment, and controlling the thermal-hydraulic system to operate at the adjusted feedwater flow rates of the first and second circuits to obtain the steam flow rates of the second and second circuits of the thermal-hydraulic system during the second cycle;

[0086] determining a first water supply flow rate difference between the first secondary circuit water supply flow rate and the second secondary circuit water supply flow rate, and a second water supply flow rate difference between the reference secondary circuit water supply flow rate and the second secondary circuit water supply flow rate;

[0087] determining a fifth ratio between the preset feedwater flow rate increment and the first feedwater flow rate difference;

[0088] determining a third product between the fifth ratio and the second feedwater flow difference;

[0089] The first and second circuit water flow rates are updated based on the third product, and based on the updated first and second circuit water flow rates, the steps of adjusting the first and second circuit water flow rates based on the preset water flow rate increment and controlling the thermal-hydraulic system to operate at the adjusted first and second circuit water flow rates are continued to be performed to obtain a third second circuit water flow rate;

[0090] If a third water supply flow rate difference between the third secondary circuit water supply flow rate and the reference secondary circuit water supply flow rate and a sixth ratio between the reference secondary circuit water supply flow rate and the reference secondary circuit water supply flow rate is greater than a third threshold, returning to the step of adjusting the first secondary circuit water supply flow rate based on the preset water supply flow rate increment until the sixth ratio is less than the third threshold;

[0091] Obtain a third adjustment number of times for adjusting the water supply flow of the first and second circuits based on a preset water supply flow increment.

[0092] In some embodiments of the present disclosure, the fourth obtaining module 304 is further configured to:

[0093] Obtaining a first water level value, a first reference water level value, and a first boundary flow rate of a steam generator during a second cycle of the thermal hydraulic system;

[0094] adjusting the first boundary flow rate based on the first preset boundary flow rate, and controlling the thermal hydraulic system to operate at the adjusted first boundary flow rate to obtain a second water level value of the steam generator;

[0095] determining a first water level difference between the first water level value and the second water level value, and a second water level difference between the first reference water level value and the second water level value;

[0096] determining a seventh ratio between the first preset boundary flow rate and the first water level difference;

[0097] determining a fourth product between the seventh ratio and the second water level difference;

[0098] updating the first boundary flow rate based on the fourth product, and continuing to perform the steps of adjusting the first boundary flow rate based on the first preset boundary flow rate and controlling the thermal-hydraulic system to operate at the adjusted first boundary flow rate based on the updated first boundary flow rate, so as to obtain a third water level value of the steam generator;

[0099] If an eighth ratio of a third water level difference between the third water level value and the first reference water level value to the first reference water level value is greater than a fourth threshold, returning to the step of adjusting the first boundary flow rate based on the first preset boundary flow rate until the eighth ratio is less than the fourth threshold value;

[0100] A fourth adjustment number of times of adjusting the first boundary flow based on the first preset boundary flow is obtained.

[0101] In some embodiments of the present disclosure, the fifth obtaining module 305 is further configured to:

[0102] Obtaining a fourth water level value, a second reference water level value, and a second boundary flow rate of the pressurizer during the second circulation process of the thermal hydraulic system;

[0103] adjusting the second boundary flow rate based on the second preset boundary flow rate, and controlling the thermal hydraulic system to operate at the adjusted second boundary flow rate to obtain a fifth water level value of the steam generator;

[0104] determining a fourth water level difference between the fourth water level value and the fifth water level value, and a fifth water level difference between the second reference water level value and the fifth water level value;

[0105] determining a ninth ratio between the second preset boundary flow rate and the third water level difference;

[0106] determining a fifth product between the ninth ratio and the fifth water level difference;

[0107] updating the second boundary flow rate based on the fifth product, and continuing to perform the steps of adjusting the second boundary flow rate based on the second preset boundary flow rate based on the updated second boundary flow rate, and controlling the thermal-hydraulic system to operate at the adjusted second boundary flow rate, so as to obtain a sixth water level value of the steam generator;

[0108] If a tenth ratio of a sixth water level difference between the sixth water level value and the second reference water level value to the reference water level value is greater than the fifth threshold, returning to the step of adjusting the second boundary flow rate based on the second preset boundary flow rate until the tenth ratio is less than the fifth threshold;

[0109] A fifth adjustment number of times of adjusting the second boundary flow rate based on the second preset boundary flow rate is obtained.

[0110] In some embodiments of the present disclosure, the determination module 306 is further configured to:

[0111] Obtain a first count threshold, a second count threshold, a third count threshold, a fourth count threshold, and a fifth count threshold;

[0112] If the first adjustment number is greater than a first number threshold, or the second adjustment number is greater than a second number threshold, or the third adjustment number is greater than a third number threshold, or the fourth adjustment number is greater than a fourth number threshold, or the fifth adjustment number is greater than a fifth number threshold, determining that the steady-state condition result is that the thermal-hydraulic system has not completed steady-state regulation;

[0113] If the first adjustment number is less than or equal to the first number threshold, and the second adjustment number is less than or equal to the second number threshold, and the third adjustment number is less than or equal to the third number threshold, and the fourth adjustment number is less than or equal to the fourth number threshold, and the fifth adjustment number is less than or equal to the fifth number threshold, then the steady-state condition result is determined to be that the thermal-hydraulic system has completed steady-state regulation.

[0114] It should be noted that the aforementioned explanation of the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant is also applicable to the steady-state regulation device for the thermal-hydraulic system of a nuclear power plant in this embodiment, and will not be repeated here.

[0115] In the embodiment of the present disclosure, the pump speed in the thermal hydraulic system is continuously adjusted until the flow rate of the first circuit of the thermal hydraulic system meets the preset flow rate condition of the first circuit, the second adjustment number of the pressure of the second circuit in the thermal hydraulic system is continuously adjusted until the average temperature of the first circuit of the thermal hydraulic system meets the preset temperature condition, the third adjustment number of the feed water flow of the second circuit of the thermal hydraulic system is continuously adjusted until the feed water flow of the second circuit of the thermal hydraulic system meets the preset feed water flow condition of the second circuit, and the boundary flow of the steam generator in the thermal hydraulic system is obtained. Continuous adjustments are made until the fourth adjustment number when the water level of the steam generator meets the first preset water level condition, and the fifth adjustment number of continuous adjustments to the boundary flow of the pressurizer in the thermal-hydraulic system is obtained until the water level of the pressurizer meets the second preset water level condition, and then the steady-state regulation result of the thermal-hydraulic system is determined based on the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number. In this way, steady-state regulation of the thermal-hydraulic system under all operating conditions can be achieved, effectively improving the steady-state regulation effect of the thermal-hydraulic system of the nuclear power plant.

[0116] Figure 4A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. Figure 4 The electronic device 12 shown is only an example and should not limit the functionality and scope of use of the embodiments of the present disclosure.

[0117] like Figure 4 As shown, electronic device 12 is implemented as a general-purpose computing device. Components of electronic device 12 may include, but are not limited to, one or more processors or processing units 16, system memory 28, and a bus 18 that connects various system components (including system memory 28 and processing unit 16).

[0118] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of such architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnection (PCI) bus.

[0119] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0120] The memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be configured to read and write non-removable, non-volatile magnetic media ( Figure 4 Not shown, often called a "hard drive").

[0121] although Figure 4Although not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a Compact Disc Read Only Memory (hereinafter referred to as: CD-ROM), a Digital Video Disc Read Only Memory (hereinafter referred to as: DVD-ROM), or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the various embodiments of the present disclosure.

[0122] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 42 generally implement the functions and / or methods of the embodiments described herein.

[0123] The electronic device 12 can also communicate with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), one or more devices that enable human interaction with the electronic device 12, and / or any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). This communication can occur via an input / output (I / O) interface 22. Furthermore, the electronic device 12 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 via a bus 18. It should be understood that, although not shown, other hardware and / or software modules can be used in conjunction with the electronic device 12, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0124] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant mentioned in the above embodiment.

[0125] In order to implement the above embodiments, the present disclosure also proposes a non-temporary computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it implements the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant proposed in the above embodiments of the present disclosure.

[0126] In order to implement the above embodiments, the present disclosure further proposes a computer program product. When the instruction processor in the computer program product executes, the steady-state regulation method for the thermal-hydraulic system of a nuclear power plant proposed in the above embodiments of the present disclosure is executed.

[0127] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow from the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0128] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0129] It should be noted that, in the description of this disclosure, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of this disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0130] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0131] It should be understood that various parts of the present disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0132] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0133] In addition, the functional units in the various embodiments of the present disclosure may be integrated into a single processing module, or each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

[0134] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0135] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0136] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A steady-state regulation method for a thermal hydraulic system in a nuclear power plant, characterized in that: The method comprises: Obtaining a first adjustment number of continuously adjusting the pump speed in the thermal hydraulic system until a primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition; Obtaining a second adjustment number for continuously adjusting the pressure of the second circuit in the thermal hydraulic system until the average temperature of the first circuit of the thermal hydraulic system meets a preset temperature condition; Obtaining a third adjustment number for continuously adjusting the secondary circuit water supply flow of the thermal hydraulic system until the secondary circuit water supply flow of the thermal hydraulic system meets a preset secondary circuit water supply flow condition; Acquire a fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets a first preset water level condition; Acquire a fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets a second preset water level condition; The steady-state regulation result of the thermal-hydraulic system is determined according to the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

2. The method according to claim 1, characterized in that The step of obtaining a first adjustment number of continuously adjusting the pump speed in the thermal hydraulic system until a primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition includes: Obtaining a reference primary circuit flow rate of the thermal hydraulic system, and a first primary circuit flow rate and a first pump speed during a first cycle; adjusting the first pump speed based on a preset speed increment, and controlling the thermal-hydraulic system to operate at the adjusted first pump speed to obtain a second primary circuit flow rate of the thermal-hydraulic system during a second circulation process; Determining a first flow difference between the second primary circuit flow and the first primary circuit flow, and a second flow difference between the reference primary circuit flow and the second primary circuit flow; determining a first ratio between the preset speed increment and the first flow difference; determining a first product between the first ratio and the second flow difference; updating the first pump speed based on the first product, and continuing to perform the step of adjusting the first pump speed based on the preset speed increment and controlling the thermal-hydraulic system to operate at the adjusted first pump speed based on the updated first pump speed, so as to obtain a third primary circuit flow rate; If a second ratio between a third flow difference between the third primary circuit flow and the reference primary circuit flow and the reference primary circuit flow is greater than a first threshold, returning to the step of adjusting the first pump speed based on a preset speed increment until the second ratio is less than the first threshold; The first adjustment number of adjusting the first pump speed based on a preset speed increment is obtained.

3. The method according to claim 2, characterized in that The obtaining of the second adjustment number of continuously adjusting the pressure of the second circuit in the thermal hydraulic system until the average temperature of the first circuit of the thermal hydraulic system meets the preset temperature condition includes: Obtaining an average temperature of a reference primary circuit of the thermal hydraulic system; Determining an average temperature of a first primary circuit of the thermal hydraulic system according to an initial secondary circuit pressure value of the thermal hydraulic system; adjusting the initial secondary circuit pressure value based on a preset pressure increment, and controlling the thermal hydraulic system to operate at the adjusted initial secondary circuit pressure value to obtain a second primary circuit average temperature of the thermal hydraulic system; determining a first temperature difference between the first primary circuit average temperature and the second primary circuit average temperature, and a second temperature difference between the reference primary circuit average temperature and the second primary circuit average temperature; determining a third ratio between the first temperature difference and the predetermined pressure increment; determining a second product between the third ratio and the second temperature difference; updating the initial secondary circuit pressure value based on the second product, and continuing to perform the step of adjusting the initial secondary circuit pressure value based on the preset pressure increment and controlling the thermal-hydraulic system to operate at the adjusted initial secondary circuit pressure value based on the updated initial secondary circuit pressure value, so as to obtain a third primary circuit average temperature; If a fourth ratio between a third temperature difference between the third primary circuit average temperature and the reference primary circuit average temperature and the reference primary circuit average temperature is greater than a second threshold, returning to the step of adjusting the initial secondary circuit pressure value based on a preset pressure increment until the fourth ratio is less than the second threshold; The second adjustment number of adjusting the initial secondary circuit pressure value based on the preset pressure increment is obtained.

4. The method according to claim 3, characterized in that The step of obtaining the third adjustment number of continuously adjusting the secondary circuit water supply flow rate of the thermal hydraulic system until the secondary circuit water supply flow rate of the thermal hydraulic system meets the preset secondary circuit water supply flow rate condition includes: Obtaining a reference secondary circuit feed water flow rate of the thermal hydraulic system, and the first secondary circuit feed water flow rate and the first secondary circuit steam flow rate during the first cycle; Adjusting the first and second circuit feedwater flows based on a preset feedwater flow increment, and controlling the thermal-hydraulic system to operate at the adjusted first and second circuit feedwater flows, so as to obtain the second and second circuit steam flows of the thermal-hydraulic system during the second cycle; Determine a first water supply flow rate difference between the first secondary circuit water supply flow rate and the second secondary circuit water supply flow rate, and a second water supply flow rate difference between the reference secondary circuit water supply flow rate and the second secondary circuit water supply flow rate; determining a fifth ratio between the preset water supply flow rate increment and the first water supply flow rate difference; determining a third product between the fifth ratio and the second feedwater flow difference; The first and second circuit water supply flow rates are updated based on the third product, and based on the updated first and second circuit water supply flow rates, the steps of adjusting the first and second circuit water supply flow rates based on the preset water supply flow rate increment and controlling the thermal-hydraulic system to operate at the adjusted first and second circuit water supply flow rates are continued to be performed, so as to obtain a third second circuit water supply flow rate; If a third water supply flow difference between the third secondary circuit water supply flow and the reference secondary circuit water supply flow and a sixth ratio between the reference secondary circuit water supply flow are greater than a third threshold, returning to the step of adjusting the first secondary circuit water supply flow based on a preset water supply flow increment until the sixth ratio is less than the third threshold; Obtain the third adjustment number of times of adjusting the first-secondary circuit water supply flow rate based on the preset water supply flow rate increment.

5. The method according to claim 4, characterized in that The step of obtaining a fourth adjustment number of continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets the first preset water level condition comprises: Obtaining a first water level value, a first reference water level value, and a first boundary flow rate of the steam generator of the thermal hydraulic system during the second cycle; adjusting the first boundary flow rate based on a first preset boundary flow rate, and controlling the thermal hydraulic system to operate at the adjusted first boundary flow rate to obtain a second water level value of the steam generator; determining a first water level difference between the first water level value and the second water level value, and a second water level difference between the first reference water level value and the second water level value; determining a seventh ratio between the first preset boundary flow rate and the first water level difference; determining a fourth product between the seventh ratio and the second water level difference; updating the first boundary flow rate based on the fourth product, and continuing to perform the step of adjusting the first boundary flow rate based on the first preset boundary flow rate and controlling the thermal-hydraulic system to operate at the adjusted first boundary flow rate based on the updated first boundary flow rate, so as to obtain a third water level value of the steam generator; If an eighth ratio between a third water level difference between the third water level value and the first reference water level value and the first reference water level value is greater than a fourth threshold, returning to the step of adjusting the first boundary flow based on the first preset boundary flow until the eighth ratio is less than the fourth threshold; The fourth adjustment number of times the first boundary flow is adjusted based on the first preset boundary flow is obtained.

6. The method according to claim 5, characterized in that The step of obtaining a fifth adjustment number of continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets the second preset water level condition comprises: Obtaining a fourth water level value, a second reference water level value and a second boundary flow rate of the pressurizer during the second cycle of the thermal hydraulic system; adjusting the second boundary flow rate based on a second preset boundary flow rate, and controlling the thermal hydraulic system to operate at the adjusted second boundary flow rate to obtain a fifth water level value of the steam generator; determining a fourth water level difference between the fourth water level value and the fifth water level value, and a fifth water level difference between the second reference water level value and the fifth water level value; determining a ninth ratio between the second preset boundary flow rate and the third water level difference; determining a fifth product between the ninth ratio and the fifth water level difference; updating the second boundary flow rate based on the fifth product, and continuing to perform the step of adjusting the second boundary flow rate based on the second preset boundary flow rate and controlling the thermal-hydraulic system to operate at the adjusted second boundary flow rate based on the updated second boundary flow rate, so as to obtain a sixth water level value of the steam generator; If a tenth ratio between a sixth water level difference between the sixth water level value and the second reference water level value and the reference water level value is greater than a fifth threshold, returning to the step of adjusting the second boundary flow based on the second preset boundary flow until the tenth ratio is less than the fifth threshold; The fifth adjustment number of times the second boundary flow is adjusted based on the second preset boundary flow is obtained.

7. The method according to any one of claims 1 to 6, characterized in that: Determining the steady-state regulation result of the thermal-hydraulic system according to the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number includes: Obtaining a first number threshold, a second number threshold, a third number threshold, a fourth number threshold and the fifth number threshold; If the first adjustment number is greater than the first number threshold, or the second adjustment number is greater than the second number threshold, or the third adjustment number is greater than the third number threshold, or the fourth adjustment number is greater than the fourth number threshold, or the fifth adjustment number is greater than the fifth number threshold, it is determined that the steady-state condition result is that the thermal-hydraulic system has not completed steady-state regulation; If the first adjustment number is less than or equal to the first number threshold, and the second adjustment number is less than or equal to the second number threshold, and the third adjustment number is less than or equal to the third number threshold, and the fourth adjustment number is less than or equal to the fourth number threshold, and the fifth adjustment number is less than or equal to the fifth number threshold, then determining that the steady-state condition result is that the thermal-hydraulic system has completed steady-state regulation.

8. A steady-state regulating device for a thermal hydraulic system of a nuclear power plant, characterized in that: The device comprises: A first acquisition module is used to acquire a first adjustment number of continuously adjusting the pump speed in the thermal hydraulic system until a primary circuit flow rate of the thermal hydraulic system meets a preset primary circuit flow rate condition; A second acquisition module is used to acquire a second adjustment number of continuously adjusting the pressure of the secondary circuit in the thermal hydraulic system until the average temperature of the primary circuit of the thermal hydraulic system meets a preset temperature condition; A third acquisition module is used to acquire a third adjustment number of continuously adjusting the secondary circuit water supply flow of the thermal hydraulic system until the secondary circuit water supply flow of the thermal hydraulic system meets a preset secondary circuit water supply flow condition; a fourth acquisition module, configured to acquire a fourth adjustment number for continuously adjusting the boundary flow of the steam generator in the thermal hydraulic system until the water level of the steam generator meets the first preset water level condition; a fifth acquisition module, configured to acquire a fifth adjustment number for continuously adjusting the boundary flow of the pressurizer in the thermal hydraulic system until the water level of the pressurizer meets a second preset water level condition; A determination module is used to determine the steady-state regulation result of the thermal-hydraulic system according to the first adjustment number, and / or the second adjustment number, and / or the third adjustment number, and / or the fourth adjustment number, and / or the fifth adjustment number.

9. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: in, The computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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