Method, system and device for regulating circulating water of nuclear power plant and electronic equipment

Abstract

The invention provides a nuclear power plant circulating water adjusting method, system and device and electronic equipment, and relates to the technical field of nuclear power plant control, and the method comprises the steps: obtaining the saturated steam temperature of a condenser of a target nuclear power plant, and periodically collecting the seawater inlet temperature of a water inlet of the target nuclear power plant and the unit output; determining the back pressure of the condenser based on the saturated steam temperature; determining the target circulating water flow of the target timestamp based on the back pressure, the seawater inlet temperature and the unit output; and generating a frequency conversion instruction based on the target circulating water flow, and sending the frequency conversion instruction to the water pump motor. Therefore, by periodically collecting the seawater inlet temperature and the unit output of the water inlet of the target nuclear power plant, determining the backpressure and further determining the target circulating water flow, the backpressure of the condenser can be kept at the optimal level, and therefore the method can adapt to various nuclear energy comprehensive utilization scenes such as power grid peak regulation and nuclear energy heat supply; the power generation efficiency of the nuclear power plant is improved and the power generation cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of nuclear power plant control technology, and in particular to a nuclear power plant circulating water regulation method, system, device and electronic equipment. Background Art

[0002] A nuclear power plant is a facility that uses the energy released by nuclear fission or nuclear fusion reactions to generate electricity. In current technology, most of the nuclear power plants that have been put into operation or are under construction in China use a fixed-speed circulating pump solution without adjusting the circulating water flow. A nuclear power plant has implemented a solution that uses a frequency converter to adjust the circulating water flow, but this solution is to set a fixed gear by monitoring the change in water temperature for frequency converter adjustment, which is not economical and does not take into account the situation of drastic changes in unit output. Summary of the invention

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

[0004] To this end, an object of the present disclosure is to provide a circulating water regulation method for a nuclear power plant.

[0005] A second objective of the present disclosure is to provide a circulating water regulation system for a nuclear power plant.

[0006] The third objective of the present disclosure is to provide a circulating water regulating device for a nuclear power plant.

[0007] A fourth objective of the present disclosure is to provide an electronic device.

[0008] A fifth object of the present disclosure is to provide a non-transitory computer-readable storage medium.

[0009] A sixth object of the present disclosure is to provide a computer program product.

[0010] To achieve the above-mentioned purpose, the first aspect of the present disclosure proposes a method for regulating circulating water in a nuclear power plant, comprising: obtaining the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collecting the seawater inlet temperature and unit output at the water inlet of the target nuclear power plant; determining the back pressure of the condenser based on the saturated steam temperature; determining a target circulating water flow rate at a target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; generating a frequency conversion instruction based on the target circulating water flow rate, and sending the frequency conversion instruction to a water pump motor.

[0011] According to one embodiment of the present disclosure, obtaining the saturated steam temperature of the condenser of the target nuclear power plant includes: obtaining the temperature difference of the heat transfer end and the temperature difference of the circulating cooling water between the current timestamp and the previous timestamp; adding the temperature difference of the heat transfer end, the circulating cooling water temperature difference and the seawater inlet temperature to calculate and obtain the saturated steam temperature.

[0012] According to one embodiment of the present disclosure, the generating of the frequency conversion instruction based on the target circulating water flow rate includes: determining the corresponding target circulating water inlet flow rate based on the target circulating water flow rate, and obtaining the preset circulating water inlet flow rate of the target timestamp; generating the frequency conversion instruction based on the target circulating water inlet flow rate and the circulating water inlet flow rate.

[0013] According to one embodiment of the present disclosure, the frequency conversion instruction is generated based on the target circulating water inlet flow rate and the circulating water inlet flow rate, including: in response to the target circulating water inlet flow rate and the circulating water inlet flow rate being different, determining the target frequency of the water pump motor based on the flow rate difference; generating the frequency conversion instruction based on the target frequency.

[0014] To achieve the above-mentioned purpose, the second aspect of the present disclosure proposes a nuclear power plant circulating water regulation system, including: an acquisition module, used to determine the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collect the seawater inlet temperature and unit output at the water inlet of the target nuclear power plant; an analysis module, used to determine the back pressure of the condenser based on the saturated steam temperature, and determine the target circulating water flow rate at a target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; a control module, used to generate a frequency conversion instruction based on the target circulating water flow rate, and send the frequency conversion instruction to a water pump motor, and the water pump motor adjusts the operating frequency based on the frequency conversion instruction at the target timestamp.

[0015] According to one embodiment of the present disclosure, the system further includes: a display module, which is used to receive data from the acquisition module, the analysis module and the control module, and display the data through a display device.

[0016] To achieve the above-mentioned purpose, the third aspect embodiment of the present disclosure proposes a nuclear power plant circulating water regulating device, including: an acquisition module, used to obtain the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collect the seawater inlet temperature and unit output at the water inlet of the target nuclear power plant; a calculation module, used to determine the back pressure of the condenser based on the saturated steam temperature; a determination module, used to determine the target circulating water flow rate at the target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; a generation module, used to generate a frequency conversion instruction based on the target circulating water flow rate, and send the frequency conversion instruction to the water pump motor.

[0017] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present disclosure proposes an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the nuclear power plant circulating water regulation method as described in the first aspect embodiment of the present disclosure.

[0018] To achieve the above-mentioned purpose, the fifth aspect embodiment of the present disclosure proposes a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to implement the nuclear power plant circulating water regulation method as described in the first aspect embodiment of the present disclosure.

[0019] To achieve the above-mentioned purpose, the sixth aspect of the present disclosure proposes a computer program product, including a computer program, which, when executed by a processor, is used to implement the nuclear power plant circulating water regulation method as described in the first aspect of the present disclosure.

[0020] Therefore, by periodically collecting the seawater inlet temperature and unit output at the target nuclear power plant's water inlet, determining the back pressure, and further determining the target circulating water flow rate, the condenser back pressure can be maintained at an optimal level, thereby adapting to various nuclear energy comprehensive utilization scenarios such as grid peak regulation and nuclear energy heating, thereby improving the power generation efficiency of the nuclear power plant and reducing the cost of power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a circulating water regulation method for a nuclear power plant according to an embodiment of the present disclosure;

[0022] Figure 2 is a schematic diagram of another nuclear power plant circulating water regulation method according to an embodiment of the present disclosure;

[0023] Figure 3 is a schematic diagram of another nuclear power plant circulating water regulation method according to an embodiment of the present disclosure;

[0024] Figure 4 is a schematic diagram of a circulating water regulation system for a nuclear power plant according to one embodiment of the present disclosure;

[0025] Figure 5 is a schematic diagram of a circulating water regulating device for a nuclear power plant according to one embodiment of the present disclosure;

[0026] Figure 6 is a schematic diagram of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure are described in detail below, 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 to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0028] The acquisition, storage, use, and processing of data in the technical solution disclosed in this disclosure are in compliance with the relevant provisions of relevant laws and regulations.

[0029] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be considered as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0030] Figure 1 is a schematic diagram of a nuclear power plant circulating water regulation method according to an embodiment of the present disclosure, such as Figure 1 As shown, the circulating water regulation method of the nuclear power plant includes the following steps:

[0031] S101, obtaining the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collecting the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant.

[0032] The nuclear power plant circulating water regulation method of the embodiment of the present application can be applied to the daily operating conditions of nuclear power units and the scenarios in which nuclear power plants participate in power grid peak regulation and comprehensive utilization of nuclear energy. The executor of the nuclear power plant circulating water regulation of the embodiment of the present application can be the nuclear power plant circulating water regulation device of the embodiment of the present application, and the nuclear power plant circulating water regulation device can be set on an electronic device.

[0033] In the embodiment of the present disclosure, the collection period is designed in advance and can be changed according to actual design needs, and no limitation is made here. For example, the collection period can be 10 minutes, 5 minutes, etc.

[0034] The unit output refers to the electrical output power generated by the generator units in the target nuclear power plant. In the embodiments of the present disclosure.

[0035] The seawater inlet temperature at the water inlet of the target nuclear power plant can be collected by sensors, and the electrical output power can be actually measured by power testing equipment.

[0036] Optionally, the current power output may also be obtained by calculation based on the technical specifications and design parameters of the power generation equipment.

[0037] Optionally, the unit output may also be determined by reading Distributed Control System (DCS) data.

[0038] S102, determining the back pressure of the condenser based on the saturated steam temperature.

[0039] It should be noted that back pressure refers to the pressure at the exhaust port of the steam turbine in the target nuclear power plant. Higher back pressure means lower efficiency of the steam turbine because more energy is wasted in the exhaust.

[0040] In the embodiment of the present disclosure, after the saturated steam temperature is obtained, there may be multiple methods for determining the back pressure of the condenser based on the saturated steam temperature, which are not limited here.

[0041] In one possible implementation, the saturated steam temperature may be calculated using a back pressure calculation formula to obtain the back pressure of the condenser.

[0042] In another possible implementation manner, the saturated steam temperature may be input into a back pressure determination model for processing to generate the back pressure of the condenser.

[0043] S103, determining a target circulating water flow rate at a target timestamp based on back pressure, seawater inlet temperature, and unit output.

[0044] In a possible implementation, the circulating cooling water temperature rise ΔT is related to the enthalpy difference Δh between exhaust steam and condensed water and the circulating cooling ratio m, ΔT = Δh / (4.1868m), and the heat transfer end difference δt = ΔT / 〔exp(KA / 1163W)-1〕. It can be seen from the above formula that the back pressure of the condenser is related to the seawater inlet temperature (Tw1) and the circulating water volume W. At the same time, the condenser back pressure is also related to the unit output P.

[0045] The above parameters jointly determine the cold end parameters of the steam turbine, so W(t)=F'(t, P, Tw1, Pk), that is, the circulating water flow at time t is predicted.

[0046] Where W(t) is the circulating water flow rate, t is the tth target timestamp, Tw1 is the seawater inlet temperature, Pk is the back pressure, and P is the unit output.

[0047] It should be noted that the function F' in the embodiment of the present disclosure is a pre-designed function, which may be a linear function or a non-linear function, and is not limited here.

[0048] Therefore, the above formula can help engineers optimize the design and operation of condensers to improve power generation efficiency and save resources.

[0049] S104, generating a frequency conversion instruction based on the target circulating water flow rate, and sending the frequency conversion instruction to the water pump motor.

[0050] In the disclosed embodiment, the saturated steam temperature of the condenser of the target nuclear power plant is first obtained, and the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant are periodically collected, and then the back pressure of the condenser is determined based on the saturated steam temperature, and then the target circulating water flow rate of the target timestamp is determined based on the back pressure, the seawater inlet temperature, and the unit output, and finally the frequency conversion instruction is generated based on the target circulating water flow rate, and the frequency conversion instruction is sent to the water pump motor. Thus, by periodically collecting the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant, the back pressure is determined, and the target circulating water flow rate is further determined, so that the condenser back pressure can be maintained at an optimal level, so as to adapt to various nuclear energy comprehensive utilization scenarios such as power grid peak regulation and nuclear energy heating, thereby improving the power generation efficiency of the nuclear power plant and reducing the power generation cost.

[0051] In one possible implementation, back pressure can be calculated as follows:

[0052]

[0053] Among them, P K is the back pressure, T c is the saturated steam temperature, and the others are constant coefficients. It should be noted that the constant coefficients in this formula are obtained from experiments.

[0054] It can be seen from the above formula that according to the cold end optimization results of the unit, after the condenser type is determined, the condenser back pressure Pk is related to the seawater inlet temperature Tw1 and the circulating water volume W. At the same time, the condenser back pressure Pk is related to the unit output P. According to the turbine characteristic curve, the relationship between the two can be fitted as Pk = f(P). Further deduction:

[0055]

[0056] According to the seawater inlet temperature T at time t W1 and the unit output P, ​​the required (optimal) circulating water flow rate W at this time can be calculated by the above formula, which can be simply expressed as W(t)=F'(t, P, Tw1), that is, the circulating water flow rate at time t is predicted.

[0057] In the above embodiment, the saturated steam temperature of the condenser of the target nuclear power plant can be obtained by Figure 2 Explaining further, the method includes:

[0058] S201, obtaining the temperature difference of the heat transfer end and the temperature difference of the circulating cooling water between the current timestamp and the previous timestamp.

[0059] S202, adding the temperature difference at the heat transfer end, the temperature difference of the circulating cooling water and the seawater inlet temperature to calculate and obtain the saturated steam temperature.

[0060] The saturated steam temperature Tc is calculated as follows: Tc = Tw1 + δt + ΔT. The circulating cooling water temperature rise ΔT is related to the enthalpy difference Δh between the exhaust steam and the condensed water and the circulating cooling ratio m, ΔT = Δh / (4.1868m), and the heat transfer end difference δT = ΔT / 〔exp(KA / 1163W)-1〕.

[0061] In the above embodiment, the frequency conversion instruction is generated based on the target circulating water flow rate, and the frequency conversion instruction can also be generated by Figure 3 Explaining further, the method includes:

[0062] S301, determining a corresponding target circulating water inlet flow rate based on a target circulating water flow rate, and obtaining a preset circulating water inlet flow rate of a target timestamp.

[0063] It should be noted that the target circulating water inlet flow rate is the water flow rate of the circulating water when the target circulating water flow rate is reached.

[0064] In the embodiment of the present disclosure, since the specifications of condensers of different nuclear power plants are different, under the condition of the same target circulating water flow rate, the corresponding target circulating water inlet flow rates may be different.

[0065] In one possible implementation, a target circulating water inlet flow rate generation model can be trained and generated based on the historical operating data of the condenser of the target nuclear power plant, so that the target circulating water flow rate can be input into the target circulating water inlet flow rate generation model to generate the target circulating water inlet flow rate. The target circulating water inlet flow rate generation model can be stored in the storage space of the electronic device to facilitate retrieval and use when needed.

[0066] S302, generating a frequency conversion instruction based on the target circulating water inlet flow rate and the circulating water inlet flow rate.

[0067] In the disclosed embodiment, in response to the target circulating water inlet flow rate being different from the circulating water inlet flow rate, a target frequency of the water pump motor is determined based on the flow rate difference, and a frequency conversion instruction is generated based on the target frequency.

[0068] In response to the target circulating water inlet flow rate being the same as the circulating water inlet flow rate, a maintenance instruction is generated or no frequency conversion instruction is generated.

[0069] Figure 4 is a schematic diagram of a circulating water regulation system for a nuclear power plant according to an embodiment of the present disclosure. Figure 4 As shown, the nuclear power plant circulating water regulation system 400 includes: a collection module 410 , an analysis module 420 and a control module 430 .

[0070] The acquisition module 410 is used to determine the saturated steam temperature of the condenser of the target nuclear power plant, and periodically acquire the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant.

[0071] The analysis module 420 is used to determine the back pressure of the condenser based on the saturated steam temperature, and determine the target circulating water flow rate at the target timestamp based on the back pressure, the seawater inlet temperature, and the unit output.

[0072] The control module 430 is used to generate a frequency conversion instruction based on the target circulating water flow rate, and send the frequency conversion instruction to the water pump motor. The water pump motor adjusts the operating frequency based on the frequency conversion instruction at the target timestamp.

[0073] In another possible situation, the nuclear power plant circulating water regulation system 400 further includes: a display module 440 for receiving data from the acquisition module, the analysis module and the control module, and displaying the data through a display device.

[0074] It should be noted that the display device may include various types and is not limited in any way. For example, the display device may include a display, a projector, and the like.

[0075] In the embodiment of the present disclosure, the data of the acquisition module, the analysis module and the control module may be processed before being displayed by the display device. In one possible implementation, the data of the acquisition module, the analysis module and the control module may be preprocessed, such as normalizing the data, processing missing values, removing abnormal data, etc.

[0076] In another possible implementation, the data of the acquisition module, the analysis module, and the control module may be processed into data in a specific form. For example, the data may be processed into a pie chart, a bar chart, or the like for display.

[0077] Corresponding to the nuclear power plant circulating water regulation methods provided in the above-mentioned embodiments, an embodiment of the present disclosure also provides a nuclear power plant circulating water regulation device. Since the nuclear power plant circulating water regulation device provided in the embodiment of the present disclosure corresponds to the nuclear power plant circulating water regulation methods provided in the above-mentioned embodiments, the implementation methods of the above-mentioned nuclear power plant circulating water regulation methods are also applicable to the nuclear power plant circulating water regulation device provided in the embodiment of the present disclosure, and will not be described in detail in the following embodiments.

[0078] Figure 5 is a schematic diagram of a circulating water regulating device for a nuclear power plant according to an embodiment of the present disclosure, such as Figure 5 As shown, the nuclear power plant circulating water regulating device 500 includes: an acquisition module 510, a calculation module 520, a determination module 530 and a generation module 540.

[0079] The acquisition module 510 is used to acquire the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collect the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant.

[0080] The calculation module 520 is used to determine the back pressure of the condenser based on the saturated steam temperature.

[0081] The determination module 530 is used to determine the target circulating water flow rate at the target timestamp based on the back pressure, the seawater inlet temperature, and the unit output.

[0082] The generating module 540 is used to generate a frequency conversion instruction based on the target circulating water flow rate and send the frequency conversion instruction to the water pump motor.

[0083] In one possible implementation, the acquisition module 510 is also used to: obtain the temperature difference at the heat transfer end and the circulating cooling water temperature difference between the current timestamp and the previous timestamp; add the temperature difference at the heat transfer end, the circulating cooling water temperature difference and the seawater inlet temperature to calculate the saturated steam temperature.

[0084] In one possible implementation, the generation module 540 is also used to: determine the corresponding target circulating water inlet flow rate based on the target circulating water flow rate, and obtain the preset circulating water inlet flow rate of the target timestamp; generate a frequency conversion instruction based on the target circulating water inlet flow rate and the circulating water inlet flow rate.

[0085] In one possible implementation, the generation module 540 is further used to: in response to the target circulating water inlet flow rate being different from the circulating water inlet flow rate, determine the target frequency of the water pump motor based on the flow rate difference; and generate a frequency conversion instruction based on the target frequency.

[0086] Therefore, by periodically collecting the seawater inlet temperature and unit output at the target nuclear power plant's water inlet, determining the back pressure, and further determining the target circulating water flow rate, the condenser back pressure can be maintained at an optimal level, thereby adapting to various nuclear energy comprehensive utilization scenarios such as grid peak regulation and nuclear energy heating, thereby improving the power generation efficiency of the nuclear power plant and reducing the cost of power generation.

[0087] In order to implement the above embodiment, the present disclosure further provides an electronic device 600, Figure 6 is a schematic diagram of an electronic device according to an embodiment of the present disclosure, such as Figure 6 As shown, the electronic device 600 includes: a processor 601 and a memory 602 that is communicatively connected to the processor, the memory 602 stores instructions that can be executed by at least one processor, and the instructions are executed by at least one processor 601 to implement the present disclosure. Figure 1-Figure 3 A circulating water regulation method for a nuclear power plant according to an embodiment.

[0088] In order to implement the above embodiments, the present disclosure also provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable the computer to implement the above embodiments. Figure 1-Figure 3 A circulating water regulation method for a nuclear power plant according to an embodiment.

[0089] In order to implement the above embodiments, the present disclosure also provides a computer program product, including a computer program. When the computer program is executed by a processor, the computer program implements the above embodiments. Figure 1-Figure 3 A circulating water regulation method for a nuclear power plant according to an embodiment.

[0090] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0091] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0092] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0093] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0094] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in 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 technicians in the technical field to which the embodiments of the present application belong.

[0095] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that contains, stores, communicates, propagates or transmits a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0096] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0097] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0098] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0099] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for regulating circulating water in a nuclear power plant, characterized in that: include: Acquiring the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collecting the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant; determining a back pressure of the condenser based on the saturated steam temperature; Determine a target circulating water flow rate at a target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; A frequency conversion instruction is generated based on the target circulating water flow rate, and the frequency conversion instruction is sent to the water pump motor.

2. The method according to claim 1, characterized in that The step of obtaining the saturated steam temperature of the condenser of the target nuclear power plant comprises: Get the temperature difference at the heat transfer end and the temperature difference of the circulating cooling water between the current timestamp and the previous timestamp; The heat transfer end temperature difference, the circulating cooling water temperature difference and the seawater inlet temperature are added together to calculate and obtain the saturated steam temperature.

3. The method according to claim 1, characterized in that The generating of the frequency conversion instruction based on the target circulating water flow rate comprises: Determine a corresponding target circulating water inlet flow rate based on the target circulating water flow rate, and obtain a preset circulating water inlet flow rate of the target timestamp; The frequency conversion instruction is generated based on the target circulating water inlet flow rate and the circulating water inlet flow rate.

4. The method according to claim 3, characterized in that The generating the frequency conversion instruction based on the target circulating water inlet flow rate and the circulating water inlet flow rate comprises: In response to the target circulating water inlet flow rate being different from the circulating water inlet flow rate, determining a target frequency of the water pump motor based on the flow rate difference; The frequency conversion instruction is generated based on the target frequency.

5. A circulating water regulation system for a nuclear power plant, characterized in that: include: A collection module, used to determine the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collect the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant; an analysis module, configured to determine the back pressure of the condenser based on the saturated steam temperature, and determine a target circulating water flow rate at a target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; The control module is used to generate a frequency conversion instruction based on the target circulating water flow rate and send the frequency conversion instruction to the water pump motor, and the water pump motor adjusts the operating frequency based on the frequency conversion instruction at the target timestamp.

6. The system according to claim 5, characterized in that The system further comprises: The display module is used to receive data from the acquisition module, the analysis module and the control module, and display the data through a display device.

7. A circulating water regulating device for a nuclear power plant, characterized in that: include: An acquisition module, used to acquire the saturated steam temperature of the condenser of the target nuclear power plant, and periodically collect the seawater inlet temperature and unit output of the water inlet of the target nuclear power plant; a calculation module, configured to determine a back pressure of the condenser based on the saturated steam temperature; A determination module, configured to determine a target circulating water flow rate at a target timestamp based on the back pressure, the seawater inlet temperature, and the unit output; A generating module is used to generate a frequency conversion instruction based on the target circulating water flow rate and send the frequency conversion instruction to the water pump motor.

8. An electronic device, characterized in that: Including memory and processor; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the method according to any one of claims 1 to 4.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 4 when executed by a processor.

Images