Automatic boosting control method for bypass system of steam turbine under starting condition of sodium-cooled fast reactor

Abstract

The invention particularly relates to an automatic boosting control method for a steam turbine bypass system under a sodium-cooled fast reactor starting working condition. The automatic boosting control method comprises the following steps that a steam turbine sequential control main steam header pressure input signal is generated; generating a main steam header pressure set value according to a steam turbine sequential control main steam header pressure input signal; according to the difference value between the main steam header pressure measurement value and the main steam header pressure set value, a bypass valve position control signal is generated to adjust the bypass valve position, and the main steam header pressure is kept at the set value. The invention further relates to an automatic boosting control device for the steam turbine bypass system under the sodium-cooled fast reactor starting working condition, computer equipment and storage equipment. According to the method, under the sodium-cooled fast reactor starting working condition, after the reactor power rises to a 28% full power platform and the steam turbine is grid-connected and loaded, automatic control that the steam turbine bypass system controls the main steam header to boost and the steam turbine bypass system controls the pressure of the main steam header to sequentially control the pressure of the main steam header is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic pressure boost control of a steam turbine bypass system under a sodium-cooled fast reactor startup condition, and in particular to a method, device, computer equipment and storage device for automatic pressure boost control of a steam turbine bypass system under a sodium-cooled fast reactor startup condition. Background Art

[0002] The steam turbine bypass system of the sodium-cooled fast reactor is different from that of the pressurized water reactor. It adopts the "machine-follow-the-reactor" operation mode and has a 100% bypass discharge capacity. Under the startup condition of the sodium-cooled fast reactor, when the reactor thermal power is (11.9-28)% Pn, the superheater is put into operation, the startup and shutdown cooling system is shut down, and the main steam at the outlet of the superheater is transported to the main steam header of the conventional island. In addition to a part of the main steam entering the steam turbine through the main steam valve for warm-up, a part of the main steam is supplied to the high-pressure auxiliary steam header after pressure reduction and temperature reduction, and then to the deaerator and other users. The remaining main steam is discharged to the condenser through the bypass valve to maintain the superheater outlet pressure at 7MPa until the reactor thermal power reaches 28% Pn, the main steam pressure at the superheater outlet is increased to 14MPa, and the steam turbine generator set begins to be connected to the grid and carry load; when the power of the steam turbine generator set matches the reactor thermal power, the steam turbine bypass system exits operation. Summary of the invention

[0003] The purpose of the present invention is to provide a method, device, calculation and equipment and storage device for automatic pressure boost control of a sodium-cooled fast reactor steam turbine bypass system, so as to realize automatic control of the main steam header pressure by the steam turbine bypass system and the main steam header pressure by the steam turbine bypass system after the reactor power rises to 28% of the full power platform and the steam turbine is connected to the grid with load under the sodium-cooled fast reactor startup condition.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A method for automatically increasing the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition comprises the following steps:

[0006] Generate a pressure input signal for the main steam header of the steam turbine sequence control;

[0007] According to the main steam header pressure input signal of the steam turbine sequential control, the main steam header pressure setting value is generated and output;

[0008] The bypass valve total valve position setting value is calculated based on the difference between the main steam manifold pressure measurement value and the output main steam manifold pressure setting value; the bypass valve position setting value is calculated based on the bypass valve total valve position setting value, and the bypass valve position control signal is generated to adjust the bypass valve position to maintain the main steam manifold pressure at the set value.

[0009] As one of the achievable methods, the operator inputs a steam turbine sequential control main steam header pressure input command, and then a steam turbine sequential control main steam header pressure input signal is generated.

[0010] As one of the achievable methods, if any of the following six conditions is met, the turbine sequential control main steam header pressure input signal is reset:

[0011] (1) The operator inputs the reset command for the main steam header pressure of the steam turbine sequence control;

[0012] (2) There is a signal for the bypass valve to be put into manual control mode;

[0013] (3) There is a turbine trip signal;

[0014] (4) The emergency shutdown signal of the sodium-cooled fast reactor is within 1 second;

[0015] (5) When there is a signal for the turbine sequential control main steam header pressure to be put into operation, and the main steam header pressure measurement value is lower than 12.7 MPa for more than 2 seconds, and the turbine is not put into pressure control mode, the bypass valve total valve position setting value is less than 2.5%, and the bypass valve total valve position is less than 2.5%;

[0016] (6) There is a turbine bypass system that controls the main steam header pressure to convert the turbine into a sequential control main steam header pressure completion signal.

[0017] As one of the feasible methods, if the following two conditions are met at the same time and last for 15 seconds, a completion signal for the turbine bypass system to control the main steam header pressure to the turbine sequential control main steam header pressure is generated for 60 seconds:

[0018] (1) There is a pressure input signal for the main steam header of the steam turbine sequence control;

[0019] (2) The main steam manifold pressure setting value is (13.60~13.75)MPa.

[0020] As one of the feasible methods, if the following two conditions are met simultaneously and last for 5 seconds, a signal for the turbine to start pressure control mode is generated:

[0021] (1) There is a pressure input signal for the main steam header of the steam turbine sequence control;

[0022] (2) The pressure measurement value of the main steam manifold is (12.70~13.40)MPa.

[0023] As one of the achievable methods, generating and outputting the main steam header pressure setting value includes the following steps:

[0024] Set the target value of main steam header pressure;

[0025] Set the rising rate from the main steam header pressure set value to the main steam header pressure target value;

[0026] The main steam header pressure setting value is generated according to the rising rate from the main steam header pressure setting value to the main steam header pressure target value.

[0027] As one of the achievable methods, setting the target value of the main steam header pressure includes the following steps:

[0028] When the turbine sequential control main steam header pressure input signal exists for 0.5s, the main steam header pressure target value is automatically set to 13.7MPa;

[0029] Otherwise, the target value of the main steam manifold pressure is set through the pressure setting value station; the pressure setting value station is used for the operator to manually set the target value of the main steam manifold pressure or the system to set the target value of the main steam connection pressure.

[0030] As one of the achievable methods, the rising rate of the main steam header pressure set value to the main steam header pressure target value is set in the following manner:

[0031] When there is a turbine sequential control main steam header pressure input signal and a turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.009MPa / s;

[0032] When there is a turbine sequential control main steam header pressure input signal and there is no turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.0015MPa / s;

[0033] When it does not belong to the above two situations, the rising rate from the main steam header pressure setting value to the main steam header pressure target value is set to infinity.

[0034] As one of the achievable ways, when there is a fault signal of all the pressure transmitters of the main steam header, the lock generates a bypass valve position control signal according to the calculated bypass valve position setting value, and generates a bypass valve position control signal using the bypass valve position setting value input by the operator;

[0035] When there is a signal that all the pressure transmitters of the main steam header have failed, the bypass valve position control signal generated according to the calculated bypass valve position setting value is unlocked, and the bypass valve position control signal is generated again using the calculated bypass valve position setting value.

[0036] As one of the feasible ways, a plurality of bypass valves connected in parallel are provided in the turbine bypass system, and the plurality of bypass valves are put into regulation at the same time;

[0037] According to the total valve position setting value of the bypass valve, the valve position setting value of the bypass valve is calculated based on the equation function f(x);

[0038] f(x)=[min(nx-(n-1)×100,100); max(nx-(n-1)×100,0)];

[0039] Wherein, f(x) is the bypass valve position setting value, the minimum bypass valve position setting value is the smaller value between nx-(n-1)×100 and 100, the maximum bypass valve position setting value is the larger value between nx-(n-1)×100 and 0, x is the total bypass valve position setting value, and n is the number of bypass valves.

[0040] In order to achieve the above object, the present invention also provides an automatic boost control device for a steam turbine bypass system under a sodium-cooled fast reactor startup condition, comprising:

[0041] A start-up signal generation module is used to generate a start-up signal for the steam turbine sequential control main steam header pressure;

[0042] A reset signal generation module, used to reset the steam turbine sequential control main steam header pressure input signal;

[0043] A pressure setting value generating module is used to generate a main steam header pressure setting value according to a steam turbine sequential control main steam header pressure input signal;

[0044] A completion signal generation module is used to generate a completion signal for converting the main steam header pressure of the steam turbine bypass system to the main steam header pressure of the steam turbine sequential control system;

[0045] A control mode signal generating module, used for generating a steam turbine input pressure control mode signal;

[0046] The valve position control signal generating module is used to calculate the bypass valve total valve position setting value according to the difference between the main steam header pressure measurement value and the main steam header pressure setting value; calculate the bypass valve position setting value according to the bypass valve total valve position setting value, and generate the bypass valve position control signal to adjust the bypass valve position to maintain the main steam header pressure at the set value;

[0047] The locking module is used to lock or unlock the valve position control signal generating module to generate the bypass valve position control signal according to the calculated bypass valve position setting value; the bypass valve position control signal is generated by using the bypass valve position setting value manually input by the operator;

[0048] The data are connected among the input signal generating module, the reset signal generating module, the pressure setting value generating module, the completion signal generating module, the control mode signal generating module, the valve position control signal generating module and the locking module.

[0049] In order to achieve the above-mentioned purpose, the present invention also provides a computer device, including a memory and a processor, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the steps of the automatic pressure boost control method of the turbine bypass system under the startup condition of the sodium-cooled fast reactor are implemented.

[0050] In order to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which computer-readable instructions are stored. When the computer-readable instructions are executed, the steps of the automatic pressure boost control method of the turbine bypass system under the sodium-cooled fast reactor startup condition are implemented.

[0051] Beneficial technical effects of the present invention:

[0052] The invention discloses a method, device, computer equipment and storage device for automatically controlling a steam turbine bypass system under a sodium-cooled fast reactor startup condition. Under a sodium-cooled fast reactor startup condition, after the reactor power rises to a 28% full power platform and the steam turbine is grid-connected with load, a main steam header pressure setting value is generated according to a steam turbine sequential control main steam header pressure input signal, and a rising rate of the main steam header pressure setting value is set, so that the main steam header pressure setting value is automatically and gradually approached to a main steam header target value; when the main steam header pressure setting value reaches the main steam header pressure target value, the steam turbine bypass system controls the main steam header pressure boosting operation and the steam turbine bypass system controls the main steam header pressure to convert the steam turbine sequential control main steam header pressure operation, so that disturbance-free switching is achieved, and the operator's manual operation is avoided to cause the inevitable uncertainty disturbance introduced into the three circuits of the sodium-cooled fast reactor, thereby reducing the operator's burden in the process of steam turbine grid-connected pressure boosting. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a flow chart of an embodiment of a method for automatically boosting the pressure of a steam turbine bypass system under the sodium-cooled fast reactor startup condition of the present invention;

[0054] Figure 2 It is a schematic structural view of an embodiment of the automatic pressure-increasing control device of the steam turbine bypass system under the sodium-cooled fast reactor startup condition of the present invention;

[0055] Figure 3 The figure is a schematic structural view of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0057] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0059] The control mode of the steam turbine bypass system of the sodium-cooled fast reactor is the pressure control mode; in the pressure control mode, the steam turbine bypass system calculates the bypass valve opening setting value according to the difference between the main steam header pressure measurement value and the main steam header pressure setting value, generates a bypass valve opening control signal to control the bypass valve opening, and maintains the main steam header pressure at the set value.

[0060] refer to Figure 1 , a flow chart of an embodiment of a method for automatically boosting the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition is shown, wherein the method for automatically boosting the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition comprises the following steps:

[0061] Generate a pressure input signal for the main steam header of the steam turbine sequence control;

[0062] According to the main steam header pressure input signal of the steam turbine sequential control, the main steam header pressure setting value is generated and output;

[0063] The bypass valve total valve position setting value is calculated based on the difference between the main steam manifold pressure measurement value and the output main steam manifold pressure setting value; the bypass valve position setting value is calculated based on the bypass valve total valve position setting value, and the bypass valve position control signal is generated to adjust the bypass valve position to maintain the main steam manifold pressure at the set value.

[0064] In this embodiment, as one of the achievable methods, the operator inputs a steam turbine sequential control main steam header pressure input command, and a steam turbine sequential control main steam header pressure input signal is generated.

[0065] In this embodiment, as one of the achievable methods, if any one of the following six conditions is met, the steam turbine sequential control main steam header pressure input signal is reset:

[0066] (1) The operator inputs the reset command for the main steam header pressure of the steam turbine sequence control;

[0067] (2) There is a manual control mode signal for the bypass valve;

[0068] (3) There is a turbine trip signal;

[0069] (4) The emergency shutdown signal of the sodium-cooled fast reactor is within 1 second;

[0070] (5) When there is a signal for the turbine sequential control main steam header pressure to be put into operation, and the main steam header pressure measurement value is lower than 12.7 MPa for more than 2 seconds, and the turbine is not put into pressure control mode, the bypass valve total valve position setting value is less than 2.5%, and the bypass valve total valve position is less than 2.5%;

[0071] (6) There is a signal to complete the main steam header pressure control by the turbine bypass system to convert the main steam header pressure into a turbine sequential control system.

[0072] In this embodiment, as one of the achievable methods, if the following two conditions are met at the same time and last for 15 seconds, a completion signal for the turbine bypass system to control the main steam header pressure to convert the turbine sequential control main steam header pressure is generated for 60 seconds:

[0073] (1) There is a pressure input signal for the main steam header of the steam turbine sequence control;

[0074] (2) The main steam manifold pressure setting value is (13.60~13.75)MPa.

[0075] In this embodiment, as one of the achievable methods, if the following two conditions are met at the same time and last for 5 seconds, a steam turbine pressure control mode signal is generated:

[0076] (1) There is a pressure input signal for the main steam header of the steam turbine sequence control;

[0077] (2) The pressure measurement value of the main steam manifold is (12.70~13.40)MPa.

[0078] In this embodiment, as one of the achievable methods, generating and outputting the main steam header pressure setting value includes the following steps:

[0079] Set the target value of main steam header pressure;

[0080] Set the rising rate from the main steam header pressure set value to the main steam header pressure target value;

[0081] The main steam header pressure setting value is generated according to the rising rate from the main steam header pressure setting value to the main steam header pressure target value.

[0082] In this embodiment, as one of the achievable methods, setting the target value of the main steam header pressure includes the following steps:

[0083] When the turbine sequential control main steam header pressure input signal exists for 0.5s, the main steam header pressure target value is automatically set to 13.7MPa;

[0084] Otherwise, the target value of the main steam manifold pressure is set through the pressure setting value station; the pressure setting value station is used for the operator to manually set the target value of the main steam manifold pressure or the system to set the target value of the main steam connection pressure.

[0085] In this embodiment, as one of the achievable methods, the rising rate from the main steam header pressure setting value to the main steam header pressure target value is set by the following method:

[0086] When there is a turbine sequential control main steam header pressure input signal and a turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.009MPa / s;

[0087] When there is a turbine sequential control main steam header pressure input signal and there is no turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.0015MPa / s;

[0088] When it does not belong to the above two situations, the rising rate from the main steam header pressure setting value to the main steam header pressure target value is set to infinity.

[0089] In this embodiment, as one of the achievable ways, when there is a fault signal of all the pressure transmitters of the main steam header, the lock generates a bypass valve position control signal according to the calculated bypass valve position setting value, and generates a bypass valve position control signal using the bypass valve position setting value input by the operator;

[0090] When there is a signal that all the pressure transmitters of the main steam header have failed, the bypass valve position control signal generated according to the calculated bypass valve position setting value is unlocked, and the bypass valve position control signal is generated again using the calculated bypass valve position setting value.

[0091] In this embodiment, as one of the achievable methods, a plurality of bypass valves connected in parallel are provided in the turbine bypass system, and the plurality of bypass valves are put into regulation at the same time;

[0092] According to the total valve position setting value of the bypass valve, the valve position setting value of the bypass valve is calculated based on the equation function f(x);

[0093] f(x)=[min(nx-(n-1)×100,100); max(nx-(n-1)×100,0)];

[0094] Wherein, f(x) is the bypass valve position setting value, the minimum bypass valve position setting value is the smaller value between nx-(n-1)×100 and 100, the maximum bypass valve position setting value is the larger value between nx-(n-1)×100 and 0, x is the total bypass valve position setting value, and n is the number of bypass valves.

[0095] refer to Figure 2 As an implementation of the above method, the present invention provides an embodiment of a device for automatically boosting the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition. The device embodiment corresponds to the embodiment of the method for automatically boosting the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition. The device can be specifically applied to various electronic devices.

[0096] The automatic boost control device for the steam turbine bypass system under the sodium-cooled fast reactor startup condition described in this embodiment includes:

[0097] A start-up signal generation module is used to generate a start-up signal for the steam turbine sequential control main steam header pressure;

[0098] A reset signal generation module, used to reset the steam turbine sequential control main steam header pressure input signal;

[0099] A pressure setting value generating module is used to generate a main steam header pressure setting value according to a steam turbine sequential control main steam header pressure input signal;

[0100] A completion signal generation module is used to generate a completion signal for converting the main steam header pressure of the steam turbine bypass system to the main steam header pressure of the steam turbine sequential control system;

[0101] A control mode signal generating module, used for generating a steam turbine input pressure control mode signal;

[0102] The valve position control signal generating module is used to calculate the bypass valve total valve position setting value according to the difference between the main steam header pressure measurement value and the main steam header pressure setting value; calculate the bypass valve position setting value according to the bypass valve total valve position setting value, and generate the bypass valve position control signal to adjust the bypass valve position to maintain the main steam header pressure at the set value;

[0103] The locking module is used to lock or unlock the valve position control signal generating module to generate the bypass valve position control signal according to the calculated bypass valve position setting value; the bypass valve position control signal is generated by using the bypass valve position setting value manually input by the operator;

[0104] Data connections are made among the input signal generation module, the reset signal generation module, the pressure setting value generation module, the completion signal generation module, the control mode signal generation module, the increase limit module, the valve position control signal generation module and the locking module.

[0105] As an implementation of the above method, the present invention provides an embodiment of a computer device, which corresponds to the embodiment of the automatic pressure boost control method of the turbine bypass system under the sodium-cooled fast reactor startup condition.

[0106] See also Figure 3 The computer device described in this embodiment includes a memory, a processor and a network interface that are interconnected and communicated through a system bus. It should be noted that the figure only shows a computer device with a memory, a processor and a network interface, but it should be understood that it is not required to implement all the components shown, and more or fewer components can be implemented instead. Among them, those skilled in the art can understand that the computer device here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application-specific integrated circuits, programmable gate arrays, digital processors, embedded devices, etc.

[0107] The computer device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The computer device may interact with a user through a keyboard, a mouse, a remote controller, a touch pad, or a voice control device.

[0108] The memory includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory, random access memory, static random access memory, read-only memory, electrically erasable programmable read-only memory, programmable read-only memory, magnetic memory, disk, optical disk, etc. In some embodiments, the memory may be an internal storage unit of the computer device, such as a hard disk or memory of the computer device. In other embodiments, the memory may also be an external storage device of the computer device, such as a plug-in hard disk, smart memory card, secure digital card, flash memory card, etc. equipped on the computer device. Of course, the memory may also include both the internal storage unit of the computer device and its external storage device. In this embodiment, the memory is generally used to store the operating system and various application software installed on the computer device, such as the computer-readable instructions of the automatic boost control method of the turbine bypass system under the sodium-cooled fast reactor startup condition. In addition, the memory may also be used to temporarily store various types of data that have been output or are to be output.

[0109] In some embodiments, the processor may be a central processing unit, a controller, a microcontroller, a microprocessor, or other data processing chip. The processor is generally used to control the overall operation of the computer device. In this embodiment, the processor is used to run the computer-readable instructions stored in the memory or process data, such as running the computer-readable instructions of the automatic boost control method of the turbine bypass system under the sodium-cooled fast reactor startup condition.

[0110] The network interface may include a wireless network interface or a wired network interface, which is generally used to establish a communication connection between the computer device and other electronic devices.

[0111] The method, device, computer equipment and storage device for automatic pressure boost control of the turbine bypass system under the sodium-cooled fast reactor startup condition of the present embodiment are as follows: under the sodium-cooled fast reactor startup condition, when the reactor power rises to 28% of the full power platform and the turbine is connected to the grid with load, a main steam header pressure setting value is generated according to the turbine sequential control main steam header pressure input signal, and the rising rate of the main steam header pressure setting value is set, so that the main steam header pressure setting value is automatically gradually approached to the main steam header target value; when the main steam header pressure setting value reaches the main steam header pressure target value, the turbine bypass system controls the main steam header pressure boost operation and the turbine bypass system controls the main steam header pressure to convert the turbine sequential control main steam header pressure operation, so as to achieve disturbance-free switching, avoid the inevitable uncertainty disturbance introduced into the three circuits of the sodium-cooled fast reactor caused by the operator's manual operation, and reduce the burden on the operator during the turbine grid-connected pressure boost process.

[0112] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for automatically boosting the pressure of a steam turbine bypass system under a sodium-cooled fast reactor startup condition, characterized in that: The steps include: Generate a pressure input signal for the main steam header of the steam turbine sequence control; According to the main steam header pressure input signal of the steam turbine sequential control, the main steam header pressure setting value is generated and output; The bypass valve total valve position setting value is calculated based on the difference between the main steam manifold pressure measurement value and the output main steam manifold pressure setting value; the bypass valve position setting value is calculated based on the bypass valve total valve position setting value, and the bypass valve position control signal is generated to adjust the bypass valve position to maintain the main steam manifold pressure at the set value.

2. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 1, characterized in that: When the operator inputs the steam turbine sequential control main steam header pressure enable command, a steam turbine sequential control main steam header pressure enable signal is generated.

3. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 1, characterized in that: If any of the following six conditions are met, the turbine sequential control main steam header pressure input signal will be reset: (1) The operator inputs the reset command for the main steam header pressure of the steam turbine sequence control; (2) There is a signal for the bypass valve to be put into manual control mode; (3) There is a turbine trip signal; (4) Emergency shutdown signal within 1 second; (5) When there is a signal for the turbine sequential control main steam header pressure to be put into operation, and the main steam header pressure measurement value is lower than 12.7 MPa for more than 2 seconds, and the turbine is not put into pressure control mode, the bypass valve total valve position setting value is less than 2.5%, and the bypass valve total valve position is less than 2.5%; (6) There is a signal to complete the main steam header pressure control by the turbine bypass system to convert the main steam header pressure into a turbine sequential control system.

4. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 3, characterized in that: If the following two conditions are met at the same time and last for 15 seconds, a signal is generated for the turbine bypass system to control the main steam header pressure and then switch to the turbine sequential control main steam header pressure completion signal for 60 seconds: (1) There is a pressure input signal for the main steam header of the steam turbine sequence control; (2) The main steam manifold pressure setting value is (13.60~13.75)MPa.

5. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 3, characterized in that: If the following two conditions are met at the same time and last for 5 seconds, a signal for the turbine to start pressure control mode is generated: (1) There is a pressure input signal for the main steam header of the steam turbine sequence control; (2) The pressure measurement value of the main steam manifold is (12.70~13.40)MPa.

6. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 1, characterized in that: Generate the main steam header pressure setting value and output it, including the following steps: Set the target value of main steam header pressure; Set the rising rate from the main steam header pressure set value to the main steam header pressure target value; The main steam header pressure setting value is generated according to the rising rate from the main steam header pressure setting value to the main steam header pressure target value.

7. The method for automatically controlling the pressure rise of a steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 6, characterized in that: Setting the target value of the main steam header pressure includes the following steps: When the turbine sequential control main steam header pressure input signal exists for 0.5s, the main steam header pressure target value is automatically set to 13.7MPa; Otherwise, set the main steam header pressure target value through the pressure setpoint station.

8. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 6, characterized in that: The rising rate of the main steam header pressure set value to the main steam header pressure target value is set by: When there is a turbine sequential control main steam header pressure input signal and a turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.009MPa / s; When there is a turbine sequential control main steam header pressure input signal and there is no turbine input pressure control mode signal, the rising rate from the main steam header pressure set value to the main steam header pressure target value is set to 0.0015MPa / s; When it does not belong to the above two situations, the rising rate from the main steam header pressure setting value to the main steam header pressure target value is set to infinity.

9. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 1, characterized in that: When there are fault signals of all the pressure transmitters of the main steam header, the lock generates the bypass valve position control signal according to the calculated bypass valve position setting value, and generates the bypass valve position control signal using the bypass valve position setting value input by the operator; When there is a signal that all the pressure transmitters of the main steam header have failed, the bypass valve position control signal generated according to the calculated bypass valve position setting value is unlocked, and the bypass valve position control signal is generated again using the calculated bypass valve position setting value.

10. The method for automatically boosting the steam turbine bypass system under the sodium-cooled fast reactor startup condition according to claim 1, characterized in that: The turbine bypass system is equipped with multiple bypass valves connected in parallel, and multiple bypass valves are put into regulation at the same time; According to the total valve position setting value of the bypass valve, the valve position setting value of the bypass valve is calculated based on the equation function f(x); f(x)=[min(nx-(n-1)×100,100); max(nx-(n-1)×100,0)]; Wherein, f(x) is the bypass valve position setting value, the minimum bypass valve position setting value is the smaller value between nx-(n-1)×100 and 100, the maximum bypass valve position setting value is the larger value between nx-(n-1)×100 and 0, x is the total bypass valve position setting value, and n is the number of bypass valves.

11. An automatic boost control device for a steam turbine bypass system under a sodium-cooled fast reactor startup condition, characterized in that: include: A start-up signal generation module is used to generate a start-up signal for the steam turbine sequential control main steam header pressure; A reset signal generation module is used to reset the steam turbine sequential control main steam header pressure input signal; A pressure setting value generating module is used to generate a main steam header pressure setting value according to a steam turbine sequential control main steam header pressure input signal; A completion signal generation module is used to generate a completion signal for converting the main steam header pressure of the steam turbine bypass system to the main steam header pressure of the steam turbine sequential control system; A control mode signal generating module, used for generating a steam turbine input pressure control mode signal; The valve position control signal generating module is used to calculate the bypass valve total valve position setting value according to the difference between the main steam header pressure measurement value and the main steam header pressure setting value; calculate the bypass valve position setting value according to the bypass valve total valve position setting value, and generate the bypass valve position control signal to adjust the bypass valve position to maintain the main steam header pressure at the set value; The locking module is used to lock or unlock the valve position control signal generating module to generate the bypass valve position control signal according to the calculated bypass valve position setting value; the bypass valve position control signal is generated by using the bypass valve position setting value manually input by the operator; The data are connected among the input signal generating module, the reset signal generating module, the pressure setting value generating module, the completion signal generating module, the control mode signal generating module, the valve position control signal generating module and the locking module.

12. A computer device comprising a memory and a processor, wherein the memory stores computer-readable instructions, characterized in that: When the processor executes the computer-readable instructions, the steps of the method for automatic pressure boost control of the turbine bypass system under the sodium-cooled fast reactor startup condition described in any one of claims 1-10 are implemented.

13. A computer-readable storage medium having computer-readable instructions stored thereon, characterized in that: When the computer-readable instructions are executed, the steps of the method for automatically controlling the pressure increase of the turbine bypass system under the sodium-cooled fast reactor startup condition described in any one of claims 1-10 are implemented.

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