A method and system for high temperature gas-cooled reactor helium flow control configuration

Abstract

The present invention discloses a method and system for high temperature gas-cooled reactor helium flow control configuration, including: obtaining the actual flow value of helium, optimizing the high temperature reactor helium control configuration module, and automatically realizing manual control in an emergency by using logic; and realizing automatic helium flow control by adjusting the parameters of the high temperature reactor helium controller. The present invention overcomes the difficulty in debugging the control system in the prior art, and the system is prone to instability when the control parameters are not set perfectly, triggering the action of the reactor protection system and causing unexpected events; and overcomes the problems of system instability and manual operation lag in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of helium flow control for high temperature reactors, and in particular to a method and system for controlling helium flow configuration for high temperature gas-cooled reactors. Background Art

[0002] In recent years, the high-temperature gas-cooled reactor is an advanced reactor with the characteristics of the fourth-generation nuclear power. It uses helium as a coolant to extract the fission heat of the core, and heats the water in the secondary circuit to form high-temperature and high-pressure steam to drive the steam turbine generator to generate electricity or directly provide high-temperature process heat for chemical companies.

[0003] The control of the helium flow rate in the primary loop of a high-temperature gas-cooled reactor directly affects the reactor power and the reactor inlet and outlet temperatures, and has a direct impact on the helium-to-water flow ratio, an important parameter of the reactor protection system. Therefore, the automatic control configuration of the helium flow rate is very important. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides a method and system for configuring helium flow control of a high temperature gas-cooled reactor to solve the problem in the existing configuration that when the controller parameter settings are not reasonable, the control process is easily unstable.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method for controlling helium flow configuration of a high temperature gas-cooled reactor, comprising:

[0009] Obtain the actual flow value of helium, optimize the high-temperature reactor helium control configuration module, and use logic to automatically implement manual control in emergency situations;

[0010] Automatic helium flow control is achieved by adjusting the parameters of the high temperature reactor helium controller.

[0011] As a preferred solution of the method for high-temperature gas-cooled reactor helium flow control configuration described in the present invention, wherein: the optimized high-temperature reactor helium control configuration module also includes using the setting module to input the flow setting value LLS into the SP pin of the PID control module after calculating through the SET2 module, the PV pin of the PID control module inputs the feedback real-time value of the helium blower speed, the RM pin of the PID control module is the control instruction of open-loop control or closed-loop control, and after the PID control module calculates and outputs, the logic is used to automatically realize manual control to exit the automatic control mode in an emergency.

[0012] As a preferred solution of the method for controlling the flow rate of helium in a high temperature gas-cooled reactor of the present invention, the method of automatically realizing manual control in an emergency by using logic includes:

[0013] If the input quality of the PID control module exceeds the H value, TZD is judged as true and the automatic control mode is exited through the hand operator;

[0014] If the input quality of the PID control module is lower than the L value, TZD is judged to be true and the automatic control mode is exited through the hand operator;

[0015] If the input quality of the PID control module does not exceed the H value, TZD is judged as false and the automatic mode continues;

[0016] If the input quality of the PID control module is not lower than the L value, TZD is judged as false and the automatic mode is maintained;

[0017] As a preferred solution of the method for controlling the flow rate of helium in a high temperature gas-cooled reactor of the present invention, the method of adjusting the parameters of the high temperature reactor helium controller includes the following steps:

[0018] Turn off the integral and differential actions and set the proportional gain coefficient to less than 0.3;

[0019] After the helium flow setting value is set to the current value, the helium flow control system is placed in an automatic adjustment state;

[0020] Determine whether the control output of the helium flow control system is stable. The judgment period is no less than 5 minutes. If the controller output is stable and the helium flow is stable at the set value, disturbance is applied.

[0021] If the controller output is unstable, exit the automatic mode;

[0022] Apply a disturbance to the helium flow setting value, the disturbance value is less than 0.1kg / s, and judge the response speed of the controller. If the response speed is slow, gradually increase the proportional gain;

[0023] Set the integration time to greater than 200s;

[0024] Apply a disturbance to the helium flow set value, the disturbance value is less than 0.1kg / s, and judge whether the control output of the helium flow control system is stable again. The judgment cycle is not less than 5 minutes. If the controller output is stable and the helium flow is stable at the set value, the disturbance is applied.

[0025] If the controller output is unstable, exit the automatic mode;

[0026] Gradually increase the integration time, with 50 seconds as one round;

[0027] Repeat the iteration until the most suitable integral time value and proportional gain coefficient are found. After the proportional gain and integral time are solidified, adjust the disturbance and observe the response characteristics. If the response characteristics still meet the controller performance requirements, the debugging is completed, otherwise readjust the parameters.

[0028] As a preferred solution of the method for high temperature gas-cooled reactor helium flow control configuration according to the present invention, wherein: the module for optimizing high temperature reactor helium control configuration comprises a GE module, a LE module and an AND module,

[0029] The GE module performs greater than or equal to logic operations and completes the following functions:

[0030] When input 1 is greater than or equal to input 2, the output is TURE;

[0031] When input 1 is less than input 2, the output is FALSE;

[0032] The LE module performs less than or equal to logic operations and completes the following functions:

[0033] When input 1 is less than or equal to input 2, the output is TURE;

[0034] When input 1 is greater than input 2, the output is FALSE;

[0035] The AND module performs logical AND operations and completes the following functions:

[0036] Performs a bitwise AND operation on the input variables.

[0037] In a second aspect, the present invention provides a high temperature gas-cooled reactor helium flow control configuration system, comprising:

[0038] The SET2 module is a SET POINT without BUP control. The ESP pin represents the external set value, PV represents the process value, PVU represents the PV upper limit, PVD represents the PV lower limit, CM represents the control mode, 1 represents BUP control, 0 represents KIC or RSS control, RM represents the working mode, 0 represents open loop, and 1 represents closed loop.

[0039] As a preferred solution of the high-temperature gas-cooled reactor helium flow control configuration system described in the present invention, the PID control module performs PID operation, the SP pin represents the set value, the PV pin represents the process value, the OC pin represents the feedforward compensation, when there is an input signal at the OC end, the output AV is to add the value of the OC end, TP represents the follow value of AV in open loop, RM represents the operating mode, KP represents the proportional coefficient, TI represents the integral time, KD represents the differential gain, TD represents the differential time, OT represents the output upper line of AV, OB represents the output lower limit of AV, PVU represents the upper limit of PV, and PVD represents the lower limit of PV.

[0040] As a preferred solution of the high-temperature gas-cooled reactor helium flow control configuration system described in the present invention, the AMAN2 module is a closed-loop analog hand operator without BUP control, the IN pin represents the valve position input, the SP pin represents the process set value input, the PV represents the process value, the LV pin represents the valve position analog feedback, the TP pin represents the AV tracking amount, the TSW represents the tracking switch, and the MA represents the automatic instruction.

[0041] In a third aspect, the present invention provides a computing device, comprising:

[0042] Memory, used to store programs;

[0043] A processor is used to execute the computer executable instructions, which, when executed by the processor, implement the steps of the method for configuring the helium flow control of a high temperature gas-cooled reactor.

[0044] In a fourth aspect, the present invention provides a computer-readable storage medium, comprising: when the program is executed by a processor, the steps of implementing the method for configuring the helium flow control of a high temperature gas-cooled reactor are implemented.

[0045] The beneficial effects of the present invention are as follows: the present invention overcomes the difficulty in debugging the control system in the prior art by optimizing the configuration and logic control of the high-temperature reactor helium control system, and overcomes the problems of system instability and manual operation lag in the prior art caused by incomplete setting of control parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0047] Figure 1A basic flow chart of a method for controlling helium flow rate of a high temperature gas-cooled reactor provided by an embodiment of the present invention;

[0048] Figure 2 An optimized logic configuration diagram of a method for controlling helium flow rate of a high temperature gas-cooled reactor provided by an embodiment of the present invention;

[0049] Figure 3 A logic diagram of an optimized method for controlling the flow rate of helium in a high temperature gas-cooled reactor according to an embodiment of the present invention; DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0053] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0054] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Example 1

[0057] Referring to the figure, an embodiment of the present invention provides a method for controlling the flow rate of helium in a high temperature gas-cooled reactor, including:

[0058] S1: Obtain the actual flow value of helium, optimize the high temperature reactor helium control configuration module, and use logic to automatically realize manual control in emergency situations;

[0059] Furthermore, the optimization of the high-temperature reactor helium control configuration module also includes using the setting module to input the flow setting value LLS into the SP pin of the PID control module after calculating through the SET2 module. The PV pin of the PID inputs the real-time feedback value of the helium fan speed. The RM pin of the PID is the control instruction for open-loop control or closed-loop control. After the PID module calculates and outputs, the logic is used to automatically realize manual control to exit the automatic control mode in an emergency.

[0060] It should be noted that the benefit of the above setting is that when the PID control becomes unstable, the controller will exit the automatic state and enter the manual state immediately, and the condition for exiting the automatic state is reversed by the action value of the protection variable, thereby avoiding accidental shutdown due to unreasonable control system parameters.

[0061] Furthermore, logic is used to automatically implement manual control in emergency situations, including:

[0062] If the input quality of the PID control module exceeds the H value, TZD is judged as true and the automatic control mode is exited through the hand operator;

[0063] If the input quality of the PID control module is lower than the L value, TZD is judged to be true and the automatic control mode is exited through the hand operator;

[0064] If the input quality of the PID control module does not exceed the H value, TZD is judged as false and the automatic mode continues;

[0065] If the input quality of the PID control module is not lower than the L value, TZD is judged as false and the automatic mode continues.

[0066] Furthermore, Figure 3As shown, the high temperature reactor helium control configuration module is optimized, including GE module, LE module and AND module.

[0067] The GE module performs greater than or equal to logic operations and completes the following functions:

[0068] When input 1 is greater than or equal to input 2, the output is TURE;

[0069] When input 1 is less than input 2, the output is FALSE;

[0070] The LE module performs less than or equal to logic operations and completes the following functions:

[0071] When input 1 is less than or equal to input 2, the output is TURE;

[0072] When input 1 is greater than input 2, the output is FALSE;

[0073] The AND module performs logical AND operations and completes the following functions:

[0074] Performs a bitwise AND operation on the input variables.

[0075] S2: Automatic helium flow control is achieved by adjusting the parameters of the high temperature reactor helium controller.

[0076] Furthermore, by adjusting the parameters of the high temperature reactor helium controller, the following steps are included:

[0077] Turn off the integral and differential actions and set the proportional gain coefficient to less than 0.3;

[0078] After the helium flow setting value is set to the current value, the helium flow control system is placed in an automatic adjustment state;

[0079] Determine whether the control output of the helium flow control system is stable. The judgment period is no less than 5 minutes. If the controller output is stable and the helium flow is stable at the set value, disturbance is applied;

[0080] If the controller output is unstable, exit the automatic mode;

[0081] Apply a disturbance to the helium flow setting value, the disturbance value is less than 0.1kg / s, and judge the response speed of the controller. If the response speed is slow, gradually increase the proportional gain;

[0082] Set the integration time to greater than 200s;

[0083] Apply a disturbance to the helium flow setting value, the disturbance value is less than 0.1kg / s, and judge whether the control output of the helium flow control system is stable again. The judgment cycle is not less than 5 minutes. If the controller output is stable and the helium flow is stable at the set value, the disturbance is applied;

[0084] If the controller output is unstable, exit the automatic mode;

[0085] Gradually increase the integration time, with 50 seconds as one round;

[0086] Repeat the iteration until the most suitable integral time value and proportional gain coefficient are found. After the proportional gain and integral time are solidified, adjust the disturbance and observe the response characteristics. If the response characteristics still meet the controller performance requirements, the debugging is completed, otherwise readjust the parameters.

[0087] This embodiment also provides a high temperature gas-cooled reactor helium flow control configuration system, including:

[0088] Furthermore, Figure 2 As shown, it includes a hand operator module (AMAN2 module), a PID control module, an actuator module (SET2 module) and a limit output module;

[0089] Configuration module introduction:

[0090] (1)PID:

[0091] This functional module can perform PID operation. The SP pin represents the set value, the PV pin represents the process value, and the OC pin represents feedforward compensation. When there is an input signal at the OC end, the output AV must add the value of the OC end. TP represents the follow value of AV in open loop, RM represents the operating mode, KP represents the proportional coefficient, TI represents the integral time, KD represents the differential gain, TD represents the differential time, OT represents the output upper limit of AV, OB represents the output lower limit of AV, PVU represents the upper limit of PV, and PVD represents the lower limit of PV.

[0092] (2) SET2:

[0093] The SET2 module is a SET POINT without BUP control. The ESP pin represents the external set value, PV represents the process value, PVU represents the PV upper limit, PVD represents the PV lower limit, CM represents the control mode, 1 represents BUP control, 0 represents KIC or RSS control, RM represents the working mode, 0 represents open loop, and 1 represents closed loop.

[0094] (3)AMAN2:

[0095] This function block is a closed-loop analog hand operator without BUP control. The IN pin represents the valve position input, the SP pin represents the process set value input, the PV represents the process value, the LV pin represents the valve position analog feedback, the TP pin represents the AV tracking amount, the TSW represents the tracking switch, and the MA represents the automatic instruction.

[0096] (4) LIMIT:

[0097] This function block represents a limit output module. The second pin of the module is the input process value. When the value is less than the value of the first pin, the value of the first pin is output. When the value is greater than the value of the third pin, the value of the third pin is output. When the value is between the first and third pins, the value of the second pin is output.

[0098] Furthermore, it also includes:

[0099] Memory, used to store programs;

[0100] A processor is used to load the program to execute the feature selection method for high-dimensional network traffic data.

[0101] This embodiment also provides a computer-readable storage medium storing a program, which, when executed by a processor, implements the feature selection method for high-dimensional network traffic data.

[0102] The storage medium proposed in this embodiment and the feature selection method for high-dimensional network traffic data proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0103] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ReadOnly, Memory, ROM), random access memory (RandomAccess Memory, RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform the methods of various embodiments of the present invention.

[0104] Example 2

[0105] Referring to Table 1, a method for configuring helium flow control of a high temperature gas-cooled reactor is provided for one embodiment of the present invention. In order to verify its beneficial effects, comparison results of two schemes are provided.

[0106] Table 1 Comparison table

[0107] Traditional configuration method This method stability 80％ 95％ Response time 30s 15s Manual intervention amount 8 times 2 times Debugging time 30h 10h

[0108] As can be seen from Table 1, the present invention has obvious advantages over traditional methods in key performance indicators such as stability, response time, manual intervention and debugging time. It can effectively solve the problem that when the controller parameter settings are not reasonable in the existing configuration, the control process is easily unstable, which triggers unexpected shutdown events; reduce manual intervention, and use logic to automatically realize automatic and manual control in emergency situations; reduce the difficulty of control system debugging and improve the control effect and operation reliability of high-temperature gas-cooled reactors.

[0109] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for controlling the helium flow rate of a high temperature gas-cooled reactor, characterized in that: include: Obtain the actual flow value of helium, optimize the high-temperature reactor helium control configuration module, and use logic to automatically implement manual control in emergency situations; Automatic helium flow control is achieved by adjusting the parameters of the high temperature reactor helium controller; The method of adjusting the parameters of the high temperature reactor helium controller comprises the following steps: Turn off the integral and differential actions and set the proportional gain coefficient to less than 0.3; After the helium flow setting value is set to the current value, the helium flow control system is placed in an automatic adjustment state; Determine whether the control output of the helium flow control system is stable. The judgment period is no less than 5 minutes. If the output of the PID control module is stable and the helium flow is stable at the set value, the disturbance is applied; If the controller output is unstable, exit the automatic mode; Apply a disturbance to the helium flow setting value, the disturbance value is less than 0.1kg / s, and judge the response speed of the PID control module. If the response speed is slow, gradually increase the proportional gain; Set the integration time to greater than 200s; Apply a disturbance to the helium flow set value, the disturbance value is less than 0.1kg / s, and judge whether the control output of the helium flow control system is stable again. The judgment cycle is not less than 5 minutes. If the output of the PID control module is stable and the helium flow is stable at the set value, the disturbance is applied; If the output of the PID control module is unstable, exit the automatic mode; Gradually increase the integration time, with 50 seconds as one round; Repeat the iteration until the most suitable integral time value and proportional gain coefficient are found. After solidifying the proportional gain and integral time, adjust the disturbance and observe the response characteristics. If the response characteristics still meet the performance requirements of the PID control module, the debugging is completed, otherwise readjust the parameters.

2. The method for controlling the flow rate of helium in a high temperature gas-cooled reactor according to claim 1, characterized in that: The optimized high temperature reactor helium control configuration module also includes using the setting module to input the flow setting value LLS into the SP pin of the PID control module after calculating it through the SET2 module, the PV pin of the PID control module inputs the feedback real-time value of the helium blower speed, the RM pin of the PID control module is the control instruction of open-loop control or closed-loop control, and after the PID control module calculates and outputs, the logic is used to automatically realize manual control to exit the automatic control mode in an emergency.

3. The method for controlling the helium flow rate of a high temperature gas-cooled reactor according to claim 1 or 2, characterized in that: The method of automatically implementing manual control in emergency situations using logic includes: If the input quality of the PID control module exceeds the H value, TZD is judged as true and the automatic control mode is exited through the hand operator; If the input quality of the PID control module is lower than the L value, TZD is judged to be true, and the automatic control mode is exited through the hand operator; If the input quality of the PID control module does not exceed the H value, TZD is judged as false and the automatic mode continues; If the input quality of the PID control module is not lower than the L value, TZD is judged as false and the automatic mode continues.

4. The method for controlling the flow rate of helium in a high temperature gas-cooled reactor according to claim 3, characterized in that: The optimized high temperature reactor helium control configuration module includes a GE module, a LE module and an AND module. The GE module performs greater than or equal to logic operations and completes the following functions: When input 1 is greater than or equal to input 2, the output is TURE; When input 1 is less than input 2, the output is FALSE; The LE module performs less than or equal to logic operations and completes the following functions: When input 1 is less than or equal to input 2, the output is TURE; When input 1 is greater than input 2, the output is FALSE; The AND module performs logical AND operations and completes the following functions: Performs a bitwise AND operation on the input variables.

5. A configuration system based on the method for configuring the high temperature gas-cooled reactor helium flow control according to claim 2, characterized in that: The SET2 module is a SET POINT without BUP control. The ESP pin represents the external set value, PV represents the process value, PVU represents the PV upper limit, PVD represents the PV lower limit, CM represents the control mode, 1 represents BUP control, 0 represents KIC or RSS control, RM represents the working mode, 0 represents open loop, and 1 represents closed loop.

6. The configuration system of the method for configuring the high temperature gas-cooled reactor helium flow control as claimed in claim 2, characterized in that: The PID control module performs PID calculations. The SP pin represents the set value, the PV pin represents the process value, and the OC pin represents feedforward compensation. When there is an input signal at the OC end, the output AV must add the value of the OC end. TP represents the follow value of AV in open loop, RM represents the operating mode, KP represents the proportional coefficient, TI represents the integral time, KD represents the differential gain, TD represents the differential time, OT represents the output upper limit of AV, OB represents the output lower limit of AV, PVU represents the upper limit of PV, and PVD represents the lower limit of PV.

7. An electronic device, characterized in that: include: Memory, used to store programs; A processor is used to load the program to execute the steps of the method for configuring helium flow control of a high temperature gas-cooled reactor as described in any one of claims 1 to 4.

8. A computer-readable storage medium storing a program, characterized in that: When the program is executed by a processor, the steps of the method for configuring helium flow control for a high temperature gas-cooled reactor as described in any one of claims 1 to 4 are implemented.

Images