Control method and control system of secondary circuit water quality monitoring system

Abstract

The invention discloses a control method and a control system of a secondary circuit water quality monitoring system, and relates to the technical field of automation control, the method is applied to the control system, the control system comprises a master control subsystem and at least one slave control subsystem, and the master control subsystem is in communication connection with the slave control subsystem; the slave control subsystems are respectively in communication connection with respective associated secondary loop water quality monitoring systems, and the method comprises the following steps: acquiring a first system control instruction issued by a user through the master control subsystem, and sending the first system control instruction to the slave control subsystems; sending the first system control instruction to a respective associated secondary loop water quality monitoring system through the slave control subsystem; wherein the first system control instruction is used for controlling each secondary loop water quality monitoring system. According to the invention, the effect of automatically controlling the secondary circuit water quality monitoring system is realized, manual guarding of operators is not needed, the labor cost is reduced, and the control efficiency of the secondary circuit water quality monitoring system is improved.

Description

Technical Field

[0001] The present invention relates to the field of automation control technology, and in particular to a control method and control system for a secondary circuit water quality monitoring system. Background Art

[0002] The secondary circuit water quality monitoring system is a comprehensive system used in nuclear power plants to provide real-time monitoring, early warning, and intelligent control of secondary circuit water quality. Its core goal is to ensure the safe operation of critical equipment and prevent corrosion, scaling, and the spread of radioactive contamination by precisely controlling water quality parameters.

[0003] In the prior art, operators usually stand guard in the control room of the secondary circuit water quality monitoring system for 24 hours and control the secondary circuit water quality monitoring system through manual on-site control to ensure the monitoring of the secondary circuit water quality.

[0004] However, this manual on-site control method will undoubtedly generate large manpower costs and lead to low control efficiency. Summary of the Invention

[0005] The present invention provides a control method and control system for a secondary circuit water quality monitoring system, so as to solve the problems of high labor cost and low control efficiency in the existing control method for the secondary circuit water quality monitoring system.

[0006] According to one aspect of the present invention, a control method for a secondary circuit water quality monitoring system is provided, which is applied to a control system, wherein the control system includes a master control subsystem and at least one slave control subsystem, wherein the master control subsystem is communicatively connected to the slave control subsystem; and the slave control subsystems are respectively communicatively connected to their associated secondary circuit water quality monitoring systems. The method comprises:

[0007] Acquire a first system control instruction issued by a user through the master control subsystem, and send the first system control instruction to the slave control subsystem;

[0008] The first system control instruction is sent to the respectively associated secondary circuit water quality monitoring system through the slave control subsystem; wherein, the first system control instruction is used to control each of the secondary circuit water quality monitoring systems.

[0009] According to another aspect of the present invention, a control system is provided, comprising a master control subsystem and at least one slave control subsystem, wherein the master control subsystem is communicatively connected to the slave control subsystem; and the slave control subsystems are respectively communicatively connected to their respective associated secondary circuit water quality monitoring systems, wherein:

[0010] The master control subsystem is configured to obtain a first system control instruction issued by a user and send the first system control instruction to the slave control subsystem;

[0011] The slave control subsystem is used to send the first system control instruction to the respective associated secondary circuit water quality monitoring system; wherein, the first system control instruction is used to control each of the secondary circuit water quality monitoring systems.

[0012] The present invention realizes the effect of automatically controlling the secondary circuit water quality monitoring system, does not require manual operation by operating personnel, reduces labor costs, and improves the control efficiency of the secondary circuit water quality monitoring system.

[0013] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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 work.

[0015] Figure 1 A schematic structural diagram of a control system provided in Example 1 of the present invention;

[0016] Figure 2 A schematic diagram of the structure of a control system provided in the second embodiment of the present invention;

[0017] Figure 3 This is a flow chart of a control method for a secondary circuit water quality monitoring system provided in Example 3 of the present invention;

[0018] Figure 4 A flow chart of a control method for a secondary circuit water quality monitoring system provided in a fourth embodiment of the present invention;

[0019] Figure 5 This is a flowchart of a system data monitoring method provided in Example 5 of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", "candidate", "target", "first category", "second category", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Example 1

[0023] Figure 1 This is a structural diagram of a control system provided by the first embodiment of the present invention, which can be applied to the automatic control of the secondary circuit water quality monitoring system. Figure 1 As shown, the control system 100 includes a master control subsystem 101 and at least one slave control subsystem 102. The master control subsystem 101 is in communication with the slave control subsystem 102; the slave control subsystems 102 are in communication with their respective associated secondary circuit water quality monitoring systems.

[0024] The master control subsystem 101 is configured to obtain a first system control instruction issued by a user and send the first system control instruction to the slave control subsystem 102 .

[0025] The master control subsystem 101 refers to the core control subsystem within the control system 100, which is used to centrally control and coordinate the operation of the slave control subsystems 102. For example, if the secondary circuit water quality monitoring system is used to monitor the secondary circuit water quality of a nuclear power plant, the master control subsystem 101 may be a power plant control system PLS, for example. This embodiment uses the power plant control system PLS as an example for explanation, and does not limit the specific type of the master control subsystem 101.

[0026] A user is any natural person with control authority over master control subsystem 101, such as an operator, technician, engineer, or the like. The user issues a command signal through the host computer of master control subsystem 101, which generates a first system control instruction. Master control subsystem 101 receives the first system control instruction issued by the user through a communication protocol with its host computer. Furthermore, master control subsystem 101 transmits the first system control instruction to each slave control subsystem 102 through a communication protocol between the master control subsystem 101 and the slave control subsystem 102.

[0027] The slave control subsystem 102 is used to send the first system control instructions to the respective associated secondary circuit water quality monitoring systems.

[0028] The slave subsystem 102 is the subsystem in the control system 100 responsible for executing instructions issued by the master subsystem 101. It forms a master-slave collaborative architecture with the master subsystem 101, distributing control instructions from the primary system via a communication protocol. For example, if the secondary water quality monitoring system is used to monitor the secondary water quality of a nuclear power plant, the slave subsystem 102 may be a PLC (Programmable Logic Controller). This embodiment uses a PLC as the slave subsystem 102 as an example for explanation and does not limit the specific type of the slave subsystem 102.

[0029] Each slave control subsystem 102 is associated with at least one secondary water quality monitoring system. In other words, any slave control subsystem 102 can be associated with a single secondary water quality monitoring system or at least two different secondary water quality monitoring systems. Any slave control subsystem 102 can exchange data with its associated secondary water quality monitoring system, meaning it can send data to or retrieve data from its associated secondary water quality monitoring system.

[0030] The secondary water quality monitoring system is a comprehensive system used in nuclear power plants to provide real-time monitoring, early warning, and intelligent control of secondary water quality. This system includes, but is not limited to, a secondary dosing system, a secondary sampling system, and a condensate polishing system. This embodiment does not limit the specific type of secondary water quality monitoring system.

[0031] Each slave control subsystem 102 transmits the first system control instruction to its associated secondary water quality monitoring system via the communication channel between the slave control subsystems 102 and the associated secondary water quality monitoring system. The first system control instruction is used to control each secondary water quality monitoring system, for example, to control the local equipment of the secondary water quality monitoring system, such as the local contactor, actuator, and inverter.

[0032] The embodiment of the present invention sets up a control system including a master control subsystem and at least one slave control subsystem. The master control subsystem is used to obtain a first system control instruction issued by a user and send the first system control instruction to the slave control subsystem; the slave control subsystem is used to send the first system control instruction to each associated secondary circuit water quality monitoring system, so as to control each secondary circuit water quality monitoring system, thereby achieving the effect of automatic control of the secondary circuit water quality monitoring system, eliminating the need for manual operation personnel, reducing labor costs, and improving the control efficiency of the secondary circuit water quality monitoring system.

[0033] The control system provided by the embodiment of the present invention can execute the control method of the secondary circuit water quality monitoring system provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0034] Example 2

[0035] Figure 2 This is a schematic diagram of a control system provided by the second embodiment of the present invention. This embodiment further optimizes and expands the above embodiment and can be combined with the above optional structures. Figure 2 As shown, the control system includes:

[0036] Based on the above embodiment, the master subsystem 101 includes a master control module 103 and a master communication module 104 . The master control module 103 and the master communication module 104 are communicatively connected to each other, and the master communication module 104 is communicatively connected to the slave subsystem 102 .

[0037] The main control module 103 represents the controller of the main control subsystem 101 and is an independent functional unit for managing and automatically controlling the main control subsystem 101. For example, the main control module 103 may be a CPU, etc. The main control communication module 104 is an independent functional unit in the main control subsystem 101 for implementing data transmission. Its types include, but are not limited to, Wi-Fi modules, Bluetooth modules, ZigBee modules, cellular network modules, etc. This embodiment does not limit the specific type of the main control communication module 104.

[0038] The master control module 103 is configured to obtain a first system control instruction and send the first system control instruction to the master communication module 104 via a communication protocol with the master communication module 104 .

[0039] The master control communication module 104 is configured to send the first system control instruction to each slave control subsystem 102 through a communication protocol with each slave control subsystem 102 .

[0040] Based on the above embodiment, the slave control subsystem 102 includes a slave control module 105, a slave control communication module 106 and an output module 107. The slave control module 105 is respectively communicated with the master control communication module 104 and the slave control communication module 106. The slave control communication module 106 and the output module 107 are connected via a bus. The output module 107 is communicated with the secondary water quality monitoring system associated with the slave control subsystem 102.

[0041] The slave control module 105 represents the controller of the slave subsystem 102 and is an independent functional unit for managing and automatically controlling the slave subsystem 102. For example, the slave control module 105 may be a CPU, etc. The slave communication module 106 is an independent functional unit in the slave subsystem 102 for implementing data transmission. Its types include, but are not limited to, Wi-Fi modules, Bluetooth modules, ZigBee modules, cellular network modules, etc. This embodiment does not limit the specific type of the slave communication module 106.

[0042] Output module 107 represents the functional unit within slave control subsystem 102 responsible for connecting slave control communication module 106 and the secondary water quality monitoring system, thereby transmitting control instructions from the first system to the secondary water quality monitoring system. For example, output module 107 may be an I / O module (Input / Output Module) that integrates data input / output functions.

[0043] The slave control module 105 is configured to obtain the first system control instruction sent by the master communication module 104 , and send the first system control instruction to the slave communication module 106 via the communication protocol between the slave communication module 106 and the master communication module 104 .

[0044] The slave control communication module 106 is configured to send the first system control instruction to the output module 107 via the backplane bus.

[0045] The output module 107 is used to send the first system control instruction to the secondary circuit water quality monitoring system associated with the slave control subsystem 102 .

[0046] Based on the above embodiment, the slave control subsystem 102 includes an input module 108 , which is connected to the slave control communication module 106 via a bus and is in communication with the associated secondary circuit water quality monitoring system.

[0047] The input module 108 represents a functional unit in the slave control subsystem 102 that is responsible for connecting the slave control communication module 106 and the secondary circuit water quality monitoring system, collecting signals from the local equipment of the secondary circuit water quality monitoring system, and transmitting the signals to the slave control communication module 106. For example, the input module 108 may be an I / O module (Input / Output Module) that integrates data input / output functions.

[0048] The input module 108 is used to collect local device signals of the secondary circuit water quality monitoring system associated with the slave control subsystem 102 and send the local device signals to the slave control communication module 106 via the backplane bus.

[0049] The slave communication module 106 is used to send the local device signal to the slave control module 105 through the communication protocol between the slave control module 105 and the slave communication module 106 .

[0050] The slave control module 105 is further configured to send the local device signal to the master communication module 104 via the communication protocol between the slave control module 105 and the master communication module 104 .

[0051] The master communication module 104 is further configured to send the local device signal to the master control module 103 via a communication protocol with the master control module 103 , so that the master control module 103 can visualize the local device signal.

[0052] On the basis of the above embodiment, the slave control subsystem 102 further includes a host computer module 109 , and the host computer module 109 is communicatively connected to the slave control module 105 .

[0053] The host computer module 109 is used to obtain the target control source set by the user for the secondary circuit water quality monitoring system associated with the slave control subsystem 102. When the target control source is the master control module 103, the host computer module 109 sets the module control state of the slave control module 105 to the master control state; when the target control source is the slave control module 105, the host computer module 109 sets the module control state of the slave control module 105 to the slave control state.

[0054] Optionally, the master subsystem 101 is equipped with two backplanes, two master control modules 103, and ten master communication modules 104; each slave subsystem 102 is equipped with two backplanes, two slave control modules 105, and six slave communication modules 106. Reinforced RJ45 connectors are used to establish Ethernet communication between the master subsystem 101 and each slave subsystem 102. Ethernet communication simplifies wiring, reduces points of failure, is highly reliable, and significantly increases communication speeds compared to coaxial cable communication.

[0055] Optionally, the two slave control modules 105 set in the slave control subsystem 102 are a pair of redundantly configured control modules, which form a redundant ring network architecture with each input module 108 / output module 107 through Ethernet. The ring network architecture can achieve self-healing management when a single input module 108 / output module 107 fails, thereby greatly improving the reliability of the slave control subsystem 102.

[0056] Example 3

[0057] Figure 3 This is a flowchart of a control method for a secondary circuit water quality monitoring system provided in the third embodiment of the present invention. This embodiment is applicable to the case of automatically controlling a secondary circuit water quality monitoring system. This method can be applied to the control system disclosed in this embodiment. The control system includes a master control subsystem and at least one slave control subsystem. The master control subsystem and the slave control subsystem are in communication connection with each other; the slave control subsystems are in communication connection with their respective associated secondary circuit water quality monitoring systems. Figure 3 As shown, the method includes:

[0058] S301: Obtain a first system control instruction issued by a user through the master control subsystem, and send the first system control instruction to the slave control subsystem.

[0059] In one embodiment, a user issues a command signal through a host computer of the master control subsystem to generate a first system control command. The first system control command issued by the user is obtained through a communication protocol between the master control subsystem and its host computer. Furthermore, the master control subsystem transmits the first system control command to each slave control subsystem through a communication protocol between the master control subsystem and each slave control subsystem.

[0060] S302: Send the first system control instruction to the respective associated secondary circuit water quality monitoring systems through the slave control subsystem.

[0061] Among them, the first system control instruction is used to control each secondary circuit water quality monitoring system.

[0062] In one embodiment, each slave control subsystem sends the first system control instruction to its associated secondary circuit water quality monitoring system via a communication channel between the slave control subsystem and its associated secondary circuit water quality monitoring system.

[0063] In the embodiment of the present invention, a master control subsystem obtains a first system control instruction issued by a user, and sends the first system control instruction to a slave control subsystem, which then sends the first system control instruction to the respectively associated secondary circuit water quality monitoring system through the slave control subsystem, thereby achieving the effect of automatic control of the secondary circuit water quality monitoring system, eliminating the need for manual operation personnel, reducing labor costs, and improving the control efficiency of the secondary circuit water quality monitoring system.

[0064] Optionally, sending the first system control instruction to the slave control subsystem includes:

[0065] The first system control instruction is parsed to obtain the target subsystem identifier it carries, and the target slave-controlled subsystem is determined from the slave-controlled subsystems based on the target subsystem identifier and the candidate subsystem identifiers corresponding to the slave-controlled subsystems; the first system control instruction is sent to the target slave-controlled subsystem.

[0066] Since there is at least one slave subsystem, and the first system control instruction may only target one or several slave subsystems, rather than all of them, the first system control instruction carries the target subsystem identifier of the slave subsystem targeted by the first system control instruction. The target subsystem identifier is a unique identification tag for the slave subsystem targeted by the first system control instruction. Correspondingly, the candidate subsystem identifier is a unique identification tag pre-assigned to each slave subsystem.

[0067] In one embodiment, the master control subsystem parses the first system control instruction to obtain at least one target subsystem identifier carried therein, and also obtains the corresponding candidate subsystem identifiers pre-assigned to each slave control subsystem. Furthermore, the master control subsystem matches the target subsystem identifier with each candidate subsystem identifier, and based on the matching results, determines from the slave control subsystem the slave control subsystem targeted by the first system control instruction as the target slave control subsystem.

[0068] For example, assuming that the target subsystem identifier is "aabbcc", and the candidate subsystem identifier pre-assigned to the candidate slave subsystem A is "aabbcc", that is, the candidate subsystem identifier assigned to the candidate slave subsystem A matches the target subsystem identifier, then the candidate slave subsystem A will be used as the target slave subsystem.

[0069] Furthermore, through the communication protocol between the master control subsystem and the target slave control subsystem, the first system control instruction is sent to the target slave control subsystem through the master control subsystem to control the target slave control subsystem.

[0070] The target subsystem identifier carried by the first system control instruction is obtained by parsing the first system control instruction, and the target slave subsystem is determined from the slave subsystem according to the target subsystem identifier and the candidate subsystem identifiers corresponding to the slave subsystems; the first system control instruction is sent to the target slave subsystem. The beneficial effects are:

[0071] First, system control instructions are unicast only to the target slave control subsystem, avoiding invalid broadcast traffic and significantly reducing the risk of network congestion.

[0072] Secondly, by comparing hardware-level subsystem identifications, the complexity of selecting the target slave subsystem is reduced, and the CPU usage of the master subsystem is reduced.

[0073] Thirdly, by pre-storing the candidate subsystem identifiers, the first system control instruction can be directly called when parsing, thereby shortening the response delay.

[0074] Example 4

[0075] Figure 4 This is a flowchart of a control method for a two-circuit water quality monitoring system provided by the fourth embodiment of the present invention. This embodiment further optimizes and expands the above embodiment and can be combined with the above optional implementation methods. Figure 4 As shown, the method includes:

[0076] S401: Obtain a first system control instruction through a main control module, and send the first system control instruction to a main control communication module.

[0077] In one embodiment, the first system control instruction is acquired by the main control module, and the first system control instruction is sent to the main control communication module by the main control module through the communication protocol between the main control module and the main control communication module.

[0078] S402: Send the first system control instruction to the slave control subsystem through the master control communication module.

[0079] In one embodiment, the first system control instruction is sent to each slave control subsystem through the master control communication module via a communication protocol between the master control communication module and each slave control subsystem.

[0080] S403: Obtain, through the slave control module, a first system control instruction sent by the master communication module, and send the first system control instruction to the slave communication module.

[0081] In one embodiment, the slave control module in the slave subsystem obtains the first system control instruction sent by the master communication module, and sends the first system control instruction to the slave communication module through the slave control module through the communication protocol between the slave communication module and the slave communication module.

[0082] S404: Send the first system control instruction to the output module through the slave control communication module.

[0083] In one embodiment, the first system control instruction is sent to the output module via the backplane bus through the slave control module.

[0084] S405: Send the first system control instruction to the associated secondary circuit water quality monitoring system through the output module.

[0085] In one embodiment, the first system control instruction is sent to the secondary circuit water quality monitoring system associated with the slave control subsystem via the output module.

[0086] The master control module obtains the first system control instruction and sends the first system control instruction to the master communication module; the master communication module sends the first system control instruction to the slave subsystem; the slave control module obtains the first system control instruction sent by the master communication module and sends the first system control instruction to the slave communication module; the slave communication module sends the first system control instruction to the output module; the output module sends the first system control instruction to the associated secondary circuit water quality monitoring system. The beneficial effects are:

[0087] First, physical / logical separation is achieved through modular design, so when a single module fails, the entire system will not be paralyzed.

[0088] Secondly, the control module is decoupled from the communication module. When the control module continuously obtains new instructions, the communication module can synchronously transmit historical instructions to avoid resource congestion.

[0089] Thirdly, the main control module is not directly connected to the secondary circuit water quality monitoring system, but is forwarded through the output module of the slave control subsystem to form a safe isolation zone, blocking direct external attacks on the main control module.

[0090] Fourthly, the output module serves as a unified interface layer and can adapt to secondary-circuit water quality monitoring systems with different protocols without modifying the logic of the main control module, thus achieving the effect of flexible access to heterogeneous systems.

[0091] Optionally, the method further includes:

[0092] A1. Collect the local equipment signals of the associated secondary circuit water quality monitoring system through the input module and send the local equipment signals to the slave control communication module.

[0093] Local device signals refer to signals corresponding to local devices included in the secondary water quality monitoring system. Local devices are devices installed directly near the secondary water quality monitoring system and used to perform monitoring, control, or processing functions, such as switches, transmitters, and resistors. Local device signals can include voltage, current, resistance, and other signals.

[0094] In one embodiment, the local device signals of the associated secondary circuit water quality monitoring system are collected through the input module, and the local device signals are sent to the slave control communication module through the backplane bus.

[0095] B1. Send the local device signal to the slave control module through the slave communication module.

[0096] In one embodiment, the local device signal is sent to the slave control module via the slave communication module through a communication protocol between the slave communication module and the slave control module.

[0097] C1. Send the local device signal to the master communication module through the slave control module.

[0098] In one embodiment, the local device signal is sent to the master communication module via the slave control module through a communication protocol between the slave control module and the master communication module.

[0099] D1. Send the local device signal to the main control module through the main control communication module, so that the main control module can visualize the local device signal.

[0100] In one embodiment, the local device signal is sent to the main control module via the main control communication module through the communication protocol between the main control communication module and the main control module. The local device signal is finally displayed on the main control module screen through the main control module screen configuration.

[0101] The input module collects the local device signals of the associated secondary circuit water quality monitoring system and sends the local device signals to the slave communication module; the slave communication module sends the local device signals to the slave control module; the slave control module sends the local device signals to the master communication module; the master communication module sends the local device signals to the master control module, so that the master control module can visualize the local device signals. The beneficial effects are:

[0102] First, the input module is directly connected to the local equipment to achieve accurate signal collection of the local equipment and avoid signal interference.

[0103] Secondly, the slave control subsystem and the master control subsystem are processed in layers to reduce the load pressure of a single system and support large-scale distributed deployment.

[0104] Thirdly, through on-site equipment signal life analysis, hardware failures can be warned in advance, and the spare parts replacement cycle is upgraded from passive response to planned maintenance.

[0105] Optionally, the method further includes:

[0106] A2. Obtain the target control source set by the user for the associated secondary circuit water quality monitoring system through the host computer module.

[0107] Among them, the target control source refers to the device that has control authority over the secondary circuit water quality monitoring system. The target control source is the master control module or the slave control module, that is, the secondary circuit water quality monitoring system is controlled by the master control module, or the secondary circuit water quality monitoring system is controlled by the slave control module.

[0108] In one embodiment, a master control module / slave control module control source selection page is displayed in the host computer module. The user selects a control source from the master control module / slave control module for the associated secondary circuit water quality monitoring system in the host computer module. The control source set by the user for the associated secondary circuit water quality monitoring system is obtained by the host computer module as a target control source.

[0109] B2. When the target control source is a master control module, the module control state of the slave control module is set to the master control state through the host computer module.

[0110] In one embodiment, when the target control source is the master control module, the module control state of the slave control module is set to the master control state through the upper computer module, and the instructions issued by the slave control module itself are shielded in the slave control module logic program, that is, only the master control module is supported to control the slave control module.

[0111] C2. When the target control source is a slave control module, the module control state of the slave control module is set to the slave control state through the host computer module.

[0112] In one embodiment, when the target control source is a slave control module, the module control state of the slave control module is set to a slave control state through the upper computer module, and the instructions issued by the master control module are shielded in the slave control module logic program, that is, only the slave control module itself is supported to control the slave control module.

[0113] Optionally, in order to ensure the safety of the initial state of the slave control module, the initial value of the control source selection signal is set to 0, and when the signal is 0, it is controlled by the slave control module, and when the signal is 1, it is controlled by the master control module. In this way, when the slave control module is restarted, it defaults to being controlled by the slave control module itself, thus avoiding the possibility of abnormal operation of the device when the slave control module is restarted.

[0114] The host computer module obtains the target control source set by the user for the associated secondary circuit water quality monitoring system; when the target control source is the master control module, the host computer module sets the module control state of the slave control module to the master control state; when the target control source is the slave control module, the host computer module sets the module control state of the slave control module to the slave control state. The beneficial effect is that when the target control source is set to the master control module, the slave control module automatically switches to execution mode, preventing local misoperation from interfering with the core control logic. If the master control module is damaged, the slave control module can maintain basic operation based on cached instructions, reducing the risk of system shutdown.

[0115] Optionally, obtaining, by the slave control module, a first system control instruction sent by the master communication module includes:

[0116] The current module control state is determined by the slave control module; when the module control state is the master control state, the first system control instruction sent by the master communication module is obtained by the slave control module.

[0117] In one embodiment, the current module control state is determined by the slave control module. When it is determined that the module control state is the master control state, the slave control module obtains the first system control instruction sent by the master communication module.

[0118] The current module control state is determined by the slave control module; when the module control state is the master control state, the first system control instruction sent by the master communication module is obtained by the slave control module. The beneficial effect is that the slave control module detects the module control state in real time, and automatically switches to the instruction receiving mode when the master control state is activated, avoiding master-slave control logic conflicts.

[0119] Optionally, the method further includes:

[0120] A3. Determine the current module control status through the slave control module.

[0121] B3. When the module control state is the slave control state, the slave control module obtains the second system control instruction issued by the user, and sends the second system control instruction to the slave communication module.

[0122] In one embodiment, a user issues a command signal through a host computer of the slave subsystem to generate a second system control command. The second system control command issued by the user is obtained through a communication protocol between the slave control module and the host computer. Furthermore, the second system control command is sent to the slave communication module through a communication protocol between the slave control module and the slave communication module.

[0123] C3. Send the second system control instruction to the output module through the slave control communication module.

[0124] D3. Send the second system control instruction to the associated secondary circuit water quality monitoring system through the output module.

[0125] The slave second system control instruction is used to control the associated secondary circuit water quality monitoring system.

[0126] The current module control state is determined by the slave control module; when the module control state is the slave control state, the second system control instruction issued by the user is obtained by the slave control module, and the second system control instruction is sent to the slave communication module; the second system control instruction is sent to the output module through the slave communication module; and the second system control instruction is sent to the associated secondary circuit water quality monitoring system through the output module. The beneficial effects are:

[0127] First, when the module control state is the slave control state, the slave control module directly obtains instructions to avoid system paralysis due to interruption of the communication link.

[0128] Secondly, the slave control module has built-in edge computing capabilities, which can directly parse instructions and drive the output module, avoiding the protocol conversion overhead of the master control communication.

[0129] Example 5

[0130] Figure 5 This is a flowchart of a system data monitoring method provided by the fifth embodiment of the present invention, which is applicable to uploading the system data of the secondary circuit water quality monitoring system to the main control module for monitoring the system data of the secondary circuit water quality monitoring system. This embodiment further optimizes and expands the above embodiment and can be combined with the above optional implementation methods. Figure 5 As shown, the method includes:

[0131] S501: Acquire stored first system data through a first slave control module of a first slave control subsystem.

[0132] Among them, the first slave control subsystem is a slave control subsystem associated with the first type of secondary loop water quality monitoring system, the first system data is the system data of the first type of secondary loop water quality monitoring system, and the first type of secondary loop water quality monitoring system is a secondary loop dosing system and / or a secondary loop sampling system.

[0133] The secondary circuit dosing system is referred to as CFS. By adding ammonia solution and hydrazine solution to the CDS (condensate system), FWS (main feed water system), BDS (steam generator blowdown system) and TCS (conventional island closed cooling water system), it can regulate the water quality of the secondary circuit system of the power plant, reduce oxygen corrosion and other forms of chemical erosion, and improve the availability and service life of the thermal system equipment, thereby ensuring the long-term and stable operation of the power plant.

[0134] The Secondary Sampling System, abbreviated as SSS, collects representative steam and water samples from the secondary system for chemical analysis, supporting all plant operation modes. This includes pressure regulation, flow regulation, and temperature control of the water samples.

[0135] In one embodiment, the first system data that needs to be sent to the master control module for data monitoring is copied to a separate register area of ​​the first slave control module through the first slave control module of the first slave subsystem.

[0136] S502 : Send the first system data to the first slave communication module of the second slave subsystem through the first slave control module, and send the first system data to the second slave control module of the second slave subsystem through the first slave communication module.

[0137] Among them, the second slave control subsystem is a slave control subsystem associated with the second type of secondary circuit water quality monitoring system, and the second type of secondary circuit water quality monitoring system is a condensate polishing system.

[0138] The condensate polishing system, referred to as CPS, is a full-flow side-stream polishing system. It is put into operation when abnormal water chemistry conditions occur in the secondary circuit during unit startup, shutdown and power operation. During normal power operation, when the secondary circuit water quality meets the requirements, the condensate polishing system does not need to be operated.

[0139] In one embodiment, the first system data in the separate register area is read by the first slave control module, and the first system data is sent to the first slave communication module of the second slave subsystem through the communication protocol between the first slave communication module and the second slave subsystem.

[0140] Furthermore, the first slave communication module sends the first system data to the second slave control module of the second slave subsystem through the communication protocol between the first slave communication module and the second slave control module of the second slave subsystem.

[0141] S503 : The second system data and the first system data are packaged by the second slave control module to generate packaged system data, and the packaged system data is sent to the master communication module.

[0142] Among them, the second system data is the system data of the second type of secondary circuit water quality monitoring system.

[0143] In one embodiment, the second slave control module packages the second system data, which needs to be sent to the master control module for data monitoring, with the first system data and places it in a separate register area within the second slave control module. Furthermore, through a communication protocol with the master communication module, the packaged system data is read from the separate register area and sent to the master communication module.

[0144] S504 : Send the packaging system data to the main control module through the main control communication module, so that the main control module monitors the packaging system data.

[0145] In one embodiment, the main control communication module sends the packaged system data to the main control control module via a communication protocol between the main control communication module and the main control module. The main control module performs a data monitoring operation on the packaged system data.

[0146] The first system data stored is acquired through the first slave control module of the first slave subsystem; the first system data is sent to the first slave communication module of the second slave subsystem through the first slave control module, and the first system data is sent to the second slave control module of the second slave subsystem through the first slave communication module; the second system data and the first system data are packaged by the second slave control module to generate packaged system data, and the packaged system data is sent to the master communication module; the packaged system data is sent to the master control module through the master communication module, so that the master control module monitors the packaged system data. The beneficial effects are:

[0147] First, by first transmitting the first system data to the second slave subsystem, and then having the second slave subsystem upload the first system data and the second system data to the master control module, changes on the master subsystem side can be minimized and the difficulty of implementing the solution can be reduced.

[0148] Secondly, the second slave control module performs data packaging nearby, shortening the data processing chain of the master control module and reducing data monitoring response delay.

[0149] Thirdly, if the first slave control communication module fails, it only affects the data collection of a single system. The second slave control module can still send the packaged inventory data to ensure the continuity of data monitoring.

[0150] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0151] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A control method for a secondary circuit water quality monitoring system, characterized in that: Applied to a control system, the control system includes a master control subsystem and at least one slave control subsystem, the master control subsystem and the slave control subsystem being communicatively connected; The slave control subsystems are respectively connected to the respective associated secondary circuit water quality monitoring systems in a communication manner, and the method includes: Acquire a first system control instruction issued by a user through the master control subsystem, and send the first system control instruction to the slave control subsystem; The first system control instruction is sent to the respectively associated secondary circuit water quality monitoring system through the slave control subsystem; wherein, the first system control instruction is used to control each of the secondary circuit water quality monitoring systems.

2. The method according to claim 1, characterized in that The sending the first system control instruction to the slave control subsystem includes: Parsing the first system control instruction to obtain a target subsystem identifier carried therein, and determining a target slave subsystem from the slave subsystems according to the target subsystem identifier and the candidate subsystem identifiers corresponding to the slave subsystems; The first system control instruction is sent to the target slave control subsystem.

3. The method according to claim 1, characterized in that The master control subsystem includes a master control module and a master control communication module, the master control module and the master control communication module are in communication connection with each other, and the master control communication module and the slave control subsystem are in communication connection with each other; The acquiring, by the master control subsystem, a first system control instruction issued by a user, and sending the first system control instruction to the slave control subsystem includes: Acquire the first system control instruction through the main control module, and send the first system control instruction to the main control communication module; The first system control instruction is sent to the slave control subsystem through the master control communication module.

4. The method according to claim 3, characterized in that The slave control subsystem includes a slave control module, a slave control communication module and an output module. The slave control module is respectively connected to the master control communication module and the slave control communication module. The slave control communication module is connected to the output module via a bus. The output module is connected to the associated secondary circuit water quality monitoring system. The sending of the first system control instruction to the respective associated secondary circuit water quality monitoring systems through the slave control subsystem includes: Acquire the first system control instruction sent by the master communication module through the slave control module, and send the first system control instruction to the slave communication module; Sending the first system control instruction to the output module through the slave control communication module; The first system control instruction is sent to the associated secondary circuit water quality monitoring system through the output module.

5. The method according to claim 4, characterized in that The slave control subsystem includes an input module, the input module is connected to the slave control communication module via a bus, and is in communication connection with the associated secondary circuit water quality monitoring system. The method further includes: collecting local equipment signals of the associated secondary circuit water quality monitoring system through the input module, and sending the local equipment signals to the slave control communication module; Sending the local device signal to the slave control module via the slave communication module; Sending the local device signal to the master communication module via the slave control module; The local device signal is sent to the main control module via the main control communication module, so that the main control module can visually display the local device signal.

6. The method according to claim 4, characterized in that The method further comprises: acquiring stored first system data through a first slave control module of a first slave control subsystem; wherein the first slave control subsystem is a slave control subsystem associated with a first-type secondary-circuit water quality monitoring system, and the first system data is system data of the first-type secondary-circuit water quality monitoring system, and the first-type secondary-circuit water quality monitoring system is a secondary-circuit dosing system and / or a secondary-circuit sampling system; sending the first system data to a first slave control communication module of a second slave control subsystem through the first slave control module, and sending the first system data to a second slave control module of the second slave control subsystem through the first slave control communication module; wherein the second slave control subsystem is a slave control subsystem associated with a second-type secondary-circuit water quality monitoring system, and the second-type secondary-circuit water quality monitoring system is a condensate polishing system; The second system data and the first system data are packaged by the second slave control module to generate packaged system data, and the packaged system data is sent to the master communication module; wherein the second system data is the system data of the second type of secondary circuit water quality monitoring system; The packaging system data is sent to the main control module through the main control communication module, so that the main control module monitors the packaging system data.

7. The method according to claim 4, characterized in that The slave control subsystem further includes a host computer module, the host computer module being communicatively connected to the slave control module, and the method further includes: Obtaining, through the host computer module, a target control source set by the user for the associated secondary circuit water quality monitoring system; wherein the target control source is the master control module or the slave control module; In the case where the target control source is the master control module, setting the module control state of the slave control module to the master control state through the host computer module; In a case where the target control source is the slave control module, the module control state of the slave control module is set to a slave control state through the host computer module.

8. The method according to claim 7, characterized in that The acquiring, by the slave control module, the first system control instruction sent by the master communication module includes: Determining the current control state of the module by the slave control module; When the module control state is the master control state, the first system control instruction sent by the master communication module is acquired through the slave control module.

9. The method according to claim 7, further comprising: Determining the current control state of the module by the slave control module; When the module control state is the slave control state, obtaining a second system control instruction issued by the user through the slave control module, and sending the second system control instruction to the slave communication module; Sending the second system control instruction to the output module through the slave control communication module; The second system control instruction is sent to the associated secondary circuit water quality monitoring system through the output module; wherein the slave second system control instruction is used to control the associated secondary circuit water quality monitoring system.

10. A control system, characterized in that: The control system includes a master control subsystem and at least one slave control subsystem, wherein the master control subsystem is in communication with the slave control subsystem; the slave control subsystems are in communication with their respective associated secondary circuit water quality monitoring systems, wherein: The master control subsystem is configured to obtain a first system control instruction issued by a user and send the first system control instruction to the slave control subsystem; The slave control subsystem is used to send the first system control instruction to the respective associated secondary circuit water quality monitoring system; wherein, the first system control instruction is used to control each of the secondary circuit water quality monitoring systems.

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