CN-122000104-A - Nuclear reactor start sequence control method and device

CN122000104ACN 122000104 ACN122000104 ACN 122000104ACN-122000104-A

Abstract

The embodiment of the application provides a nuclear reactor starting sequence control method and device, and belongs to the technical field of nuclear power. The method comprises the steps of dividing a starting process of the nuclear reactor into a plurality of process stages, dividing equipment participating in the starting of the nuclear reactor into a plurality of functional groups according to control tasks of each process stage, determining starting logic and signal priority of equipment in each functional group, and controlling the starting of the equipment of the nuclear reactor according to the starting logic and the signal priority of each equipment in response to a starting instruction of the nuclear reactor. The embodiment of the application can solve the problem of low operation efficiency of the starting sequence control of the nuclear reactor in the prior art, and realize the high efficiency and the intellectualization of the starting sequence control of the nuclear reactor.

Inventors

FANG JIUCHUN
LI TAO
GUO YONGFEI
ZHANG RONGBIN
WU SICHENG
WANG HONGTAO
LANG YUKAI

Assignees

中广核研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (11)

1. A method for controlling a start-up sequence of a nuclear reactor, the method comprising: dividing a start-up procedure of a nuclear reactor into a plurality of process stages; dividing the equipment participating in the starting of the nuclear reactor into a plurality of functional groups according to the control task of each process stage; Determining the start logic and signal priority of the devices in each of the functional groups; And controlling the equipment of the nuclear reactor to start according to the starting logic and the signal priority of each equipment in response to the starting instruction of the nuclear reactor.
2. The method of claim 1, wherein the dividing the start-up process of the nuclear reactor into a plurality of process stages comprises: Acquiring a thermal hydraulic characteristic parameter of the nuclear reactor start; according to the thermal hydraulic characteristic parameters, the process stage is divided into a first stage of temperature rise and pressure rise, a stage of pressure rise and air building, a second stage of temperature rise after the air cavity is built, a critical process stage and a power operation stage.
3. The method according to claim 1, wherein said dividing the equipment involved in the start-up of the nuclear reactor into a plurality of functional groups according to the control tasks of each of said process stages comprises: For the control task of each process stage, dividing the plurality of devices into a plurality of functional groups according to at least one of device functions, device operation logic and connection relations among the plurality of devices related to the control task.
4. A method according to claim 3, wherein said dividing the plurality of devices into the plurality of function groups according to at least one of device functions, device operation logic, and connection relationships between the plurality of devices, which are related to the control task, comprises: Dividing the devices which bear the same or complementary functions in the control task into a functional group; and/or the number of the groups of groups, Dividing the devices which work cooperatively in the control task according to a preset operation sequence into a function group; and/or the number of the groups of groups, Devices directly connected or having a coupling relationship in a physical system or control loop of the nuclear reactor are divided into a functional group.
5. The method of claim 1, wherein said determining the start-up logic and signal priority of the devices within each of said functional groups comprises: setting starting logic for each function group according to the pre-execution condition of each function group; Establishing a signal priority for each of the devices; a control algorithm is set for each of the devices.
6. The method of claim 5, wherein the pre-execution conditions include a requirement for each device in the set of functions to be started, the requirement including that all pre-set tasks have been completed by all pre-set devices logically dependent on the device before the device is started, and that system parameters associated with the device are met.
7. The method of claim 6, wherein said setting start-up logic for each of said functional groups based on pre-execution conditions for each of said functional groups comprises: And setting starting logic for each functional group according to the pre-execution conditions, wherein the starting logic comprises starting the functional group if all devices in the functional group are in a normal state and system parameters of the nuclear reactor reach standards under the condition that a completion signal of a pre-functional group with a logic dependency relationship with the functional group is received.
8. The method of claim 5, wherein said establishing signal priority for each of said devices comprises: acquiring the safety control priority requirement of the nuclear reactor; And establishing the signal priority for each device according to the safety control priority requirements, wherein the signal priority comprises a nuclear safety protection signal in preference to a manual operation signal, the manual control signal in preference to an automatic sequence control signal, and the automatic sequence control signal is executed according to preset logic when no higher priority signal exists.
9. The method of claim 5, wherein said setting a control algorithm for each of said devices comprises: For each process stage and function group of the equipment, selecting a corresponding control algorithm from a preset control algorithm library to perform starting control, wherein the control algorithm library comprises an expert proportional-integral-derivative control algorithm; The execution logic of the expert proportional-integral-derivative control algorithm comprises: Acquiring current working condition information of the nuclear reactor; Obtaining deviation and deviation change rate of each operation parameter in the nuclear reactor according to the working condition information; matching parameter adjustment rules in a preset expert knowledge base according to the deviation of each operation parameter and the deviation change rate in the nuclear reactor; And dynamically adjusting parameters of the proportional-integral-derivative controller according to the parameter adjustment rule to obtain an adjusted optimized control instruction.
10. The method of claim 1, wherein controlling device start-up of the nuclear reactor based on start-up logic and signal priority of each of the devices comprises: Acquiring at least two functional groups based on the start logic and the signal priority, wherein all devices in each functional group have no logic dependence and no resource competition with all devices in other functional groups in the at least two functional groups; Performing parallel control on the function groups in the at least two function groups; and controlling the starting sequence of other functional groups except for the at least two functional groups in the functional groups according to the starting logic and the signal priority.
11. A nuclear reactor start-up sequence control apparatus, the apparatus comprising: A first dividing module for dividing a start-up procedure of a nuclear reactor into a plurality of process stages; the second dividing module is used for dividing equipment participating in the starting of the nuclear reactor into a plurality of functional groups according to the control task of each process stage; A determining module for determining the start logic and signal priority of the devices in each of the functional groups; And the control module is used for responding to the starting instruction of the nuclear reactor and controlling the starting of the equipment of the nuclear reactor according to the starting logic and the signal priority of each equipment.

Description

Nuclear reactor start sequence control method and device Technical Field The application relates to the technical field of nuclear power, in particular to a nuclear reactor starting sequence control method and device. Background Nuclear reactor startup is a complex system engineering for transitioning a nuclear power station from a cold shutdown state to power operation, and relates to cooperative coordination of multiple subsystems such as a primary loop system, a secondary loop system, a reactor body, a special safety facility and the like. The process has the technical characteristics of multivariable strong coupling, frequent working condition conversion and complicated operation sequence, key parameters such as coolant temperature, pressure, liquid level, neutron flux and the like are required to be accurately controlled in different stages, and meanwhile, the operation time sequences of tens of equipment such as a main pump, a control rod, a voltage stabilizer electric heater, a spray valve and the like are coordinated, so that strict requirements are put on the accuracy, reliability and efficiency of control. Currently, reactor start-up operations still rely to a large extent on operator manual control or simple automated systems based on fixed logic. The manual control mode has complicated and lengthy operation flow, highly depends on personnel experience and state, is easily influenced by factors such as fatigue, misjudgment and the like, causes operation delay and even misoperation, and forms potential threat to nuclear safety. Although the simple automation logic can partially replace manual work, a strict linear sequence execution mode is generally adopted, intelligent scheduling is not available among tasks, so that the starting period is overlong, and the operation efficiency is low. Disclosure of Invention The embodiment of the application mainly aims to provide a method and a device for controlling a nuclear reactor starting sequence, which aim to solve the problem of low operation efficiency of the nuclear reactor starting sequence control in the prior art and realize high efficiency and intellectualization of the nuclear reactor starting sequence control. To achieve the above object, a first aspect of an embodiment of the present application provides a method for controlling a start-up sequence of a nuclear reactor, the method comprising: dividing a start-up procedure of a nuclear reactor into a plurality of process stages; dividing the equipment participating in the starting of the nuclear reactor into a plurality of functional groups according to the control task of each process stage; Determining the start logic and signal priority of the devices in each of the functional groups; And controlling the equipment of the nuclear reactor to start according to the starting logic and the signal priority of each equipment in response to the starting instruction of the nuclear reactor. In some embodiments, the dividing the start-up process of the nuclear reactor into a plurality of process stages includes: Acquiring a thermal hydraulic characteristic parameter of the nuclear reactor start; according to the thermal hydraulic characteristic parameters, the process stage is divided into a first stage of temperature rise and pressure rise, a stage of pressure rise and air building, a second stage of temperature rise after the air cavity is built, a critical process stage and a power operation stage. In some embodiments, the apparatus to be involved in the start-up of the nuclear reactor is divided into a plurality of functional groups according to the control tasks of each of the process stages, comprising: For the control task of each process stage, dividing the plurality of devices into a plurality of functional groups according to at least one of device functions, device operation logic and connection relations among the plurality of devices related to the control task. In some embodiments, the dividing the plurality of devices into the plurality of function groups according to at least one of device functions, device operation logic, and connection relationships between the plurality of devices, which are related to the control task, includes: Dividing the devices which bear the same or complementary functions in the control task into a functional group; and/or the number of the groups of groups, Dividing the devices which work cooperatively in the control task according to a preset operation sequence into a function group; and/or the number of the groups of groups, Devices directly connected or having a coupling relationship in a physical system or control loop of the nuclear reactor are divided into a functional group. In some embodiments, said determining the start-up logic and signal priority of the devices within each of said functional groups comprises: setting starting logic for each function group according to the pre-execution condition of each function group; Establishing a signal prior