CN113035403A - Automatic control method for nuclear power plant under abnormal working condition - Google Patents
Automatic control method for nuclear power plant under abnormal working condition Download PDFInfo
- Publication number
- CN113035403A CN113035403A CN202110229083.1A CN202110229083A CN113035403A CN 113035403 A CN113035403 A CN 113035403A CN 202110229083 A CN202110229083 A CN 202110229083A CN 113035403 A CN113035403 A CN 113035403A
- Authority
- CN
- China
- Prior art keywords
- power plant
- nuclear power
- automatic control
- utility
- control method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/001—Computer implemented control
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/008—Man-machine interface, e.g. control room layout
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/08—Regulation of any parameters in the plant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention aims to disclose an automatic control method under the abnormal working condition of a nuclear power plant, compared with the prior art, the method can fill the blank of the automatic control method of a power plant control system under the abnormal working condition of the power plant, and can reduce the workload of an operator; even if the selected control scheme is not used for directly controlling the power plant equipment, an operation proposal for maintaining the availability of the power plant can be provided for a power plant operator, and the aim of the invention is achieved.
Description
Technical Field
The invention relates to a control method of a nuclear power plant control system, in particular to an automatic control method under an abnormal working condition of a nuclear power plant.
Background
Due to the development of computers and control technologies, the monitoring, diagnosis and control levels of nuclear power plants are continuously improved, and the burden of operators is reduced; on the other hand, with the accumulation of experience of various normal and abnormal operation conditions of the nuclear power plant and the progress of nuclear power analysis technology, the development of various intellectual and intelligent operation regulations makes it possible to apply advanced control theory and technology.
At present, the automatic control of a nuclear power plant under an ideal working condition is very mature, most control functions are mainly based on the traditional PI & D control, or simple prediction and variable parameter PI & D control are realized, and manual intervention is rarely needed. However, when the equipment is degraded, wrong or other abnormal conditions occur, the automation degree is low, and the manual treatment is needed by the operator of the power plant.
Further refinement and optimization of the plant reliability database with the plant analysis model makes it possible to utilize these techniques to achieve a degree of automation.
Therefore, an automatic control method under abnormal conditions of a nuclear power plant is particularly needed to solve the existing problems.
Disclosure of Invention
The invention aims to provide an automatic control method under the abnormal working condition of a nuclear power plant, aiming at the defects of the prior art, the automatic control method can automatically control power plant equipment during the abnormal working condition and can be automatically adapted to the change of the environment and the running working condition.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
an automatic control method under abnormal working conditions of a nuclear power plant is characterized by comprising the following steps:
(1) when the nuclear power plant is in an abnormal working condition, acquiring nuclear power plant information, identifying a corresponding initial event, and inputting the initial event information into an event tree (PSA) evaluation model to obtain a feasible scheme for relieving the initial event;
(2) evaluating different feasible schemes selected by the probability safety evaluation method through a nuclear power plant analysis model to obtain the influence of each feasible scheme on key parameters of the nuclear power plant and selecting the feasible scheme with the minimum influence on the availability of the nuclear power plant;
(3) informing the operator of the action to be performed and requesting operator permission;
(4) and transmitting the driving signal to the required controlled equipment to complete automatic control.
In one embodiment of the invention, the nuclear power plant analysis model selects a utility theory to evaluate different feasible schemes, and the utility function is as follows:
wherein p isi: the success probability of the ith decision object; n: total number of utility variables; omegaj: a weight for each utility variable; u. ofi: x thjA utility function of the variable;
and after the selected feasible scheme is evaluated by the utility theory, the autonomous control system selects the corrective measure with the highest utility to execute.
Compared with the prior art, the automatic control method for the nuclear power plant under the abnormal working condition can fill the blank of the automatic control method for the power plant control system under the abnormal working condition of the power plant, and can reduce the workload of an operator; even if the selected control scheme is not used for directly controlling the power plant equipment, an operation proposal for maintaining the availability of the power plant can be provided for a power plant operator, and the aim of the invention is achieved.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
FIG. 1 is a schematic structural diagram of an automatic control method under abnormal conditions of a nuclear power plant according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Examples
As shown in fig. 1, according to the automatic control method under the abnormal operating condition of the nuclear power plant, when a certain abnormal operating condition occurs in the nuclear power plant, after an event initiating the abnormal operating condition of the nuclear power plant is determined, the event initiating information of the nuclear power plant is input into an event tree PSA evaluation model, so as to obtain a successful method for relieving the event initiating. In consideration of the fact that the shutdown function of the nuclear power plant is executed by a safety-level reactor protection system, the automatic control method under the abnormal working condition of the nuclear power plant only considers the measure of bringing the plant into the normal operation range, so that the availability of the nuclear power plant is ensured.
There may be a plurality of corrective actions given by the probabilistic security assessment method to mitigate the originating event, and the command ultimately executed by the control system may only be unique, so the corrective actions given by the probabilistic security assessment method need to be evaluated. But the feasibility of testing corrective actions one by one in a real plant by a control system is clearly impractical. Therefore, the automatic control method under the abnormal working condition of the nuclear power plant evaluates different correction measures selected by the probability safety evaluation method through a virtual nuclear power plant analysis model with high precision.
After the nuclear power plant corrective measures given by the probability safety assessment method are obtained, the influence of the nuclear power plant parameter changes adopting the corrective measures on the nuclear power plant availability needs to be considered. Therefore, the corrective measures are respectively input into the nuclear power plant analysis model for execution, and the influence of the corrective measures on the nuclear power plant is obtained, namely the influence of each corrective measure on the key parameters (such as power, core outlet temperature, pressure, average temperature and the like) of the nuclear power plant is concerned.
The automatic control method under the abnormal working condition of the nuclear power plant mainly considers the availability of the power plant rather than the safety, so the decision selection is better to maintain the operation of the nuclear power plant rather than shutting down the nuclear power plant. After the influence of different corrective measures on the nuclear power plant parameters is obtained, a scheme with the minimum influence on the nuclear power plant availability is selected, namely, the measure with the highest effect on the power generation availability is selected from the key nuclear power plant parameters. According to the automatic control method under the abnormal working condition of the nuclear power plant, the utility theory is selected to evaluate different correction measures. The utility function is:
wherein p isi: the success probability of the ith decision object; n: total number of utility variables; omegaj: a weight for each utility variable; u. ofi: x thjA utility function of the variable;
and after the selected correction measures are evaluated by the utility theory, the autonomous control system selects the correction measures with the highest utility to execute.
Finally, the operator is informed of the action to be performed and requests permission from the operator, transmitting a drive signal to the desired controlled device.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (2)
1. An automatic control method under abnormal working conditions of a nuclear power plant is characterized by comprising the following steps:
(1) when the nuclear power plant is in an abnormal working condition, acquiring nuclear power plant information, identifying a corresponding initial event, and inputting the initial event information into an event tree (PSA) evaluation model to obtain a feasible scheme for relieving the initial event;
(2) evaluating different feasible schemes selected by the probability safety evaluation method through a nuclear power plant analysis model to obtain the influence of each feasible scheme on key parameters of the nuclear power plant and selecting the feasible scheme with the minimum influence on the availability of the nuclear power plant;
(3) informing the operator of the action to be performed and requesting operator permission;
(4) and transmitting the driving signal to the required controlled equipment to complete automatic control.
2. The automatic control method of nuclear power plant under abnormal operating conditions of claim 1, wherein the nuclear power plant analysis model selects a utility theory to evaluate different feasible schemes, and the utility function is as follows:
wherein p isi: the success probability of the ith decision object; n: total number of utility variables; omegaj: a weight for each utility variable; u. ofi: x thjA utility function of the variable;
and after the selected feasible scheme is evaluated by the utility theory, the autonomous control system selects the corrective measure with the highest utility to execute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229083.1A CN113035403A (en) | 2021-03-02 | 2021-03-02 | Automatic control method for nuclear power plant under abnormal working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229083.1A CN113035403A (en) | 2021-03-02 | 2021-03-02 | Automatic control method for nuclear power plant under abnormal working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113035403A true CN113035403A (en) | 2021-06-25 |
Family
ID=76465430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110229083.1A Pending CN113035403A (en) | 2021-03-02 | 2021-03-02 | Automatic control method for nuclear power plant under abnormal working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113035403A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004875A (en) * | 2010-11-15 | 2011-04-06 | 河南电力试验研究院 | Risk assessment method and system based on utility theory |
| CN103246806A (en) * | 2013-04-25 | 2013-08-14 | 浙江大学 | Operation risk evaluation method comprising wind- power plant electric system |
| CN106683727A (en) * | 2016-12-21 | 2017-05-17 | 中国核电工程有限公司 | Fault monitoring method in accident handling |
| CN111354496A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Nuclear power plant accident online diagnosis and state tracking prediction method |
| CN111814337A (en) * | 2020-07-13 | 2020-10-23 | 上海核工程研究设计院有限公司 | Method for fire risk analysis of nuclear power plant compartment |
| CN111863296A (en) * | 2020-08-13 | 2020-10-30 | 中国核动力研究设计院 | Risk guidance-based simulation method and system for safety injection system of nuclear power plant |
-
2021
- 2021-03-02 CN CN202110229083.1A patent/CN113035403A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004875A (en) * | 2010-11-15 | 2011-04-06 | 河南电力试验研究院 | Risk assessment method and system based on utility theory |
| CN103246806A (en) * | 2013-04-25 | 2013-08-14 | 浙江大学 | Operation risk evaluation method comprising wind- power plant electric system |
| CN106683727A (en) * | 2016-12-21 | 2017-05-17 | 中国核电工程有限公司 | Fault monitoring method in accident handling |
| CN111354496A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Nuclear power plant accident online diagnosis and state tracking prediction method |
| CN111814337A (en) * | 2020-07-13 | 2020-10-23 | 上海核工程研究设计院有限公司 | Method for fire risk analysis of nuclear power plant compartment |
| CN111863296A (en) * | 2020-08-13 | 2020-10-30 | 中国核动力研究设计院 | Risk guidance-based simulation method and system for safety injection system of nuclear power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104992270B (en) | Power transmission and transformation equipment state overhauling aid decision-making system and method | |
| US20170032283A1 (en) | Machine learning unit, spindle replacement judging device, controller, machine tool, production system, and machine learning method, which are able to judge necessity of spindle replacement | |
| CN108052007B (en) | Thermal power generating unit operation optimization method, device and equipment and computer storage medium | |
| CN111581889B (en) | Fault prediction method, system and equipment for heat supply equipment component | |
| CN114065601A (en) | Management method of operation information of thermal power generating unit, storage medium and electronic device | |
| CN111090939B (en) | Early warning method and system for abnormal working condition of petrochemical device | |
| Albalawi et al. | Process operational safety via model predictive control: Recent results and future research directions | |
| US9188021B2 (en) | Steam turbine blade vibration monitor backpressure limiting system and method | |
| CN104809851A (en) | Key security parameter alarming method for chemical engineering devices | |
| CN113035403A (en) | Automatic control method for nuclear power plant under abnormal working condition | |
| US20060146973A1 (en) | Method and system for assessing failures of fuel rods | |
| CN116974234B (en) | Monitoring control method and system for thermal power plant carbon asset | |
| CN106683727B (en) | Fault monitoring method in accident processing | |
| Kubosawa et al. | Non-steady-state Control under Disturbances: Navigating Plant Operation via Simulation-Based Reinforcement Learning | |
| JPS6252601A (en) | Plant operation supporting system | |
| CN114386320A (en) | Steam turbine valve management method, device, equipment and storage medium | |
| CN117348605B (en) | Optimization method and system applied to control system of release film tearing machine | |
| CN113837535B (en) | Method for backtracking severe accident process of nuclear power plant | |
| Wang et al. | The control system assessment based on a class of disturbance characteristics | |
| CN117370872B (en) | Optimizing control method and device for power equipment | |
| KR20230111059A (en) | Reinforcement learning model learning method and rule-based nuclear power plant operation automation method using the same | |
| CN117826714A (en) | Unmanned thermal power plant control method and system | |
| Muhlheim et al. | A Risk-Informed Assessment of Operational Options for Successfully Avoiding a Trip Setpoint | |
| CN117028220A (en) | Optimized method and system for trip override control of million-unit peak shaving single water supply pump | |
| CN117720157A (en) | Monitoring method and system for industrial brine degassing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
|
| CB02 | Change of applicant information |