CN110444300A - The design method of nuclear power plant's Core cooling function control strategy based on sign - Google Patents
The design method of nuclear power plant's Core cooling function control strategy based on sign Download PDFInfo
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- CN110444300A CN110444300A CN201910598174.5A CN201910598174A CN110444300A CN 110444300 A CN110444300 A CN 110444300A CN 201910598174 A CN201910598174 A CN 201910598174A CN 110444300 A CN110444300 A CN 110444300A
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- 238000001816 cooling Methods 0.000 title claims abstract description 212
- 238000013461 design Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000011217 control strategy Methods 0.000 title claims abstract description 34
- 238000004458 analytical method Methods 0.000 claims abstract description 28
- 238000012512 characterization method Methods 0.000 claims abstract description 14
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- 238000011084 recovery Methods 0.000 abstract description 3
- 230000000116 mitigating effect Effects 0.000 description 6
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- 230000000694 effects Effects 0.000 description 5
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- 238000010200 validation analysis Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/001—Computer implemented control
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
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- 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
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- 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
- Y02E30/30—Nuclear fission reactors
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Abstract
The design method of the present invention relates to a kind of nuclear power plant's Core cooling function control strategy based on sign, Core cooling sign Analysis of Limit Value is carried out including (1), it determines the characterization insufficient instrument combine θ of Core cooling, obtains the limit value requirement of meter reading in Core cooling characterization sign instrument combine θ；(2) the accident inventory that Core cooling is challenged is determined；(3) the Core cooling mode for analyzing nuclear power plant, determines Core cooling mode collection Ω, is sorted according to the synthesis cooling capacity of Core cooling mode, determines optimal Core cooling mode sequence；(4) Core cooling mode sequence is verified and is adjusted；(5) the Core cooling function control strategy for the design of different technical characteristics nuclear power unit is obtained.The present invention can obtain optimal sign guiding key security functionality Core cooling deficiency recovery policy, preferably embody its advanced and safety according to different nuclear power unit design features.
Description
Technical field
The invention belongs to nuclear power plant design technology fields, and in particular to a kind of nuclear power plant's Core cooling function based on sign
The design method of control strategy.
Background technique
Design of nuclear power plant is complicated, is related to system and device category quantity is various, may cause the initial reason that accident occurs
Quantity is numerous and jumbled, if formulating it countermeasure respectively will lead to enormous amount.And sign is oriented to method malfunction protocol, by controlling thing
Therefore nuclear power plant's key security functionality impacted after occurring realizes the purpose of the gentle solution damage sequence of control, can effectively be located in
Complex working condition and superposition accident are managed, is the advanced Accident Handling Method being most widely used in the world.Sign is oriented to religious services or rituals therefore advises
Journey system increases the depth defense thickness of regulation, can more add for simple event is oriented to method malfunction protocol system
Kind guarantee power plant nuclear safety.The Core cooling function key security functionality one of important as nuclear power plant, control and recovery
Strategy is the important component that sign is oriented to method malfunction protocol, and whether design rationally directly influences sign guiding method accident
Regulation Core cooling is insufficient or loses under operating condition, the reasonability and rapidity of accident treatment.
Often there is biggish system design difference between nuclear power plant's difference heap-type, therefore different heap-type nuclear power plants need to be directed to
Respective design feature determines the Core cooling function control strategy for being suitable for its own design feature.On the other hand, even if it is right
For the different units of same heap-type, due to continuously improving for unit design, it is also possible to will cause system Design and Features
Variation, and then lead to the control of the Core cooling function of unit and alleviate to design to change, and then influence Core cooling control
The design of Policy Framework and design definite value.This is also needed the design feature for improving unit is combined to analyze its determining operation strategy, from
And accident can rapidly and accurately be handled by guaranteeing unit.Sign guiding accident directive/guide Core cooling function control strategy is related to nuclear power plant
A large amount of systems and equipment, each step of strategy are influenced each other and are associated with, and need to determine based on scientific and reasonable design method analysis.
Summary of the invention
The purpose of the present invention is to provide a kind of accident nuclear power plant key security functionality -- the Core cooling function based on sign
It can control the design method of strategy, to obtain optimal sign guiding key safety according to different nuclear power unit design features
Function Core cooling deficiency recovery policy preferably embodies its advanced and safety.
Technical scheme is as follows: a kind of design side of nuclear power plant's Core cooling function control strategy based on sign
Method includes the following steps:
(1) Core cooling sign Analysis of Limit Value is carried out, the characterization insufficient instrument combine θ of Core cooling is determined, obtains reactor core
The limit value requirement of meter reading in cooling characterization sign instrument combine θ；
(2) the accident inventory that Core cooling is challenged is determined；
(3) the Core cooling mode for analyzing nuclear power plant, determines Core cooling mode collection Ω, according to the comprehensive of Core cooling mode
Cooling capacity sequence is closed, determines optimal Core cooling mode sequence；
(4) accident conditions in the accident inventory that the Core cooling determined for step (2) is challenged, in step (3)
Determining Core cooling mode sequence is verified and is adjusted；
(5) final Core cooling function control strategy is determined.
Further, the design method of nuclear power plant's Core cooling function control strategy based on sign as described above, step
(1) in, according to design of nuclear power plant feature and the simulation of core physics and thermal-hydraulic calculates and experimental result, determines that Core cooling closes
Key sign characterization determines the instrument for characterizing these physical quantitys, and then really by occurring abnormal physical quantity when Core cooling deficiency
Surely the insufficient instrument combine θ of Core cooling is characterized.
Further, in step (1), the variation relation of parameter and meter reading is required by analysis unit safety criterion,
The collection of functions for establishing unit safety criterion calls parameter and meter reading is characterized in unit safety according to Core cooling vital signs
Limitation range in criterion obtains meter reading in Core cooling characterization sign instrument combine θ according to corresponding functional relation
Limit value requirement.
Further, the design method of nuclear power plant's Core cooling function control strategy based on sign as described above, step
(2) in, according to interested in statutory standard and nuclear safety department, require related accidents inventory pass through in conjunction with design of nuclear power plant
Safety analysis and associated analog to accident in all accident inventories calculate, and determine the thing that the unit challenges Core cooling
Therefore inventory, so that it is determined that the accident conditions of Core cooling analysis need to be carried out.
Further, the design method of nuclear power plant's Core cooling function control strategy based on sign as described above, step
(3) it in, is calculated by core physics and thermal-hydraulic simulation, each Core cooling mode is cold in analysis Core cooling mode collection Ω
But ability and the reliability of each Core cooling mode is analyzed, analyzes each Core cooling mode in Core cooling mode collection Ω
Subfunction ability and complete to quantify, normalized be specific value be used as subfunction merit rating number, based on nuclear power plant peace
Complete and economy objectives, determine the weight factor of each subfunction and complete normalized；In conjunction with the son of each Core cooling mode
Functional Capability review number and corresponding subfunction weight factor, quantization determine the comprehensive cooling energy for obtaining each Core cooling mode
Power sorts according to the synthesis cooling capacity of Core cooling mode, determines optimal Core cooling mode sequence.
Further, related Core cooling in each Core cooling mode also is determined by calculating analysis simultaneously in step (3)
Measure executes the setting valve requirement that should meet, so that the Core cooling based on the Core cooling mode can guarantee that Core cooling characterizes
Meter reading meets limit value requirement in sign instrument combine θ.
Further, the design method of nuclear power plant's Core cooling function control strategy based on sign as described above, step
(4) in, the verifying and adjustment mode are as follows:
(4-1) verifies whether single Core cooling mode meets meter reading limit value requirement, if being unsatisfactory for requiring, again
It according to unit design, is calculated in conjunction with reactor core Work condition analogue, return step (3) redefines Core cooling mode；
Whether the combination that (4-2) verifying Core cooling mode superimposition one of which Core cooling mode fails meets instrument
The requirement of meter reading limit value, again according to unit design, calculates, return step if being unsatisfactory for requiring in conjunction with reactor core Work condition analogue
(3) Core cooling mode is redefined；
(4-3) carries out people because of verifying, determines whether people meets the requirement of design criteria because of factor, if not satisfied, then basis
Verification result is modified, until meeting the requirements.
Beneficial effects of the present invention are as follows:
1, the present invention is suitable for the different heap-type including PWR nuclear power plant, is that the sign of different heap-type is oriented to religious services or rituals
Therefore the exploitation of Core cooling function mitigation strategy provides design method in regulation；
2, Core cooling function mitigation strategy designed according to this method can effectively cover nuclear power plant's malfunction protocol covering model
It encloses, it is ensured that be not in certain accident conditions without corresponding Core cooling function mitigation strategy；
3, first present invention firstly provides the relation function collection for establishing corresponding instrument and safety criterion based on Core cooling sign
It is secondary to propose Core cooling instrument limit value collection from the angle of overall operation, multidimensional letter is provided for operator monitor Core cooling
Breath reduces and people occurs because of the risk of error in judgement；
4, present invention firstly provides determine Core cooling side using subfunction weight factor and subfunction priority analysis
The method of the integration capability of formula, it is ensured that analyst coverage is comprehensive in the design of function mitigation strategy, and analysis conclusion can set for unit
Meter, which is further improved, provides reference；
5, Core cooling function mitigation strategy designed according to this method is provided in accident treatment most for operator
The good sequence of operation avoids operator in incident processing procedure due to thing caused by executing the lower alleviation sequence of reliability
Therefore processing delay.
Detailed description of the invention
Fig. 1 is that the present invention is based on the design method flow charts of nuclear power plant's Core cooling function control strategy of sign.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
Design of nuclear power plant is many and diverse, is related to a large amount of system and equipment, and the initial reason quantity of accident may occur very
It is huge.And sign guiding method is by controlling and alleviating control of the key security functionality realization to set state, therefore key safety
The control and alleviation of function are one of the characteristics of sign is oriented to method accident treatment code, and corresponding alleviation and control strategy are to core
Power Plant Accident treatment effect is most important.The Core cooling key function closely related as npp safety, control strategy
It is related to a large amount of system equipments of nuclear power plant and function, emphasis is needed to solve following problems in control strategy design process:
The accident conditions of Threat Reaction heap Core cooling safety are various, need to analyze these operating conditions, determine its by
The subfunction of influence and corresponding sign.The information for determining effectively monitoring Core cooling, determines unit safety criteria parameter and heap
The relationship of the cooling characterization meter reading of core, needs to find out suitable analysis method.
Nuclear power plant system complicated composition, system function is varied, and analysis, which determines, can be used for alleviating and to control reactor core cold
But unit safety function, including corresponding system and equipment obtain Core cooling mode collection.
Core cooling control strategy need to be considered every possible angle when formulating the cooling capacity of each Core cooling mode, safety level,
The many factors such as availability need to analyze system and equipment using method appropriate, comprehensive considering various effects, to ensure
Analyst coverage is comprehensive, determines the optimum controling strategy that Core cooling is used under accident.
The verification method to Core cooling control strategy need to be established, and verifies whether the strategy meets the requirements.
To solve the above problems, the invention proposes a kind of scientific and reasonable Core cooling function control strategy design sides
Method.It is calculated based on unit design and reactor core Work condition analogue, is analyzed by Core cooling sign and establish corresponding instrument and safety criterion
Relation function collection, determine Core cooling mode sequence by the comprehensive analysis unit Core cooling mode of weight, and pass through a system
Column verifying, obtains the Core cooling function control strategy for the design of different technical characteristics nuclear power unit.
Specific method process is as shown in Figure 1, include the following steps:
(1) Core cooling sign Analysis of Limit Value
According to design of nuclear power plant feature and the simulation of core physics and thermal-hydraulic calculates and experimental result, determines Core cooling
Vital signs characterize (such as hot spot factor Y), by occurring abnormal physical quantity (such as system temperature) when Core cooling deficiency,
It determines the instrument for characterizing these physical quantitys, and then determines the characterization insufficient instrument combine θ [a, b, c ...] of Core cooling.Analysis
The variation relation of unit safety criterion calls parameter (such as hot spot factor) and meter reading establishes unit safety criterion calls ginseng
Several collection of functions Y- { F with meter readingA(X), FB(X), FC(X)……}.Unit peace is characterized according to Core cooling vital signs
Instrument in Core cooling characterization sign instrument combine θ can be obtained according to corresponding functional relation in limitation range in full criterion
The limit value requirement of reading.
(2) the accident inventory that Core cooling is challenged is determined
According to interested in statutory standard and nuclear safety authorities, the related accidents inventory of requirement, in conjunction with design of nuclear power plant, lead to
It crosses to the safety analysis of accident in all accident inventories and associated analog calculating, it may be determined that the unit has challenge for Core cooling
Accident inventory.
(3) Core cooling functional sequence is analyzed
According to design of nuclear power plant, analyze the Core cooling mode of nuclear power plant, determine Core cooling mode collection Ω [A, B,
C……].By core physics and thermal-hydraulic simulation calculate, analyze Ω in each Core cooling mode cooling capacity and to each
The reliability of Core cooling mode is analyzed, including cooling effect, safety classification, redundancy, reliability, the sons such as functional localization
Function.It the subfunction ability of each Core cooling mode and completes to quantify in analysis Ω, to each subfunction of Core cooling mode
Ability carries out evaluation marking, and then normalized is specific value { A [x1, x2, x3 ...], B [y1, y2, y3 ...], C
[z1, z2, z3 ...] ... }, for example, x1, x2, x3 ... indicate the quantization of each subfunction ability of Core cooling mode A
Value.Based on power plant safety and economy objectives, determine the weight factor of each subfunction and complete normalized [P1, P2,
P3 ...] weight factor be based on npp safety and economy objectives, it is true according to functional requirement of the power plant to each subfunction
It is fixed.It may include safe weight factor and the economic snake factor, safe weight factor is to the function to the effect of accident mitigation
With the quantization of speed, the economic snake factor be to the influence and equipment used after the function to unit operation whether reusable
Etc. factors influence quantization.Subfunction merit rating number and corresponding subfunction weight factor in conjunction with each Core cooling mode
Afterwards, can quantify to determine the synthesis cooling capacity for obtaining each Core cooling mode.According to the synthesis cooling capacity of Core cooling mode
Sequence, determines optimal Core cooling mode sequence.Related reactor core in each Core cooling mode is determined by calculating analysis simultaneously
Cooling provision executes the setting valve requirement that should meet, so that the Core cooling based on which can guarantee that Core cooling characterizes sign
Meter reading meets limit value requirement in instrument combine θ.
(4) policy validation and adjustment
The Core cooling required based on unit safety analyzes operating condition inventory, verifies to determining Core cooling sequence.
Verifying includes following content:
Verify whether single Core cooling mode meets meter reading limit value requirement, if being unsatisfactory for requiring, basis again
Unit design, calculates in conjunction with reactor core Work condition analogue, and return step (3) redefines Core cooling mode.
Whether the combination that verifying Core cooling mode superimposition one of which Core cooling mode fails meets instrument reading
Number limit value requirement, again according to unit design, calculates if being unsatisfactory for requiring in conjunction with reactor core Work condition analogue, return step (3) weight
It is new to determine Core cooling mode.
Finally also need to carry out people because of verifying, determine the operating time, task distribution, operator's compatibility et al. because factor whether
Meet design criteria requirement, if not satisfied, then modifying according to verification result, until meeting the requirements.
(5) Core cooling function control strategy is determined
After the verifying for completing the advanced nuclear plant Core cooling control strategy based on sign, final Core cooling is formed
Function control strategy.
Embodiment
With LOCA, FLB for SGTR accident conditions, illustrates the specific embodiment of this method:
(1) Core cooling sign Analysis of Limit Value
According to the simulation calculated result of design of nuclear power plant feature and reactor core operating condition, the insufficient sign of Core cooling function is analyzed
Million, being occurred abnormal physical quantity when analysis Core cooling deficiency includes: that (correspond to instrument is parameter A- core exit temperature
Tco1, Tco2, Tco3), parameter B- main system hot pipe section temperature (Thl1, Thl2, Thl3), parameter C- pressure vessel liquid level
(Lv1, Lv2).It analyzes and determines that the variation relation collection of functions of Core cooling control target reactor core hot spot factor Y and meter reading are distinguished
For FA(Tco1, Tco2, Tco3), FB(Thl1, Thl2, Thl3), FC(Lv1, Lv2), this is techniques known.Y is in machine
Range in group safety criterion obtains the reading limits of corresponding instrument A according to the relation function of Y and meter reading for R
For RA, the reading limits of instrument B are RB, the reading limits of instrument C are RCIf the reading of Core cooling characterization instrument group
Number exceeds limit value, i.e. expression parameter Y has exceeded unit safety guidelines.
(2) the accident inventory that Core cooling is challenged is determined
According to interested in statutory standard and nuclear safety authorities, the related accidents inventory List-1 of requirement, set in conjunction with power plant
Meter obtains choosing Core cooling in List-1 by the safety analysis and associated analog calculating to accident in accident inventory
The accident of war has [LOCA, FLB, SGTR], that is, forms the accident inventory that power plant's Core cooling is challenged.
(3) Core cooling functional sequence is analyzed
According to design of nuclear power plant, the Core cooling mode for obtaining the power plant has: mode 1- emergency Core cooling, mode 2- steam
Send out device atmospheric steam exhaust+auxiliary feedwater, mode 3- residual heat removal system, determine Core cooling mode collection Ω be [mode 1, mode 2,
Mode 3].Calculated by reactor core Work condition analogue, analyze Ω in each Core cooling mode cooling capacity and to each Core cooling
The reliability of mode is analyzed, and the subfunction of consideration includes cooling effect, reliability, redundancy.It is cold that analysis obtains each reactor core
But the subfunction review number of mode be mode 1 [0.3,0.5,0.2], mode 2 [0.5,0.1,0.4], mode 3 [0.1,0.4,
0.5] }, the weight factor of each subfunction is [0.5,0.3,0.2], therefore the comprehensive cooling of each Core cooling mode is calculated
Ability is respectively [0.34,0.36,0.27], and calculation method is the subfunction quantized value of each Core cooling mode multiplied by corresponding
Then weight factor is added and obtains, it is thus determined that optimal Core cooling mode sequence is [mode 2, mode 1, mode 3] (this
Place is not actual numerical value, only use for example).It calculates analysis and determines that related Core cooling measure execution should meet whole in each mode
Definite value requirement, so that the Core cooling based on which can guarantee that determining meter reading meets limit value requirement in step (1).
(4) policy validation and adjustment
It is right under [LOCA, FLB, the SGTR] accident conditions in accident inventory challenged for Core cooling in step (2)
Determining Core cooling sequence is verified.
Verify single Core cooling mode, mode 1, mode 2 is listed in step (1) under [LOCA, FLB, SGTR] accident
Each meter reading can satisfy limit value requirement, and mode 3 is not able to satisfy limit value requirement, it is therefore desirable to be divided again according to power plant design
The Core cooling mode that determines is analysed, such as modification mode 3 is mode 3*- passive residual heat removal system or other means, until full
Foot requires.
Then whether full the Core cooling mode superimposition combination that wherein a certain Core cooling mode fails is verified
Foot requires.Verified Core cooling mode sequence stacked system 2 under LOCA accident fails, listed each instrument in step (1)
Reading is not able to satisfy its limit value requirement, it is therefore desirable to determining Core cooling mode sequence is reanalysed according to power plant design, such as
Modification mode 2 is mode 2*, until meeting the requirements.Finally obtain single Core cooling mode and Core cooling mode superimposition
The combination that certain Core cooling mode fails is all satisfied the Core cooling mode sequence [mode 1, mode 2*, mode 3*] of requirement.
People is finally carried out because of verifying, it is determined whether meet user demand, if being unsatisfactory for requiring according to the opinion of user into
Row modification, until meeting the requirements.
(5) Core cooling function control strategy is determined
After completing final policy validation, final Core cooling control strategy is formed.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of design method of nuclear power plant's Core cooling function control strategy based on sign, includes the following steps:
(1) Core cooling sign Analysis of Limit Value is carried out, the characterization insufficient instrument combine θ of Core cooling is determined, obtains Core cooling
Characterize the limit value requirement of meter reading in sign instrument combine θ；
(2) the accident inventory that Core cooling is challenged is determined；
(3) the Core cooling mode for analyzing nuclear power plant, determines Core cooling mode collection Ω, the synthesis according to Core cooling mode is cold
But ability sorts, and determines optimal Core cooling mode sequence；
(4) accident conditions in the accident inventory that the Core cooling determined for step (2) is challenged, determine in step (3)
Core cooling mode sequence verified and adjusted；
(5) final Core cooling function control strategy is determined.
2. the design method of nuclear power plant's Core cooling function control strategy based on sign as described in claim 1, feature
Be: in step (1), according to design of nuclear power plant feature and the simulation of core physics and thermal-hydraulic calculates and experimental result, determines
Core cooling vital signs characterization determines by occurring abnormal physical quantity when Core cooling deficiency and characterizes these physical quantitys
Instrument, and then determine the characterization insufficient instrument combine θ of Core cooling.
3. the design method of nuclear power plant's Core cooling function control strategy based on sign as claimed in claim 2, feature
It is: in step (1), the variation relation of parameter and meter reading is required by analysis unit safety criterion, establishes unit safety
The collection of functions of criterion calls parameter and meter reading is characterized in the limitation in unit safety criterion according to Core cooling vital signs
Range obtains the limit value requirement of meter reading in Core cooling characterization sign instrument combine θ according to corresponding functional relation.
4. the design method of nuclear power plant's Core cooling function control strategy based on sign as described in claim 1, feature
It is: in step (2), according to interested in statutory standard and nuclear safety department, the related accidents inventory of requirement, in conjunction with nuclear power plant
Design determines the unit for Core cooling by the safety analysis and associated analog calculating to accident in all accident inventories
The accident inventory challenged, so that it is determined that the accident conditions of Core cooling analysis need to be carried out.
5. the design method of nuclear power plant's Core cooling function control strategy based on sign as described in claim 1, feature
It is: in step (3), is calculated by core physics and thermal-hydraulic simulation, it is cold to analyze each reactor core in Core cooling mode collection Ω
But the cooling capacity of mode and the reliability of each Core cooling mode is analyzed, analyzes each heap in Core cooling mode collection Ω
The subfunction ability of the core type of cooling simultaneously is completed to quantify, and normalized is specific value as subfunction merit rating number, base
In npp safety and economy objectives, determines the weight factor of each subfunction and complete normalized；It is cold in conjunction with each reactor core
But the subfunction merit rating number of mode and corresponding subfunction weight factor, quantization determination obtain the comprehensive of each Core cooling mode
Cooling capacity is closed, is sorted according to the synthesis cooling capacity of Core cooling mode, determines optimal Core cooling mode sequence.
6. the design method of nuclear power plant's Core cooling function control strategy based on sign as claimed in claim 5, feature
It is: also determines that related Core cooling measure execution should expire in each Core cooling mode by calculating analysis simultaneously in step (3)
The setting valve requirement of foot, so that the Core cooling based on the Core cooling mode can guarantee that Core cooling characterizes sign instrument combine
Meter reading meets limit value requirement in θ.
7. the design method of nuclear power plant's Core cooling function control strategy based on sign as described in claim 1, feature
Be: in step (4), the verifying and adjustment mode are as follows:
(4-1) verifies whether single Core cooling mode meets meter reading limit value requirement, if being unsatisfactory for requiring, basis again
Unit design, calculates in conjunction with reactor core Work condition analogue, and return step (3) redefines Core cooling mode；
Whether the combination that (4-2) verifying Core cooling mode superimposition one of which Core cooling mode fails meets instrument reading
Number limit value requirement, again according to unit design, calculates if being unsatisfactory for requiring in conjunction with reactor core Work condition analogue, return step (3) weight
It is new to determine Core cooling mode；
(4-3) carries out people because of verifying, determines whether people meets the requirement of design criteria because of factor, if not satisfied, then according to verifying
As a result it modifies, until meeting the requirements.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111126755A (en) * | 2019-11-13 | 2020-05-08 | 中国核电工程有限公司 | Sign-based design method for recovery strategy of critical safety function of accident nuclear power plant |
| CN111627584A (en) * | 2020-04-30 | 2020-09-04 | 中国核电工程有限公司 | Method for selecting symptom guide function recovery accident guide rule confirmation working conditions of nuclear power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111627584B (en) * | 2020-04-30 | 2023-11-24 | 中国核电工程有限公司 | Nuclear power plant symptom guide function recovery accident guide rule confirmation working condition selection method |
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