CN100452244C - Method for realizing equipment safety monitoring utilizing transient statistic - Google Patents
Method for realizing equipment safety monitoring utilizing transient statistic Download PDFInfo
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- CN100452244C CN100452244C CNB2005100353216A CN200510035321A CN100452244C CN 100452244 C CN100452244 C CN 100452244C CN B2005100353216 A CNB2005100353216 A CN B2005100353216A CN 200510035321 A CN200510035321 A CN 200510035321A CN 100452244 C CN100452244 C CN 100452244C
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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
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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 present invention relates to a method for realizing equipment safety monitoring utilizing transient statistic. The equipment safety monitoring is realized by a computer. The method monitors equipment conditions in production in time by the steps of transient basic value determination, data collection, transient detection, transient classification, transient prompting, transient statistical result output, etc. Usual data collection comprises chained records of parameters, such as temperature, pressure, flow quantity, valve on-off signals, etc. The records are summarized together, which can accurately react an accurate state of each equipment in order to accurately judge the permitting condition of each equipment.
Description
Technical field
The present invention relates to the method for safety monitoring of equipment, say so exactly and utilize transient statistic to realize the method that device security is monitored, this method notifies the operation conditions of equipment at once, with the normal operation of service equipment by collection, analysis to device data.
Background technology
The integrality of nuclear power plant reactor one loop pressure-bearing boundary is the important assurance of nuclear power station nuclear safety, and corresponding bearing device is carried out the life-span supervision and control just seeming particularly important.Realize this target, just must exercise supervision, thereby prevent its strength failure and fatigure failure its stress state.
Adopt conventional method, promptly paste foil gauge and gather stress data on bearing device, reliability is not too high on the one hand, and it is impracticable on the other hand existing High Temperature High Pressure being had highly active reactor-loop again.And in the operational process of equipment, can be because a variety of causes causes transition (moment duty generation ANOMALOUS VARIATIONS), these transitions can cause equipment failure a bit, some is the sudden change of moment, can return to normal condition again very soon, can't have influence on the normal operation of equipment, if lump together, will certainly have influence on the normal operation of equipment, if do not monitor, also can cause unexpected unsafe factor, have influence on the operation and the safety of equipment and whole nuclear power station, therefore be a kind of highly effective apparatus monitoring method by transition monitoring, but also do not have nuclear power station to adopt this method at present above-mentioned equipment.
Summary of the invention
Based on this, the purpose of this invention is to provide a kind of method of utilizing transient statistic to realize device security is monitored, this method notifies the operation conditions of equipment at once, with the normal operation of service equipment by collection, analysis to device data.
Another object of the present invention provides a kind of transient statistic that utilizes and realizes that this method is especially carried out real-time data acquisition, analysis by computing machine to equipment to the method for device security monitoring, and forms operational report, the ruuning situation of watch-dog.
Thinking of the present invention is:
Practical experience according to the nuclear power station operation, analyze from the nuclear power plant reactor various operating modes that may occur in service, summarize some typical conditions from the angle that produces stress intensity, and, work out out the benchmark transition and provide the occurrence number that each benchmark transition must not surpass in the whole phase in longevity in the power station based on the frequency size that stress analysis and run duration to these typical conditions occur.
In operational process, transient changing (transition) at the reality generation, by analyzing temperature, the pressure and other parameters situation of change of being gathered, compare with the evolution characteristics of temperature, pressure and other parameters under the corresponding operating mode of benchmark transition, actual transition is classified as certain class benchmark transition following under conservative, the content to retain sovereignty over a part of the country full principle.Like this, in the phase in power station longevity,, so just can think that the bearing device of correspondence is in safe condition as long as actual transition is all contained by the benchmark transition and frequency is no more than the permission frequency of each benchmark transition respectively.Surpass the benchmark transition at actual transition content, or frequency surpasses the situation that the benchmark transition allows number of times, must be by the case individual processing: carry out actual stress analysis and analysis result fed back to the range of definition of benchmark transition and allow on the number of times, this second half that is operated in the phase in power station longevity can seem especially important.
Therefore, the present invention is achieved in that
A kind of method of utilizing transient statistic to realize device security is monitored is to utilize the monitoring of computer realization to device security, and this method may further comprise the steps:
A, determine the basic value of transition, set in advance the transition basic value of equipment, also cry basic transition according to equipment permission situation;
B, data acquisition: comprising the data of equipment and instrument are carried out information acquisition, mainly is that all controlled variable in nuclear power plant reactor loop are carried out data acquisition,
C, transient detection: to the various data of gathering, especially real-time physical parameter is carried out statistical study, and contrast has or not the situation that surpasses basic transition,
D, transition sort out: the situation that surpasses basic transition carried out transition sort out, determine its corresponding equipment and type, and judge aforesaid reality a situation arises whether can be contained by basic transition,
E, transition prompting: under the principle of safety, after transition sorted out, the above-mentioned reality situation that a situation arises surpasses basic transition is pointed out, and with this information stores,
F. export the transient statistic result: with above-mentioned information with and corresponding equipment gather, and form report output, handle for carrying out actual analysis and each case.
Described transition being sorted out, is that a situation arises divides according to the type of basic transition with reality, promptly its transition is classified as its most approaching basic transition type under the principle of safety.
Common data acquisition comprises temperature, pressure, flow, the isoparametric chained record of valve switch signal.These records are summarised in the accurate status that can react each equipment together exactly, so that accurately judge the permission situation of each equipment.
The value of basic transition is the transient statistics according to history, union goes out the actual basic transient that does not influence equipment operation that is taken place, this basic transition is as the actual contrast that a situation arises, and allow suitable error (also being threshold values) to exist, if exceed this error, then enter transition prompting step, the prompting monitor staff notes the operation conditions of equipment, and in time safeguards and keep in repair.
Above-mentioned threshold values comprises time threshold values and index threshold values, i.e. the threshold values of the concrete variation in plant parameters of expression such as temperature threshold values, pressure threshold value, flow threshold values.
Above-mentioned threshold values is provided with time threshold and index threshold values and constitutes threshold window; The monitoring actual curve do not surpass threshold window the time do not add up and be transition, surpassing then, statistics is transition.
After transition takes place, can determine the starting point and the terminal point of transition by mobile threshold window, then the starting point of transition and the parameter actual change curve between the terminal point are compared with design transition curve, when the curve of design transition can contain the parameter change curve of actual transition and is that all design the most approaching actual transition curve in transition curves, the transient statistic of reality generation is become this design transition.
For the transition of recurring, statistics is 2 transitions during the time phase difference overtime threshold values of first and second portion, and it is 1 transition that the mistiming was then added up during threshold values less than the time.
For the transition of discontinuous fluctuation, no matter whether the mistiming of its first, second portion is greater than the time threshold values, all by transient statistic independently.
When partial circulating (Sub-Cycle) takes place when, when the mistiming of first, second portion during the overtime threshold values statistics partial circulating be independently transition; Be not transition otherwise do not add up.
Described transition, its occurrence frequency and cumulative number are recorded into data in the lump, and compare with basic transition, if exceed the corresponding record of basic transition, then enter transition prompting step.
Described basic transition, it also is stored in the computing machine at the number of times that normal operation takes place, after the actual actual transition that takes place ranged basic transition, its frequency of computer monitoring was if the number of times that takes place is lower than the frequency of basic transition, determine that then equipment is for safe condition, if exceed the frequency of this basic transition, then send prompting, detect maintenance by the engineering staff, perhaps carry out case and judge, judge whether under safe condition.The frequency of basic transition is to determine according to the different ruuning situations of each equipment.
The described transient statistic that utilizes realizes that it is applied in the monitoring of nuclear power station to the method for device security monitoring, and transition can be divided into 4 classes when sorting out: 1 class is design conditions; 2 classes are general operating condition and middle events of equal probability (as the ascending, descending load); 3 classes are small probability event (as a loop minor break); 4 classes are minimum probability event (as a loop large break).
Described transition and basic transition, its data all are stored in the computing machine, and can read at any time, so that add up and check.
Described output transient statistic result, be that a situation arises gathers with transition, generate report automatically and propose, also can comprise warning to each office terminal, promptly carry out alarm, carry out each case analysis by each office terminal or supvr to surpassing predetermined transition.
The described method of utilizing transient statistic to realize device security is monitored, whether this method constantly will be carried out safety analysis in the transient statistic process, be in a safe condition with judgment device.As long as each benchmark transition accumulative total frequency is lower than permissible value, just can determines that bearing device is safe certainly, otherwise will carry out case analysis as the case may be, and adjust the benchmark transition and allow frequency according to the stress analysis result.Concrete analytical approach is the threshold values and the difference of basic transition and the number of times of transition generation of correlation data transition, if in the covering scope of basic transition, then think safe, if exceeded the covering scope of basic transition, then should be actual the threshold values that takes place of transition carry out each actual case with number of times and make a concrete analysis of, and the actual conditions of bonding apparatus determine whether it exists safety problem.
The present invention adopts above-mentioned method, timely watch-dog operation conditions aborning, especially under the situation that nuclear power plant equipment is not easy to monitor, adopt above-mentioned method, feasible monitoring intelligentization to equipment, and rapidly in time, be convenient to grasp the ruuning situation of all devices, carry out security control.
The result of long term monitoring can gather, and as the reference to the equipment operation monitoring, in time the hidden danger of discovering device can ensure the trouble-free operation of production system.
Description of drawings
The control flow chart that Fig. 1 realizes for the present invention,
Fig. 2 is the calculating chart of threshold values of the invention process,
Fig. 3 is the figure of employing threshold values zequin of the invention process and terminal point,
Fig. 4 is the judgement figure of a kind of continuous transition situation of the invention process,
Fig. 5 is the judgement figure of the continuous transition situation of another kind of the invention process,
Fig. 6 is the component-bar chart of fluctuation transition of the invention process,
Fig. 7 is the component-bar chart of partial circulating transition of the invention process.
Embodiment
At first, following enforcement of the present invention is to supervise according to the device security of nuclear power station to propose, and shown in Figure 1, performing step of the present invention is:
1 data acquisition
Under the control of computing machine, adopt the in-line meter system to 45 temperature of reactor-loop, pressure, flow, the isoparametric continuous recording of valve switch signal (this is recorded in 40 year phase in longevity interior realization continuous monitoring in power station), gather raw data, the raw data of gathering feeds back to computing machine and carries out record
2 transient detection
Then the physical parameter of gathering being analyzed, at first is to carry out transient detection: check that promptly the temperature and pressure parameter has or not the situation that defined threshold occurs surpassing, just explanation does not have transition to take place, and has just representative to have transition to take place, and must carry out analytic statistics.
Temperature and pressure change threshold commonly used
| Reactor cooling system (RCP) temperature variation: Δ T RCP＞5℃/3h |
| Chemistry and volume control system (RCV) temperature variation: Δ T RCV＞20℃/h |
| Waste heat guiding system (RRA) temperature variation: Δ T RRA＞20℃/h |
| Reactor cooling system (RCP) pressure changes: Δ P RCP＞10bar |
| Steam generator (SG) pressure changes: Δ P SG＞5bar |
Determine that with threshold value the method for transition sees Fig. 2.With the temperature analysis is example, among the figure: t
sBe time threshold (RCP is 3h, and other is 1h) that Ts is a temperature threshold.With t
sBe length, Ts is the high threshold window that constitutes; Do not add up transition when actual curve surpasses threshold window, surpass then statistics.
3 transitions are sorted out
It is exactly characteristics, operation and other supplementary that develops according to parameter that transition is sorted out, determine to belong to which kind of benchmark operating condition, and judge which benchmark transition can contain the evolutionary process of actual transition, classify as corresponding the most approaching benchmark transition following the actual transition that will take place under the complete principle content to retain sovereignty over a part of the country.So-called full principle content to retain sovereignty over a part of the country is exactly to guarantee that the parameter intensity of variation of actual transition necessarily can not be more serious than benchmark transition, and the stress influence that only in this way could guarantee actual transition is littler than benchmark transition.
Change the situation that can not contain by the benchmark transition in case the parameter of actual transition occurs, do not judge blindly, but need carry out case analysis, judge whether it works the mischief to equipment, and adjust the benchmark transition and allow frequency according to the stress analysis result.
And transition judged the standard of judgement has two, and the one, whether its transition threshold values surpasses basic transition, but whether the number of times that is taken place surpasses the frequency of basic transition.
After determining that transition takes place, can determine the starting point and the terminal point of transition by mobile threshold window, then the starting point of transition and the parameter actual change curve between the terminal point are compared with design transition curve, when the curve of design transition can contain the parameter change curve of actual transition and is that all design the most approaching actual transition curve in transition curves, the transient statistic of reality generation is become this design transition.Details are as follows:
Determine the actual change curve of transition
1) judgement of transition Origin And Destination is seen Fig. 3, t
0Be the starting point of transition, t
1Terminal point for transition.
2) Fig. 4 and Fig. 5 are seen in the differentiation of transition continuously.When actual curve variation tendency such as Fig. 4,1st part and 2nd partly differ above t
s2 transitions of Shi Tongji.T in Fig. 5
2-t
1＜t
s1 transition of Shi Tongji.
3) Fig. 6 is seen in the differentiation of fluctuation transition, no matter Δ t
1, Δ t
2Whether greater than t
s, all by independent transient statistic.
4) Fig. 7 is seen in the judgement of partial circulating (Sub-Cycle).As Δ T＞T
sThe Shi Tongji partial circulating is independent transition; As Δ T＜T
sThe time do not add up partial circulating, referring to Fig. 5.
The design transient code
Illustrate and see following form for details.Transition can be divided into 4 classes: 1 class is design conditions; 2 classes are general operating condition and middle events of equal probability (as the ascending, descending load); 3 classes are small probability event (as a loop minor break); 4 classes are minimum probability event (as a loop large break).
4 report filings
Because transient statistic work runs through the whole phase in longevity of nuclear power station, the report filing of therefore carrying out science is very important.The method that adopts is to generate daily paper, monthly magazine and annual report, and per year with the report filing that is generated, carries out unified file administration.Complete report filing system also for phase in the longevity potentiality analysis of carrying out bearing device after for many years provides may.
5 safety analyses
Constantly to carry out safety analysis in the transient statistic process, whether be in a safe condition with judgment device.As long as each benchmark transition accumulative total frequency is lower than permissible value, just can determines that bearing device is safe certainly, otherwise will carry out case analysis as the case may be, and adjust the benchmark transition and allow frequency according to the stress analysis result.
Monitoring of the present invention can be finished in computer system automatically, rather than finish by the complicate statistics analysis.Computing machine is existing technology, does not repeat them here.
The present invention adopts above-mentioned method, timely watch-dog operation conditions aborning, especially under the situation that nuclear power plant equipment is not easy to monitor, adopt above-mentioned method, feasible monitoring intelligentization to equipment, and rapidly in time, be convenient to grasp the ruuning situation of all devices, carry out security control.
And enforcement of the present invention not only is confined to the device security monitoring of nuclear power station, also can be applicable to the high industries of mechanical automation degree such as chemical industry, electronics.
Claims (10)
1, a kind of method of utilizing transient statistic to realize device security is monitored is to utilize the monitoring of computer realization to device security, it is characterized in that this method may further comprise the steps:
A, determine the basic value of transition, set in advance the transition basic value of equipment, also cry basic transition according to equipment permission situation;
B, data acquisition: comprise the data of equipment and instrument are carried out information acquisition,
C, transient detection: to the various data of gathering, real-time physical parameter is carried out statistical study, contrast has or not the situation that surpasses basic transition,
D, transition sort out: the situation that surpasses basic transition carried out transition sort out, determine its corresponding equipment and type, and judge aforesaid reality a situation arises whether can be contained by basic transition,
E, transition prompting: under the principle of safety, after transition sorted out, the above-mentioned reality situation that a situation arises surpasses basic transition is pointed out, and with this information stores,
F. export the transient statistic result: with above-mentioned information with and corresponding equipment gather, and form report output, handle for carrying out actual analysis and each case.
2, the method for utilizing transient statistic to realize device security is monitored as claimed in claim 1, the value that it is characterized in that basic transition is the transient statistics according to history, union goes out the actual basic transient that does not influence equipment operation that is taken place, this basic transition is as the actual contrast that a situation arises, and allow suitable threshold values to exist, if exceed this error, then enter transition prompting step, the prompting monitor staff notes the operation conditions of equipment, and in time safeguards and keep in repair.
3, the transient statistic that utilizes as claimed in claim 2 is realized the method for device security monitoring be is characterized in that above-mentioned threshold values, comprises time threshold values and index threshold values, i.e. the threshold values of temperature threshold values, pressure threshold value, the concrete variation in plant parameters of flow valve value representation.
4, the transient statistic that utilizes as claimed in claim 2 is realized the method for device security monitoring be is characterized in that above-mentioned threshold values, time threshold and index threshold values is set constitutes threshold window; The monitoring actual curve do not surpass threshold window the time do not add up and be transition, surpassing then, statistics is transition.
5, the method for utilizing transient statistic to realize device security is monitored as claimed in claim 4, after it is characterized in that transition takes place, determine the starting point and the terminal point of transition by mobile threshold window, then the starting point of transition and the parameter actual change curve between the terminal point are compared with design transition curve, when the curve of design transition can contain the parameter change curve of actual transition and is that all design the most approaching actual transition curve in transition curves, the transient statistic of reality generation is become this design transition.
6, the method for utilizing transient statistic to realize device security is monitored as claimed in claim 5, it is characterized in that for the transition of recurring, statistics is 2 transitions during the time phase difference overtime threshold values of the first of transition and the second portion of transition, and it is 1 transition that the mistiming was then added up during threshold values less than the time.
7, the transient statistic that utilizes as claimed in claim 5 is realized the method for device security monitoring be is characterized in that the transition for discontinuous fluctuation, no matter whether the mistiming of its first, second portion is greater than the time threshold values, all by transient statistic independently.
8, the method for utilizing transient statistic to realize device security is monitored as claimed in claim 5, it is characterized in that when partial circulating (Sub-Cycle) takes place, when the mistiming of first, second portion during the overtime threshold values statistics partial circulating be independently transition; Be not transition otherwise do not add up.
9, the method of utilizing transient statistic to realize device security is monitored as claimed in claim 1, it is characterized in that described basic transition, it also is stored in the computing machine at the number of times that normal operation takes place, after the actual actual transition that takes place ranges basic transition, its frequency of computer monitoring, if the number of times that takes place is lower than the frequency of basic transition, determine that then equipment is for safe condition, if exceed the frequency of this basic transition, then send prompting, detect maintenance, perhaps carry out case and judge by the engineering staff, judge whether that under safe condition the frequency of basic transition is to determine according to the different ruuning situations of each equipment.
10, the method for utilizing transient statistic to realize device security is monitored as claimed in claim 1, it is characterized in that described output transient statistic result, be that a situation arises gathers with transition, automatically generating report proposes to each office terminal, comprise warning, promptly carry out alarm, carry out each case analysis by each office terminal or supvr to surpassing predetermined transition.
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| CNB2005100353216A CN100452244C (en) | 2005-06-13 | 2005-06-13 | Method for realizing equipment safety monitoring utilizing transient statistic |
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| CN100452244C true CN100452244C (en) | 2009-01-14 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546612B (en) * | 2009-04-21 | 2011-08-24 | 中国原子能科学研究院 | Design transient determination method for sodium-cooled fast reactor nuclear power station coolant system and components |
| CN102005253B (en) * | 2009-09-01 | 2012-10-10 | 中广核工程有限公司 | Control system and control method for operation and allowance of console in main control room in nuclear power station |
| CN103886083A (en) * | 2014-03-26 | 2014-06-25 | 中广核工程有限公司 | Data processing method and system for transient state test of nuclear power unit |
| CN105184685B (en) * | 2015-10-13 | 2019-02-26 | 苏州热工研究院有限公司 | Usability evaluation method for the nuclear power design phase |
| CN108091409B (en) * | 2017-11-28 | 2019-09-27 | 大亚湾核电运营管理有限责任公司 | A kind of comprehensive estimation method of nuclear emergency set state diagnosis and damage sequence |
| CN110444301B (en) * | 2019-08-13 | 2022-07-01 | 中国核动力研究设计院 | Experimental device and experimental method for simulating supercritical pressure transient working condition |
| CN111564232B (en) * | 2020-04-26 | 2022-01-14 | 岭东核电有限公司 | Transient control method and device for RCV (remote control vehicle) system of nuclear power station |
| CN111967711A (en) * | 2020-07-07 | 2020-11-20 | 中国核电工程有限公司 | Method for determining unfavorable working conditions in containment related to accident strategy of pressurized water reactor nuclear power plant |
| CN111914219B (en) * | 2020-08-06 | 2023-06-02 | 苏州热工研究院有限公司 | Prediction method for transient occurrence times of nuclear power unit |
| CN113641156A (en) * | 2021-08-03 | 2021-11-12 | 上海核工程研究设计院有限公司 | Nuclear power plant operation transient state identification and evaluation system |
| CN113963822B (en) * | 2021-09-29 | 2024-04-30 | 深圳中广核工程设计有限公司 | Method and device for monitoring radioactivity abnormality of one-loop, storage medium and electronic equipment |
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| GB1522388A (en) * | 1974-12-24 | 1978-08-23 | Hochtemperatur Kernkraftwerk | Process for the operation of nuclear reactors |
| JPS61139797A (en) * | 1984-12-12 | 1986-06-27 | 株式会社東芝 | Closing device for isolating valve of main steam |
| CN1292554A (en) * | 1999-07-05 | 2001-04-25 | 法玛通公司 | Method for monitoring at least one running parameter of pile core of nuclear pile and its system |
-
2005
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1522388A (en) * | 1974-12-24 | 1978-08-23 | Hochtemperatur Kernkraftwerk | Process for the operation of nuclear reactors |
| JPS61139797A (en) * | 1984-12-12 | 1986-06-27 | 株式会社東芝 | Closing device for isolating valve of main steam |
| CN1292554A (en) * | 1999-07-05 | 2001-04-25 | 法玛通公司 | Method for monitoring at least one running parameter of pile core of nuclear pile and its system |
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Assignee: Guangdong Nuclear Power Joint Venture Co., Ltd Assignor: Dayawan Nuclear Power Running Management Co., Ltd. Contract fulfillment period: 2009.5.15 to 2014.5.15 contract change Contract record no.: 2009440000483 Denomination of invention: Method for realizing equipment safety monitoring utilizing transient statistic Granted publication date: 20090114 License type: Exclusive license Record date: 2009.6.22 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.15 TO 2014.5.15; CHANGE OF CONTRACT Name of requester: GUANGDONG NUCLEAR POWER JOINT VENTURING CO., LTD. Effective date: 20090622 |
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