CN102867556B - The fault handling method of nuclear power station DCS safety injection system Signal Fail and system - Google Patents
The fault handling method of nuclear power station DCS safety injection system Signal Fail and system Download PDFInfo
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- CN102867556B CN102867556B CN201110190953.5A CN201110190953A CN102867556B CN 102867556 B CN102867556 B CN 102867556B CN 201110190953 A CN201110190953 A CN 201110190953A CN 102867556 B CN102867556 B CN 102867556B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000002347 injection Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 title claims abstract description 40
- 238000004458 analytical method Methods 0.000 claims abstract description 36
- 238000010586 diagram Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims description 31
- 239000002826 coolant Substances 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000013459 approach Methods 0.000 abstract description 3
- 230000003449 preventive effect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 16
- 238000011058 failure modes and effects analysis Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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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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Abstract
The invention discloses a kind of fault handling method and system of nuclear power station DCS safety injection system Signal Fail, wherein method comprises step: determine the peace note signal instruction that safety injection system was lost efficacy; According to determined peace note signal instruction, obtain the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction; Determine according to topology diagram to pacify the hardware device noted signal instruction and relate to; Fault handling is carried out to hardware device.According to method of the present invention, can the various different approaches of decision-making system device fails and pattern, then suitable preventive measure are determined, thus reduce frequency that fault occurs and alleviate the consequence of fault, also for follow-up further Modling model, carry out fail-safe analysis, carry out the upstream input that available rate calculating etc. provides important.
Description
Technical field
The present invention relates to nuclear plant digital I&C system field, particularly relate to a kind of fault handling method and system of nuclear power station DCS safety injection system Signal Fail.
Background technology
Propose to carry out digitizing assessment to determine its security with a kind of ways and means to nuclear power station and general industry facility from the seventies in last century, to progressively introducing probabilistic safety assessment PSA (Probabilistic safety Assessment), fail-safe analysis is carried out to in-service nuclear power station, this evaluation method is generalized to the nuclear power station design phase gradually at present, in the hope of just understanding the potential safety hazard of nuclear power station and improved or eliminate at the beginning of design.And failure modes and effects analysis (FMEA:Failure Mode and Effect Analysis) is as the key link of fail-safe analysis work, its technical scheme implemented in concrete engineer applied will directly affect the follow-up reliable probability calculating carried out system equipment, function.In addition; along with digitizer Ore-controlling Role (DCS) is in the application of nuclear power station; become for the fail-safe analysis of DCS and FMEA technical scheme the focus that everybody pays close attention to, wherein safety injection system is as the important safety protection function of nuclear power station, needs the key object implementing FMEA especially.
Safety injection system, i.e. safety injection system, be made up of High-pressure injection system, middle pressure safety injection system and low head injection system.High-pressure safety injection and low pressure peace note are active injection subsystem, have enough equipment and runner redundance, even if there is single active or passive failure, still can ensure reliability and the continuous print Core cooling of security of operation.Middle pressure peace note is non-active injection subsystem, and it comprises two independent peace note case bleeder lines, and every bar is connected on an injection pipeline of reactor pressure vessel.When reactor coolant loop generation loss of-coolant accident (LOCA) or main steam system generation pipeline breaking accident, safety injection system completes reactor core and to meet an urgent need refrigerating function.But when DCS I &C equipment Signal Fail, peace pouring functions just can not correctly perform, and the failure modes and effects analysis therefore carried out DCS safety injection system seems particularly important.
Traditional analogue instrument is mostly adopted to control due to domestic at present at fortune nuclear power station, lack the basic data of a large amount of digitizer Ore-controlling Role operation aspect, and the fail-safe analysis work carried out for the nuclear plant digital I&C system of design phase is also at the early-stage in conceptual phase, therefore, still there is not the failure modes and effects analysis carried out for safety injection system, and the method for process.
Summary of the invention
The technical problem to be solved in the present invention is not form the defect of the safety injection system Signal Fail in digitizing I&C system being carried out to fault analysis and disposal route for prior art, provides a kind of fault handling method and system of nuclear power station DCS safety injection system Signal Fail.
The technical solution adopted for the present invention to solve the technical problems is:
The fault handling method of safety injection system Signal Fail in a kind of nuclear plant digital I&C system is provided, comprises step:
Determine the peace note signal instruction that safety injection system was lost efficacy;
According to determined peace note signal instruction, obtain the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction;
The hardware device that described peace note signal instruction relates to is determined according to described topology diagram;
Fault handling is carried out to described hardware device.
In fault handling method of the present invention, also comprise step:
Corresponding information table is generated according to fault mode and consequences analysis.
In fault handling method of the present invention, described peace note signal instruction comprises jet chimney flow height superposition jet chimney pressure low signal, the low low signal of steam flow height superposition cooling medium medial temperature, jet chimney differential pressure height signal, the low low signal of voltage stabilizer pressure and containment pressure height signal.
In fault handling method of the present invention, described hardware device comprises measurement instrument, Signal Pretreatment unit, data acquisition unit, output unit and communication fastener.
In fault handling method of the present invention, carry out fault handling to described hardware device to be specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviate, make up or avoid fault to carry out fault handling on the method that system security function affects to described hardware device.
Another technical scheme that the present invention solves the employing of its technical matters is:
The fault processing system of safety injection system Signal Fail in a kind of nuclear plant digital I&C system is provided, comprises:
The peace that lost efficacy note signal instruction determining unit, for determining the peace note signal instruction making safety injection system lose efficacy;
Topology diagram acquiring unit, for according to determined peace note signal instruction, obtains the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction;
Fault determining unit, for determining the hardware device that described peace note signal instruction relates to according to described topology diagram;
Processing unit, for carrying out fault handling to described hardware device.
In fault processing system of the present invention, this system also comprises:
Information table generation unit, for generating corresponding information table according to fault mode and consequences analysis.
In fault processing system of the present invention, described peace note signal instruction comprises jet chimney flow height superposition jet chimney pressure low signal, the low low signal of steam flow height superposition cooling medium medial temperature, jet chimney differential pressure height signal, the low low signal of voltage stabilizer pressure and containment pressure height signal.
In fault processing system of the present invention, described hardware device comprises measurement instrument, Signal Pretreatment unit, signal acquisition process unit, output unit and communication fastener.
In fault processing system of the present invention, described processing unit is specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviates, makes up or avoid fault to carry out fault handling on the method that system security function affects to described hardware device.
The beneficial effect that the present invention produces is: according to the peace making safety injection system the lose efficacy note signal instruction determined, obtain the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction, and determine further to pacify the hardware device noted signal instruction and relate to, thus fault handling is carried out to each hardware device, the Signal Fail forming safety injection system accordingly carries out the method for fault analysis, can the various different approaches of decision-making system device fails and pattern, then suitable preventive measure are determined, thus reduce the frequency that fault occurs and the consequence alleviating fault, also be follow-up further Modling model, carry out fail-safe analysis, carry out the upstream input that available rate calculating etc. provides important.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation one of the fault processing system of safety injection system Signal Fail in embodiment of the present invention nuclear plant digital I&C system;
Fig. 2 is the structural representation two of the fault processing system of safety injection system Signal Fail in embodiment of the present invention nuclear plant digital I&C system;
Fig. 3 is the logical organization sketch about peace note signal instruction in embodiment of the present invention nuclear plant digital I&C system;
Fig. 4 is the topology diagram about peace note signal instruction in embodiment of the present invention nuclear plant digital I&C system;
Fig. 5 is the process flow diagram of the fault handling method of safety injection system Signal Fail in embodiment of the present invention nuclear plant digital I&C system.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, in embodiment of the present invention nuclear plant digital I&C system, the fault processing system of safety injection system Signal Fail comprises: the peace that lost efficacy note signal instruction determining unit 10, topology diagram acquiring unit 20, fault determining unit 30 and processing unit 40.Wherein:
The peace that lost efficacy note signal instruction determining unit 10, for determining the peace note signal instruction making safety injection system lose efficacy, jet chimney flow height superposition jet chimney pressure low signal, the low low signal of steam flow height superposition cooling medium medial temperature, jet chimney differential pressure height signal, the low low signal of voltage stabilizer pressure and containment pressure height signal etc. can be comprised according to requirement of system design peace note signal instruction;
Topology diagram acquiring unit 20, pacify with inefficacy and note signal instruction determining unit 10 and be connected, for noting signal instruction according to the determined peace of inefficacy peace note signal instruction determining unit 10, obtain the digitizer Ore-controlling Role topology diagram performing this inefficacy peace note signal instruction, this topology diagram is drawn out according to the actuating logic of peace note signal instruction;
Fault determining unit 30, be connected with topology diagram acquiring unit 20, the hardware device that the peace note signal instruction that the topology diagram for obtaining according to topology diagram acquiring unit 20 is determined safety injection system was lost efficacy relates to and the redundant channel that basic structure adopts thereof and logical process mode; Namely to comprise in nuclear power station safety pouring functions implementation relevant various kinds of sensors measuring-signal, control command signal transmission etc. all measurement instruments gathering, distribute and apply in processing procedure, data acquisition, logical process and output unit, corresponding monitoring and service interface unit and special communication network unit, fastener, be connected and between the hardware device such as corresponding relation, and the redundant channel that adopts of its basic structure and logical process mode etc.The all part of nuclear power station all has Redundancy Design, A is generally divided into arrange and B row, the structure, control etc. of A row and B row are all identical, and in the embodiment of the present invention, in digitizer Ore-controlling Role, simultaneously the fault processing system of safety injection system Signal Fail designs for A row and B row.Hardware device comprises measurement instrument, Signal Pretreatment unit, data acquisition unit, output unit and communication fastener etc.
Processing unit 40, is connected with fault determining unit 30, for fault mode and consequences analysis, and carries out fault handling according to analysis result to hardware device.Processing unit 40 is specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviates, makes up or avoid fault to carry out fault handling to the method that system security function affects.
Further, this system also comprises information table generation unit 50, is connected with processing unit 40, for generating corresponding information table according to the fault mode of processing unit 40 and consequences analysis.Information table mainly comprises the title of analytic target, parts, function, fault mode, consequences analysis, mean repair time and detection method etc.The peace pouring functions that digitizer Ore-controlling Role performs progressively is decomposed refinement by this table, and by the function to concrete performance element and the analysis to its fault mode, determine its hardware device lost efficacy for peace pouring functions realize affect consequence, and by the detection method of such fault with judge that this fault mode and consequence are in acceptable scope or unacceptable for this system security function mean repair time further, and in order to judge the measure reducing and alleviate failure effect, to increase the reliability that peace pouring functions performs further.Affect the fault type of consequence for unacceptable its, downstream can it can be used as the key object carrying out safety and reliability Probability Analysis and Calculation further.
Because the process range of steam flow height superposition cooling medium medial temperature low triggering peace note this operating mode of signal in digital instrument Ore-controlling Role can contain other several operating mode, so the embodiment of the present invention specifically launches detailed failure mode and effect analysis, i.e. FMEA with " steam flow height superposition cooling medium medial temperature low triggering peace note signal ".
Determine be steam flow height superposition cooling medium medial temperature low triggering peace note Signal Fail after, obtain in digital I&C system according to the logical organization sketch (as shown in Figure 3) that this peace note signal performs the topology diagram (as shown in Figure 4) relating to this inefficacy peace note signal and perform.In Fig. 3, from the signal of steam flow sensor carry out between two logic get or after obtain three signals, these three signals get two logics through three again, as long as namely have two signals effective in three signals, then output signal is effectively; The signal of chiller temperature sensor carry out with the output signal after respective logic process of dedicated steam flow sensor after three get two logics logic phase with after, namely obtain the peace note signal SI of the low triggering of steam flow height superposition cooling medium medial temperature.The topology diagram of this peace note signal instruction is obtained according to logical organization sketch, as shown in Figure 4, comprise measurement instrument, Signal Pretreatment unit, signal acquisition process unit, output unit and communication fastener etc., wherein signal acquisition process unit comprises again data acquisition unit and signal logic processing unit, the all parts relating to this peace note signal instruction can be known according to this topological sketch, launching corresponding systemic-function failure modes and effects analysis for each part, mainly considering following factor when analyzing:
1) fault type of each concrete research object is analyzed;
2) reason producing these fault modes is analyzed;
3) impact on the spot produced under analyzing these single failure patterns and the impact on functional realiey;
4) method that can monitor the generation of this fault is analyzed;
5) judge whether this fault impacts the security performance of system;
6) to consider in the design how to adopt an effective measure the impact alleviating, make up or avoid certain class fault to cause system security function.
FMFA information table can be generated according to analysis result, as shown in table 1 below:
Table 1FMEA information table
In table 1, when the peace of the low triggering of steam flow height superposition cooling medium medial temperature notes Signal Fail, with reference to the topology diagram of Fig. 4, perform this peace note signal and relate to multiple unit, signal acquisition process unit comprises data acquisition unit and Logical processing unit, wherein data acquisition unit comprises again multiple analog signal input card, analog signal input card is mainly used in the low low signal of the steam flow of measurement height superposition cooling medium medial temperature to be input to signal acquisition process unit, steam flow sensor signal and cooling medium average temperature sensor signal obtain respectively by analog signal input card.When fault mode is low, the fault occurred when namely one of them is less than preset value by the analog signals that analog signal input card obtains, then system can detect voluntarily and automatically voting logic is downgraded to 2 and get 1; When nonsystematic detects automatically, carry out deviation ratio comparatively by operating personnel, find that fault mode is when being low, then voting logic is actual becomes 2 and gets 1, and performing voting logic is 3 get 2.When fault mode is high, namely one of them analog signals obtained by analog signal input card is higher than the fault occurred during preset value, then system can detect and voting logic is downgraded to 2 gets 1 automatically voluntarily; When nonsystematic detects automatically, carry out routine test by operating personnel, find that fault mode is when being high, voting logic is actual to be become 2 and gets 2, and performing voting logic is 3 get 2.According to table 1 can determine its hardware device lost efficacy for peace pouring functions realize affect consequence, and by the detection method of such fault with judge that this fault mode and consequence are in acceptable or unacceptable scope for this system security function mean repair time further, and in order to judge the measure reducing and alleviate failure effect, to increase the reliability that peace pouring functions performs further.Affect the fault type of consequence for unacceptable its, downstream can it can be used as the key object carrying out safety and reliability Probability Analysis and Calculation further.
The fault handling method of safety injection system Signal Fail in embodiment of the present invention nuclear plant digital I&C system, as shown in Figure 5, mainly comprises the following steps:
S1, fault processing system determine the peace note signal instruction that safety injection system was lost efficacy; Peace note signal instruction comprises jet chimney flow height superposition jet chimney pressure low signal, the low low signal of steam flow height superposition cooling medium medial temperature, jet chimney differential pressure height signal, the low low signal of voltage stabilizer pressure and containment pressure height signal.
S2, fault processing system, according to the peace note signal instruction making safety injection system lose efficacy, obtain the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction;
S3, fault processing system determine to pacify according to topology diagram the redundant channel and logical process mode that the note hardware device that relates to of signal instruction and basic structure thereof adopts; Wherein hardware device comprises measurement instrument, Signal Pretreatment unit, data acquisition unit, output unit and communication fastener.
S4, fault mode and consequences analysis are carried out to hardware device, and according to analysis result, hardware device is processed, be specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviate, make up or avoid fault to process hardware device the method that system security function affects.
Further, also step is comprised: fault processing system generates corresponding information table according to fault mode and consequences analysis.Information table mainly comprises the title of analytic target, parts, function, fault mode, consequences analysis, mean repair time and detection method etc.The peace pouring functions that digitizer Ore-controlling Role performs progressively is decomposed refinement by this table, can judge that this fault mode and consequence are in acceptable scope or unacceptable for this system security function according to this table, and in order to judge the measure reducing and alleviate failure effect, to increase the reliability that peace pouring functions performs further.Affect the fault type of consequence for unacceptable its, downstream can it can be used as the key object carrying out safety and reliability Probability Analysis and Calculation further.
The work of FMEA failure modes and effects analysis is the important prerequisite of carrying out nuclear power station fail-safe analysis work.For different nuclear power plant instrument Ore-controlling Role, the basic ideas of its analytical approach are consistent, but form functional requirement and the design variation of structure and safe instrument Ore-controlling Role for different digitizer Ore-controlling Role hardware, it may have different and different emphasis in analytic target, analytic process and degree of refinement etc. in specific implementation process.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (6)
1. the fault handling method of safety injection system Signal Fail in nuclear plant digital I&C system, is characterized in that, comprise step:
Determine the peace note signal instruction that safety injection system was lost efficacy;
According to determined peace note signal instruction, obtain the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction;
The hardware device that described peace note signal instruction relates to is determined according to described topology diagram;
Carry out fault mode and consequences analysis to described hardware device, and carry out fault handling according to analysis result to hardware device, wherein said consequences analysis comprises to be determined and performs voting logic;
Corresponding information table is generated according to fault mode and consequences analysis;
Wherein, topological structure comprises: two row of the passage of 4 redundancies and 2 redundancy each other, each passage comprises the corresponding measurement instrument connected successively, Signal Pretreatment unit, data acquisition unit, and often row comprise interconnective Logical processing unit and output unit; Each described data acquisition unit is connected to corresponding Logical processing unit by communication fastener.
2. fault handling method according to claim 1, it is characterized in that, described peace note signal instruction comprises jet chimney flow height superposition jet chimney pressure low signal, steam flow height superposition cooling medium medial temperature is low, jet chimney differential pressure is high, voltage stabilizer pressure is low and containment pressure is high.
3. fault handling method according to claim 1, it is characterized in that, fault mode and consequences analysis are carried out to described hardware device, and according to analysis result, fault handling is carried out on hardware device and be specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviate, make up or avoid fault to carry out fault handling on the method that system security function affects to described hardware device.
4. the fault processing system of safety injection system Signal Fail in nuclear plant digital I&C system, is characterized in that, comprising:
The peace that lost efficacy note signal instruction determining unit, for determining the peace note signal instruction making safety injection system lose efficacy;
Topology diagram acquiring unit, for according to determined peace note signal instruction, obtains the digitizer Ore-controlling Role topology diagram performing this peace note signal instruction;
Fault determining unit, for determining the hardware device that described peace note signal instruction relates to according to described topology diagram;
Processing unit, for carrying out fault mode and consequences analysis to described hardware device, and carries out fault handling according to analysis result to described hardware device, and wherein said consequences analysis comprises to be determined and performs voting logic;
Information table generation unit, for generating corresponding information table according to fault mode and consequences analysis;
Wherein, topological structure comprises: two row of the passage of 4 redundancies and 2 redundancy each other, each passage comprises the corresponding measurement instrument connected successively, Signal Pretreatment unit, data acquisition unit, and often row comprise interconnective Logical processing unit and output unit; Each described data acquisition unit is connected to corresponding Logical processing unit by communication fastener.
5. fault processing system according to claim 4, it is characterized in that, described peace note signal instruction comprises jet chimney flow height superposition jet chimney pressure low signal, the low low signal of steam flow height superposition cooling medium medial temperature, jet chimney differential pressure height signal, the low low signal of voltage stabilizer pressure and containment pressure height signal.
6. fault processing system according to claim 4, it is characterized in that, fault mode and consequences analysis are carried out to described hardware device, and according to analysis result, fault handling is carried out on described hardware device and be specially: the impact of the type broken down according to each hardware device, the reason producing fault mode and generation, detect the method broken down, and alleviate, make up or avoid fault to carry out fault handling on the method that system security function affects to described hardware device.
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| CN111061235B (en) * | 2019-12-20 | 2020-12-15 | 中核控制系统工程有限公司 | DCS equipment diagnosis method with fault early warning function |
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Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. |