CN109712731A - A kind of nuclear power station diversity drive system and driving method - Google Patents
A kind of nuclear power station diversity drive system and driving method Download PDFInfo
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Abstract
The present invention provides a kind of nuclear power station diversity drive system and driving methods; reactor is protected for being realized with reactor protection system cooperation; including field instrument module, driving cabinet assembly and police instruction module; driving cabinet assembly includes the diversity driving cabinet for configuring by multiple row and being independently arranged; it includes: isolation module that diversity, which drives cabinet, is used for collection site instrument signal；Comparison process module, according to comparison result, generates protection signal for being compared the field instrument signal of acquisition with preset Protection parameters threshold value；Comparison process module is also used to receive other column protection signals in addition to this column, carries out logic voting to all column protection signals, executes corresponding protection act according to voting result and is connected to police instruction module, generates police instruction information.The system, which meets, examines that most stringent diversity drive system evaluates requirement, further improves the availability, reliability and safety of nuclear power plant.
Description
Technical field
The present invention relates to digital instrument control system of nuclear power plant fields, more particularly to one kind with reactor protection system for matching
It closes and realizes the nuclear power station diversity drive system protected to reactor and driving method.
Background technique
For the reactor protection system (RPS) for realizing reactor safety function, when design basis accident occurs
If Digital RPS is since common cause failure can not execute its key security functionality, the accident of will lead to develops into super design base
Quasi- accident and the safety for further endangering reactor.It is special " for the nuclear power plant using digitlization I&C system " in order to meet thus
Depth defense and the diversity requirements for not emphasizing nuclear power plant, in design, it is necessary to provide reply Digital RPSs altogether because losing
The diversity means of effect.Since diversified means are considered as one of reply software common cause failure most efficient method, various countries exist
All especially pay attention to coping with software common cause failure by diversified measure in designing and evaluating.However for nuclear power station diversity requirement
Specific implementation details, the evaluating of various countries requires not quite identical.
There are mainly two types of the existing technologies for realizing nuclear power station diversity system requirements: the first is by using a large amount of
Relay circuit requires to meet nuclear power station diversity, makes it when coping with Digital RPS disabler, passes through relay
Device logic still can operate the important equipment at scene.But there are the following problems: 1), for Digital RPS being total to
Because of failure, complete nuclear power station diversity driving measure is not formed；2), a large amount of safety level instrument and skilled hand behaviour increase standby
The scale of disk；3) it, is not implemented and outranges judgement, may cause mistake when judging unavailable due to outranging in nominal situation
The risk of triggering；4), due to using single-row realization, it is unable to satisfy single failure criteria, is unsatisfactory for European countries' Countries
Evaluate requirement；5), system uses the instrument shared with reactor protection system RPS, leads to not the diversity for realizing function,
KDS and reactor protection system RPS will fail simultaneously in the case that common cause failure occurs for instrument.Second is by using multiplicity
Change the equipment in Digital RPS to meet nuclear power station diversity requirement, occurs that it altogether because losing in Digital RPS
The consequence for alleviating accident when imitating and being superimposed design basis accident, maintains safe condition for power station.But there are the following problems:
1), due to using single-row realization, it is unable to satisfy single failure criteria, be unsatisfactory for European countries' Countries evaluates requirement；2),
It is not implemented and outranges judgement, may cause the risk of false triggering when judging unavailable due to outranging in nominal situation；
3), KDS is due to occurring the feelings of common cause failure in instrument using the diversity for the consistent instrument of RPS, leading to not realize function
KDS and RPS will fail simultaneously under condition；4), KDS system is realized using complex hardware technology, which is unsatisfactory for European countries
Countries evaluate requirement.
So a kind of new nuclear power station diversity drive system need to be sought, it can satisfy and examine most stringent Europe in the world
Continent country evaluates requirement for nuclear power station diversity drive system, further improve availability, the reliability of nuclear power plant with
And safety.
Summary of the invention
The present invention in view of the above technical problems, provides a kind of nuclear power station diversity drive system and driving method, solves
It is existing in the prior art to use single-row realization, it is unable to satisfy the requirement of single failure criteria, avoids may cause false triggering
The technical issues of risk.
The present invention is that a kind of nuclear power station diversity drive system is used for for solving the technical solution of the above technical problem
It is realized with reactor protection system cooperation and reactor is protected, the system comprises field instrument modules, driving stack of cabinets
Part and police instruction module, wherein the driving cabinet assembly includes the diversity drive for configuring by multiple row and being independently arranged
Motivation cabinet, each column diversity driving cabinet include:
Isolation module is connected to the instrument of the field instrument module, is used for collection site instrument signal；
Comparison process module connects the isolation module, and the field instrument signal for that will acquire and preset protection are joined
Number threshold value is compared, and according to comparison result, generates protection signal；
The comparison process module of each column is also used to receive the protection signal of other column in addition to this column, to all column
Protection signal carries out logic voting, executes corresponding protection act according to voting result and is connected to police instruction module,
Generate police instruction information.
Wherein, the comparison process module includes:
Memory module, for needing default Protection parameters threshold value according to nuclear reactor protection and storing；
Comparison module connects the isolation module, for transferring Protection parameters threshold value and based on the received field instrument letter
It number is compared, exports comparison result, generate protection signal, the protection signal is trip signal；
Logic processing module connects the comparison module, for receiving the jump of itself column and other column in addition to itself column
Lock signal, and logic voting is carried out to the trip signal of all column, automatic action signal is generated according to voting result；To shutdown or
Person drives ad hoc driving facility to execute corresponding protection act.
Wherein, the setting between the instrument A of the reactor protection system and the instrument B of diversity drive system uses function
Energy diversity is designed and is consistent, and protects for any type of instrument triggering diversity using instrument A and instrument B
Shield movement.
Wherein, the system also includes range decision logic module, be connected to isolation module and comparison process module it
Between, for judging whether instrument outranges, determined whether according to judging result for actual signal, to avoid in nominal situation,
Instrument leads to false triggering when outranging misjudgment.
Wherein, the upper and lower limit threshold value for outranging judgement being arranged in the range decision logic module is less than the reaction
Heap protects the upper and lower limit threshold value for outranging judgement of the middle setting of system.
Wherein, the driving cabinet assembly includes that 3 column diversity drive cabinet, and the voting logic in each column selects 2 using 3
Decision logic；
The system is realized using Electrical and Electronic element circuitry.
On the other hand, the present invention also provides a kind of nuclear power station diversity driving method, described method includes following steps:
Collection site instrument signal；
The field instrument signal of acquisition is compared with preset Protection parameters threshold value, according to comparison result, generates and protects
Protect action signal；Logic voting is carried out to all protection signals, executes corresponding protection act according to voting result；
Generate police instruction information.
Wherein, the field instrument signal by acquisition is compared with preset Protection parameters threshold value, is tied according to comparing
Fruit generates protection signal；Logic voting is carried out to all protection signals, executes corresponding guarantor according to voting result
Shield movement further comprises handling as follows:
Default Protection parameters threshold value is needed according to nuclear reactor protection and is stored；
It transfers Protection parameters threshold value and field instrument signal is compared based on the received, export comparison result, generate and protect
Action signal is protected, the protection signal is trip signal；
The trip signal of itself column and other column in addition to itself column is received, and logic is carried out to the trip signal of all column
Voting generates automatic action signal according to voting result；It is dynamic that corresponding protection is executed to shutdown or the ad hoc driving facility of driving
Make.
Wherein, the setting between the instrument A of the reactor protection system and the instrument B of diversity drive system uses function
Energy diversity is designed and is consistent, and protects for any type of instrument triggering diversity using instrument A and instrument B
Shield movement.
Wherein, the method also includes handling as follows, the instrument range is judged, is connected to isolation module and ratio
Compared between processing module, for judging whether instrument outranges, determined whether according to judging result for actual signal, to avoid
When nominal situation, instrument, which outranges, leads to false triggering when misjudgment: what is be arranged in the range decision logic outranges judgement
Upper and lower limit threshold value be less than the reactor protection system middle setting the upper and lower limit threshold value for outranging judgement.
Wherein, the driving cabinet assembly includes that 3 column diversity drive cabinet, no signal exchange logic between each column,
Voting logic in each column using 3 select 2 decision logic.
Technical solution provided in an embodiment of the present invention has the benefit that by establishing a kind of nuclear power station diversity drive
Dynamic system, efficiently solve it is existing in the prior art be unsatisfactory for European countries' Countries evaluate requirement, in nominal situation
In the case of may cause false triggering risk when judging unavailable due to outranging and in the case where instrument common cause failure KDS and
The technical issues of RPS will fail simultaneously.Nuclear power station diversity drive system proposed by the present invention and driving method meet single event
Hinder criterion, system using 3 column realize diversity logics, meet European countries' Countries it is the most harsh evaluate requirement；Nuclear power
Diversity of standing drives instrument used by logic and the instrument of RPS use effectively to be identified according to functional diversity, to avoid
The risk that both KDS and RPS function are lost simultaneously in the case where common cause failure occurs for instrument；Realization outranges judgement, avoids
It may cause the risk of false triggering when in nominal situation due to outranging misjudgment；The diversity of technology is carried out
Effectively identification, clearly uses electronics and electrical component technology, which meets that European countries' Countries are the most harsh to be evaluated
It is required that.The use of the technology further improves the availability, reliability and safety of nuclear power plant.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram for the nuclear power station diversity drive system that the embodiment of the present invention one provides；
Fig. 2 is another structural schematic diagram for the nuclear power station diversity drive system that the embodiment of the present invention one provides；
Fig. 3 is the concrete structure schematic diagram for the nuclear power station diversity drive system that the embodiment of the present invention one provides；
Fig. 4 is the structural schematic diagram of the instrumentation module for the nuclear power station diversity drive system that the embodiment of the present invention one provides；
Fig. 5 is the instrument for the nuclear power station diversity drive system with range judgment module that the embodiment of the present invention one provides
The structural schematic diagram of module；
Fig. 6 is that the instrument that the embodiment of the present invention one provides outranges judgement schematic diagram；
Fig. 7 is nuclear power station diversity driving method work flow diagram provided by Embodiment 2 of the present invention；
Fig. 8 is the nuclear power station diversity driving method specific implementation step of corresponding diagram 6；
Fig. 9 is diversity techniques schematic diagram.
Specific embodiment
For solve it is existing in the prior art be unsatisfactory for European countries' Countries evaluate requirement, in nominal situation situation
Under may cause false triggering risk when judging unavailable due to outranging and nuclear power station is more in the case where instrument common cause failure
The technical issues of sample drive system and reactor system will fail simultaneously.Nuclear power station diversity drive system proposed by the present invention
And driving method, in order to meet single failure criteria, system realizes diversity logic using multiple row, meets part state, European countries
Family is the most harsh to evaluate requirement；The instrument that diversity drives instrument used by logic and reactor system to use is according to function
Diversity is effectively identified, to avoid nuclear power station diversity drive system and reactor system in the case where instrument common cause failure
The risk that both systems function is lost simultaneously；Realization outranges judgement, avoids in nominal situation due to outranging judgement
It may cause the risk of false triggering when mistake；The diversity of technology is effectively identified, hardware simplicity technology is clearly used, it should
Technology meet European countries' Countries it is the most harsh evaluate requirement.Further improve availability, the reliability of nuclear power plant
And safety.Its core concept is: establishing a kind of nuclear power station diversity drive system, the party by providing a kind of design scheme
Method includes the acquisition of field instrument signal；The default and storage of Protection parameters threshold value；Logic voting is carried out to trip signal, according to
Voting result generates automatic action signal；The field instrument signal of acquisition is compared with preset Protection parameters threshold value, root
According to comparison result, protection signal is generated；Logic voting is carried out to all protection signals, is executed according to voting result
Corresponding protection act；Corresponding protection act is executed to shutdown or the ad hoc driving facility of driving.It is of the invention one of real
It applies in example and selects two logic judgment by using in 3 column three, instrument used by diversity driving logic and reactor system are adopted
Instrument is effectively identified that setting outranges decision logic according to functional diversity, which can sentence for outranging
Disconnected result is responded, and is avoided scene that malfunction occurs, is effectively identified for the diversity of technology, clearly using simple hard
Part technology.The design scheme meets examines most stringent European countries examining for nuclear power station diversity drive system in the world
Comment requirement.
In order to enable those skilled in the art that the present invention is more clearly understood, below in conjunction with attached drawing and specific implementation
Example does further detailed description to the present invention.
Embodiment one
Fig. 1 is the structural schematic diagram for the nuclear power station diversity drive system that the embodiment of the present invention one provides；As shown in Figure 1,
The present invention provides a kind of nuclear power station diversity drive systems, carry out for realizing with reactor protection system cooperation to reactor
Protection, system include field instrument module 200, driving cabinet assembly 100 and police instruction module 300, drive cabinet assembly
100, including being configured by multiple row and independently the diversity that is arranged drives cabinet, the diversity driving cabinet include: every
From module 110, it is connected to the instrument of the field instrument module 200, is used for collection site instrument signal；Comparison process module
120, the isolation module is connected, for the field instrument signal of acquisition to be compared with preset Protection parameters threshold value, root
According to comparison result, protection signal is generated；Comparison process module 120 is also used to receive the protection act of other column in addition to this column
Signal, and logic voting is carried out to the protection signal of all column, corresponding protection act is executed according to voting result.Its
In, voting logic using 3 select 2 decision logic.Police instruction module 300 connects comparison process module 120, for generating report
Alert instruction information reminding operator.
Fig. 2 is another structural schematic diagram for the nuclear power station diversity drive system that the embodiment of the present invention one provides, such as Fig. 2 institute
Show: system includes isolation module 110, comparison process module 120, field instrument module 200 and police instruction module 300.Its
In, field instrument module 200 includes button and switch 201 and sensor 202；Comparison process module 120 includes three column diversity
Cabinet comparison process module is driven, is diversity driving cabinet A comparison process module respectively, diversity driving cabinet B compares place
It manages module and diversity drives cabinet C comparison process module.Police instruction module 300 include alarm 301, parameter index 302,
Lamp 303.Button and switch 201 are used to respectively reach button and switching signal three column diversity driving cabinet；Sensor 202 is used
In acquisition data；Isolation module 110 is separately connected sensor 202, for the signal of receiving sensor 202, and to received letter
Isolation distribution number is carried out, output end is separately connected this column cabinet comparison process module and other two column driving cabinets compare place
Manage module.Diversity driving cabinet A comparison process module is separately connected field instrument module 200 and other two column signals, defeated
The executing agency that outlet output voting signal is arranged to A, and police instruction module 300 is outputed signal to, it forms instruction information and is used to
Prompting personnel；Diversity driving cabinet B comparison process module is separately connected field instrument module and other two column signals, exports
The executing agency that end output voting signal is arranged to B, and police instruction module 300 is outputed signal to, it forms instruction information and is used to mention
Wake up personnel；Diversity driving cabinet C comparison process module is separately connected field instrument module and other two column signals, output end
The executing agency that output voting signal is arranged to C, and police instruction module 300 is outputed signal to, it forms instruction information and is used to remind
Personnel；The diversity driving cabinet comparison process module of each column generates guarantor after carrying out threshold value comparison to these auto-action parameters
Action signal is protected, and 3 is carried out to protection signal, 2 voting logic is selected to handle, specifically, each diversity that is input to is driven
It the signal of motivation cabinet and sets Protection parameters threshold value and is compared, judge whether to generate protection signal, after comparison, when at least
When generating two protection signals, output auto-action signal goes shutdown or the ad hoc driving facility movement of driving.
The present invention designs nuclear power station diversity drive system, and it is necessary to meet following condition for general function requirement: in number
Change the consequence for alleviating accident when protection system occurs common cause failure and is superimposed design basis accident, power station is maintained into safety
State improves the availability, reliability and safety of nuclear power plant.
Attached drawing 3 is the concrete structure schematic diagram of another embodiment of nuclear power station diversity drive system of corresponding diagram 1；Referring to
Shown in Fig. 3, comparison process module 120 includes: memory module 121, for needing default Protection parameters according to nuclear reactor protection
Threshold value simultaneously stores；Comparison module 122 connects the isolation module, for transferring Protection parameters threshold value and based on the received scene
Instrument signal is compared, and exports comparison result, generates protection signal, and the protection signal is trip signal；It patrols
Processing module 123 is collected, the comparison module is connected, for receiving the trip signal of itself column and other column in addition to itself column,
And logic voting is carried out to the trip signal of all column, automatic action signal is generated according to voting result；To shutdown or driving
Ad hoc driving facility executes corresponding protection act.Wherein guarantee its independence without any signal exchange logic between the column and the column
Property.Diversity logic is realized using multiple row, meets single failure criteria and meets that European countries' Countries are the most harsh to be evaluated
It is required that.
Fig. 4 is the structural schematic diagram of the instrumentation module for the nuclear power station diversity drive system that the embodiment of the present invention one provides.
It is shown in Figure 4: the setting between the instrument A500 of the reactor protection system and the instrument B200 of diversity drive system
It is designed and is consistent using functional diversity, for any type of instrument using instrument A500 and instrument B200
Trigger Protection of Diversity movement.Isolation module 110 is connected to the instrument A500 and nuclear power station multiplicity of the reactor protection system
Property drive system instrument B200, be used for collection site instrument signal；Comparison process module 120 connects the isolation module
110, for the field instrument signal of acquisition to be compared with preset Protection parameters threshold value, according to comparison result, generates and protect
Protect action signal；It is more if protecting the diverse designs for considering function in the security function of reply design basis operating condition
Sensor device used by sample sexual function also meets design requirement, i.e., for same operating protection service system
It goes to trigger the protection act using two class instrument (such as cut operating condition, using pressure gauge or water level instrument).This
Instrument used by nuclear power station diversity drive system uses in the case of kind instrument and reactor protection system is consistent, i.e.,
Nuclear power station diversity drive system can trigger diversity using any type of instrument of A class instrument 500 or B class instrument 200
Protection act.If diversity is not present in the instrument that reactor protection system uses, i.e., protected for certain type of operating condition reactor
Protecting system only with type-A 500 trigger protection of instrument act, diversity driving just must using multifarious instrument B200 come
It triggers diversity and drives logic, to prevent a type of instrument since common cause failure causes the accident occurred that can not cope with
Risk.
Fig. 5 is the instrument for the nuclear power station diversity drive system with range judgment module that the embodiment of the present invention one provides
The structural schematic diagram of module, as shown in Figure 5: the instrument system further includes range decision logic module 700, is connected to isolation mode
Between block 110 and comparison process module 120, for judging whether instrument outranges, determine whether to be true according to judging result
Signal, to avoid in nominal situation, instrument leads to false triggering when outranging misjudgment.If nuclear power station diversity driving system
Signal collected instrument of uniting is not provided with the phenomenon that outranging judgement, outranging under the nominal situation of part in case of instrument will
System by default the instrument to outrange numerical value credible, carry out that scene is caused to malfunction.
Fig. 6 is that the instrument that the embodiment of the present invention one provides outranges judgement schematic diagram, as shown in Figure 6: the range judgement
The upper and lower limit threshold value for outranging judgement being arranged in logic module 700 is less than the super of the middle setting of the reactor protection system
The upper and lower limit threshold value of range judgement.If i.e. nuclear power station diversity drive system uses instrument identical with reactor protection system
Table (i.e. reactor protection system has used two class instrument to go to trigger the protection act for same operating protection service system,
Nuclear power station diversity drive system is using any in A/B type of meter), if relay protective scheme in reactor protection system
Belong to high level triggering, then the upper limit value that the instrument outranges judgement in nuclear power station diversity drive system need to be less than reactor protection
The upper limit value for outranging judgement of system；If relay protective scheme belongs to low value triggering in reactor protection system, nuclear power station is more
The lower limit value that the instrument outranges judgement in sample drive system need to be greater than the lower limit for outranging judgement of reactor protection system
Value.If there are diversity for the instrument that instrument and reactor protection system that nuclear power station diversity drive system uses use (instead
Answer heap protection system using type-A instrument, diversity drive system uses B type of meter), then nuclear power station diversity drive system
In the instrument outrange setting and need to be configured with reference to the characterisitic parameter of the instrument.
System realization outranges decision logic, can avoid in nominal situation due to possible when instrument outranges misjudgment
Lead to the risk of false triggering.
Embodiment two
Present invention implementation provides a kind of nuclear power station diversity driving method, and it is more to be suitable for nuclear power station shown in embodiment one
Sample drive system, in order to realize the structure of above-mentioned nuclear power station diversity drive system, Fig. 7 is provided by Embodiment 2 of the present invention
Nuclear power station diversity driving method work flow diagram, mainly includes the following steps:
S100, collection site signal；
S200, the field instrument signal of acquisition is compared with preset Protection parameters threshold value, it is raw according to comparison result
At protection signal；Logic voting is carried out to all protection signals, it is dynamic to execute corresponding protection according to voting result
Make；
S300, police instruction information is generated.
Referring to Fig. 8, step S200 further comprises following steps:
S210, default Protection parameters threshold value is needed according to nuclear reactor protection and is stored；
S220, instrument range is judged, for judging whether instrument outranges, according to judging result determine whether for
Actual signal；
S230, it transfers Protection parameters threshold value and field instrument signal is compared based on the received, exports comparison result, it is raw
At protection signal, the protection signal is trip signal；
S240, receive itself column and except itself column in addition to other column trip signal, and to the trip signal of all column into
The voting of row logic generates automatic action signal according to voting result；Shutdown or the ad hoc driving facility of driving are executed corresponding
Protection act.
Fig. 9 is diversity techniques schematic diagram, and according to IAEA laws and regulations requirement, existing international soft and hardware classification is detailed in Fig. 9 institute
Show.Electronic hardware technology is divided into conventional electrical and electronic component and large scale integrated circuit；Conventional electrical and electronic component point
For relay, Analogical Electronics and Digital Logical Circuits；Large scale integrated circuit includes programmable logic device, dedicated collection
At circuit and microprocessor；Programmable logic device be divided into simple programmable logical device, Complex Programmable Logic Devices and
FPGA；Simple programmable logical device is divided into programmable logic array and programmable logic array.Wherein according to different supervision
There are different requirements in authorities for the multifarious requirement.Programmable logic cells (complex hardware skill is approved by part regulatory authority
Art) and microprocessor between there are diversity；Part regulatory authority thinks to exist between two kinds of technologies between microprocessor more
Sample.What domestic three generations nuclear power plant used now is all complex hardware technology to realize diversity logic.As for world wide
Inside diversity the most harsh then require conventional electrical and electrical component (i.e. hardware simplicity technology) and large scale integrated circuit (and
Complex hardware technology and software technology) between diversity.This system uses diversity authentication requesting the most harsh thus, adopts
It is realized with conventional electrical and electronic component circuit engineering.The present invention is effectively identified that diversity is driven for the diversity of technology
Dynamic systematic comparison processing module 120 clearly uses conventional electrical and electronic component circuit engineering, which meets portion, European countries
Point country is the most harsh evaluates requirement.The use of the technology further improves the availability, reliability and peace of nuclear power plant
Quan Xing.
It should be understood that above-described embodiment provides system when driving method is realized, only with above-mentioned each functional module
It divides and carries out for example, can according to need by above-mentioned function distribution by different functional modules in practical application, i.e., will
The internal structure of equipment is divided into different functional modules, to complete all or part of the functions described above.In addition, above-mentioned
The system and method embodiment that embodiment provides belongs to same design, and specific implementation process is detailed in the description of embodiment of the method,
Which is not described herein again.
Above scheme of the present invention brings following technical effect: by establishing a kind of nuclear power station diversity drive system, effectively
It solves and is unsatisfactory for evaluating requirement, sentencing in nominal situation due to outranging for European countries' Countries in the prior art
It may cause false triggering risk when breaking unavailable and KDS and RPS will fail simultaneously in the case where common cause failure occurs for instrument
The technical issues of.Nuclear power station diversity drive system proposed by the present invention and driving method are adopted to meet single failure criteria
With 3 column realize diversity logics, meet European countries' Countries it is the most harsh evaluate requirement；Diversity driving logic is adopted
The instrument that instrument and RPS are used effectively is identified according to functional diversity, and common cause failure occurs to avoid in instrument
In the case of both KDS and RPS function simultaneously lose risk；Realization outranges judgement, avoid in nominal situation by
It may cause the risk of false triggering when outranging misjudgment；The diversity of technology is effectively identified, nuclear power station multiplicity
Property drive system clearly uses hardware simplicity technology, the technology meet European countries' Countries it is the most harsh evaluate requirement.
The use of the technology further improves the availability, reliability and safety of nuclear power plant.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of nuclear power station diversity drive system protects reactor for realizing with reactor protection system cooperation,
The system comprises field instrument module, driving cabinet assembly and police instruction modules, which is characterized in that the driving stack of cabinets
Part includes the diversity driving cabinet for configuring by multiple row and being independently arranged, and each column diversity driving cabinet wraps
It includes:
Isolation module is connected to the instrument of the field instrument module, is used for collection site instrument signal；
Comparison process module connects the isolation module, the field instrument signal for that will acquire and preset Protection parameters threshold
Value is compared, and according to comparison result, generates protection signal；
The comparison process module of each column is also used to receive the protection signal of other column in addition to this column, the protection to all column
Action signal carries out logic voting, executes corresponding protection act according to voting result and is connected to police instruction module, generates
Police instruction information.
2. system according to claim 1, which is characterized in that the comparison process module includes:
Memory module, for needing default Protection parameters threshold value according to nuclear reactor protection and storing；
Comparison module connects the isolation module, for transfer Protection parameters threshold value and based on the received field instrument signal into
Row compares, and exports comparison result, generates protection signal, and the protection signal is trip signal；
Logic processing module connects the comparison module, for receiving the tripping letter of itself column and other column in addition to itself column
Number, and logic voting is carried out to the trip signal of all column, automatic action signal is generated according to voting result；To shutdown or drive
It moves ad hoc driving facility and executes corresponding protection act.
3. system according to claim 1, which is characterized in that the instrument A and diversity of the reactor protection system drive
Setting between the instrument B of system is designed and is consistent using functional diversity, for using instrument A's and instrument B
Any type of instrument triggering Protection of Diversity movement.
4. system according to claim 3, which is characterized in that the system also includes: range decision logic module is connected to
Between isolation module and comparison process module, for judging whether instrument outranges, determine whether to be true according to judging result
Signal, to avoid in nominal situation, instrument leads to false triggering when outranging misjudgment.
5. system according to claim 4, which is characterized in that is be arranged in the range decision logic module outranges judgement
Upper and lower limit threshold value be less than the reactor protection system middle setting the upper and lower limit threshold value for outranging judgement.
6. system according to claim 1 or claim 2, which is characterized in that the driving cabinet assembly includes 3 column diversity driving machines
Cabinet, the voting logics of each column using 3 select 2 decision logic；
The system is realized using Electrical and Electronic element circuitry.
7. a kind of nuclear power station diversity driving method, which is characterized in that utilize system as described in claim 1, the method packet
Include following steps:
Collection site instrument signal；
The field instrument signal of acquisition is compared with preset Protection parameters threshold value, according to comparison result, it is dynamic to generate protection
Make signal；
Logic voting is carried out to all protection signals, executes corresponding protection act according to voting result；
Generate police instruction information.
8. method according to claim 7, which is characterized in that the field instrument signal by acquisition and preset protection are joined
Number threshold value is compared, and according to comparison result, generates protection signal；Logical table is carried out to all protection signals
Certainly, executing corresponding protection act according to voting result further comprises handling as follows:
Default Protection parameters threshold value is needed according to nuclear reactor protection and is stored；
It transfers Protection parameters threshold value and field instrument signal is compared based on the received, export comparison result, it is dynamic to generate protection
Make signal, the protection signal is trip signal；
The trip signal of itself column and other column in addition to itself column is received, and logical table is carried out to the trip signal of all column
Certainly, automatic action signal is generated according to voting result；Corresponding protection act is executed to shutdown or the ad hoc driving facility of driving.
9. according to the method described in claim 8, it is characterized in that, the instrument A of the reactor protection system and diversity are driven
Setting between the instrument B of dynamic system is designed and is consistent using functional diversity, for using instrument A and instrument B
Any type of instrument triggering Protection of Diversity movement.
10. according to the method described in claim 9, it is characterized in that, the method also includes handling as follows, to the instrument amount
Cheng Jinhang judgement, is connected between isolation module and comparison process module, for judging whether instrument outranges, is tied according to judgement
Fruit determines whether that for actual signal, to avoid in nominal situation, instrument leads to false triggering when outranging misjudgment: the amount
The upper and lower limit threshold value for outranging judgement being arranged in journey decision logic is less than the excess of the middle setting of the reactor protection system
The upper and lower limit threshold value of journey judgement.
11. method according to claim 10, which is characterized in that the driving cabinet assembly includes 3 column diversity driving machines
Cabinet, voting logic in each column using 3 select 2 decision logic.
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