CN109085817A - The control method and system that nuclear power unit joint debugging stage CPU is filled down offline - Google Patents
The control method and system that nuclear power unit joint debugging stage CPU is filled down offline Download PDFInfo
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- CN109085817A CN109085817A CN201811147553.4A CN201811147553A CN109085817A CN 109085817 A CN109085817 A CN 109085817A CN 201811147553 A CN201811147553 A CN 201811147553A CN 109085817 A CN109085817 A CN 109085817A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention discloses the control methods that a kind of nuclear power unit joint debugging stage CPU is filled down offline, comprising: under hot shut-down condition, detects to which whether the CPU of the lower dress equipment influenced needs to be isolated；If it is not, then recording the original state of the cpu logic and the original state of interface signal that the CPU is influenced；Offline lower dress is carried out to the CPU；After completing offline lower dress, the CPU is restored to normal operating conditions, and the cpu logic and the interface signal are returned to original state.The invention also discloses the control systems that a kind of nuclear power unit joint debugging stage CPU is filled down offline.The present invention can directly carry out CPU lower dress offline in hot shut-down condition, do not influence the normal operation in other regions, improve unit safety.
Description
Technical field
The present invention relates to nuclear power station technical field more particularly to a kind of nuclear power unit joint debugging stage CPU lower controls filled offline
Method and system processed.
Background technique
Pressurized-water reactor nuclear power plant is mainly made of three parts such as pressurized water reactor, primary Ioops system and secondary coolant circuit system, pressure
Water-water reactor is coolant and moderator by fuel, light-water of low-enrichment uranium, and the heat that nuclear fission is released is by flowing through the primary Ioops in heap
The high pressure water of system takes out-pile out of and transfers heat to the water of secondary circuit in steamer generator.The steam generated after water is heated
Steam turbine is pushed, steam turbine then drives electrical power generators.
Pressurized-water reactor nuclear power plant known to one is the safety for meeting Redundant Control and requiring and increasing unit, is provided with four altogether
Subregion, electrical system, process system press function, and by equipment and control signal distributions in four subregions, four subregions are common
Safeguard the safe operation of nuclear power unit, and there are a large amount of signal interactions and equipment interlocking to control for four by stages.The nuclear power station
Allow subregion carry out conventional maintenance and it is offline it is lower fill work, safety level DCS (Distributed Control System,
Collective and distributive type control system) dress is divided under complete lower dress and increment and filling under control system, wherein complete lower dress, which refers to, fills all CPU under needs
(Central Processing Unit, center processing unit), dress refers to lower dress part CPU under increment.And joint debugging or unit
Startup stage is generally under increment and fills, and mainly has newly-increased signal, logic Modification, IO input and output modification etc., for newly-increased cabinet,
Cpu address modification, network fixed cycle are modified, the modification of service tree all lower need to fill not in this range.
In the prior art, when nuclear power unit is in hot shut-down condition, design problem is such as needed to carry out CPU lower dress offline, then
It needs to drop back unit and retreats to cold shutdown state progress failure cleaning.After fault clearance, then carry out this CPU impact equipment gradually
The operation of recovery is powered on, set state is then promoted to hot shut-down condition.But it drops back from hot shut-down condition to cold shut-down condition and mentions again
The state of liter needs to consume a lot of time and resources to hot shut-down condition, meanwhile, it is limited by the limit in primary Ioops design of pressure vessels service life
System, unit cannot be born too much from cold shutdown to the state change of hot shutdown.And under hot shut-down condition, under corresponding CPU is offline
Dress has that equipment overturning, logic variation, set point change may cause this subregion and other zone devices malfunctions.
Summary of the invention
The present invention aiming at the problems existing in the prior art, provides a kind of nuclear power unit joint debugging stage CPU lower dress offline
Control method and system, can directly carry out CPU lower dress offline in hot shut-down condition, not influence the normal operation in other regions,
Improve unit safety.
The technical solution that the present invention is proposed with regard to above-mentioned technical problem is as follows:
On the one hand, the present invention provides a kind of control method that nuclear power unit joint debugging stage CPU is filled down offline, comprising:
Under hot shut-down condition, detect to which whether the CPU of the lower dress equipment influenced needs to be isolated；
If it is not, then recording the original state of the cpu logic and the original state of interface signal that the CPU is influenced；
Offline lower dress is carried out to the CPU；
After completing offline lower dress, the CPU is restored to normal operating conditions, and by the cpu logic and described is connect
Message number returns to original state.
Further, whether the detection needs to be isolated to the CPU of the lower dress equipment influenced, specifically includes:
Whether the equipment that detecting the CPU input signal is influenced needs to be isolated；
If it is not, whether the equipment for then detecting the CPU hard-wired signals and being influenced needs to be isolated；
If it is not, then determining that the equipment that the CPU is influenced does not need to be isolated.
Further, whether the equipment that the detection CPU input signal is influenced needs to be isolated, and specifically includes:
Detect whether the CPU input signal failure can cause unit logic to degrade；
If it is not, the equipment for then determining that the CPU input signal is influenced does not need to be isolated.
Further, whether the equipment that the detection CPU hard-wired signals are influenced needs to be isolated, specific to wrap
It includes:
Detect whether the CPU hard-wired signals failure can trigger unit malfunction；
If it is not, the equipment for then determining that the CPU hard-wired signals are influenced does not need to be isolated.
Further, the original state of the cpu logic includes trigger original state in the cpu logic, setting
It is worth original state and parameter original state.
Further, the interface signal that the CPU is influenced includes the network signal that the CPU is influenced and hardwire letter
Number.
Further, described after completing offline lower dress, the CPU is restored to normal operating conditions, and by the CPU
Logic and the interface signal return to original state, and specifically include:
After completing offline lower dress, the CPU is restored to normal operating conditions；
It checks the state of presently described cpu logic, and the logic of state change is restored to original state；
It checks the state of presently described interface signal, and the interface signal of state change is restored to original state.
Further, the current state for checking the cpu logic, and the logic of state change is restored to initial shape
State specifically includes:
It checks the flip-flop states in presently described cpu logic, and is compared with the trigger original state of record；If
It is inconsistent, then the flip-flop states are restored to original state；
It checks the setting state of value in presently described cpu logic, and is compared with the setting value original state of record；If
It is inconsistent, then the setting state of value is restored to original state；
It checks the parameter state in presently described cpu logic, and is compared with the parameter original state of record；If different
It causes, then restores the parameter state to original state.
Further, the state for checking presently described interface signal, and by the interface signal of state change restore to
Original state specifically includes:
Check the state for the network signal that presently described CPU is influenced, and with the original state of the network signal of record into
Row comparison；If inconsistent, the state of the network signal is restored to original state；
Check the state for the hard-wired signals that presently described CPU is influenced, and the initial shape with the hard-wired signals of record
State compares；If inconsistent, the state of the hard-wired signals is restored to original state.
On the other hand, the present invention provides a kind of control system that nuclear power unit joint debugging stage CPU is filled down offline, can be realized
All processes for the control method that above-mentioned nuclear power unit joint debugging stage CPU is filled down offline, the system comprises:
Detection module, under hot shut-down condition, detecting to which whether the CPU of the lower dress equipment influenced needs to be isolated；
Logging modle when the equipment for being influenced in the CPU does not need to be isolated, records the first of the cpu logic
The original state for the interface signal that beginning state and the CPU are influenced；
Under die-filling piece, for carrying out offline lower dress to the CPU；
The CPU is restored to normal operating conditions for after completing offline lower dress by recovery module, and by the CPU
Logic and the interface signal return to original state.
Technical solution provided in an embodiment of the present invention has the benefit that
Under needing to carry out design alteration CPU under nuclear power unit heat shut-down condition offline when dress, the CPU to lower dress is first detected
Whether the equipment influenced, which needs, is isolated, if recording the initial of the interface signal that cpu logic and CPU are influenced without isolation
State, and the state recorded is gradually restored after the completion of lower dress, it realizes and directly carries out offline lower dress in hot shut-down condition,
Without not impacting in this CPU impact equipment and other trizonal normal operations to other, stablize nuclear power unit
Hot shut-down condition effectively improves lower dress efficiency, saves unit resource, and improve the safety of unit.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the process for the control method that the nuclear power unit joint debugging stage CPU that the embodiment of the present invention one provides is filled down offline
Schematic diagram；
Fig. 2 is the structure for the control system that nuclear power unit joint debugging stage CPU provided by Embodiment 2 of the present invention is filled down offline
Schematic diagram.
Specific embodiment
In order to solve during the prior art is filled at CPU it is existing consume a lot of time and resources and reduce unit pacify
The technical problems such as full property, the present invention is intended to provide the control method that a kind of nuclear power unit joint debugging stage CPU is filled down offline, core
Thought is: under needing to carry out design alteration CPU under nuclear power unit heat shut-down condition offline when dress, first detecting the CPU to lower dress
Whether the equipment influenced, which needs, is isolated, if recording the initial of the interface signal that cpu logic and CPU are influenced without isolation
State, and the state recorded is gradually restored after the completion of lower dress, it realizes and directly carries out offline lower dress in hot shut-down condition,
Without not impacting in this CPU impact equipment and other trizonal normal operations to other, stablize nuclear power unit
Hot shut-down condition effectively improves lower dress efficiency, saves unit resource, and improve the safety of unit.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Referring to Fig. 1, the embodiment of the invention provides a kind of nuclear power unit joint debugging stage CPU to descend the control method filled offline,
This method comprises:
S1, under hot shut-down condition, detect to which whether the equipment that is influenced of CPU of lower dress needs to be isolated；
S2, if it is not, then recording the original state of the cpu logic and the initial shape of interface signal that the CPU is influenced
State；
S3, offline lower dress is carried out to the CPU；
S4, after completing offline lower dress, the CPU is restored to normal operating conditions, and by the cpu logic and described
Interface signal returns to original state.
It should be noted that nuclear power unit is stable always in hot shut-down condition during CPU lower dress offline.To certain
Whether before particular CPU carries out offline lower dress, first detecting the equipment that the CPU is influenced needs to be isolated, so that the offline lower dress of CPU is not
Meeting driving equipment malfunction, the equipment influenced by the CPU known to detection is without isolation.In addition the initial shape of cpu logic is recorded
The original state for the interface signal that state and CPU are influenced avoids state after lower dress from changing.In the case where completing CPU offline after dress,
After checking that corresponding work station CPU is working properly, the state generaI investigation for the interface signal that the state and CPU for carrying out cpu logic are influenced,
Its state is restored to original state.The present embodiment directly carries out CPU lower dress offline in hot shut-down condition, without to other not by this
The equipment of CPU impact and other trizonal normal operations impact the safety for improving unit.In addition, the present embodiment exists
CPU is stable always during lower dress offline to improve lower dress effect without the conversion back and forth of hot shut-down condition and cold shut-down condition in hot shut-down condition
Rate saves unit resource, and extends unit service life.
Further, in step sl, whether the detection needs to be isolated to the CPU of the lower dress equipment influenced, has
Body includes:
Whether the equipment that detecting the CPU input signal is influenced needs to be isolated；
If it is not, whether the equipment for then detecting the CPU hard-wired signals and being influenced needs to be isolated；
If it is not, then determining that the equipment that the CPU is influenced does not need to be isolated.
It should be noted that the equipment that CPU is influenced generally comprises the equipment that CPU input signal is influenced and CPU connects firmly
The equipment that line signal is influenced.First CPU input signal is analyzed, then the output of CPU hard-wired signals is analyzed, if inspection
It measures the equipment that CPU input signal is influenced and when the equipment that CPU hard-wired signals are influenced does not need to be isolated, determines
The equipment that CPU is influenced does not need to be isolated.
Specifically, whether the equipment that the detection CPU input signal is influenced needs to be isolated, and specifically includes:
Detect whether the CPU input signal failure can cause unit logic to degrade；
If it is not, the equipment for then determining that the CPU input signal is influenced does not need to be isolated.
It should be noted that the failure of CPU input signal can be brought during filling under CPU, therefore need to analyze under CPU during dress
Unit logic caused by bring input signal fails degrades, and is with a subregion APU0 (safety level DCS analog quantity processing unit)
Example, as shown in table 1, is analyzed, wherein for example equipment is anti-by summarizing input signal, and to the degradation situation of input signal
Feedback DCL1439JC1 is the band load function of influencing the diesel engine after corresponding subregion power loss, but corresponding signal has in other CPU
Redundancy setting, the band that will not influence diesel engine carry function；Corresponding KRT radiation monitoring system signal, according to logic this signal under
Outbound logic is to alarm with logical triggering, and the lower dress of an APU can't trigger alarm and generate unit I0；For RPR9301/2/
3CC, which is used only for PS maintenance function not, influences unit safety function, and by above-mentioned analysis, a subregion APU0 offline believe by lower dress input
It number does not have any impact to unit.Therefore, the equipment for determining that CPU input signal is influenced does not need to be isolated.
Table 1
Specifically, whether the equipment that the detection CPU hard-wired signals are influenced needs to be isolated, and specifically includes:
Detect whether the CPU hard-wired signals failure can trigger unit malfunction；
If it is not, the equipment for then determining that the CPU hard-wired signals are influenced does not need to be isolated.
It should be noted that by taking (safety level DCS Logical processing unit) ALU A1-1&1-2 of a subregion as an example, such as table 2
It is shown, according to table analysis, wherein jumping heap logic according to typical wiring TH02-01 it is found that ALU A1-X and ALU A2-X logic is
Or relationship, filling ALU A1-1&1-2 below not will lead to the breaker opening of corresponding subregion and triggers and think unit I0 event；
And for ad hoc logic, all it is or relationship according to all ad hoc logics, does not will cause this point to ALU A1-1&1-2 is filled below
The ad hoc logic in area is unavailable and records unit I0 event.And for ST70/80/02 correlation for platform maintenance function, only
Being only used for PS maintenance function not influences unit safety function, by above-mentioned analysis, fills under a subregion ALU A1-1&1-2 is offline defeated
Signal does not have any impact to unit out.Therefore, the equipment for determining that CPU hard-wired signals are influenced does not need to be isolated.
Table 2
Further, in step s 2, at the beginning of the original state of the cpu logic includes the trigger in the cpu logic
Beginning state, setting value original state and parameter original state；The interface signal that the CPU is influenced includes that the CPU is influenced
Network signal and hard-wired signals.
It is further, in step s 4, described that the CPU is restored to normal operating conditions after completing offline lower dress,
And return to original state the cpu logic and the interface signal, it specifically includes:
After completing offline lower dress, the CPU is restored to normal operating conditions；
It checks the state of presently described cpu logic, and the logic of state change is restored to original state；
It checks the state of presently described interface signal, and the interface signal of state change is restored to original state.
Specifically, the current state for checking the cpu logic, and the logic of state change is restored to initial shape
State specifically includes:
It checks the flip-flop states in presently described cpu logic, and is compared with the trigger original state of record；If
It is inconsistent, then the flip-flop states are restored to original state；
It checks the setting state of value in presently described cpu logic, and is compared with the setting value original state of record；If
It is inconsistent, then the setting state of value is restored to original state；
It checks the parameter state in presently described cpu logic, and is compared with the parameter original state of record；If different
It causes, then restores the parameter state to original state.
It should be noted that flip-flop states can be obtained according to " flip-flop states " in SST, lead to before lower certain CPU of dress
The flip-flop states before maintenance software records are easy to act as are crossed, record flip-flop states again after filling in the case where completing CPU, and to front and back shape
State compares, the case where for lower dress inconsequent and with the different state of other subregions, by being linked up with operation
It is restored to initial state.Wherein, state vs are as shown in table 3 before and after memory unit.
| Subregion | CPU | ID | Function | Name | Extension | Current value | After lower dress |
| 1 | ALU A1‐1 | 1131 | SP15 D1 E31 | FFR001 | M1 | 1 | |
| 1 | ALU B1‐1 | 1133 | SP15 D1 E33 | FFR001 | M1 | 1 | |
| 1 | ALU A2‐1 | 1132 | SP15 D1 E32 | FFR001 | M1 | 1 | |
| 1 | ALU B2‐1 | 1134 | SP15 D1 E34 | FFR001 | M1 | 1 | |
| 2 | ALU A1‐1 | 1231 | SP15 D2 E31 | FFR001 | M1 | 1 | |
| 3 | ALU A1‐1 | 1331 | SP15 D3 E31 | FFR001 | M1 | 1 | |
| 4 | ALU A1‐1 | 1431 | SP15 D4 E31 | FFR001 | M1 | 1 | |
| 2 | ALU A2‐1 | 1232 | SP15 D2 E32 | FFR001 | M1 | 1 | |
| 3 | ALU A2‐1 | 1332 | SP15 D3 E32 | FFR001 | M1 | 1 | |
| 4 | ALU A2‐1 | 1432 | SP15 D4 E32 | FFR001 | M1 | 1 | |
| 2 | ALU B1‐1 | 1233 | SP15 D2 E33 | FFR001 | M1 | 1 | |
| 3 | ALU B1‐1 | 1333 | SP15 D3 E33 | FFR001 | M1 | 1 | |
| 4 | ALU B1‐1 | 1433 | SP15 D4 E33 | FFR001 | M1 | 1 | |
| 2 | ALU B2‐1 | 1234 | SP15 D2 E34 | FFR001 | M1 | 1 | |
| 3 | ALU B2‐1 | 1334 | SP15 D3 E34 | FFR001 | M1 | 1 | |
| 4 | ALU B2‐1 | 1434 | SP15 D4 E34 | FFR001 | M1 | 1 |
Table 3
Setting state of value can obtain according to " the substitution state of value " in SST, pass through maintenance software note before lower certain CPU of dress
The state for recording current setting value, record setting state of value again after being filled in the case where completing CPU, and front and back state is carried out pair
Than, the case where for lower dress inconsequent and with the different state of other subregions, be restored to just by being linked up with operation
State.Wherein, state vs are as shown in table 4 before and after setting value.
Table 4
Parameter state can be obtained according to " parametrization manages " in SST, pass through maintenance software records before lower certain CPU of dress
The state of parameter before being easy to act as, recording parameters state again after being filled in the case where completing CPU, and front and back state is compared, for
The case where lower dress inconsequent and with the different state of other subregions, by with operation link up be restored to initial state.Wherein,
State vs are as shown in table 5 before and after parameter.
| The logic page number | Functional block | Subparameter | Current value | After lower dress |
| SI11 D1 E09 21 | PSE007‐R21 | Value | 1 | |
| SI11 D1 E09 07 | MRC004‐R07 | In2 | 8.56V | |
| SI11 D1 E09 14 | PSE005‐R14 | Value | 1 | |
| SI11 D1 E09 03 | MRC003‐R03 | In2 | 8.54V | |
| SI11 D1 E09 13 | PSE006‐R13 | Value | 1 | |
| SI11 D1 E09 06 | PSE004‐R06 | Value | 1 | |
| SI11 D1 E09 16 | PSE004‐R16 | Value | 1 | |
| SI11 D1 E09 17 | MRC003‐R17 | In2 | 8.55V | |
| SI11 D1 E09 18 | MRC002‐R18 | In2 | 4.77V | |
| SI11 D1 E09 10 | MRC001‐R10 | In2 | 9V |
Table 5
Specifically, the state for checking presently described interface signal, and the interface signal of state change is restored to first
Beginning state, specifically includes:
Check the state for the network signal that presently described CPU is influenced, and with the original state of the network signal of record into
Row comparison；If inconsistent, the state of the network signal is restored to original state；
Check the state for the hard-wired signals that presently described CPU is influenced, and the initial shape with the hard-wired signals of record
State compares；If inconsistent, the state of the hard-wired signals is restored to original state.
It should be noted that interface signal is PS and KCO interface signal, it is divided into network signal and hard-wired signals, wherein
The inventory of hard-wired signals is as shown in table 6.
Table 6
Current signal state is recorded before lower dress, and analyzes to fill whether influence this signal under certain CPU, it is (non-security in TEC4
Grade DCS Logical Configuration) in force this signal to be current state, force values and current value one are first confirmed after the completion of lower dress in TEC4
Cancel after cause and forcing, inconsistent for state should resume work with running independent analysis and carrying out, and network signal can also be used
Same manner is carried out, and is not being repeated.
Under the embodiment of the present invention needs to carry out design alteration under nuclear power unit heat shut-down condition CPU offline when dress, first examine
It surveys to which whether the equipment that is influenced of CPU of lower dress needs to be isolated, if recording cpu logic without isolation and what CPU was influenced connecing
The original state of message number, and the state recorded is gradually restored after the completion of lower dress, it realizes direct in hot shut-down condition
Carry out offline lower dress, without not impacting in this CPU impact equipment and other trizonal normal operations to other, makes core
Electric set steady effectively improves lower dress efficiency in hot shut-down condition, saves unit resource, and improve the safety of unit.
Embodiment two
The embodiment of the invention provides the control systems that a kind of nuclear power unit joint debugging stage CPU is filled down offline, can be realized
All processes for the control method that above-mentioned nuclear power unit joint debugging stage CPU is filled down offline, referring to fig. 2, the system comprises:
Detection module 1, under hot shut-down condition, detecting to which whether the CPU of the lower dress equipment influenced needs to be isolated；
Logging modle 2 when the equipment for being influenced in the CPU does not need to be isolated, records the first of the cpu logic
The original state for the interface signal that beginning state and the CPU are influenced；
Under die-filling piece 3, for carrying out offline lower dress to the CPU；
Recovery module 4, for the CPU being restored to normal operating conditions, and will be described after completing offline lower dress
Cpu logic and the interface signal return to original state.
Under the embodiment of the present invention needs to carry out design alteration under nuclear power unit heat shut-down condition CPU offline when dress, first examine
It surveys to which whether the equipment that is influenced of CPU of lower dress needs to be isolated, if recording cpu logic without isolation and what CPU was influenced connecing
The original state of message number, and the state recorded is gradually restored after the completion of lower dress, it realizes direct in hot shut-down condition
Carry out offline lower dress, without not impacting in this CPU impact equipment and other trizonal normal operations to other, makes core
Electric set steady effectively improves lower dress efficiency in hot shut-down condition, saves unit resource, and improve the safety of unit.
In conclusion the invention proposes control method and system that a kind of nuclear power unit joint debugging stage CPU is filled down offline,
It is with preferable practical function: under restoring a certain particular CPU offline when dress, isolation signals and recovery are each in particular order
Part DCS state, it is ensured that its excess-three will not be impacted in the process system operation in fortune region and set state；It is effectively real
Existing unit carries out a certain specific CPU lower dress offline in the case where heat stops platform, fills efficiency under improving, saves unit resource, and extend
Unit service life.
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 (10)
1. the control method that a kind of nuclear power unit joint debugging stage CPU is filled down offline characterized by comprising
Under hot shut-down condition, detect to which whether the CPU of the lower dress equipment influenced needs to be isolated；
If it is not, then recording the original state of the cpu logic and the original state of interface signal that the CPU is influenced；
Offline lower dress is carried out to the CPU；
After completing offline lower dress, the CPU is restored to normal operating conditions, and the cpu logic and the interface are believed
It number returns to original state.
2. the control method that nuclear power unit joint debugging stage CPU as described in claim 1 is filled down offline, which is characterized in that described
It detects to which whether the CPU of the lower dress equipment influenced needs to be isolated, specifically includes:
Whether the equipment that detecting the CPU input signal is influenced needs to be isolated；
If it is not, whether the equipment for then detecting the CPU hard-wired signals and being influenced needs to be isolated；
If it is not, then determining that the equipment that the CPU is influenced does not need to be isolated.
3. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 2 is filled down offline, which is characterized in that described
Whether the equipment that detecting the CPU input signal is influenced needs to be isolated, and specifically includes:
Detect whether the CPU input signal failure can cause unit logic to degrade；
If it is not, the equipment for then determining that the CPU input signal is influenced does not need to be isolated.
4. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 3 is filled down offline, which is characterized in that described
Whether the equipment that detecting the CPU hard-wired signals is influenced needs to be isolated, and specifically includes:
Detect whether the CPU hard-wired signals failure can trigger unit malfunction；
If it is not, the equipment for then determining that the CPU hard-wired signals are influenced does not need to be isolated.
5. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 4 is filled down offline, which is characterized in that described
The original state of cpu logic includes trigger original state, setting value original state and parameter initial shape in the cpu logic
State.
6. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 5 is filled down offline, which is characterized in that described
The interface signal that CPU is influenced includes the network signal and hard-wired signals that the CPU is influenced.
7. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 6 is filled down offline, which is characterized in that described
After completing offline lower dress, the CPU is restored to normal operating conditions, and the cpu logic and the interface signal is extensive
Original state is arrived again, is specifically included:
After completing offline lower dress, the CPU is restored to normal operating conditions；
It checks the state of presently described cpu logic, and the logic of state change is restored to original state；
It checks the state of presently described interface signal, and the interface signal of state change is restored to original state.
8. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 7 is filled down offline, which is characterized in that described
It checks the current state of the cpu logic, and the logic of state change is restored to original state, specifically include:
It checks the flip-flop states in presently described cpu logic, and is compared with the trigger original state of record；If different
It causes, then restores the flip-flop states to original state；
It checks the setting state of value in presently described cpu logic, and is compared with the setting value original state of record；If different
It causes, then restores the setting state of value to original state；
It checks the parameter state in presently described cpu logic, and is compared with the parameter original state of record；If inconsistent,
Then the parameter state is restored to original state.
9. the control method that nuclear power unit joint debugging stage CPU as claimed in claim 8 is filled down offline, which is characterized in that described
It checks the state of presently described interface signal, and the interface signal of state change is restored to original state, specifically include:
It checks the state for the network signal that presently described CPU is influenced, and is carried out pair with the original state of the network signal of record
Than；If inconsistent, the state of the network signal is restored to original state；
Check the state for the hard-wired signals that presently described CPU is influenced, and with the original state of the hard-wired signals of record into
Row comparison；If inconsistent, the state of the hard-wired signals is restored to original state.
10. a kind of realize the nuclear power unit joint debugging stage CPU as described in any one of claim 1 to 9 lower controlling party filled offline
The system of method, which is characterized in that the system comprises:
Detection module, under hot shut-down condition, detecting to which whether the CPU of the lower dress equipment influenced needs to be isolated；
Logging modle when the equipment for being influenced in the CPU does not need to be isolated, records the initial shape of the cpu logic
The original state for the interface signal that state and the CPU are influenced；
Under die-filling piece, for carrying out offline lower dress to the CPU；
The CPU is restored to normal operating conditions for after completing offline lower dress by recovery module, and by the cpu logic
It is returned to original state with the interface signal.
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