CN109192338A - A kind of scaling method of nuclear power unit start-up course centre range protection definite value - Google Patents
A kind of scaling method of nuclear power unit start-up course centre range protection definite value Download PDFInfo
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- CN109192338A CN109192338A CN201810756744.4A CN201810756744A CN109192338A CN 109192338 A CN109192338 A CN 109192338A CN 201810756744 A CN201810756744 A CN 201810756744A CN 109192338 A CN109192338 A CN 109192338A
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- G21C—NUCLEAR REACTORS
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Abstract
The present invention is suitable for the technical field of reactor Control and protection system, provides a kind of scaling method of nuclear power unit start-up course centre range protection definite value, comprising: the voltage value in two channels of acquisition core thermal power and intermediate range；The voltage value is converted into current value according to Voltage-current conversion relationship；The corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value.Through the invention can be after compacted clay liners refueling outage, the protection definite value of range is demarcated among start-up course out-pile nuclear measurement system, is improved determination and the adjustment working efficiency of protection definite value, is reduced the residence time of low-power platform.
Description
Technical field
The invention belongs to the technical field of reactor Control and protection system more particularly to a kind of nuclear power unit start-up courses
The scaling method of intermediate range protection definite value.
Background technique
Intermediate range channel is the component part in reactor Nuclear Instrument system, is made of two independent same lines,
Guarantee redundant measurement of the neutron fluence rate from 2*10 to 5*10n/cms in (10% to the 100% of rated power) range.It is intermediate
Range measurement route be reactor it is critical to rated power 10% when use.The guarantor that intermediate range neutron measurement channel generates
Protecting signal includes: block signal C1, and intermediate range neutron fluence rate is high, and definite value is 20%FP full power, when being more than definite value, locking
Stick promotion is automatically or manually controlled；Shutdown signal RT, intermediate range neutron fluence rate is high, definite value 25%FP；Fail promptly to stop
The estimated transient state ATWT, definite value 30%FP of heap.
There is bullet stick, unexpected dilution or coolant in start-up course after refueling outage and surprisingly lose in compacted clay liners
Etc. accidents, cause reactor capability to be surprisingly substantially increased and bring reactor core partial burnt-out risk, need by heap outer core measure be
Unite intermediate range setting protection signal C1/RT/ATWT, and the protection signal for preventing core power from surprisingly going up excessively high, different is corresponding
The variation of the intermediate range levels of current of different capacity level, the corresponding intermediate range electric current of power level are filled with different reactor cores
Carry and different burn up level and change, protection signal can not act in time, make unit in the low-power platform residence time
It is longer, the risk of intermediate range saturation is easy to produce after nuclear power unit reloads and is again started up.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of calibration of range protection definite value among nuclear power unit start-up course
Method can not be acted in time with solving protection signal in the prior art, and unit is longer in the low-power platform residence time, Yi Ji
Nuclear power unit reloads be again started up after the problem of being easy to produce intermediate range saturation risk.
The first aspect of the embodiment of the present invention provides a kind of mark of nuclear power unit start-up course centre range protection definite value
Determine method, comprising:
Acquire the voltage value in two channels of core thermal power and intermediate range；
The voltage value is converted into current value according to Voltage-current conversion relationship；
The corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value.
The second aspect of the embodiment of the present invention provides a kind of mark of nuclear power unit start-up course centre range protection definite value
Determine device, comprising:
Data acquisition unit, for acquiring the voltage value in two channels of core thermal power and intermediate range；
Converting unit, for the voltage value to be converted to current value according to Voltage-current conversion relationship；
Computing unit, for calculating the corresponding electric current of intermediate range protection signal according to the thermal power and the current value
Definite value.
The third aspect of the embodiment of the present invention provides a kind of nuclear power unit centre range protection definite value calibration system, packet
Include: thermal balance measuring device KME, Nuclear Instrument RPN equipment, multimeter, memory, processor and storage are in the memory
And the computer program that can be run on the processor, the processor realize above-mentioned nuclear power when executing the computer program
Among unit the step of good layer protection definite value scaling method.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program, and the computer program realizes range protection among above-mentioned nuclear power unit when being executed by processor
The step of definite value scaling method.
Existing beneficial effect is the embodiment of the present invention compared with prior art: through the embodiment of the present invention, in nuclear power machine
In group start-up course, the voltage value in two channels of core thermal power and intermediate range is acquired, and voltage value is converted into electricity
Flow valuve calculates the corresponding current value of intermediate range protection signal according to thermal power and current value, can be in compacted clay liners
After refueling outage in start-up course, the protection definite value of range among out-pile nuclear measurement system is demarcated, improves and started
In journey protect definite value determination and adjustment working efficiency, reduce unit in the residence time of low-power platform, reduce because
The risk that intermediate range current saturation generates.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the reality of the scaling method of range protection definite value among nuclear power unit start-up course provided in an embodiment of the present invention
Existing flow diagram；
Fig. 2 is showing for the caliberating device that range protects definite value among nuclear power unit start-up course provided in an embodiment of the present invention
It is intended to；
Fig. 3 is showing for the calibration system that range protects definite value among nuclear power unit start-up course provided in an embodiment of the present invention
It is intended to.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " instruction is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, the presence or addition of element, component and/or its set.
It is also understood that mesh of the term used in this description of the invention merely for the sake of description specific embodiment
And be not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singular, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
It is range protection definite value scaling method among nuclear power unit start-up course provided in an embodiment of the present invention referring to Fig. 1,
This method in start-up course, can mark the protection definite value of intermediate quantity journey after refueling outage in compacted clay liners
It is fixed, so that avoiding occurring to play during startup stick, unexpected dilution or coolant the accidents such as surprisingly loses；By in presurized water reactor pair
Outer nuclear measurement system intermediate quantity journey setting protection signal, prevents core power from surprisingly going up excessively high；Since power level is corresponding
Intermediate range electric current changes with different core loadings and different burn up level, changes every time in compacted clay liners
It needs that the protection definite value of intermediate quantity journey is re-scaled and is arranged after material.Details are as follows for specific scaling method:
Step S101, the voltage value in two channels of acquisition core thermal power and intermediate range.
In the present embodiment, intermediate range includes multiple power steps, for different power step reactor cores collected
The voltage value in thermal power and two channels is also different.For the voltage value and reactor core for obtaining the intermediate range under different capacity step
Thermal power value, and guarantee the stability of data needs tested unit in corresponding power step at least 2 hours of stable operation,
Core thermal power is measured by secondary circuit heat balance system KME, and range among main control is measured by Nuclear Instrument system RPN
The voltage value in two channels.
Further, the voltage value in two channels of the acquisition core thermal power and intermediate range, comprising:
Each channel at least acquires five voltage values, and calculates the average voltage level of voltage value collected.
In the present embodiment, in collection voltages value, each channel at least collects and records 5 voltage values or surveys from continuous
5 values appropriate are chosen in the data of amount, and take the average value of 5 voltage values.
The voltage value is converted to current value according to Voltage-current conversion relationship by step S102.
In the present embodiment, protection control signal is directly triggered by the electric current of intermediate range, is with anti-in safety analysis
The power level of heap is answered to be analyzed as protection control information, thus by the levels of current of intermediate range in nuclear power unit
Between the corresponding power level of range protection definite value demarcated, the voltage value measured is converted into current value.
The corresponding current threshold of different nuclear power units and voltage threshold are different, therefore transformational relation is also different.
It is further, described that the voltage value is converted to by current value according to Voltage-current conversion relationship, comprising:
The transformational relation of voltage-to-current is I=10-11+0.8*VOr I=10-13+2*V,
Wherein, I is current value, and V is voltage value.
In the present embodiment, current threshold 10-11~10-3A, corresponding voltage threshold are 0~+10V or 1~+5V, then
Corresponding transformational relation is I=10-11+0.8*VOr I=10-13+2*V。
It is fixed to calculate the corresponding electric current of intermediate range protection signal according to the thermal power and the current value by step S103
Value.
In the present embodiment, the calculating of the different corresponding levels of current of power step is different from established standards, described
Protecting signal includes: block signal C1, shutdown signal RT, the estimated transient signal ATWT for failing emergency shut-down.Wherein, it is triggering
Block signal C1 can first be generated before intermediate range emergency shut-down, the mentioning manually and automatically of automatic blocking R stick and power control
It rises, prevents control rod from continuing extraction and trigger unnecessary shutdown；Shutdown signal RT is subcritical for preventing from piling up with limited reactions
Or heteropathy introduces accident under low power state, and such as: control rod ejection accident, control rod withdrawal accident, boron dilution accident, main steam line
Break accident etc., caused consequence；After the estimated transient signal ATWT generation for failing emergency shut-down, steam turbine trip is generated, promptly
Shutdown starts auxiliary feed water pump information number, and locking third group steam arranges condenser valve, and protection neutron flux is greater than 30%FP's
Signal.
The power step of intermediate range include: from nuclear power unit refuelling outage to marginal test before, before marginal test, zero power
Rate tests completion, 8 ± 2%FP power step, 30 ± 2%FP power step.
Further, the power phase completed in zero load test, core loading mode and the not big change of fuel type
Change and then think balanced recycle, under balanced recycle state, the power phase that zero load test is completed, the corresponding electric current of protection signal is determined
Value can be the final definite value of a upper circulation；Unit fuel corresponds to different circulations in different power phases, for example, in unit
First circulatory life-time is just and the neutron-flux level of corresponding cycle stage in fuel later period is different, therefore the corresponding electricity of intermediate range
Flow valuve is also different.
Due to intermediate range electric current with different core loadings and ceaselessly burn up level and change, if fuel
Great change occurs for type and core loading mode, excessively in the incredible situation of final definite value of circulation or a upper circulation,
It is then described that the corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value, comprising:
Intermediate range protects the corresponding current ration of signal after the completion of calculating zero load test according to the current value, calculates
Formula are as follows:
Wherein, i is the channel number of intermediate range, i=1,2, IRCDOPPLER, iIt is pointed out now for DOPPLER in marginal test
The i-th channel of intermediate range current value, value 10-6A,
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range,
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range,
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
Further, the power phase 8 ± 2%FP power phase completed in zero load test, it is described according to the hot merit
Rate and the current value calculate the corresponding current ration of intermediate range protection signal, further includes:
The intermediate range protection signal pair in 8 ± 2%FP power step is calculated according to the thermal power and the current value
The power offset value answered；
The corresponding current ration of intermediate range protection signal is determined according to the power offset value；
Deviation calculation formula are as follows:
Wherein, the channel number that i=1,2 represent intermediate range；P is the thermal power acquired in 8 ± 2%FP power step, single
Position is %FP；
IRCP, iFor the current value in No. i-th channel of range among 8 ± 2%FP power step；
IRCC1-old, iFor the corresponding current ration of No. i-th channel C of intermediate range 1 after the completion of zero load test；
IRCRT-old, iFor the corresponding current ration of No. i-th channel RT of intermediate range after the completion of zero load test；
IRCATWT-old, iFor the corresponding current ration of No. i-th channel ATWT of intermediate range after the completion of zero load test；
ΔC1,iFor the corresponding power offset value of block signal in No. i-th channel of intermediate range；
ΔRT,iFor the corresponding power offset value of shutdown signal in No. i-th channel of intermediate range；
ΔATWT,iFor the corresponding power deviation of estimated transient signal for failing emergency shut-down in No. i-th channel of intermediate range
Value.
It is further, described that the corresponding current ration of intermediate range protection signal is determined according to the deviation, comprising:
If | ΔC1,i| < 5%FP and | ΔRT,i| < 5%FP and | ΔATWT,i| < 5%FP, i=1,2, then
If | ΔC1,i| >=5%FP or | ΔRT,i| >=5%FP or | ΔATWT,i| >=5%FP, i=1,2, then
Wherein P is the thermal power acquired in 8 ± 2%FP power step, unit %FP, IRCP,iFor in 8 ± 2%FP function
The current value in No. i-th channel of the intermediate range that rate step obtains；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range,
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range,
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
Further, described according to the thermal power and the current value in nuclear power unit 30 ± 2%FP power phase
Calculate the corresponding current ration of intermediate range protection signal, further includes:
The intermediate range protection signal pair in 30 ± 2%FP power step is calculated according to the thermal power and the current value
The current ration answered, calculation formula are as follows:
Wherein, i=1,2, P8 ± 2%FPFor the thermal power acquired in 8 ± 2%FP power step, unit %FP；
P30 ± 2%FPFor the thermal power acquired in 30 ± 2%FP power step, unit %FP；
IRC8 ± 2%FP, iFor the current value in No. i-th channel of range among 8 ± 2%FP power step；
IRC30 ± 2%FP, iFor the current value in No. i-th channel of range among 30 ± 2%FP power step；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range；
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range；
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
Further, the scaling method of the nuclear power unit start-up course centre range protection definite value further include: reloading
The protection definite value of intermediate range before shutdown to marginal test is the corresponding ultimate current definite value of a circulation on reactor fuel.
In the present embodiment, from refuelling outage to marginal test before the corresponding current ration of intermediate range protection signal can
Think that the value of a upper circulation is constant.
Further, the scaling method of the nuclear power unit start-up course centre range protection definite value further include:
C1i=2.0 × 10-5A,
RTi=2.5 × 10-5A,
ATWTiFor the corresponding ultimate current definite value of a circulation on reactor fuel；
Wherein, i=1,2 indicate No. i-th channel of intermediate range；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range；
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range；
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
In the present embodiment, completion of reloading is carried out before Startup physics test reaches marginal test in reactor to need to core
The corresponding current ration of C1, RT protection signal of range is adjusted among instrument RPN system, and ATWT protects the corresponding electricity of signal
Stream definite value remains unchanged.
It should be noted that those skilled in the art are in the technical scope disclosed by the present invention, can be readily apparent that other
Sequencing schemes should also will not repeat them here within protection scope of the present invention.
Through this embodiment, in nuclear power unit start-up course, two for acquiring core thermal power and intermediate range are logical
The voltage value in road, and voltage value is converted into current value, it is corresponding to calculate intermediate range protection signal according to thermal power and current value
Current value, can be after compacted clay liners refueling outage in start-up course, to range among out-pile nuclear measurement system
Protection definite value is demarcated, and is improved the working efficiency for protecting determination and the adjustment of definite value in start-up course, is reduced unit and exist
The residence time of low-power platform reduces the risk generated by intermediate range current saturation；And through this embodiment, it eliminates
The determination and adjustment work of 48%FP correlation definite value, are conducive to the thermal efficiency for improving system equipment secondary circuit, after each overhaul
The time for saving 48%FP platform power per liter, reduce risk caused by may being saturated because of intermediate range.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
It referring to fig. 2, is the calibration dress of range protection definite value among nuclear power unit start-up course provided in an embodiment of the present invention
The schematic diagram set, for ease of description, only parts related to embodiments of the present invention are shown.
The caliberating device of range protection definite value includes: among the nuclear power unit start-up course
Data acquisition unit 21, for acquiring the voltage value in two channels of core thermal power and intermediate range；
Converting unit 22, for the voltage value to be converted to current value according to Voltage-current conversion relationship；
Computing unit 23, for calculating the corresponding electricity of intermediate range protection signal according to the thermal power and the current value
Flow definite value.
Through this embodiment, in nuclear power unit start-up course, two for acquiring core thermal power and intermediate range are logical
The voltage value in road, and voltage value is converted into current value, it is corresponding to calculate intermediate range protection signal according to thermal power and current value
Current value, can be after compacted clay liners refueling outage in start-up course, to range among out-pile nuclear measurement system
Protection definite value is demarcated, and is improved the working efficiency for protecting determination and the adjustment of definite value in start-up course, is reduced unit and exist
The residence time of low-power platform reduces the risk generated by intermediate range current saturation；And through this embodiment, it eliminates
The determination and adjustment work of 48%FP correlation definite value, are conducive to the thermal efficiency for improving system equipment secondary circuit, after each overhaul
The time for saving 48%FP platform power per liter, reduce risk caused by may being saturated because of intermediate range.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different functions
Unit, module are completed, i.e., the internal structure of the mobile terminal is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional module in embodiment can integrate in one processing unit, be also possible to
Each unit physically exists alone, and can also be integrated in one unit with two or more units, above-mentioned integrated unit
Both it can take the form of hardware realization, can also realize in the form of software functional units.In addition, the tool of each functional module
Body title is also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Module in above-mentioned mobile terminal
Specific work process, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
Fig. 3 is the calibration system for the nuclear power unit start-up course centre range protection definite value that one embodiment of the invention provides
Schematic diagram.As shown in figure 3, the calibration system 3 of range protection definite value includes: heat among the nuclear power unit start-up course of the embodiment
Balancing a survey equipment KME, Nuclear Instrument RPN equipment, multimeter, processor 30, memory 31 and it is stored in the memory 31
In and the computer program 32 that can be run on the processor 30, wherein multimeter supports 10V voltage class, allowable error
For ± 0.01V, multimeter is also possible to meet other recorders of same precision.The processor 30 executes the computer journey
The step among above-mentioned each nuclear power unit in range protection definite value scaling method embodiment is realized when sequence 32, such as shown in Fig. 1
Step 101 to 103.Alternatively, the processor 30 is realized when executing the computer program 32 in above-mentioned each Installation practice
The function of each module/unit, such as the function of module 21 to 24 shown in Fig. 2.
Illustratively, the computer program 32 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 31, and are executed by the processor 30, to complete the present invention.Described one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Execution of the computer program 32 among the nuclear power unit start-up course in the calibration system 3 of range protection definite value is described
Process.
The calibration system 3 of range protection definite value may include among the nuclear power unit start-up course, but be not limited only to, and handle
Device 30, memory 31.It will be understood by those skilled in the art that Fig. 3 is only that the range protection of nuclear power unit start-up course centre is fixed
The example of the calibration system 3 of value does not constitute the limit to the calibration system 3 of range protection definite value among nuclear power unit start-up course
It is fixed, it may include perhaps combining certain components or different components, such as the core than illustrating more or fewer components
Among motor group start-up course the calibration system 3 of range protection definite value can also include input-output equipment, network access equipment,
Bus etc..
Alleged processor 30 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
The memory 31 can be the interior of the calibration system 3 of the nuclear power unit start-up course centre range protection definite value
The hard disk or memory of the calibration system 3 of range protection definite value among portion's storage unit, such as nuclear power unit start-up course.It is described to deposit
Reservoir 31 is also possible to the External memory equipment of the calibration system 3 of range protection definite value among the nuclear power unit start-up course,
Such as the plug-in type hard disk being equipped on the calibration system 3 of range protection definite value among the nuclear power unit start-up course, intelligently deposit
Card storage (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash Card)
Deng.Further, the memory 31 can also both include the mark of range protection definite value among the nuclear power unit start-up course
The internal storage unit for determining system 3 also includes External memory equipment.The memory 31 for store the computer program with
And other programs and data needed for the calibration system 3 of range protection definite value among the nuclear power unit start-up course.It is described to deposit
Reservoir 31 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of logical function partition, there may be another division manner in actual implementation, such as
Multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be through some interfaces, device
Or the INDIRECT COUPLING or communication connection of unit, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry the computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that described
The content that computer-readable medium includes can carry out increasing appropriate according to the requirement made laws in jurisdiction with patent practice
Subtract, such as in certain jurisdictions, according to legislation and patent practice, computer-readable medium do not include be electric carrier signal and
Telecommunication signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (13)
1. the scaling method of range protection definite value among a kind of nuclear power unit start-up course characterized by comprising
Acquire the voltage value in two channels of core thermal power and intermediate range；
The voltage value is converted into current value according to Voltage-current conversion relationship；
The corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value.
2. the scaling method of range protection definite value among nuclear power unit start-up course as described in claim 1, which is characterized in that
The voltage value in two channels of the acquisition core thermal power and intermediate range, comprising:
Each channel at least acquires five voltage values, and calculates the average voltage level of voltage value collected.
3. the scaling method of range protection definite value among nuclear power unit start-up course as described in claim 1, which is characterized in that
It is described that the voltage value is converted to by current value according to Voltage-current conversion relationship, comprising:
The transformational relation of voltage-to-current is I=10-11+0.8*VOr I=10-13+2*V,
Wherein, I is current value, and V is voltage value.
4. the scaling method of range protection definite value among nuclear power unit start-up course as described in claim 1, which is characterized in that
The corresponding current ration of the intermediate range protection signal includes: the corresponding current ration of block signal C1, and RT pairs of shutdown signal
The current ration answered fails the corresponding current ration of estimated transient signal ATWT of emergency shut-down.
5. the scaling method of range protection definite value among nuclear power unit start-up course as claimed in claim 4, which is characterized in that
It is described that the corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value, comprising:
Intermediate range protects the corresponding current ration of signal, calculation formula after the completion of calculating zero load test according to the current value
Are as follows:
Wherein, i is the channel number of intermediate range, i=1,2, IRCDOPPLER, iIt is pointed out in current for DOPPLER in marginal test
Between the i-th channel of range current value, value 10-6A,
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range,
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range,
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
6. the scaling method of range protection definite value among nuclear power unit start-up course as claimed in claim 4, which is characterized in that
It is described that the corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value, further includes:
It is corresponding in the intermediate range protection signal of 8 ± 2%FP power step according to the thermal power and current value calculating
Power offset value；
The corresponding current ration of intermediate range protection signal is determined according to the power offset value；
Deviation calculation formula are as follows:
Wherein, the channel number that i=1,2 represent intermediate range；P is the thermal power acquired in 8 ± 2%FP power step, unit
For %FP；
IRCP, iFor the current value in No. i-th channel of range among 8 ± 2%FP power step；
IRCC1-old, iFor the corresponding current ration of No. i-th channel C of intermediate range 1 after the completion of zero load test；
IRCRT-old, iFor the corresponding current ration of No. i-th channel RT of intermediate range after the completion of zero load test；
IRCATWT-old, iFor the corresponding current ration of No. i-th channel ATWT of intermediate range after the completion of zero load test；
ΔC1,iFor the corresponding power offset value of block signal in No. i-th channel of intermediate range；
ΔRT,iFor the corresponding power offset value of shutdown signal in No. i-th channel of intermediate range；
ΔATWT,iFor the corresponding power offset value of estimated transient signal for failing emergency shut-down in No. i-th channel of intermediate range.
7. the scaling method of range protection definite value among nuclear power unit start-up course as claimed in claim 6, which is characterized in that
It is described that the corresponding current ration of intermediate range protection signal is determined according to the deviation, comprising:
If | ΔC1,i| < 5%FP and | ΔRT,i| < 5%FP and | ΔATWT,i| < 5%FP, i=1,2, then
If | ΔC1,i| >=5%FP or | ΔRT,i| >=5%FP or | ΔATWT,i| >=5%FP, i=1,2, then
Wherein P is the thermal power acquired in 8 ± 2%FP power step, unit %FP, IRCP, iFor in 8 ± 2%FP power platform
The current value in No. i-th channel of the intermediate range that rank obtains；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range,
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range,
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
8. the scaling method of range protection definite value among nuclear power unit start-up course as claimed in claim 4, which is characterized in that
It is described that the corresponding current ration of intermediate range protection signal is calculated according to the thermal power and the current value, further includes:
It is corresponding in the intermediate range protection signal of 30 ± 2%FP power step according to the thermal power and current value calculating
Current ration, calculation formula are as follows:
Wherein, i=1,2, P8 ± 2%FPFor the thermal power acquired in 8 ± 2%FP power step, unit %FP；
P30 ± 2%FPFor the thermal power acquired in 30 ± 2%FP power step, unit %FP；
IRC8 ± 2%FP, iFor the current value in No. i-th channel of range among 8 ± 2%FP power step；
IRC30 ± 2%FP, iFor the current value in No. i-th channel of range among 30 ± 2%FP power step；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range；
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range；
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
9. the scaling method of range protection definite value among nuclear power unit start-up course as described in claim 1, which is characterized in that
The method also includes:
The protection definite value of intermediate range before refuelling outage to marginal test is the corresponding final electricity of a circulation on reactor fuel
Flow definite value.
10. the scaling method of range protection definite value, feature exist among nuclear power unit start-up course as claimed in claim 4
In, the method also includes:
Intermediate range protection definite value before reactor refuling is accomplished to marginal test is respectively as follows:
C1i=2.0 × 10-5A,
RTi=2.5 × 10-5A,
ATWTiFor the corresponding ultimate current definite value of a circulation on reactor fuel；
Wherein, i=1,2 indicate No. i-th channel of intermediate range；
C1iFor the current ration of the corresponding block signal in intermediate the i-th channel of range；
RTiFor the current ration of the corresponding shutdown signal in intermediate the i-th channel of range；
ATWTiFor the current ration of the corresponding estimated transient signal for failing emergency shut-down in intermediate the i-th channel of range.
11. the caliberating device of range protection definite value among a kind of nuclear power unit start-up course characterized by comprising
Data acquisition unit, for acquiring the voltage value in two channels of core thermal power and intermediate range；
Converting unit, for the voltage value to be converted to current value according to Voltage-current conversion relationship；
Computing unit, it is fixed for calculating the corresponding electric current of intermediate range protection signal according to the thermal power and the current value
Value.
12. range protects definite value calibration system, including thermal balance measuring device KME, Nuclear Instrument RPN to set among a kind of nuclear power unit
Standby, multimeter, memory, processor and storage are in the memory and the computer journey that can run on the processor
Sequence, which is characterized in that the processor is realized when executing the computer program such as any one of claims 1 to 10 the method
The step of.
13. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as claims 1 to 10 of realization the method.
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