CN109696586A - It is a kind of for testing the assessment method and system of electrical power distribution automatization system uncertainty - Google Patents
It is a kind of for testing the assessment method and system of electrical power distribution automatization system uncertainty Download PDFInfo
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Abstract
The present invention provides a kind of for testing the assessment method and system of electrical power distribution automatization system uncertainty, comprising: based on the every system parameter for influencing electrical power distribution automatization system test result, determines every absolute partial uncertainty；Based on the default measurement parameter of every absolutely partial uncertainty, relative uncertainty degree component is converted by every absolutely partial uncertainty respectively；Based on each relative uncertainty degree component, the relative uncertainty degree of test electrical power distribution automatization system is determined；Every system parameter includes: all kinds of quantified precision parameters in all kinds of absolute standard uncertainties and distribution terminal of each module in electrical power distribution automatization system.Present invention reduces the complexities of test macro, effectively assess power distribution automation test macro entirety uncertainty, strong operability.
Description
Technical field
The present invention relates to metrology and measurements and statistics field, and in particular to one kind is uncertain for testing electrical power distribution automatization system
The assessment method and system of degree.
Background technique
In order to simulate electrical power distribution automatization system practical operation situation, build using power distribution network primary equipment physical model as base
Plinth merges the apparatus figures information such as power distribution automation main station modular system and terminal, builds the distribution based on emulation module
Net running environment.
Power distribution automation test macro analysis of measurement errors and uncertain evaluation are fair, just development Test Detection Works
Premise and basis.The measuring device type that power distribution automation test macro is related to is more, and logical relation is complicated, error dot with not
It is more dispersed that degree of certainty carrys out source distribution, and systematic measurement error rule has dynamic characteristic, theory analysis difficulty and workload
It is larger.
Traditional analysis on Uncertainty only realizes the uncertainty evaluation of indicating value and major parameter, but for matching
Electrical testing environment entirety uncertainty but none reasonable method.To find out its cause, first is that power distribution automation test macro is whole
Body complexity is high, and uncertainty source is more, uncertainty source is all enumerated next highly difficult；Second is that existing standard is not true
Surely degree assessment method concentrates on carrying out uncertainty evaluation to single amount, when in face of table not explicit between a variety of variables and variable
When up to formula, it is difficult to carry out uncertainty evaluation to multivariable.
Accordingly, it is desirable to provide a kind of technical solution makes up the deficiencies in the prior art.
Summary of the invention
When in order to overcome simulation electrical power distribution automatization system in face of expression formula not explicit between a variety of variables and variable, it is difficult to
The problem of carrying out uncertainty evaluation to multivariable, the present invention provide a kind of evaluation for testing electrical power distribution automatization system uncertainty
Method and system.
It is a kind of for testing the assessment method of electrical power distribution automatization system uncertainty, comprising: based on influence power distribution automation
Every system parameter of system test result determines every absolute partial uncertainty；Based on every absolute partial uncertainty
Default measurement parameter, convert relative uncertainty degree component for every absolutely partial uncertainty respectively；Based on it is each relatively not
Degree of certainty component determines the relative uncertainty degree of test electrical power distribution automatization system；Every system parameter includes: power distribution automation system
All kinds of quantified precision parameters in system in all kinds of absolute standard uncertainties and distribution terminal of each module.
Each module includes: emulation module, master station module and time synchronization module in electrical power distribution automatization system；It is all kinds of absolute
Standard uncertainty, comprising: the absolute standard that the absolute standard uncertainty and allowable error that indicating value repeatability introduces introduce is not
Degree of certainty；All kinds of quantified precision parameters in distribution terminal include: system noise, temperature drift, timing accuracy, absolute precision,
Quantization error and bias temperature coefficient.
Based on the every system parameter for influencing electrical power distribution automatization system test result, every absolutely uncertainty point is determined
Amount, comprising: the absolute partial uncertainty that voltage is emulated in emulation module is calculated as follows:
Wherein: u1For the absolute partial uncertainty for emulating voltage, u11The absolute standard introduced for indicating value repeatability is not true
Fixed degree, u12The absolute standard uncertainty introduced for voltmeter allowable error；
The absolute partial uncertainty of simulated current is calculated as follows in emulation module:
Wherein: u2For the absolute partial uncertainty of simulated current, u21The absolute standard that indicating value repeatability introduces is uncertain
Degree, the absolute standard uncertainty u that ammeter allowable error introduces22；
The absolute partial uncertainty of the voltage of distribution terminal is calculated as follows:
Wherein: u3For the absolute partial uncertainty of voltage of distribution terminal, u31For system noise, u32For temperature drift, u33
For timing accuracy, u34For absolute precision, u35For quantization error, u36For bias temperature coefficient；
The absolute partial uncertainty of time synchronizing signal is calculated as follows in time synchronization module:
Wherein: u4For the absolute partial uncertainty of time synchronizing signal, u41The absolute standard introduced for indicating value repeatability
Uncertainty, u42The absolute standard uncertainty introduced for time difference measurement resolution ratio.
Based on the default measurement parameter of every absolutely partial uncertainty, every absolutely partial uncertainty is converted respectively
For relative uncertainty degree component, comprising:
Relative uncertainty degree component is determined by following formula:
ui'=ui/Ki；
Wherein, ui' for the relative uncertainty degree component of every absolutely uncertainty；
uiTo preset measurement parameter KiCorresponding absolute partial uncertainty, i=1,2,3,4；K1To be emulated in emulation module
The default measurement parameter of the absolute partial uncertainty of voltage, K2For the absolute partial uncertainty of simulated current in emulation module
Default measurement parameter, K3For the default measurement parameter of the absolute partial uncertainty of voltage in distribution terminal, K4For time synchronization
The default measurement parameter of the absolute partial uncertainty of time synchronizing signal in module.
Based on each relative uncertainty degree component, the relative uncertainty degree of test electrical power distribution automatization system is determined, comprising: pass through
Following formula determines relative uncertainty degree:
Wherein, u is the relative uncertainty degree for testing electrical power distribution automatization system；u1' it is the phase that voltage is emulated in emulation module
To partial uncertainty；u′2For the relative uncertainty degree component of simulated current in emulation module；u′3For voltage in distribution terminal
Relative uncertainty degree component；u′4For the relative uncertainty degree component of time synchronizing signal in time synchronization module.
It is a kind of for testing the assessment system of electrical power distribution automatization system uncertainty comprising: absolute partial uncertainty
Module, for determining every absolutely uncertainty point based on the every system parameter for influencing electrical power distribution automatization system test result
Amount；Relative uncertainty degree component module respectively will be every for the default measurement parameter based on every absolutely partial uncertainty
Absolute partial uncertainty is converted into relative uncertainty degree component；Relative uncertainty degree module, for based on each relatively uncertain
Component is spent, determines the relative uncertainty degree of test electrical power distribution automatization system；Every system parameter includes: in electrical power distribution automatization system
All kinds of quantified precision parameters in all kinds of absolute standard uncertainties and distribution terminal of each module.
Each module includes: emulation module, master station module and time synchronization module in electrical power distribution automatization system；It is all kinds of absolute
Standard uncertainty, comprising: the absolute standard that the absolute standard uncertainty and allowable error that indicating value repeatability introduces introduce is not
Degree of certainty；All kinds of quantified precision parameters in distribution terminal include: system noise, temperature drift, timing accuracy, absolute precision,
Quantization error and bias temperature coefficient.
Absolute partial uncertainty module, comprising: the absolute partial uncertainty of emulation voltage synthesizes submodule, simulated current
Absolute partial uncertainty synthesis submodule, the absolute partial uncertainty synthesis submodule of distribution terminal and time synchronizing signal are exhausted
Submodule is synthesized to partial uncertainty；
It emulates the absolute partial uncertainty of voltage and synthesizes submodule, for emulating voltage absolutely not in synthesis of artificial module
Degree of certainty component u1:
Wherein: u11For the absolute standard uncertainty that indicating value repeatability introduces, u12It is introduced for voltmeter allowable error exhausted
To standard uncertainty；
The absolute partial uncertainty of simulated current synthesizes submodule, absolutely not for simulated current in synthesis of artificial module
Degree of certainty component u2:
Wherein: u21The absolute standard uncertainty that indicating value repeatability introduces, the absolute standard that ammeter allowable error introduces
Uncertainty u22；
The absolute partial uncertainty of distribution terminal synthesizes submodule, for synthesizing the absolute partial uncertainty u of distribution-ends voltage3:
Wherein: u31For system noise, u32For temperature drift, u33For timing accuracy, u34For absolute precision, u35It is missed for quantization
Difference, u36For bias temperature coefficient；
The absolute partial uncertainty of time synchronizing signal synthesizes submodule, for the absolutely not true of generated time synchronization signal
Surely component u is spent4:
Wherein: u41For the relative standard uncertainty that indicating value repeatability introduces, u42It is introduced not for time difference measurement resolution ratio
Degree of certainty component.
Relative uncertainty degree component module, comprising: each relative uncertainty degree computational submodule, it is each relatively not true for determining
Surely component is spent:
ui'=ui/Ki；
Wherein, ui' for each absolute uncertainty relative uncertainty degree synthesize component；uiFor measurement parameter KiIt is corresponding exhausted
To partial uncertainty, i=1,2,3,4；K1For emulated described in emulation module voltage absolute partial uncertainty it is default
Measurement parameter, K2For the default measurement parameter of the absolute partial uncertainty of simulated current, K3Absolutely not for distribution terminal voltage
The default measurement parameter of degree of certainty component, K4For the default measurement parameter of the absolute partial uncertainty of time synchronizing signal.
Relative uncertainty degree module, further includes: system relative uncertainty degree computational submodule；System relative uncertainty degree meter
Operator module, for determining the relative uncertainty degree of test electrical power distribution automatization system by following formula:
Wherein, u is the relative uncertainty degree for testing electrical power distribution automatization system；u1' it is the relative uncertainty degree for emulating voltage
Component；u′2For the relative uncertainty degree component of simulated current；u′3For the voltage relative uncertainty degree component of distribution terminal；u′4For
The relative uncertainty degree component of time synchronizing signal.
Compared with the immediate prior art, technical solution provided by the invention is had the advantages that
1, the present invention has carried out opposite conversion to each variable, and obtained relative uncertainty degree is synthesized, to solve
Standard uncertainty assessment method concentrates on the evaluation that uncertainty is carried out to single amount in the prior art, and to a variety of changes
The problem of not having the case where explicit expression between amount and variable, not can be carried out evaluation；
2, each absolute partial uncertainty is converted relative uncertainty degree component by the present invention, using root mean square method by phase
To partial uncertainty synthesis system totality uncertainty, the uncertainty for not having to show expression formula between multivariable and variable is realized
Evaluation；
3, the present invention combs complicated system modular each according to the functional characteristics of power distribution automation test macro
The main feature amount of module, and fully consider the source of various uncertainties, it converts absolute uncertainty to relatively uncertain
Degree evaluation, finally synthesizes the uncertainty of modules, to obtain the relative uncertainty degree of whole system；
4, the present invention converts the whole uncertainty evaluation of system to according to the division of distribution test macro physical layer
The absolute partial uncertainty evaluation for evaluating modules respectively, reduces system complexity with this；
5, present invention reduces the complexities of test macro, effectively assess power distribution automation test macro and do not know integrally
Degree, strong operability.
Detailed description of the invention
Fig. 1 is design flow diagram of the invention；
Fig. 2 is the specific design flow diagram of uncertainty evaluation method of the present invention；
Fig. 3 is the corresponding relationship with each module in point terminal and electrical power distribution automatization system in the present invention；
Fig. 4 is the structure chart of uncertainty evaluation system of the present invention.
Specific embodiment
Further details of the technical solution of the present invention with reference to the accompanying drawings of the specification.
Uncertain component unit disunity due to emulating, with a terminal, these modules of main website and time synchronization module, nothing
Method directly synthesizes, so hereafter converting respectively to these components, obtains relative uncertainty degree component, in this way could be to system
Entirety is evaluated.
As shown in Figure 1, assessment method of the invention, generally includes following steps:
1) based on the every system parameter for influencing electrical power distribution automatization system test result, every absolutely uncertainty point is determined
Amount；
2) the default measurement parameter based on every absolutely partial uncertainty, respectively turns every absolutely partial uncertainty
Turn to relative uncertainty degree component；
3) it is based on each relative uncertainty degree component, determines the relative uncertainty degree of test electrical power distribution automatization system.
Emulation module uses 380V line simulation 10kV distribution line, is simulated by lumped parameter with distributed parameter line
The normal operational condition and failure operation situation on road, and system has equipment test function.Data acquisition module is to collected
Data such as are filtered at the pretreatment, and distribution terminal converts digital quantity for the simulation electrical quantities data obtained after pretreatment and is transferred to
Master station module.The carrier that master station module is issued and interacted with distribution terminal as data receiver, instruction in test environment.Time
Synchronization module provides GPS clock time adjustment function.
As shown in Fig. 2, absolute partial uncertainty evaluates the conversion with relative uncertainty degree, tool in master station module of the present invention
Body is shown in steps are as follows:
1. the absolute partial uncertainty evaluation of emulation module voltage measurement；
Emulation module voltage measured value is measured, statistics influences the absolute partial uncertainty of items of measurement result, specifically:
The absolute standard uncertainty u that indicating value repeatability introduces11, the absolute standard uncertainty u of voltmeter allowable error introducing12, imitate
True module voltage synthesizes absolute partial uncertainty
2. the absolute partial uncertainty evaluation of emulation module current measurement；
Emulation module practical measurement of current value is measured, statistics influences the absolute partial uncertainty of items of measurement result, specifically:
The absolute standard uncertainty u that indicating value repeatability introduces21, the absolute standard uncertainty u of ammeter allowable error introducing22, imitate
True blocks current synthesizes absolute partial uncertainty
3. data acquisition module measures absolute partial uncertainty evaluation；
Statistics influences all kinds of quantified precision parameters of measurement result, specifically: system noise u31, temperature drift u32, timing
Precision u33, absolute precision u34, quantization error u35, bias temperature coefficient u36, the absolute uncertainty of data acquisition module voltage synthesis
Component
4. time synchronization module measures absolute partial uncertainty evaluation:
As shown in figure 3, time synchronization module is carried out to main website, with point terminal and simulation software, the time is calibrated, and the time measures
The second that the pulse per second (PPS) 1PPS and tested GPS satellite signal of the local zone time provided by frequency source when universal counter measurement standard are exported
The time difference between pulse 1PPS, statistics influence the absolute partial uncertainty of items of measurement result, specifically: indicating value repeatability is drawn
The absolute standard uncertainty u entered41, the absolute partial uncertainty u of time difference measurement resolution ratio introducing42, the conjunction of time synchronization module
At absolute partial uncertainty
5. absolute partial uncertainty is converted into relative uncertainty degree component:
Use KiIndicate variable measurement parameter, corresponding absolute partial uncertainty is ui, then relative uncertainty degree component
ui'=ui/Ki, it may be assumed that
Emulation module voltage measurement parameter K1=300V, then emulation module voltage relative uncertainty degree component is u1'=u1/
K1；Emulation module current measurement parameter K2=20A, then emulation module electric current relative uncertainty degree component is u'2=u2/K2.Data
Acquisition module voltage measurement parameter K3=20V, data acquisition module voltage relative uncertainty degree component are u'3=u3/K3.Time
Synchronization module time measurement parameter K4=50s, time synchronization module time relative uncertainty degree component are u'4=u4/K4。
6. synthesizing relative uncertainty degree:
Relative uncertainty degree synthesis
Due to the relative uncertainty degree component comprising system modules in synthesis relative uncertainty degree u, its size is anti-
The summation of the uncertainty for the system entirety being made of modules has been reflected, therefore has synthesized relative uncertainty degree and has effectively evaluated and be
The uncertainty for entirety of uniting.
7. operation terminates.
Based on the same inventive concept, as shown in figure 4, the present invention also provides one kind for testing electrical power distribution automatization system not
The assessment system of degree of certainty.
Assessment system provided by the invention includes: absolute partial uncertainty module, for based on influence power distribution automation
Every system parameter of system test result determines every absolute partial uncertainty；Relative uncertainty degree component module, is used for
Based on the default measurement parameter of every absolutely partial uncertainty, respectively convert every absolutely partial uncertainty to relatively not
Degree of certainty component；Relative uncertainty degree module determines test electrical power distribution automatization system for being based on each relative uncertainty degree component
Relative uncertainty degree；Every system parameter includes: all kinds of absolute standard uncertainties of each module in electrical power distribution automatization system
With all kinds of quantified precision parameters in distribution terminal.
Each module includes: emulation module, master station module and time synchronization module in electrical power distribution automatization system；It is all kinds of absolute
Standard uncertainty, comprising: the absolute standard that the absolute standard uncertainty and allowable error that indicating value repeatability introduces introduce is not
Degree of certainty；All kinds of quantified precision parameters in distribution terminal include: system noise, temperature drift, timing accuracy, absolute precision,
Quantization error and bias temperature coefficient.
Absolute partial uncertainty module, comprising: the absolute partial uncertainty of emulation voltage synthesizes submodule, simulated current
Absolute partial uncertainty synthesis submodule, the absolute partial uncertainty synthesis submodule of distribution terminal and time synchronizing signal are exhausted
Submodule is synthesized to partial uncertainty；
It emulates the absolute partial uncertainty of voltage and synthesizes submodule, for emulating voltage absolutely not in synthesis of artificial module
Degree of certainty component u1:
Wherein: u11For the absolute standard uncertainty that indicating value repeatability introduces, u12It is introduced for voltmeter allowable error exhausted
To standard uncertainty；
The absolute partial uncertainty of simulated current synthesizes submodule, absolutely not for simulated current in synthesis of artificial module
Degree of certainty component u2:
Wherein: u21The absolute standard uncertainty that indicating value repeatability introduces, the absolute standard that ammeter allowable error introduces
Uncertainty u22；
The absolute partial uncertainty of distribution terminal synthesizes submodule, for synthesizing the absolute partial uncertainty u of distribution-ends voltage3:
Wherein: u31For system noise, u32For temperature drift, u33For timing accuracy, u34For absolute precision, u35It is missed for quantization
Difference, u36For bias temperature coefficient；
The absolute partial uncertainty of time synchronizing signal synthesizes submodule, for the absolutely not true of generated time synchronization signal
Surely component u is spent4:
Wherein: u41For the relative standard uncertainty that indicating value repeatability introduces, u42It is introduced not for time difference measurement resolution ratio
Degree of certainty component.
Relative uncertainty degree component module, comprising: each relative uncertainty degree computational submodule, it is each relatively not true for determining
Surely component is spent:
ui'=ui/Ki；
Wherein, ui' for each absolute uncertainty relative uncertainty degree synthesize component；uiFor measurement parameter KiIt is corresponding exhausted
To partial uncertainty, i=1,2,3,4；K1For emulated described in emulation module voltage absolute partial uncertainty it is default
Measurement parameter, K2For the default measurement parameter of the absolute partial uncertainty of simulated current, K3Absolutely not for distribution terminal voltage
The default measurement parameter of degree of certainty component, K4For the default measurement parameter of the absolute partial uncertainty of time synchronizing signal.
Relative uncertainty degree module, further includes: system relative uncertainty degree computational submodule；System relative uncertainty degree meter
Operator module, for determining the relative uncertainty degree of test electrical power distribution automatization system by following formula:
Wherein, u is the relative uncertainty degree for testing electrical power distribution automatization system；u1' it is the relative uncertainty degree for emulating voltage
Component；u′2For the relative uncertainty degree component of simulated current；u′3For the voltage relative uncertainty degree component of distribution terminal；u′4For
The relative uncertainty degree component of time synchronizing signal.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (10)
1. a kind of for testing the assessment method of electrical power distribution automatization system uncertainty characterized by comprising
Based on the every system parameter for influencing electrical power distribution automatization system test result, every absolute partial uncertainty is determined；
Based on the default measurement parameter of every absolutely partial uncertainty, respectively by the absolute partial uncertainty of items
It is converted into relative uncertainty degree component；
Based on each relative uncertainty degree component, the relative uncertainty degree of the test electrical power distribution automatization system is determined；
The items system parameter includes: all kinds of absolute standard uncertainties of each module in the electrical power distribution automatization system and matches
All kinds of quantified precision parameters in electric terminals.
2. assessment method according to claim 1, which is characterized in that each module includes: in the electrical power distribution automatization system
Emulation module, master station module and time synchronization module；
All kinds of absolute standard uncertainties, comprising: the absolute standard uncertainty and allowable error that indicating value repeatability introduces
The absolute standard uncertainty of introducing；
All kinds of quantified precision parameters in the distribution terminal include: system noise, temperature drift, timing accuracy, absolute precision,
Quantization error and bias temperature coefficient.
3. assessment method according to claim 1 or 2, it is characterised in that, it is described to be surveyed based on influence electrical power distribution automatization system
Every system parameter of test result determines every absolute partial uncertainty, comprising:
The absolute partial uncertainty that voltage is emulated in the emulation module is calculated as follows:
Wherein: u1For the absolute partial uncertainty for emulating voltage, u11For indicating value repeatability introduce absolute standard uncertainty,
u12The absolute standard uncertainty introduced for voltmeter allowable error；
The absolute partial uncertainty of simulated current is calculated as follows in the emulation module:
Wherein: u2For the absolute partial uncertainty of simulated current, u21The absolute standard uncertainty that indicating value repeatability introduces, electricity
The absolute standard uncertainty u that flow table allowable error introduces22；
The absolute partial uncertainty of the voltage of the distribution terminal is calculated as follows:
Wherein: u3For the absolute partial uncertainty of voltage of distribution terminal, u31For system noise, u32For temperature drift, u33It is fixed
Shi Jingdu, u34For absolute precision, u35For quantization error, u36For bias temperature coefficient；
The absolute partial uncertainty of time synchronizing signal is calculated as follows in the time synchronization module:
Wherein: u4For the absolute partial uncertainty of time synchronizing signal, u41The absolute standard introduced for indicating value repeatability is not true
Fixed degree, u42The absolute standard uncertainty introduced for time difference measurement resolution ratio.
4. assessment method according to claim 1 or 2, which is characterized in that described to be based on the absolute uncertainty of items
The default measurement parameter of component converts relative uncertainty degree component for every absolutely partial uncertainty respectively, comprising:
Relative uncertainty degree component is determined by following formula:
ui'=ui/Ki；
Wherein, ui' for the relative uncertainty degree component of every absolutely uncertainty；
uiTo preset measurement parameter KiCorresponding absolute partial uncertainty, i=1,2,3,4；
K1For the default measurement parameter of the absolute partial uncertainty of emulation voltage in the emulation module, K2For the emulation mould
The default measurement parameter of the absolute partial uncertainty of simulated current, K in block3For in the distribution terminal voltage absolutely not really
Surely the default measurement parameter of component, K are spent4For the absolute partial uncertainty of time synchronizing signal in the time synchronization module
Default measurement parameter.
5. assessment method according to claim 1 or 2, which is characterized in that it is described to be based on each relative uncertainty degree component, really
The relative uncertainty degree of the fixed test electrical power distribution automatization system, comprising:
The relative uncertainty degree is determined by following formula:
Wherein, u is the relative uncertainty degree of the test electrical power distribution automatization system；
u1' it is the relative uncertainty degree component that voltage is emulated in emulation module；
u′2For the relative uncertainty degree component of simulated current in emulation module；
u′3For the relative uncertainty degree component of voltage in the distribution terminal；
u′4For the relative uncertainty degree component of time synchronizing signal in time synchronization module.
6. a kind of for testing the assessment system of electrical power distribution automatization system uncertainty characterized by comprising
Absolute partial uncertainty module, for every system parameter based on influence electrical power distribution automatization system test result, really
Fixed every absolute partial uncertainty；
Relative uncertainty degree component module, for the default measurement parameter based on every absolutely partial uncertainty, respectively
Relative uncertainty degree component is converted by every absolutely partial uncertainty；
Relative uncertainty degree module determines the test electrical power distribution automatization system for being based on each relative uncertainty degree component
Relative uncertainty degree；
The items system parameter includes: all kinds of absolute standard uncertainties of each module in the electrical power distribution automatization system and matches
All kinds of quantified precision parameters in electric terminals.
7. assessment system according to claim 6, which is characterized in that
Each module includes: emulation module, master station module and time synchronization module in the electrical power distribution automatization system；
All kinds of absolute standard uncertainties, comprising: the absolute standard uncertainty and allowable error that indicating value repeatability introduces
The absolute standard uncertainty of introducing；
All kinds of quantified precision parameters in the distribution terminal include: system noise, temperature drift, timing accuracy, absolute precision,
Quantization error and bias temperature coefficient.
8. assessment system according to claim 6 or 7, it is characterised in that,
The absolute partial uncertainty module, comprising: the absolute partial uncertainty of emulation voltage synthesizes submodule, simulated current
Absolute partial uncertainty synthesis submodule, the absolute partial uncertainty synthesis submodule of distribution terminal and time synchronizing signal are exhausted
Submodule is synthesized to partial uncertainty；The absolute partial uncertainty of emulation voltage synthesizes submodule, described for synthesizing
The absolute partial uncertainty u of voltage is emulated in emulation module1:
Wherein: u11For the absolute standard uncertainty that indicating value repeatability introduces, u12The absolute mark introduced for voltmeter allowable error
Quasi- uncertainty；
The absolute partial uncertainty of the simulated current synthesizes submodule, for synthesizing the exhausted of simulated current in the emulation module
To partial uncertainty u2:
Wherein: u21The absolute standard uncertainty that indicating value repeatability introduces, the absolute standard that ammeter allowable error introduces be not true
Surely u is spent22；
The absolute partial uncertainty of distribution terminal synthesizes submodule, for synthesizing distribution end
The absolute partial uncertainty u of voltage3:
Wherein: u31For system noise, u32For temperature drift, u33For timing accuracy, u34For absolute precision, u35For quantization error,
u36For bias temperature coefficient；
The absolute partial uncertainty of time synchronizing signal synthesizes submodule, for synthesizing the absolute of the time synchronizing signal
Partial uncertainty u4:
Wherein: u41For the relative standard uncertainty that indicating value repeatability introduces, u42It is introduced for time difference measurement resolution ratio uncertain
Spend component.
9. assessment system according to claim 8, which is characterized in that
The relative uncertainty degree component module, comprising: each relative uncertainty degree computational submodule, it is each relatively not true for determining
Surely component is spent:
ui'=ui/Ki；
Wherein, ui' for each absolute uncertainty relative uncertainty degree synthesize component；
uiFor measurement parameter KiCorresponding absolute partial uncertainty, i=1,2,3,4；
K1For the default measurement parameter of the absolute partial uncertainty of emulation voltage described in the emulation module, K2It is described imitative
The default measurement parameter of the absolute partial uncertainty of true electric current, K3For the absolute partial uncertainty of the distribution terminal voltage
Default measurement parameter, K4For the default measurement parameter of the absolute partial uncertainty of the time synchronizing signal.
10. assessment system according to claim 6, which is characterized in that the relative uncertainty degree module, further includes: be
System relative uncertainty degree computational submodule；
The system relative uncertainty degree computational submodule, for determining the phase of the test electrical power distribution automatization system by following formula
To uncertainty:
Wherein, u is the relative uncertainty degree of the test electrical power distribution automatization system；
u1' it is the relative uncertainty degree component for emulating voltage；
u′2For the relative uncertainty degree component of simulated current；
u′3For the voltage relative uncertainty degree component of the distribution terminal；
u′4For the relative uncertainty degree component of time synchronizing signal.
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