CN104133189B - Method and device for detecting electric quantity return and supplement error at voltage loss of one phase of three-phase four-wire electric energy meter - Google Patents
Method and device for detecting electric quantity return and supplement error at voltage loss of one phase of three-phase four-wire electric energy meter Download PDFInfo
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- CN104133189B CN104133189B CN201410337422.8A CN201410337422A CN104133189B CN 104133189 B CN104133189 B CN 104133189B CN 201410337422 A CN201410337422 A CN 201410337422A CN 104133189 B CN104133189 B CN 104133189B
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Abstract
Provided are a method and a device for detecting electric quantity return and supplement error at voltage loss of one phase of a three-phase four-wire electric energy meter. The method comprises the following steps: an error detection model of correction power at voltage loss of one phase of a three-phase four-wire electric energy meter is established; the positive sequence components, the negative sequence components and the zero sequence components of voltages of three phases and the positive sequence components, the negative sequence components and the zero sequence components of currents of three phases of a grid in a set period of time before the current voltage loss are acquired, and the degrees of unbalance and the phase differences are determined; and the error range of correction power is determined according to the degrees of unbalance, the phase differences and the error detection model, and the error range of electric quantity return and supplement is determined according to the error range of correction power. Whether current returned and supplemented electric quantity can be utilized to carry out electric quantity return and supplement for the voltage loss can be determined according to the error range of electric quantity return and supplement. The reliability of return and supplement at voltage loss of one phase of the three-phase four-wire electric energy meter is improved, and the accuracy of electric quantity return and supplement detection is improved.
Description
Technical field
The present invention relates to during a kind of power system electric energy metrical field, more particularly to three-phase and four-line electric energy meter one phase decompression
Move back benefit electricity error detection method and system.
Background technology
Electric energy meter species is a lot of at present, and electric energy meter is among a development process with rapid changepl. never-ending changes and improvements.Electric energy meter decompression
Institute's quantity calculation and actual electricity is led to not to correspond, then it needs to be determined that moving back benefit electricity.
Electric energy meter decompression when institute quantity calculation, is the electricity of actual metered during electrical energy meter fault, also referred to as fault electricity, decompression event
During barrier, fault electricity majority of case is fewer than actual power consumption, and special circumstances are also possible to can be many, can not correctly measure in a word
Actual power consumption, majority of case is to differ greatly, need move back mend fewer than actual power consumption count or many meters electricity.Need for this
Know actual power consumption, actual electricity is also referred to as correct electricity, can not directly learn during decompression, can be obtained with " voltage substitution method "
To the readjustment electric quantity close to correct electricity.Readjustment electric quantity subtracts fault electricity, is on the occasion of expression electric energy meter has counted electricity less, is use
The electricity that family should be handed in retroactively；For negative value, represent and counted electricity electric energy meter more, for returning the electricity of user, the two is referred to as moving back benefit
Electricity, can be formulated: move back benefit electricity=readjustment electric quantity-fault electricity.
" the voltage substitution method " being used at present moves back benefit electricity method when determining three-phase and four-line one phase decompression is to use non-mistake
Pressure phase voltage amplitude substitutes decompression phase voltage amplitude, calculates decompression phase with normal phase voltage with the phase meter of corresponding electric current
Corrigendum voltage current phase difference, replaces decompression phase voltage current and phase difference with this phase contrast, thus calculating corrigendum active power,
Then obtain readjustment electric quantity.The method overcome the shortcoming needing to suppose three-phase load current balance type, but the electrical network three-phase of reality
Voltage is not necessarily preferable poised state.When imbalance of three-phase voltage, according to " voltage substitution method " principle, it moves back benefit electricity
Have error.
Moving back of not knowing that " voltage substitution method " calculate at present mend electricity error with non-equilibrium among three phase voltages change concrete
Scope.Such as, when three-phase voltage negative phase-sequence degree of unbalancedness is 1%, moving back benefit electricity error is 1% or 10%, thus can produce this
What method obtained moves back the whether accurately query in actual applications of benefit electricity, impact the method move back the reality mended in electricity should
With.For this reason, it is uneven in three-phase voltage to also need to readjustment electric quantity during a kind of technical scheme estimation three-phase and four-line electric energy meter one phase decompression
The concrete scope of error during weighing apparatus it is ensured that move back benefit electricity error in knowable scope so that " voltage substitution method " is more rigorous can
Lean on.
Content of the invention
Based on this it is necessary to be directed to the problems referred to above, a kind of can determine is provided to move back the three-phase and four-line mending electricity range of error
Benefit electricity error detection method and system is moved back during electric energy meter one phase decompression.
Benefit electricity error detection method is moved back during a kind of three-phase and four-line electric energy meter one phase decompression, comprising:
The error-detecting model of more positive when setting up three-phase and four-line electric energy meter one phase decompression:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent voltage zero sequence
Degree of unbalancedness, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero sequence
The phase contrast of electric current,Represent the phase contrast of residual voltage and forward-order current,Represent the phase of residual voltage and negative-sequence current
Potential difference,Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,
Represent the phase contrast of negative sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Obtain when the positive-sequence component of electrical network three-phase voltage in setting time section before time decompression, negative sequence component, zero-sequence component with
And the positive-sequence component of three-phase current, negative sequence component and zero-sequence component；
According to the positive-sequence component of the described three-phase voltage, positive-sequence component of negative sequence component, zero-sequence component and three-phase current, negative
Order components and zero-sequence component determine εv2、εv0、εi2、εi0、
According to described εv2、εv0、εi2、εi0、With the inspection of described error
Survey model and determine corrigendum power error scope, determined according to corrigendum power error scope and move back benefit electricity range of error.
Benefit electricity error detecting system is moved back during a kind of three-phase and four-line electric energy meter one phase decompression, comprising:
Model building module, for the error-detecting model of more positive when setting up three-phase and four-line electric energy meter one phase decompression:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent voltage zero sequence
Degree of unbalancedness, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero sequence
The phase contrast of electric current,Represent the phase contrast of residual voltage and forward-order current,Represent the phase of residual voltage and negative-sequence current
Potential difference,Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,
Represent the phase contrast of negative sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Data acquisition module, works as the positive-sequence component of electrical network three-phase voltage in setting time section before time decompression, bears for obtaining
The positive-sequence component of order components, zero-sequence component and three-phase current, negative sequence component and zero-sequence component；
Parameter determination module, for according to the positive-sequence component of described three-phase voltage, negative sequence component, zero-sequence component and three-phase
The positive-sequence component of electric current, negative sequence component and zero-sequence component determine εv2、εv0、εi2、εi0、
Range of error detection module, for according to described εv2、εv0、εi2、εi0、 Determine corrigendum power error scope with described error-detecting model, determined according to corrigendum power error scope
Move back benefit electricity range of error.
Move back benefit electricity error detection method and system during above-mentioned three-phase and four-line electric energy meter one phase decompression, by obtain current this
The positive-sequence component of electrical network three-phase voltage, negative sequence component, zero-sequence component and three-phase current in setting time section before secondary decompression
Positive-sequence component, negative sequence component and zero-sequence component, then enter to error according to these values obtaining and the error-detecting model of foundation
Row detection, obtains the range of error of more positive, it is hereby achieved that moving back benefit electricity range of error.According to the error moving back benefit electricity
Scope can decide whether in default range of error, such that it is able to decide whether to mend electricity to this decompression using currently moving back
Carry out electricity moves back benefit, moves back the reliability of benefit when improve three-phase and four-line electric energy meter one phase decompression, and improves and move back benefit electricity
Detection accuracy.
Brief description
Fig. 1 is that the flow process moved back during three-phase and four-line electric energy meter one phase decompression of the present invention and mend electricity error detection method embodiment is shown
It is intended to；
Fig. 2 is the schematic flow sheet setting up error-detecting model in the embodiment of the present invention；
Fig. 3 is voltage x current phasor schematic diagram during three-phase and four-line electric energy meter a phase decompression in the embodiment of the present invention；
Fig. 4 is that the structure moved back during three-phase and four-line electric energy meter one phase decompression of the present invention and mend electricity error detecting system embodiment is shown
It is intended to.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
As shown in figure 1, being to move back benefit electricity error detection method embodiment during three-phase and four-line electric energy meter one phase decompression of the present invention
Schematic flow sheet, including step:
Step s101: the error-detecting model of more positive when setting up three-phase and four-line electric energy meter one phase decompression:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent voltage zero sequence
Degree of unbalancedness, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero sequence
The phase contrast of electric current,Represent the phase contrast of residual voltage and forward-order current,Represent the phase of residual voltage and negative-sequence current
Potential difference,Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,
Represent the phase contrast of negative sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Step s102: obtain when the positive-sequence component of electrical network three-phase voltage in setting time section before time decompression, negative sequence component, zero
The positive-sequence component of order components and three-phase current, negative sequence component and zero-sequence component；
When three-phase and four-line electric energy meter runs, can monitor and record electrical network three-phase every setting time (such as 15 minutes)
Voltage positive-sequence component, voltage negative sequence component, voltage zero-sequence component, electric current positive-sequence component, electric current negative sequence component, current zero sequence component
Deng.When decompression is detected, obtain before current decompression the positive-sequence component of electrical network three-phase voltage in setting time section, negative sequence component, zero
The positive-sequence component of order components and three-phase current, negative sequence component and zero-sequence component.Setting time section is a neighbouring current decompression
The time period of time.Such as, setting time section can be nearest one month, that is, obtain the number of record in the current decompression previous moon
According to.
Step s103: according to the positive-sequence component of described three-phase voltage, negative sequence component, zero-sequence component and three-phase current just
Order components, negative sequence component and zero-sequence component determine degree of unbalancedness εv2、εv0、εi2、εi0With each phase contrast
According to three-phase voltage positive-sequence component, voltage negative sequence component, voltage zero-sequence component, electric current positive-sequence component, electric current negative phase-sequence
Component, current zero sequence component can determine voltage negative phase-sequence degree of unbalancedness, voltage zero sequence degree of unbalancedness, electric current negative phase-sequence degree of unbalancedness,
The phase contrast of the phase contrast of current zero sequence degree of unbalancedness, residual voltage and zero-sequence current, residual voltage and forward-order current, zero sequence electricity
Pressure and the phase contrast of the phase contrast of phase contrast, positive sequence voltage and forward-order current, negative sequence voltage and zero-sequence current of negative-sequence current, negative
The phase contrast of the phase contrast, negative sequence voltage and negative-sequence current of sequence voltage and forward-order current.
Step s104: according to described degree of unbalancedness εv2、εv0、εi2、εi0And phase contrast Determine corrigendum power error scope with described error-detecting model, determined according to corrigendum power error scope
Move back benefit electricity range of error.
Wherein in a kind of embodiment, the same type of historical data due to collection in setting time section is possible to not
With then directly calculating can obtain multiple corrigendum power error scopes.Range of error is carried out ascending order arrangement by maximum, permissible
Choose maximum error scope as corrigendum power error scope.
In another embodiment it is also possible to range of error is carried out ascending order arrangement by maximum, by range of error number
It is multiplied with preset ratio, is obtained numerical value t, t position range of error in ranking results is set to correct range of error.This enforcement
The purpose of example is to delete the range of error that abnormal data (the abnormal data that special circumstances produce) produces, being therefore provided with pre-
If ratio.Depending on preset ratio can be according to specifically abnormal data amount check.Such as, 95% can be set to.In 100 range of error
In, select the range of error of ranking the 95th.
Alternatively, it is also possible to the first historical data advance Screening Treatment to collection, then carry out again correcting power error model
Enclose calculating.
Because readjustment electric quantity is multiplied by the time equal to more positive it is possible to obtain corrigendum according to corrigendum power error scope
The range of error of electricity, and then obtain the range of error moving back benefit electricity.Wherein, more positive can be according to " voltage substitution method "
Determine.
This programme is by the positive-sequence component of electrical network three-phase voltage, negative phase-sequence in setting time section before acquisition currently current decompression
The positive-sequence component of component, zero-sequence component and three-phase current, negative sequence component and zero-sequence component, then according to obtain these values and
The error-detecting model set up detects to corrigendum power error scope, obtains the range of error of more positive, such that it is able to
Benefit electricity range of error is moved back in acquisition.Can decide whether in default range of error according to moving back the range of error mending electricity, from
And may determine whether to mend the benefit of moving back that electricity carries out electricity to this decompression using currently moving back, improve three-phase and four-line electric energy meter one
Move back the reliability of benefit during phase decompression, and improve move back benefit electric power detection accuracy.
Wherein in an embodiment, the error-detecting of described more positive when setting up three-phase and four-line electric energy meter one phase decompression
Model step, as shown in Fig. 2 be the schematic flow sheet setting up error-detecting model in the embodiment of the present invention, comprising:
Step s201: the correct active power model according to being represented with each phase voltage electric current obtains correct complex power mould
Type；
Correct complex power mould is obtained according to the correct active power model of the three-phase and four-line being represented with each phase voltage electric current
Type.
Step s202: corrigendum complex power model is obtained according to corrigendum active power model；
Wherein, corrigendum active power model can be determined by " voltage substitution method ".Here corrigendum active power is three
Corrigendum active power model during phase four line electric energy meters, one phase decompression.
Step s203: corrigendum complex power model and correct complex power model are asked difference to obtain complex power differential mode
Type；
Step s204: complex power differential mode type treating excess syndrome portion is obtained active power differential mode type；
Step s205: described correct active power model, positive sequence voltage and the forward-order current being represented with phase sequence is taken advantage of
Long-pending, obtain product model；
Step s206: error-detecting model is obtained according to the ratio of described active power differential mode type and described product model.
Such as, illustrate as a example when a phase decompression in three-phase and four-line.
The three-phase and four-line correct active power model of metering being represented with phase sequence:
The correct active power model being represented with each phase voltage, electric current:
Can obtain correct complex power model:
As shown in figure 3, being voltage x current phasor schematic diagram during three-phase and four-line electric energy meter a phase decompression in the embodiment of the present invention.
In figure ψabIt isWithPhase contrast, by described voltage substitution method, such as substituted it may be assumed that replacing a phase with b phase voltage amplitude with b phase
Voltage magnitude, 120 ° of-ψabReplaceThen its corrigendum active power model is:
Obtained according to corrigendum active power model and correct complex power model:
And then can obtain complex power differential mode type:
TakeReal part must correct active power and correct active power is poor, i.e. active power differential mode type:
Represent the phase contrast of residual voltage and zero-sequence current,Represent the phase contrast of residual voltage and forward-order current,Represent the phase contrast of residual voltage and negative-sequence current,Represent the phase contrast of positive sequence voltage and forward-order current,Represent negative
Sequence voltage and the phase contrast of zero-sequence current,Represent the phase contrast of negative sequence voltage and forward-order current,Represent negative sequence voltage with
The phase contrast of negative-sequence current.
Such that it is able to obtain error-detecting model:
I.e.
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent voltage zero sequence
Degree of unbalancedness, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness.
Can determine the range of error of the readjustment electric quantity being substituted with c phase voltage during three-phase and four-line electric energy meter a phase decompression in the same manner,
And when b phase, c phase decompression readjustment electric quantity range of error.
Wherein in an embodiment, due to ε in actual electric networkv2εi2And εv0εi0Long-pending be much smaller than 1,Typically exist
More than 0.8, in denominator, binomial associated therewith is negligible.That is:
Before benefit electricity range of error is moved back in acquisition, also include error-detecting model is optimized, obtain first and optimize by mistake
Difference detection model,
Described according to described εv2、εv0、εi2、εi0、With described mistake
Difference detection model determines that corrigendum power error scope step includes: according to described εv2、εv0、εi2、εi0、Optimize error-detecting model with described first and determine corrigendum power error
Scope.
By above-mentioned optimization method, it is possible to reduce amount of calculation, improve the efficiency of detection error scope.
Further, each SIN function can value be 1 or -1 simultaneously, then obtain before moving back benefit electricity range of error, also
It is optimized including to error-detecting model, obtain the second optimization error-detecting model,
Described according to described εv2、εv0、εi2、εi0、With described mistake
Difference detection model determines that corrigendum power error scope step includes: according to described εv2、εv0、εi2、εi0、With the described second optimization
Error-detecting model determines corrigendum power error scope.
By above-mentioned optimization method, amount of calculation can be reduced further, improve the efficiency of detection error scope.
Further, because the three-phase activity coefficient of actual electric network approximates positive-sequence power factor, therefore obtain and move back benefit electricity
Before amount range of error, also include error-detecting model is optimized, obtain the 3rd optimization error-detecting model,
Wherein,Represent three-phase activity coefficient；
Methods described also includes obtaining when three phases active power and three phase reactive power in setting time section before time decompression；
Described according to described εv2、εv0、εi2、εi0、With described mistake
Difference detection model determines that corrigendum power error scope step includes:
Obtained according to described three phases active power and three phase reactive power
According to εv2、εv0、εi2、εi0、Optimize error-detecting model with the described 3rd and determine corrigendum power error scope.
By above-mentioned optimization method it is only necessary to know that voltage negative phase-sequence degree of unbalancedness, voltage zero sequence degree of unbalancedness, electric current negative phase-sequence not
Degree of balance, current zero sequence degree of unbalancedness and three-phase activity coefficient can obtain corrigendum power error scope.Thus greatly reducing meter
Calculation amount, improves the efficiency of detection error scope.
Further, in order to improve the accuracy of range of error, delete abnormal data, can be uneven by voltage negative phase-sequence respectively
Degree, voltage zero sequence degree of unbalancedness, electric current negative phase-sequence degree of unbalancedness, current zero sequence degree of unbalancedness carry out ascending order arrangement.By three phase power
Factor carries out descending.The number of every kind of parameter is multiplied with preset ratio, is obtained data value t, by ranking results
T position parameter is set to the end value that such parameter is calculated.Wherein, parameter includes voltage negative phase-sequence degree of unbalancedness, voltage zero sequence
Degree of unbalancedness, electric current negative phase-sequence degree of unbalancedness, current zero sequence degree of unbalancedness and three-phase activity coefficient.Such as, the voltage negative that will obtain
Sequence degree of unbalancedness carries out ascending order arrangement, if preset ratio is 95%, has 100 voltage negative phase-sequence degrees of unbalancedness, then in historical record
The 95th corresponding voltage negative phase-sequence degree of unbalancedness is selected to carry out calculation error scope as higher value.For another example, the three-phase that will obtain
Power factor carries out descending, if preset ratio is 95%, has 100 three-phase activity coefficients in historical record, then the row of selection
The 95th corresponding three-phase activity coefficient of name carries out calculation error scope as smaller value.This embodiment, deletes abnormal data, carries
The high accuracy of corrigendum power error scope.Simultaneously as first the data in historical record is carried out filtration treatment, then incited somebody to action
The data that filter is processed carries out Error Calculation, substantially reduces operand, improves detection efficiency.
Various technical characteristics in embodiment of above can arbitrarily be combined, as long as the combination between feature does not exist
Conflict or contradiction, but as space is limited, described one by one, the various technical characteristics in therefore above-mentioned embodiment any
It is combined falling within the scope of this disclosure.
According to said method, the present invention moves back benefit electricity error-detecting when also providing a kind of three-phase and four-line electric energy meter one phase decompression
System, as shown in figure 4, be to move back the knot mending electricity error detecting system embodiment during three-phase and four-line electric energy meter one phase decompression of the present invention
Structure schematic diagram, comprising:
Model building module 410, for the error-detecting mould of more positive when setting up three-phase and four-line electric energy meter one phase decompression
Type:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent voltage zero sequence
Degree of unbalancedness, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero sequence
The phase contrast of electric current,Represent the phase contrast of residual voltage and forward-order current,Represent the phase of residual voltage and negative-sequence current
Potential difference,Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,
Represent the phase contrast of negative sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Data acquisition module 420, for obtain when the positive-sequence component of electrical network three-phase voltage in setting time section before time decompression,
The positive-sequence component of negative sequence component, zero-sequence component and three-phase current, negative sequence component and zero-sequence component；
Parameter determination module 430, for according to the positive-sequence component of described three-phase voltage, negative sequence component, zero-sequence component and
The positive-sequence component of three-phase current, negative sequence component and zero-sequence component determine εv2、εv0、εi2、εi0、
Range of error detection module 440, for according to described εv2、εv0、εi2、εi0、 Determine corrigendum power error scope with described error-detecting model, according to corrigendum power error model
Enclose determination and move back benefit electricity range of error.
Wherein in an embodiment, described model building module, comprising:
Correct complex power model building module, for according to the correct active power model being represented with each phase voltage electric current
Obtain correct complex power model；
Corrigendum complex power model building module, for obtaining corrigendum complex power mould according to corrigendum active power model
Type；
Complex power difference model building module, for seeking difference by corrigendum complex power model with correct complex power model
Obtain complex power differential mode type；
Active power difference model building module, for obtaining active power differential mode type by complex power differential mode type treating excess syndrome portion；
Product model sets up module, for by the described correct active power model being represented with phase sequence, positive sequence voltage and just
Sequence electric current carries out product, obtains product model；
Error-detecting model building module, for obtaining according to the ratio of described active power differential mode type and described product model
Obtain error-detecting model.
Wherein in an embodiment, also include the first optimization module, before moving back benefit electricity range of error in acquisition,
Error-detecting model is optimized, obtains the first optimization error-detecting model,
Described range of error detection module, is additionally operable to according to described εv2、εv0、εi2、εi0、 Optimize error-detecting model with described first and determine corrigendum power error scope.
Wherein in an embodiment, also include the second optimization module, before moving back benefit electricity range of error in acquisition,
Error-detecting model is optimized, obtains the second optimization error-detecting model,
Described range of error detection module, is additionally operable to according to described εv2、εv0、εi2、εi0、With the described second optimization error
Detection model determines corrigendum power error scope.
Wherein in an embodiment, also include the 3rd optimization module, before moving back benefit electricity range of error in acquisition,
Error-detecting model is optimized, obtains the 3rd optimization error-detecting model,
Wherein,Represent three-phase activity coefficient；
Described data acquisition module, is additionally operable to obtain when in setting time section before time decompression, three phases active power and three-phase be no
Work(power；
Described range of error detection module, is additionally operable to:
Obtained according to described three phases active power and three phase reactive power
According to εv2、εv0、εi2、εi0、Optimize error-detecting model with the described 3rd and determine corrigendum power error scope.
The three-phase four mending electricity error detecting system and the present invention is moved back during the three-phase and four-line electric energy meter one phase decompression of the present invention
It is one-to-one for moving back benefit electricity error detection method during line electric energy meter one phase decompression, above-mentioned three-phase and four-line electric energy meter one phase decompression
When move back mend electricity error detection method embodiment in correlation technique feature and its technique effect be all applied to three-phase and four-line electric energy
Move back during table one phase decompression in benefit electricity error detecting system embodiment, will not be described here.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. move back benefit electricity error detection method during a kind of three-phase and four-line electric energy meter one phase decompression it is characterised in that including:
The error-detecting model of more positive when setting up three-phase and four-line electric energy meter one phase decompression:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent that voltage zero sequence is uneven
Degree, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero-sequence current
Phase contrast,Represent the phase contrast of residual voltage and forward-order current,Represent the phase contrast of residual voltage and negative-sequence current,
Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,Represent negative phase-sequence electricity
Pressure and the phase contrast of forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Obtain when the positive-sequence component of electrical network three-phase voltage, negative sequence component, zero-sequence component and three in setting time section before time decompression
The positive-sequence component of phase current, negative sequence component and zero-sequence component；
Divided according to the positive-sequence component of described three-phase voltage, the positive-sequence component of negative sequence component, zero-sequence component and three-phase current, negative phase-sequence
Amount and zero-sequence component determine εv2、εv0、εi2、εi0、
According to described εv2、εv0、εi2、εi0、With described error-detecting model
Determine corrigendum power error scope, determined according to corrigendum power error scope and move back benefit electricity range of error.
2. during three-phase and four-line electric energy meter one phase decompression according to claim 1, move back benefit electricity error detection method, its feature
It is, the error-detecting model step of described more positive when setting up three-phase and four-line electric energy meter one phase decompression, comprising:
Correct active power model according to being represented with each phase voltage electric current obtains correct complex power model；
Corrigendum complex power model is obtained according to corrigendum active power model；
Corrigendum complex power model and correct complex power model are asked difference to obtain complex power differential mode type；
Complex power differential mode type treating excess syndrome portion is obtained active power differential mode type；
The correct active power model, positive sequence voltage and the forward-order current that are represented with each phase voltage electric current are carried out product, acquisition is taken advantage of
Product module type；
Error-detecting model is obtained according to the ratio of described active power differential mode type and described product model.
3. during three-phase and four-line electric energy meter one phase decompression according to claim 1, move back benefit electricity error detection method, its feature
It is, obtains before moving back benefit electricity range of error, also include error-detecting model is optimized, obtain first and optimize error inspection
Survey model,
Described according to described εv2、εv0、εi2、εi0、With described error-detecting
Model determines that corrigendum power error scope step includes: according to described εv2、εv0、εi2、εi0、Optimize error-detecting model with described first and determine corrigendum power error
Scope.
4. during three-phase and four-line electric energy meter one phase decompression according to claim 1, move back benefit electricity error detection method, its feature
It is, obtains before moving back benefit electricity range of error, also include error-detecting model is optimized, obtain second and optimize error inspection
Survey model,
Described according to described εv2、εv0、εi2、εi0、With described error-detecting
Model determines that corrigendum power error scope step includes: according to described εv2、εv0、εi2、εi0、Optimize error inspection with described second
Survey model and determine corrigendum power error scope.
5. during three-phase and four-line electric energy meter one phase decompression according to claim 1, move back benefit electricity error detection method, its feature
It is, obtains before moving back benefit electricity range of error, also include error-detecting model is optimized, obtain the 3rd and optimize error inspection
Survey model,
Wherein,Represent three-phase activity coefficient；
Methods described also includes obtaining when three phases active power and three phase reactive power in setting time section before time decompression；
Described according to described εv2、εv0、εi2、εi0、With the inspection of described error
Survey model and determine that corrigendum power error scope step includes:
Obtained according to described three phases active power and three phase reactive power
According to εv2、εv0、εi2、εi0、Optimize error-detecting model with the described 3rd and determine corrigendum power error scope.
6. move back benefit electricity error detecting system during a kind of three-phase and four-line electric energy meter one phase decompression it is characterised in that including:
Model building module, for the error-detecting model of more positive when setting up three-phase and four-line electric energy meter one phase decompression:
Wherein, γ represents the range of error of more positive, εv2Represent voltage negative phase-sequence degree of unbalancedness, εv0Represent that voltage zero sequence is uneven
Degree, εi2Represent electric current negative phase-sequence degree of unbalancedness, εi0Represent current zero sequence degree of unbalancedness,Represent residual voltage and zero-sequence current
Phase contrast,Represent the phase contrast of residual voltage and forward-order current,Represent the phase contrast of residual voltage and negative-sequence current,
Represent the phase contrast of positive sequence voltage and forward-order current,Represent the phase contrast of negative sequence voltage and zero-sequence current,Represent negative phase-sequence electricity
Pressure and the phase contrast of forward-order current,Represent the phase contrast of negative sequence voltage and negative-sequence current；
Data acquisition module, for obtaining when in setting time section before time decompression, the positive-sequence component of electrical network three-phase voltage, negative phase-sequence are divided
The positive-sequence component of amount, zero-sequence component and three-phase current, negative sequence component and zero-sequence component；
Parameter determination module, for according to the positive-sequence component of described three-phase voltage, negative sequence component, zero-sequence component and three-phase current
Positive-sequence component, negative sequence component and zero-sequence component determine εv2、εv0、εi2、εi0、
Range of error detection module, for according to described εv2、εv0、εi2、εi0、
Determine corrigendum power error scope with described error-detecting model, determined according to corrigendum power error scope and move back benefit electricity error model
Enclose.
7. during three-phase and four-line electric energy meter one phase decompression according to claim 6, move back benefit electricity error detecting system, its feature
It is, described model building module, comprising:
Correct complex power model building module, for obtaining according to the correct active power model being represented with each phase voltage electric current
Correct complex power model；
Corrigendum complex power model building module, for obtaining corrigendum complex power model according to corrigendum active power model；
Complex power difference model building module, for asking difference to obtain on corrigendum complex power model and correct complex power model
Complex power differential mode type；
Active power difference model building module, for obtaining active power differential mode type by complex power differential mode type treating excess syndrome portion；
Product model sets up module, for will be represented with each phase voltage electric current correct active power model, positive sequence voltage and just
Sequence electric current carries out product, obtains product model；
Error-detecting model building module, for obtaining by mistake according to the ratio of described active power differential mode type and described product model
Difference detection model.
8. during three-phase and four-line electric energy meter one phase decompression according to claim 6, move back benefit electricity error detecting system, its feature
It is, also includes the first optimization module, before moving back benefit electricity range of error in acquisition, error-detecting model is carried out excellent
Change, obtain the first optimization error-detecting model,
Described range of error detection module, is additionally operable to according to described εv2、εv0、εi2、εi0、 Optimize error-detecting model with described first and determine corrigendum power error scope.
9. during three-phase and four-line electric energy meter one phase decompression according to claim 6, move back benefit electricity error detecting system, its feature
It is, also includes the second optimization module, before moving back benefit electricity range of error in acquisition, error-detecting model is carried out excellent
Change, obtain the second optimization error-detecting model,
Described range of error detection module, is additionally operable to according to described εv2、εv0、εi2、εi0、With the described second optimization error-detecting
Model determines corrigendum power error scope.
10. during three-phase and four-line electric energy meter one phase decompression according to claim 6, move back benefit electricity error detecting system, its feature
It is, also includes the 3rd optimization module, before moving back benefit electricity range of error in acquisition, error-detecting model is carried out excellent
Change, obtain the 3rd optimization error-detecting model,
Wherein,Represent three-phase activity coefficient；
Described data acquisition module, is additionally operable to obtain when three phases active power and the idle work(of three-phase in setting time section before time decompression
Rate；
Described range of error detection module, is additionally operable to:
Obtained according to described three phases active power and three phase reactive power
According to εv2、εv0、εi2、εi0、Optimize error-detecting model with the described 3rd and determine corrigendum power error scope.
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| CN109030964B (en) * | 2017-06-08 | 2020-06-09 | 广东电网有限责任公司中山供电局 | Unbalance degree calculation method without phase measurement in three-phase four-wire system |
| CN107632282B (en) * | 2017-08-31 | 2019-12-10 | 陈劲游 | Measurement and control method of automatic wiring detection instrument of three-phase four-wire metering device |
| CN107942113B (en) * | 2017-11-29 | 2020-01-07 | 国家电网公司 | Fault electric quantity compensation method and system |
| CN108508401B (en) * | 2018-04-20 | 2020-05-22 | 国网江苏省电力有限公司电力科学研究院 | System and method for analyzing electric energy meter voltage loss electric quantity compensation error |
| CN109212451B (en) * | 2018-09-26 | 2021-06-25 | 深圳供电局有限公司 | Voltage loss fault monitoring method and device based on three-phase four-wire meter measuring equipment |
| CN112557720A (en) * | 2020-11-12 | 2021-03-26 | 广西电网有限责任公司南宁供电局 | Emergency metering method for high-supply low-metering voltage phase-loss compensation electric quantity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063389A (en) * | 1992-06-22 | 1994-01-11 | Matsushita Electric Works Ltd | Detecting method and device for phase error of current transformer |
| CN102628892A (en) * | 2012-04-12 | 2012-08-08 | 广东电网公司中山供电局 | Method for calculating voltage-loss unusual electrical energy measurement on line and electric energy meter |
| CN102768301A (en) * | 2012-08-13 | 2012-11-07 | 广东电网公司中山供电局 | Method and device for on-line determining withdrawal and compensation electric quantity in three-phase four-wire two-phase current loss |
| CN102778605A (en) * | 2012-08-13 | 2012-11-14 | 广东电网公司中山供电局 | Method and device for carrying out online determination on given and appended electric quantity of three-phase four-wire system in process of one-phase current losing |
| CN102830280A (en) * | 2012-08-13 | 2012-12-19 | 广东电网公司中山供电局 | Method and device for online determining returned and compensated electric quantity for three-phase three-wire current loss |
| CN103499737A (en) * | 2013-09-24 | 2014-01-08 | 国家电网公司 | Method for obtaining false-wiring back-fill electric quantity of three-phase three-wire electric energy meter |
-
2014
- 2014-07-15 CN CN201410337422.8A patent/CN104133189B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063389A (en) * | 1992-06-22 | 1994-01-11 | Matsushita Electric Works Ltd | Detecting method and device for phase error of current transformer |
| CN102628892A (en) * | 2012-04-12 | 2012-08-08 | 广东电网公司中山供电局 | Method for calculating voltage-loss unusual electrical energy measurement on line and electric energy meter |
| CN102768301A (en) * | 2012-08-13 | 2012-11-07 | 广东电网公司中山供电局 | Method and device for on-line determining withdrawal and compensation electric quantity in three-phase four-wire two-phase current loss |
| CN102778605A (en) * | 2012-08-13 | 2012-11-14 | 广东电网公司中山供电局 | Method and device for carrying out online determination on given and appended electric quantity of three-phase four-wire system in process of one-phase current losing |
| CN102830280A (en) * | 2012-08-13 | 2012-12-19 | 广东电网公司中山供电局 | Method and device for online determining returned and compensated electric quantity for three-phase three-wire current loss |
| CN103499737A (en) * | 2013-09-24 | 2014-01-08 | 国家电网公司 | Method for obtaining false-wiring back-fill electric quantity of three-phase three-wire electric energy meter |
Non-Patent Citations (2)
| Title |
|---|
| 三相电能表失压故障追补电量在线计算;陈劲游等;《电力系统自动化》;20131010;第37卷(第19期);正文第100-104页 * |
| 电能计量装置故障运行时电量追补的合理化计算;戴伟;《计量与测试技术》;20111130;第38卷(第11期);正文第7-8、11页 * |
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