CN109636663A - The family of back-to-back distribution transformer becomes relation recognition method and apparatus - Google Patents
The family of back-to-back distribution transformer becomes relation recognition method and apparatus Download PDFInfo
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Abstract
The present invention relates to the families of back-to-back distribution transformer to become relation recognition method and apparatus, by calculating the voltage drop between voltage drop, the second distribution transformer voltage and its affiliated electric energy meter voltage between the first distribution transformer voltage and its affiliated electric energy meter voltage；Obtain the electric energy meter voltage of electric energy meter to be measured, assuming that one of distribution transformer of back-to-back distribution transformer belonging to electric energy meter to be measured, such as the first distribution transformer, by the voltage drop between the first distribution transformer voltage and its affiliated electric energy meter voltage, it is added with the electric energy meter voltage of electric energy meter to be measured, obtain the calculating voltage of the first distribution transformer, by the calculating voltage respectively compared with the first distribution transformer voltage and the second distribution transformer voltage, when the calculating voltage and the first distribution transformer voltage closer to when, confirm the first distribution transformer belonging to electric energy meter to be measured.Electric family of the invention becomes the recognition methods of relationship and the electric family of device becomes relation recognition accuracy height, improves the reliability that identification family becomes relationship.
Description
Technical field
The invention belongs to power system monitoring technical fields, and in particular to the family of back-to-back distribution transformer becomes relation recognition
Method and apparatus.
Background technique
State Grid Corporation of China proposed the concept of power information acquisition system from 2009, by groping for many years and building, had
The intelligent electric meter coverage rate of standby expense control function has reached 95% or more.2018, new technology was moved in conjunction with great Yun object and proposes new one
Alternative power utilization information collection system, a new generation require higher frequency acquisition and faster data-handling capacity with adopting.Wherein,
Application is required to clear and definite intelligence when the line loss analyzing of distribution transformer low-pressure side, remote bill control, remote recharge, clock school etc.
The distribution transformer of electric energy meter belongs to, i.e., the family between user side electric energy meter and distribution transformer becomes relationship.
Since power line carrier is in power line transmitting data, and power line itself has clearly distribution transformer ownership,
That is the supply path of distribution transformer and the communication path of power line carrier is consistent, and therefore, is identified by power line carrier
The method that family becomes relationship has inherent advantage.But the family for being not particularly suited for back-to-back distribution transformer becomes the identification of relationship,
Reality layout on, there are two or more distribution transformers be installed together or near, form back-to-back distribution transformer,
The region of back-to-back distribution transformer is " back-to-back " platform area.
By taking two distribution transformers form back-to-back distribution transformer as an example, since the low-pressure side of two distribution transformers is total
With zero curve, carrier signal transfers signals to adjacent distribution transformer by ground wire, leads to " zero curve crosstalk altogether ".Therefore, it " leans against
The characteristics of back " platform area is that the communication domain of platform area supply domain and carrier wave is inconsistent, directly cannot determine load using carrier communication
Platform area ownership.Existing area's identification technology is usually that power line carrier is combined with station user identification apparatus, area user identification zone
Instrument principle is the phase sequence identification method based on pulse current, and this method drawback is platform area identifier higher cost, needs to pacify
Adjustment examination, heavy workload, the electric current that when use generates are up to peace more than 100, may cause some safety problems for being difficult to estimate,
Reliability is low.
Summary of the invention
The object of the present invention is to provide the families of back-to-back distribution transformer to become relation recognition method and apparatus, existing for solving
The low problem of the identification certainty for thering is technology to become relationship to family.
In order to solve the above technical problems, the present invention proposes that a kind of family of back-to-back distribution transformer becomes relation recognition method,
The following steps are included:
1) according to the historical data of back-to-back distribution transformer, back-to-back distribution transformer include the first distribution transformer and
Second distribution transformer extracts the number of the first distribution transformer voltage and its affiliated electric energy meter voltage in the historical data
According to the data of the second distribution transformer voltage and its affiliated electric energy meter voltage in the historical data calculate the first distribution and become
Voltage drop between depressor voltage and its affiliated electric energy meter voltage calculates the second distribution transformer voltage and its affiliated electrical energy meter electricity
Voltage drop between pressure；
2) the electric energy meter voltage of electric energy meter to be measured is obtained, it is assumed that the first distribution transformer belonging to electric energy meter to be measured, by first
Voltage drop between distribution transformer voltage and its affiliated electric energy meter voltage is added with the electric energy meter voltage of electric energy meter to be measured, obtains
To the calculating voltage of the first distribution transformer；
3) by the calculating voltage of the first distribution transformer respectively with the first distribution transformer voltage and second in historical data
Distribution transformer voltage is compared, when the calculating voltage of the first distribution transformer and the first distribution transformer voltage are closer
When, confirm the first distribution transformer belonging to electric energy meter to be measured.
In order to solve the above technical problems, the present invention goes back while proposing that a kind of family of back-to-back distribution transformer becomes relation recognition
Device, including memory and processor, and the computer program that storage is run on a memory and on a processor, memory
It is connected with processor, memory is used to store the historical data of each distribution transformer, when processor executes the computer program
Realize above step 1), step 2) and step 3).
The present invention calculates the first distribution transformer voltage and its institute by the historical data of the back-to-back distribution transformer of arrangement
Belong to the voltage drop between electric energy meter voltage, calculates the voltage between the second distribution transformer voltage and its affiliated electric energy meter voltage
Drop；Obtain the electric energy meter voltage of electric energy meter to be measured, it is assumed that one of them of back-to-back distribution transformer belonging to electric energy meter to be measured is matched
Piezoelectric transformer, such as the first distribution transformer, by the voltage between the first distribution transformer voltage and its affiliated electric energy meter voltage
Drop, is added with the electric energy meter voltage of electric energy meter to be measured, obtains the calculating voltage of the first distribution transformer, which is distinguished
Compared with the first distribution transformer voltage and the second distribution transformer voltage, when the calculating voltage and the first distribution transformer voltage
When closer, the first distribution transformer belonging to electric energy meter to be measured is confirmed.Electric family of the invention becomes recognition methods and the device of relationship
Electric family become that relation recognition accuracy is high, improve the reliability that identification family becomes relationship.
When the calculating voltage of the first distribution transformer and the second distribution transformer voltage closer to when, to confirm electric energy to be measured
It is the second distribution transformer belonging to table, by the voltage drop between the second distribution transformer voltage and its affiliated electric energy meter voltage,
It is added with the electric energy meter voltage of electric energy meter to be measured, obtains the calculating voltage of the second distribution transformer；
The calculating voltage of second distribution transformer is matched with the first distribution transformer voltage and second in historical data respectively
Piezoelectric transformer voltage is compared, when the calculating voltage of the second distribution transformer and the second distribution transformer voltage closer to when,
Confirm the second distribution transformer belonging to electric energy meter to be measured.
To improve the reliability that family becomes relation recognition, in step 1), according to the record moment of historical data, when calculating identical
The voltage drop between the first distribution transformer voltage and its affiliated electric energy meter voltage is inscribed, lower second distribution change in the same time is calculated mutually
Voltage drop between depressor voltage and its affiliated electric energy meter voltage；
It further include the detection moment for obtaining the electric energy meter voltage of electric energy meter to be measured, when assuming that electric energy meter to be measured in step 2)
When affiliated first distribution transformer, inquiry obtains inscribing the first distribution transformer and its institute when the corresponding record of the detection moment
Belong to the voltage drop between electric energy meter voltage, and be added with electric energy meter voltage to be measured, obtains the first distribution under the detection moment and become
The calculating voltage of depressor；
It is in step 3), the calculating voltage of the first distribution transformer under the detection moment is corresponding with historical data respectively
The first distribution transformer voltage is inscribed when record and the second distribution transformer voltage is compared, when first under the detection moment
Inscribed when the calculating voltage of distribution transformer and corresponding record the first distribution transformer voltage closer to when, confirm electric energy meter to be measured
Affiliated first distribution transformer.
The second distribution is inscribed when the calculating voltage of the first distribution transformer under the detection moment and corresponding record to become
Depressor voltage closer to when, it is assumed that the second distribution transformer belonging to electric energy meter to be measured, inquiry obtain the corresponding note of the detection moment
The voltage drop between the second distribution transformer voltage and its affiliated electric energy meter voltage, and the electric energy with electric energy meter to be measured are inscribed when record
Table voltage is added, and obtains the calculating voltage of the second distribution transformer under the detection moment；
By the calculating voltage of the second distribution transformer under the detection moment respectively with the corresponding record moment in historical data
Lower first distribution transformer voltage and the second distribution transformer voltage are compared, when the second distribution transformer under the detection moment
Inscribed when the calculating voltage of device and corresponding record the second distribution transformer voltage closer to when, confirm second belonging to electric energy meter to be measured
Distribution transformer.
Under improving the distribution transformer voltage of the affiliated distribution transformer of electric energy meter to be measured at various moments and phase in the same time
The reliability that each distribution transformer voltage is compared, using the distribution of the affiliated distribution transformer of electric energy meter to be measured at various moments
Transformer voltage with mutually in the same time under each distribution transformer mode for asking variance to be compared, choose the smallest distribution transformer of variance
Device is as distribution transformer belonging to electric energy meter to be measured, to obtain the ownership platform area of electric energy meter to be measured.Wherein, it is compared
Calculating formula is as follows:
S2=(U1+bx1-Ui1)2+(U2+bx2-Ui2)2+(U3+bx3-Ui3)2+...+(Un+bxn-Uin)2
In formula, S2Indicate the variance acquired, U1、U2、U3、…、UnElectric energy meter to be measured is respectively indicated respectively in instance sample point
1,2 ..., the electric energy meter voltage under n, b1、b2、b3、…、bnRespectively indicate electric energy meter to be measured respectively instance sample point 1,2 ...,
Voltage drop under n, Ui1、Ui2、Ui3、…、UinRespectively indicate distribution transformer that number is i respectively instance sample point 1,2 ...,
The distribution transformer of distribution transformer voltage under n, number i=1 indicates the first distribution transformer, the distribution transformer of number i=2
Device indicates the second distribution transformer；
As i=1 and the variance minimum acquired, the calculating of the first distribution transformer under the detection moment is determined
It is closer that the first distribution transformer voltage is inscribed when voltage is with corresponding record；As i=2 and the variance minimum acquired, sentence
The second distribution transformer voltage is inscribed more when the calculating voltage and corresponding record of the second distribution transformer under the fixed detection moment
It is close.
Detailed description of the invention
Fig. 1 is that the family of back-to-back distribution transformer of the invention becomes relation recognition method flow diagram.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
A kind of family of back-to-back distribution transformer of the invention becomes relation recognition method, as shown in Figure 1, including following step
It is rapid:
According to the historical data of distribution transformer, back-to-back distribution transformer includes the first distribution transformer and the second distribution
Transformer extracts the data of the first distribution transformer voltage and its affiliated electric energy meter voltage in historical data, in historical data
The second distribution transformer voltage and its affiliated electric energy meter voltage data.
According to the record moment of historical data, lower first distribution transformer voltage and its affiliated electric energy meter in the same time are calculated mutually
Voltage drop between voltage calculates mutually lower voltage between second distribution transformer voltage and its affiliated electric energy meter voltage in the same time
Drop.
Obtain the detection moment of the electric energy meter voltage of electric energy meter to be measured and the electric energy meter voltage of electric energy meter to be measured, it is assumed that
First distribution transformer belonging to electric energy meter to be measured, inquiry obtain inscribing when the corresponding record of detection moment the first distribution transformer and
Voltage drop between its affiliated electric energy meter voltage, and be added with electric energy meter voltage to be measured, it obtains the first distribution under detection moment and becomes
The calculating voltage of depressor.
Inscribed when will test the calculating voltage of the first distribution transformer respectively with is inscribed in historical data when corresponding record
One distribution transformer voltage and the second distribution transformer voltage are compared, when the calculating of the first distribution transformer under detection moment
Voltage and when corresponding record inscribe the first distribution transformer voltage closer to when, confirm the first distribution transformer belonging to electric energy meter to be measured
Device.
The second distribution transformer is inscribed when the calculating voltage of the first distribution transformer under detection moment and corresponding record
Voltage closer to when, the second distribution transformer belonging to electric energy meter to be measured is determined, to confirm the conclusion, it is assumed that belonging to electric energy meter to be measured
Second distribution transformer, inquiry obtain inscribing the second distribution transformer voltage and its affiliated electric energy meter when detection moment corresponding record
Voltage drop between voltage, and be added with the electric energy meter voltage of electric energy meter to be measured, obtain the second distribution transformer under detection moment
Calculating voltage.
Inscribed when will test the calculating voltage of the second distribution transformer respectively with is inscribed in historical data when corresponding record
One distribution transformer voltage and the second distribution transformer voltage are compared, when the calculating of the second distribution transformer under detection moment
Voltage and when corresponding record inscribe the second distribution transformer voltage closer to when, confirm the second distribution transformer belonging to electric energy meter to be measured
Device.
Specifically, the calculating formula being compared is as follows:
S2=(U1+b1-Ui1)2+(U2+b2-Ui2)2+(U3+b3-Ui3)2+...+(Un+bn-Uin)2
In formula, S2Indicate the variance acquired, U1、U2、U3、…、UnRespectively indicate what electric energy meter to be measured was carved when detecting respectively
Sampled point 1,2 ..., the electric energy meter voltage under n, b1、b2、b3、…、bnElectric energy meter to be measured is respectively indicated respectively in corresponding record
The sampled point 1 at quarter, 2 ..., the voltage drop under n, Ui1、Ui2、Ui3、…、UinThe distribution transformer that number is i is respectively indicated to exist respectively
The sampled point 1 at corresponding record moment, 2 ..., the distribution transformer voltage under n, the distribution transformer of number i=1 indicates that first matches
The distribution transformer of piezoelectric transformer, number i=2 indicates the second distribution transformer.
When i=1 and acquire variance minimum when, determine detection moment under the first distribution transformer calculating voltage with it is right
It is closer that the first distribution transformer voltage is inscribed when should record；When i=2 and acquire variance minimum when, determine detection moment under
It is closer that the second distribution transformer voltage is inscribed when the calculating voltage of second distribution transformer is with corresponding record.
Be above by the way of asking variance to be compared, can also be by electric energy meter institute to be measured as other embodiments
Belong to the distribution transformer voltage of distribution transformer at various moments and mutually the lower distribution transformer voltage for being i of numbering is asked in the same time
Difference obtains the difference at each moment, then by the difference value at each moment, obtains being compared with the distribution transformer that number is i
Compared with fiducial value, then equally choose the smallest distribution transformer of fiducial value as distribution transformer belonging to electric energy meter to be measured.
Above-mentioned is that family becomes relation recognition method preferred forms, as other embodiments, is arranging back-to-back distribution
When the historical data of transformer, without obtaining the first distribution transformer voltage at each moment and its number of affiliated electric energy meter voltage
According to and each moment the second distribution transformer voltage and its affiliated electric energy meter voltage data, at least obtain one first
The data of distribution transformer voltage and its affiliated electric energy meter voltage, it is corresponding, at least obtain a second distribution transformer voltage
And its data of affiliated electric energy meter voltage, a voltage drop is only obtained when calculating voltage drop.
For example, after obtaining the electric energy meter voltage of electric energy meter to be measured and assuming a distribution transformer belonging to electric energy meter to be measured,
Such as the first distribution transformer, by a voltage drop between the first distribution transformer voltage and its affiliated electric energy meter voltage, with to
The electric energy meter voltage for surveying electric energy meter is added, and obtains the calculating voltage of the first distribution transformer.By the calculating of the first distribution transformer
Voltage is compared with the first distribution transformer voltage in historical data and the second distribution transformer voltage respectively, when the first distribution
The calculating voltage of transformer and the first distribution transformer voltage closer to when, confirm the first distribution transformer belonging to electric energy meter to be measured
Device.
When the calculating voltage of the first distribution transformer and the second distribution transformer voltage closer to when, it is similarly assumed that be measured
Second distribution transformer belonging to electric energy meter, by a voltage between the second distribution transformer voltage and its affiliated electric energy meter voltage
Drop, be added with the electric energy meter voltage of electric energy meter to be measured, obtain the calculating voltage of the second distribution transformer, then respectively with the first distribution
Transformer voltage and the second distribution transformer voltage are compared, and confirm the second distribution transformer belonging to electric energy meter to be measured.
It is the family change relation recognition method by taking two distribution transformers form back-to-back distribution transformer as an example above, when two
When a above distribution transformer forms back-to-back distribution transformer, family becomes relation recognition method with above-mentioned two distribution transformer
The family change relation recognition principle that device forms back-to-back distribution transformer is identical, and which is not described herein again.
The present invention goes back while proposing that a kind of family of back-to-back distribution transformer becomes relation recognition device, including memory and place
Device is managed, and the computer program that storage is run on a memory and on a processor, memory are connected with processor, memory
For storing the historical data of each distribution transformer, processor performs the steps of when executing computer program
1) according to the historical data of back-to-back distribution transformer, back-to-back distribution transformer include the first distribution transformer and
Second distribution transformer extracts the data of the first distribution transformer voltage and its affiliated electric energy meter voltage in historical data, goes through
The data of the second distribution transformer voltage and its affiliated electric energy meter voltage in history data, calculate the first distribution transformer voltage and
Voltage drop between its affiliated electric energy meter voltage calculates the electricity between the second distribution transformer voltage and its affiliated electric energy meter voltage
Pressure drop；
2) the electric energy meter voltage of electric energy meter to be measured is obtained, it is assumed that the first distribution transformer belonging to electric energy meter to be measured, by first
Voltage drop between distribution transformer voltage and its affiliated electric energy meter voltage is added with the electric energy meter voltage of electric energy meter to be measured, obtains
To the calculating voltage of the first distribution transformer；
3) by the calculating voltage of the first distribution transformer respectively with the first distribution transformer voltage and second in historical data
Distribution transformer voltage is compared, when the calculating voltage of the first distribution transformer and the first distribution transformer voltage are closer
When, confirm the first distribution transformer belonging to electric energy meter to be measured.
Signified family becomes relation recognition device in above-described embodiment, is actually based on a kind of meter of the method for the present invention process
Calculation machine solution, i.e., a kind of software architecture, can be applied in computer, and above-mentioned apparatus is corresponding with method flow
Treatment progress.Since sufficiently clear is complete for the introduction to the above method, therefore no longer it is described in detail.
Claims (10)
1. a kind of family of back-to-back distribution transformer becomes relation recognition method, which comprises the following steps:
1) according to the historical data of back-to-back distribution transformer, back-to-back distribution transformer includes the first distribution transformer and second
Distribution transformer extracts the data of the first distribution transformer voltage and its affiliated electric energy meter voltage in the historical data, institute
The data of the second distribution transformer voltage and its affiliated electric energy meter voltage in historical data are stated, the first distribution transformer electricity is calculated
Voltage drop between pressure and its affiliated electric energy meter voltage calculates between the second distribution transformer voltage and its affiliated electric energy meter voltage
Voltage drop；
2) the electric energy meter voltage of electric energy meter to be measured is obtained, it is assumed that the first distribution transformer belonging to electric energy meter to be measured, by the first distribution
Voltage drop between transformer voltage and its affiliated electric energy meter voltage is added with the electric energy meter voltage of electric energy meter to be measured, obtains
The calculating voltage of one distribution transformer；
3) by the calculating voltage of the first distribution transformer respectively with the first distribution transformer voltage and the second distribution in historical data
Transformer voltage is compared, when the calculating voltage of the first distribution transformer and the first distribution transformer voltage closer to when, really
Recognize the first distribution transformer belonging to electric energy meter to be measured.
2. the family of back-to-back distribution transformer according to claim 1 becomes relation recognition method, which is characterized in that when first
The calculating voltage of distribution transformer and the second distribution transformer voltage closer to when, it is assumed that the second distribution belonging to electric energy meter to be measured becomes
Depressor, the electric energy meter by the voltage drop between the second distribution transformer voltage and its affiliated electric energy meter voltage, with electric energy meter to be measured
Voltage is added, and obtains the calculating voltage of the second distribution transformer；
The calculating voltage of second distribution transformer is become with the first distribution transformer voltage in historical data and the second distribution respectively
Depressor voltage is compared, when the calculating voltage of the second distribution transformer and the second distribution transformer voltage closer to when, confirmation
Second distribution transformer belonging to electric energy meter to be measured.
3. the family of back-to-back distribution transformer according to claim 2 becomes relation recognition method, which is characterized in that step 1)
In, according to the record moment of historical data, calculate mutually lower first distribution transformer voltage and its affiliated electric energy meter voltage in the same time
Between voltage drop, calculate mutually the voltage drop between lower second distribution transformer voltage and its affiliated electric energy meter voltage in the same time；
It further include the detection moment for obtaining the electric energy meter voltage of electric energy meter to be measured, when assuming that belonging to electric energy meter to be measured in step 2)
When the first distribution transformer, inquiry obtains inscribing the first distribution transformer and its affiliated electricity when the corresponding record of the detection moment
Voltage drop between energy table voltage, and be added with electric energy meter voltage to be measured, obtain the first distribution transformer under the detection moment
Calculating voltage；
In step 3), by the calculating voltage of the first distribution transformer under the detection moment respectively with corresponding record in historical data
When inscribe the first distribution transformer voltage and the second distribution transformer voltage is compared, when the first distribution under the detection moment
Inscribed when the calculating voltage of transformer and corresponding record the first distribution transformer voltage closer to when, confirm belonging to electric energy meter to be measured
First distribution transformer.
4. the family of back-to-back distribution transformer according to claim 3 becomes relation recognition method, which is characterized in that when described
It is closer that the second distribution transformer voltage is inscribed when the calculating voltage of the first distribution transformer under detection moment is with corresponding record
When, it is assumed that the second distribution transformer belonging to electric energy meter to be measured, inquiry, which obtains inscribing second when the detection moment corresponding record, matches
Voltage drop between piezoelectric transformer voltage and its affiliated electric energy meter voltage, and be added with the electric energy meter voltage of electric energy meter to be measured, it obtains
The calculating voltage of second distribution transformer under to the detection moment；
By the calculating voltage of the second distribution transformer under the detection moment respectively with is inscribed in historical data when corresponding record
One distribution transformer voltage and the second distribution transformer voltage are compared, when the second distribution transformer under the detection moment
Calculate voltage and when corresponding record inscribe the second distribution transformer voltage closer to when, confirm the second distribution belonging to electric energy meter to be measured
Transformer.
5. the family of back-to-back distribution transformer according to claim 3 or 4 becomes relation recognition method, which is characterized in that into
The calculating formula that row compares is as follows:
S2=(U1+b1-Ui1)2+(U2+b2-Ui2)2+(U3+b3-Ui3)2+...+(Un+bn-Uin)2
In formula, S2Indicate the variance acquired, U1、U2、U3、…、UnRespectively indicate the sampling that electric energy meter to be measured is carved when detecting respectively
Point 1,2 ..., the electric energy meter voltage under n, b1、b2、b3、…、bnElectric energy meter to be measured is respectively indicated respectively at the corresponding record moment
Sampled point 1,2 ..., the voltage drop under n, Ui1、Ui2、Ui3、…、UinIt respectively indicates and numbers the distribution transformer for being i respectively in correspondence
Record the moment sampled point 1,2 ..., the distribution transformer voltage under n, the distribution transformer of number i=1 indicates that the first distribution becomes
The distribution transformer of depressor, number i=2 indicates the second distribution transformer；
As i=1 and the variance minimum acquired, the calculating voltage of the first distribution transformer under the detection moment is determined
It is closer that the first distribution transformer voltage is inscribed when with corresponding record；As i=2 and the variance minimum acquired, institute is determined
It is closer that the second distribution transformer voltage is inscribed when stating the calculating voltage of the second distribution transformer under detection moment with corresponding record.
6. the family of back-to-back distribution transformer a kind of becomes relation recognition device, which is characterized in that including memory and processor, with
And the computer program that storage is run on a memory and on a processor, memory are connected with processor, memory is for depositing
The historical data of back-to-back distribution transformer is stored up, back-to-back distribution transformer includes the first distribution transformer and the second distribution transformer
Device, processor perform the steps of when executing the computer program
1) according to the historical data of back-to-back distribution transformer, back-to-back distribution transformer includes the first distribution transformer and second
Distribution transformer extracts the data of the first distribution transformer voltage and its affiliated electric energy meter voltage in the historical data, institute
The data of the second distribution transformer voltage and its affiliated electric energy meter voltage in historical data are stated, the first distribution transformer electricity is calculated
Voltage drop between pressure and its affiliated electric energy meter voltage calculates between the second distribution transformer voltage and its affiliated electric energy meter voltage
Voltage drop；
2) the electric energy meter voltage of electric energy meter to be measured is obtained, it is assumed that the first distribution transformer belonging to electric energy meter to be measured, by the first distribution
Voltage drop between transformer voltage and its affiliated electric energy meter voltage is added with the electric energy meter voltage of electric energy meter to be measured, obtains
The calculating voltage of one distribution transformer；
3) by the calculating voltage of the first distribution transformer respectively with the first distribution transformer voltage and the second distribution in historical data
Transformer voltage is compared, when the calculating voltage of the first distribution transformer and the first distribution transformer voltage closer to when, really
Recognize the first distribution transformer belonging to electric energy meter to be measured.
7. the family of back-to-back distribution transformer according to claim 6 becomes relation recognition device, which is characterized in that when first
The calculating voltage of distribution transformer and the second distribution transformer voltage closer to when, it is assumed that the second distribution belonging to electric energy meter to be measured becomes
Depressor, the electric energy meter by the voltage drop between the second distribution transformer voltage and its affiliated electric energy meter voltage, with electric energy meter to be measured
Voltage is added, and obtains the calculating voltage of the second distribution transformer；
The calculating voltage of second distribution transformer is become with the first distribution transformer voltage in historical data and the second distribution respectively
Depressor voltage is compared, when the calculating voltage of the second distribution transformer and the second distribution transformer voltage closer to when, confirmation
Second distribution transformer belonging to electric energy meter to be measured.
8. the family of back-to-back distribution transformer according to claim 7 becomes relation recognition device, which is characterized in that step 1)
In, according to the record moment of historical data, calculate mutually lower first distribution transformer voltage and its affiliated electric energy meter voltage in the same time
Between voltage drop, calculate mutually the voltage drop between lower second distribution transformer voltage and its affiliated electric energy meter voltage in the same time；
It further include the detection moment for obtaining the electric energy meter voltage of electric energy meter to be measured, when assuming that belonging to electric energy meter to be measured in step 2)
When the first distribution transformer, inquiry obtains inscribing the first distribution transformer and its affiliated electricity when the corresponding record of the detection moment
Voltage drop between energy table voltage, and be added with electric energy meter voltage to be measured, obtain the first distribution transformer under the detection moment
Calculating voltage；
In step 3), by the calculating voltage of the first distribution transformer under the detection moment respectively with corresponding record in historical data
When inscribe the first distribution transformer voltage and the second distribution transformer voltage is compared, when the first distribution under the detection moment
Inscribed when the calculating voltage of transformer and corresponding record the first distribution transformer voltage closer to when, confirm belonging to electric energy meter to be measured
First distribution transformer.
9. the family of back-to-back distribution transformer according to claim 8 becomes relation recognition device, which is characterized in that when described
It is closer that the second distribution transformer voltage is inscribed when the calculating voltage of the first distribution transformer under detection moment is with corresponding record
When, it is assumed that the second distribution transformer belonging to electric energy meter to be measured, inquiry, which obtains inscribing second when the detection moment corresponding record, matches
Voltage drop between piezoelectric transformer voltage and its affiliated electric energy meter voltage, and be added with the electric energy meter voltage of electric energy meter to be measured, it obtains
The calculating voltage of second distribution transformer under to the detection moment；
By the calculating voltage of the second distribution transformer under the detection moment respectively with is inscribed in historical data when corresponding record
One distribution transformer voltage and the second distribution transformer voltage are compared, when the second distribution transformer under the detection moment
Calculate voltage and when corresponding record inscribe the second distribution transformer voltage closer to when, confirm the second distribution belonging to electric energy meter to be measured
Transformer.
10. the family of back-to-back distribution transformer according to claim 8 or claim 9 becomes relation recognition device, which is characterized in that into
The calculating formula that row compares is as follows:
S2=(U1+b1-Ui1)2+(U2+b2-Ui2)2+(U3+b3-Ui3)2+...+(Un+bn-Uin)2
In formula, S2Indicate the variance acquired, U1、U2、U3、…、UnRespectively indicate the sampling that electric energy meter to be measured is carved when detecting respectively
Point 1,2 ..., the electric energy meter voltage under n, b1、b2、b3、…、bnElectric energy meter to be measured is respectively indicated respectively at the corresponding record moment
Sampled point 1,2 ..., the voltage drop under n, Ui1、Ui2、Ui3、…、UinIt respectively indicates and numbers the distribution transformer for being i respectively in correspondence
Record the moment sampled point 1,2 ..., the distribution transformer voltage under n, the distribution transformer of number i=1 indicates that the first distribution becomes
The distribution transformer of depressor, number i=2 indicates the second distribution transformer；
As i=1 and the variance minimum acquired, determine the first distribution transformer voltage under the detection moment with it is right
It is closer that the first distribution transformer voltage is inscribed when should record；As i=2 and the variance minimum acquired, the inspection is determined
It is closer that the second distribution transformer voltage is inscribed when the second distribution transformer voltage inscribed when survey is with corresponding record.
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