CN110221161A - A kind of family of offset voltage, change, phase relation determine method and device - Google Patents
A kind of family of offset voltage, change, phase relation determine method and device Download PDFInfo
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- CN110221161A CN110221161A CN201910677001.2A CN201910677001A CN110221161A CN 110221161 A CN110221161 A CN 110221161A CN 201910677001 A CN201910677001 A CN 201910677001A CN 110221161 A CN110221161 A CN 110221161A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
Abstract
The application discloses the family of offset voltage a kind of, change, phase relation determine method and device, and the method includes obtaining unknown family, change, the first measurement voltage magnitude and the first measurement voltage phase angle at phase triadic relation's gauge table；Obtain distribution transformer exit A phase, B phase or C phase voltage phase angle；The output voltage of controllable voltage source is adjusted, the controllable voltage source is connect with the neutral point of the distribution transformer, and the output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；Obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and the second measurement voltage phase angle；Calculate the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；Family, change, phase relation are determined according to the voltage amplitude value difference and the phase angle difference.The application is in addition to can effectively determine that family becomes relationship, moreover it is possible to while determining the separate of unknown ammeter, the application principle is simple and reliable, can effectively solve the problem that the covert relationship in family.
Description
Technical field
This application involves family, change, phase triadic relations to determine technical field, in particular to a kind of family of offset voltage, change, phase
Relationship determines method and device.
Background technique
Distribution transformer is the core devices of intelligent distribution network, and the family of low-pressure side, change, phase triadic relation look forward to power supply at county level
Industry operation and maintenance and equipment operation have a major impact, and with urban development, underground cable increases, and user's concentration is increasingly
Height, a station power distribution transformer may connect thousands of more users, and in addition small range is also likely to be present more distribution transformings, be easy to cause and matches
The family of change, change, phase triadic relation's mistake.The family of distribution transformer, change, phase triadic relation's mistake, influence the accuracy of line loss, lose
The directive significance for going line loss leads to the data that gauge table is not acquired when measuring remote meter reading, increases the work of artificial live meter reading
It measures, increases human input, family, change, phase triadic relation mistake also influence archives material accuracy.
At present there are also for solve distribution transformer family become relationship device and method, be based primarily upon carrier communication and
Pulse signal technology, but carrier signal receives extraneous influence greatly, is easy to be interfered；And pulse signal is believed in remote transmission
Number decaying is serious, and the requirement to signal detection is high.Original technical method also lack determining unknown subscriber and it is separate between pass
System.
Summary of the invention
A kind of family for being designed to provide offset voltage of the application, change, phase relation determine method and device, to solve to lack
Less determine unknown subscriber and it is separate between relationship the problem of.
On the one hand, according to an embodiment of the present application, the family of offset voltage a kind of is provided, change, phase relation determine method, wrap
It includes:
Obtain unknown family, change, the first measurement voltage magnitude at phase triadic relation's gauge table and the first measurement voltage phase angle；
Obtain distribution transformer exit A phase, B phase or C phase voltage phase angle；
The output voltage of controllable voltage source is adjusted, the controllable voltage source is connect with the neutral point of the distribution transformer,
The output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and the second measurement voltage
Phase angle；
Calculate the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；
Family, change, phase relation are determined according to the voltage amplitude value difference and the phase angle difference.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
In the same direction, described the step of determining family, change, phase relation according to voltage amplitude value difference and phase angle difference, includes:
If the voltage amplitude value difference is greater than zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family connects
It connects in the A phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference is greater than zero, and the unknown covert relationship gauge table in family connects
It connects in the B phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, less than zero, the unknown covert relationship gauge table in family connects the phase angle difference
It connects in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family is not
It is connected on the distribution transformer.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
Reversely, described the step of determining family, change, phase relation according to voltage amplitude value difference and phase angle difference, includes:
If the voltage amplitude value difference, less than zero, the phase angle difference is equal to zero, the covert relationship metering in the unknown family is determined
Table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference determines the covert relationship metering in the unknown family less than zero
Table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference is greater than zero, determines the covert relationship metering in the unknown family
Table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is not attached on the distribution transformer.
Further, the size of the output voltage is 5-15V.
On the other hand, according to an embodiment of the present application, family, the change, phase relation determining device of a kind of offset voltage are provided, wrapped
It includes:
First acquisition unit, for obtain unknown family, change, the first measurement voltage magnitude at phase triadic relation's gauge table and
First measurement voltage phase angle；
Second acquisition unit, for obtaining distribution transformer exit A phase, B phase or C phase voltage phase angle；
Unit is adjusted, for adjusting the output voltage of controllable voltage source, the controllable voltage source and the distribution transformer
Neutral point connection, the output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Third acquiring unit, for obtaining the unknown family, change, the second measurement voltage amplitude at phase triadic relation's gauge table
Value and the second measurement voltage phase angle；
Computing unit, for calculating the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；
Determination unit, for determining family, change, phase relation according to the voltage amplitude value difference and the phase angle difference.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
In the same direction, the determination unit, is also used to:
If the voltage amplitude value difference is greater than zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference is greater than zero, the covert relationship metering in the unknown family is determined
Table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference determines the covert relationship metering in the unknown family less than zero
Table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is not attached on the distribution transformer.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
Reversely, the determination unit, is also used to:
If the voltage amplitude value difference, less than zero, the phase angle difference is equal to zero, the covert relationship metering in the unknown family is determined
Table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference determines the covert relationship metering in the unknown family less than zero
Table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference is greater than zero, determines the covert relationship metering in the unknown family
Table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is not attached on the distribution transformer.
From the above technical scheme, the embodiment of the present application provides the family of offset voltage a kind of, change, phase relation determine method
And device, the method includes the first measurement voltage magnitudes and first at the unknown family of acquisition, change, phase triadic relation's gauge table to survey
Measure voltage phase angle；Obtain distribution transformer exit A phase, B phase or C phase voltage phase angle；The output voltage of controllable voltage source is adjusted,
The controllable voltage source is connect with the neutral point of the distribution transformer, the output voltage phase angle and A phase, B phase or C phase voltage
Phase angle size is identical；Obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and the second measurement
Voltage phase angle；Calculate the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；According to the voltage magnitude
The poor and described phase angle difference determines family, change, phase relation.The application is in addition to can effectively determine that family becomes relationship, moreover it is possible to while determination is unknown
Ammeter it is separate, the application principle is simple and reliable, can effectively solve the problem that the covert relationship in family.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 determines the structural representation of method for a kind of family of offset voltage shown in the embodiment of the present application, change, phase relation
Figure；
Fig. 2 determines the flow chart of method for a kind of family of offset voltage shown in the embodiment of the present application, change, phase relation.
Fig. 3 be the family of a kind of offset voltage shown in the embodiment of the present application, change, phase relation determining device structural block diagram.
It illustrates:
Wherein, 1- distribution transformer, 2- controllable voltage source, 3- gauge table.
Specific embodiment
Refering to fig. 1 and Fig. 2, the embodiment of the present application provides the family of offset voltage a kind of, change, phase relation determine method, comprising:
Step S1, unknown family, change, the first measurement voltage magnitude U at phase triadic relation's gauge table and the first measurement are obtained
Voltage phase angle
Step S2, distribution transformer exit A phase, B phase or C phase voltage phase angle are obtained；
Step S3, the output voltage of controllable voltage source, the neutrality of the controllable voltage source and the distribution transformer are adjusted
Point connection, the output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Step S4, the unknown family, change, the second measurement voltage magnitude U ' and second at phase triadic relation's gauge table are obtained
Measure voltage phase angle
Step S5, the voltage amplitude value difference △ U and phase angle difference of the second measurement voltage and the first measurement voltage are calculated
△ U=U-U ',
Step S6, according to the voltage amplitude value difference △ U and the phase angle differenceDetermine family, change, phase relation.
The application is in addition to can effectively determine that family becomes relationship, moreover it is possible to while determining the separate of unknown ammeter, the application principle letter
It is single reliable, it can effectively solve the problem that the covert relationship in family.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
In the same direction, described according to voltage amplitude value difference △ U and phase angle differenceThe step of determining family, change, phase relation include:
If the voltage amplitude value difference △ U is greater than zero, the phase angle differenceEqual to zero, the unknown covert relationship meter in family
Scale is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference △ U is less than zero, the phase angle differenceGreater than zero, the unknown covert relationship meter in family
Scale is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference △ U is less than zero, the phase angle differenceLess than zero, the unknown covert relationship meter in family
Scale is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference △ U is equal to zero, the phase angle differenceEqual to zero, the unknown covert relationship meter in family
Scale is not attached on the distribution transformer.
Wherein, difference in magnitude △ U and phase angle differenceIt calculates as follows:
Normal operation system, advanced or 120 ° of lag difference is little mutually for phase angle, so remembering controllable voltage source respectively
Before injecting voltage, each phase voltage is respectively 0 ° of Ua ∠, 240 ° of ∠ of Ub=α Ua, 120 ° of Uc=β Ua ∠ (wherein, α, β be respectively Ub,
The ratio of Uc and Ua amplitude)；
The voltage swing of controllable voltage source control output is Uθ, phase angle is identical as A phase；Then have,
(1) A phase voltage difference in magnitude calculation formula is as follows:
In formula:
Ua: the preflood voltage magnitude of controllable voltage source；
Uθ: the amplitude of controllable voltage source injecting voltage.
At this point, the voltage magnitude U ' a of A phase:
Difference in magnitude Δ Ua=U'a-Ua=Uθ> 0 (formula 3)
Phase difference
By (formula 3) (formula 4) it is found that A phase voltage amplitude size increases, phase angle is constant.
(2) B phase voltage calculation formula is as follows:
At this point, the voltage magnitude U ' b of B phase:
Difference in magnitude
Phase angle
The phase angle of B phase before voltage source injects
Due to UθValue be 5-15V, be less than A phase voltage Ua, so the voltage magnitude U ' b of B phase declines；Arctan function exists
(- ∞ ,+∞) monotonic increase, soSo the phase angle of B phase becomes larger.
(3) C phase voltage calculation formula is as follows:
At this point, the voltage magnitude U ' C of C phase:
Difference in magnitude
Phase angle
The phase angle of C phase before voltage source injects
Due to UθValue be 5-15V, be less than A phase voltage Ua, so the voltage magnitude U ' c of C phase declines；
Arctan function in (- ∞ ,+∞) monotonic increase, soSo the phase angle of C phase becomes smaller.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
Reversely, described according to voltage amplitude value difference △ U and phase angle differenceThe step of determining family, change, phase relation include:
If the voltage amplitude value difference △ U is less than zero, the phase angle differenceEqual to zero, determine that the unknown family is in a disguised form closed
It is that gauge table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference △ U is greater than zero, the phase angle differenceLess than zero, determine that the unknown family is in a disguised form closed
It is that gauge table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference △ U is greater than zero, the phase angle differenceGreater than zero, determine that the unknown family is in a disguised form closed
It is that gauge table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference △ U is equal to zero, the phase angle differenceEqual to zero, determine that the unknown family is in a disguised form closed
It is that gauge table is not attached on the distribution transformer.
Similarly, when obtaining distribution transformer exit B phase voltage phase angle, the output voltage phase angle and B phase phase angle are in the same direction
Or it is reversed, alternatively, when obtaining distribution transformer exit C phase voltage phase angle, the output voltage phase angle and C phase phase angle it is in the same direction or
When reversed, by calculating simultaneously comparison voltage difference in magnitude △ U and phase angle differenceIt can determine family, change, phase relation.
Further, after determining that the covert relationship gauge table in the unknown family is not attached on the distribution transformer, choosing
Other distribution transformers are selected, step S1-S6 is repeated.
Further, the size of the output voltage is 5-15V.
Refering to Fig. 3, the embodiment of the present application provides a kind of family of offset voltage, change, phase relation determining device, comprising:
First acquisition unit 101, for obtaining unknown family, change, the first measurement voltage amplitude at phase triadic relation's gauge table
Value and the first measurement voltage phase angle；
Second acquisition unit 102, for obtaining distribution transformer exit A phase, B phase or C phase voltage phase angle；
Unit 103 is adjusted, for adjusting the output voltage of controllable voltage source, the controllable voltage source and the distribution transformer
The neutral point of device connects, and the output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Third acquiring unit 104, for obtaining the unknown family, change, the second measurement electricity at phase triadic relation's gauge table
Pressure amplitude value and the second measurement voltage phase angle；
Computing unit 105, for calculating the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；
Determination unit 106, for determining family, change, phase relation according to the voltage amplitude value difference and the phase angle difference.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
In the same direction, the determination unit 106, is also used to:
If the voltage amplitude value difference is greater than zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference is greater than zero, the covert relationship metering in the unknown family is determined
Table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference determines the covert relationship metering in the unknown family less than zero
Table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is not attached on the distribution transformer.
Further, when acquisition distribution transformer exit A phase voltage phase angle, the output voltage phase angle and A phase phase angle
Reversely, the determination unit 106, is also used to:
If the voltage amplitude value difference, less than zero, the phase angle difference is equal to zero, the covert relationship metering in the unknown family is determined
Table is connected in the A phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference determines the covert relationship metering in the unknown family less than zero
Table is connected in the B phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference is greater than zero, determines the covert relationship metering in the unknown family
Table is connected in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship metering in the unknown family
Table is not attached on the distribution transformer.
From the above technical scheme, the embodiment of the present application provides the family of offset voltage a kind of, change, phase relation determine method
And device, the method includes the first measurement voltage magnitudes and first at the unknown family of acquisition, change, phase triadic relation's gauge table to survey
Measure voltage phase angle；Obtain distribution transformer exit A phase, B phase or C phase voltage phase angle；The output voltage of controllable voltage source is adjusted,
The controllable voltage source is connect with the neutral point of the distribution transformer, the output voltage phase angle and A phase, B phase or C phase voltage
Phase angle size is identical；Obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and the second measurement
Voltage phase angle；Calculate the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；According to the voltage magnitude
The poor and described phase angle difference determines family, change, phase relation.The application is in addition to can effectively determine that family becomes relationship, moreover it is possible to while determination is unknown
Ammeter it is separate, the application principle is simple and reliable, can effectively solve the problem that the covert relationship in family.
Those skilled in the art will readily occur to its of the application after considering specification and practicing application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (7)
1. a kind of family of offset voltage, change, phase relation determine method characterized by comprising
Obtain unknown family, change, the first measurement voltage magnitude at phase triadic relation's gauge table and the first measurement voltage phase angle；
Obtain distribution transformer exit A phase, B phase or C phase voltage phase angle；
The output voltage of controllable voltage source is adjusted, the controllable voltage source is connect with the neutral point of the distribution transformer, described
Output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and the second measurement voltage phase angle；
Calculate the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；
Family, change, phase relation are determined according to the voltage amplitude value difference and the phase angle difference.
2. the method according to claim 1, wherein when obtaining distribution transformer exit A phase voltage phase angle, institute
It states output voltage phase angle and A phase phase angle is in the same direction, described the step of determining family, change, phase relation according to voltage amplitude value difference and phase angle difference
Include:
If the voltage amplitude value difference is greater than zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family is connected to
In the A phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference is greater than zero, and the unknown covert relationship gauge table in family is connected to
In the B phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, less than zero, the unknown covert relationship gauge table in family is connected to the phase angle difference
In the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family is not connected to
On the distribution transformer.
3. the method according to claim 1, wherein when obtaining distribution transformer exit A phase voltage phase angle, institute
It states output voltage phase angle and A phase phase angle is reversed, described the step of determining family, change, phase relation according to voltage amplitude value difference and phase angle difference
Include:
If the voltage amplitude value difference, less than zero, the phase angle difference is equal to zero, determine that the covert relationship gauge table in the unknown family connects
It connects in the A phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference determines that the covert relationship gauge table in the unknown family connects less than zero
It connects in the B phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference is greater than zero, determines that the covert relationship gauge table in the unknown family connects
It connects in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship gauge table in the unknown family not
It is connected on the distribution transformer.
4. the method according to claim 1, wherein the size of the output voltage is 5-15V.
5. a kind of family of offset voltage, change, phase relation determining device characterized by comprising
First acquisition unit, for obtaining unknown family, change, the first measurement voltage magnitude and first at phase triadic relation's gauge table
Measure voltage phase angle；
Second acquisition unit, for obtaining distribution transformer exit A phase, B phase or C phase voltage phase angle；
Unit is adjusted, for adjusting the output voltage of controllable voltage source, in the controllable voltage source and the distribution transformer
Property point connection, the output voltage phase angle and A phase, B phase or C phase voltage phase angle size are identical；
Third acquiring unit, for obtain the unknown family, change, the second measurement voltage magnitude at phase triadic relation's gauge table and
Second measurement voltage phase angle；
Computing unit, for calculating the voltage amplitude value difference and phase angle difference of the second measurement voltage and the first measurement voltage；
Determination unit, for determining family, change, phase relation according to the voltage amplitude value difference and the phase angle difference.
6. device according to claim 5, which is characterized in that when acquisition distribution transformer exit A phase voltage phase angle, institute
It states output voltage phase angle and A phase phase angle is in the same direction, the determination unit is also used to:
If the voltage amplitude value difference is greater than zero, the phase angle difference is equal to zero, determines that the covert relationship gauge table in the unknown family connects
It connects in the A phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference is greater than zero, determine that the covert relationship gauge table in the unknown family connects
It connects in the B phase of the distribution transformer；
If the voltage amplitude value difference, less than zero, the phase angle difference determines that the covert relationship gauge table in the unknown family connects less than zero
It connects in the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, determines the covert relationship gauge table in the unknown family not
It is connected on the distribution transformer.
7. device according to claim 5, which is characterized in that when acquisition distribution transformer exit A phase voltage phase angle, institute
It states output voltage phase angle and A phase phase angle is reversed, the determination unit is also used to:
If the voltage amplitude value difference, less than zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family is connected to
In the A phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, less than zero, the unknown covert relationship gauge table in family is connected to the phase angle difference
In the B phase of the distribution transformer；
If the voltage amplitude value difference is greater than zero, the phase angle difference is greater than zero, and the unknown covert relationship gauge table in family is connected to
In the C phase of the distribution transformer；
If the voltage amplitude value difference is equal to zero, the phase angle difference is equal to zero, and the unknown covert relationship gauge table in family is not connected to
On the distribution transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910677001.2A CN110221161B (en) | 2019-07-25 | 2019-07-25 | Method and device for determining household, transformer and phase relation of compensation voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677001.2A CN110221161B (en) | 2019-07-25 | 2019-07-25 | Method and device for determining household, transformer and phase relation of compensation voltage |
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| CN110221161B CN110221161B (en) | 2021-03-30 |
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| CN201910677001.2A Active CN110221161B (en) | 2019-07-25 | 2019-07-25 | Method and device for determining household, transformer and phase relation of compensation voltage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111679122A (en) * | 2020-05-26 | 2020-09-18 | 珠海中慧微电子有限公司 | Ammeter transformer area identification method based on transformer voltage regulation function |
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