CN108667050A - Distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array - Google Patents
Distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array Download PDFInfo
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- 238000009826 distribution Methods 0.000 title claims abstract description 145
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- 238000005303 weighing Methods 0.000 claims description 5
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- 230000005611 electricity Effects 0.000 claims description 3
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- 238000004458 analytical method Methods 0.000 description 2
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- 238000004590 computer program Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/16—Measuring asymmetry of polyphase networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Power Engineering (AREA)
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Abstract
The present invention discloses a kind of distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array, including：1）Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the uneven continued case variation track of distribution transformer low-pressure side three-phase voltage；2）Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record the permanent disequilibrium limits value of distribution transformer low-pressure side three-phase voltage；3）Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record the permanent disequilibrium logical value of distribution transformer low-pressure side three-phase voltage；4）Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the uneven decision content of distribution transformer low-pressure side three-phase voltage；5）According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase permanent disequilibrium situation.The appraisal procedure can effectively reflect distribution transformer low-pressure side three-phase voltage permanent disequilibrium situation, have preferable practical value.
Description
Technical field
The present invention relates to distribution network electric energy quality field, a kind of specifically distribution low-voltage side based on voltage trace battle array
Voltage three-phase permanent disequilibrium appraisal procedure.
Background technology
Now with economic rapid development, a large amount of business parkings, which are gone into operation, to be run, these scientific and technological parks are by high
The automatic control equipment of smart point realizes the manufacturing of product, and with the extensive application of high-precision electronic product, power quality is asked
Topic increasingly becomes problem of people's attention, the rapid drawdown of voltage or rises sharply, the imbalance of three-phase voltage voltage, harmonic distortion etc.
It can all cause high-grade, precision and advanced electronic production equipment to be stopped transport, jeopardize production safety, cause heavy economic losses and social influence.
Meanwhile the electric energy supply of high quality is also the important symbol of first-class power distribution network, so the outlet of analysis substation, important
Switching station, important taiwan area, the power quality of responsible consumer, by for the comprehensive of distribution transformer low-pressure side imbalance of three-phase voltage
Analysis is closed, to find the weak link of power grid, and practicable Strategies of Maintenance is provided, has important practical significance.
Invention content
It is an object of the invention to solve distribution transformer low-pressure side three-phase voltage permanent disequilibrium evaluation problem, in conjunction with
Electrical network feature provides a kind of distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array.
Technical solution for achieving the above object is as follows：
A kind of distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array, this method include following step
Suddenly：
（1）Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Continued case variation track；
（2）Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balance limits value；
（3）Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balanced logic value；
（4）Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Decision content；
（5）According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues not
Equilibrium condition.
Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the injustice of distribution transformer low-pressure side three-phase voltage
Weigh continued case variation track, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；RV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment
Rate.Wherein the 1st moment is the real-time voltage three-phase imbalance rate at current time, and the 2nd moment is to be pushed forward 5 points at the 1st moment
Voltage three-phase imbalance rate when clock, voltage three-phase imbalance rate when the 3rd moment is pushed forward 10 minutes for the 1st moment, the 4th
A moment is voltage three-phase imbalance rate when being pushed forward 15 minutes at the 1st moment, and the 5th moment is to be pushed forward 20 points at the 1st moment
Voltage three-phase imbalance rate when clock, the 6th moment are voltage three-phase imbalance rate when being pushed forward 25 minutes at the 1st moment.
V ij,max Indicate theiThe of a distribution transformerjThe distribution low-voltage side three-phase voltage maximum value at moment；V ij,min It indicates
TheiThe of a distribution transformerjThe distribution low-voltage side three-phase voltage minimum value at moment；V ij,N Indicate theiA distribution transformer
ThejThe single-phase load voltage value in distribution low-voltage side at moment；
Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record the lasting injustice of distribution transformer low-pressure side three-phase voltage
Weigh limits value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；SV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance rate at a moment
Limit value.Wherein the 1st moment is the voltage three-phase imbalance rate limit value at current time, and the 2nd moment is to be pushed forward 5 at the 1st moment
Voltage three-phase imbalance rate limit value when minute, the 3rd moment are voltage three-phase imbalance when being pushed forward 10 minutes at the 1st moment
Rate limit value, the 4th moment are voltage three-phase imbalance rate limit value when being pushed forward 15 minutes at the 1st moment, and the 5th moment is the 1st
Voltage three-phase imbalance rate limit value when a moment is pushed forward 20 minutes, the 6th moment are electricity when being pushed forward 25 minutes at the 1st moment
Press three-phase imbalance rate limit value.
Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record continuing for distribution transformer low-pressure side three-phase voltage
Uneven logical value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；LV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment is patrolled
Collect value.Wherein the 1st moment is the real-time voltage three-phase imbalance logical value at current time, before the 2nd moment is the 1st moment
Voltage three-phase imbalance logical value when pushing away 5 minutes, voltage three-phase when the 3rd moment is pushed forward 10 minutes for the 1st moment is not
Balanced logic value, the 4th moment are voltage three-phase imbalance logical value when being pushed forward 15 minutes at the 1st moment, and the 5th moment be
Voltage three-phase imbalance logical value when 1st moment is pushed forward 20 minutes, the 6th moment are when being pushed forward 25 minutes at the 1st moment
Voltage three-phase imbalance logical value.
Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the injustice of distribution transformer low-pressure side three-phase voltage
Weigh decision content, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；DV i Table
ShowiThe low-pressure side voltage three-phase imbalance decision content of a distribution transformer.
According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues
Unbalance condition, specially：
1st step, sequence are chosenDVCTIn an elementDV i , and carry out next step judgement.
2nd step, ifDV i Equal to 6, then it represents that theiA distribution transformer low-pressure side three-phase voltage continues three in 30 minutes
It is mutually uneven, imbalance compensation measure need to be taken the distribution transformer.Otherwise next step judgement is carried out.
3rd step, ifDV i Equal to 0, then it represents that theiA distribution transformer low-pressure side three-phase voltage continues three in 30 minutes
It balances each other, distribution transformer operational excellence.Otherwise next step judgement is carried out.
4th step, ifDV i More than 0, and it is less than 6, then it represents that theiA distribution transformer low-pressure side three-phase voltage was at 30 minutes
Interior intermittence three-phase imbalance, need to pay close attention to the following operating status of the distribution transformer.And carry out next step judgement.
5th step persistently carries out the 1st step and judges to the 4th step, until voltage three-phase permanent disequilibrium decision tableDVCTIn own
Element all judges to complete.
Advantageous effects of the present invention：Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMIt is low to record distribution transformer
Press the uneven continued case variation track of side three-phase voltage；Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMMatched with record
The permanent disequilibrium limits value of piezoelectric transformer low-pressure side three-phase voltage；Establish voltage three-phase permanent disequilibrium logic arrayLVCMWith note
Record the permanent disequilibrium logical value of distribution transformer low-pressure side three-phase voltage；Establish voltage three-phase permanent disequilibrium decision tableDVCT
To record the uneven decision content of distribution transformer low-pressure side three-phase voltage；According to voltage three-phase permanent disequilibrium decision tableDVCT
Overall merit distribution transformer low-pressure side voltage three-phase permanent disequilibrium situation.The appraisal procedure can effectively reflect distribution transformer
Device low-pressure side three-phase voltage permanent disequilibrium situation has preferable practical value.
Description of the drawings
Fig. 1 is typical power distribution network figure.
Specific implementation mode
The present invention will be described in detail below：
（1）Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Continued case variation track；
（2）Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balance limits value；
（3）Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balanced logic value；
（4）Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Decision content；
（5）According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues not
Equilibrium condition.
Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the injustice of distribution transformer low-pressure side three-phase voltage
Weigh continued case variation track, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；RV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment
Rate.Wherein the 1st moment is the real-time voltage three-phase imbalance rate at current time, and the 2nd moment is to be pushed forward 5 points at the 1st moment
Voltage three-phase imbalance rate when clock, voltage three-phase imbalance rate when the 3rd moment is pushed forward 10 minutes for the 1st moment, the 4th
A moment is voltage three-phase imbalance rate when being pushed forward 15 minutes at the 1st moment, and the 5th moment is to be pushed forward 20 points at the 1st moment
Voltage three-phase imbalance rate when clock, the 6th moment are voltage three-phase imbalance rate when being pushed forward 25 minutes at the 1st moment.
V ij,max Indicate theiThe of a distribution transformerjThe distribution low-voltage side three-phase voltage maximum value at moment；V ij,min It indicates
TheiThe of a distribution transformerjThe distribution low-voltage side three-phase voltage minimum value at moment；V ij,N Indicate theiA distribution transformer
ThejThe single-phase load voltage value in distribution low-voltage side at moment；
Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record the lasting injustice of distribution transformer low-pressure side three-phase voltage
Weigh limits value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；SV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance rate at a moment
Limit value.Wherein the 1st moment is the voltage three-phase imbalance rate limit value at current time, and the 2nd moment is to be pushed forward 5 at the 1st moment
Voltage three-phase imbalance rate limit value when minute, the 3rd moment are voltage three-phase imbalance when being pushed forward 10 minutes at the 1st moment
Rate limit value, the 4th moment are voltage three-phase imbalance rate limit value when being pushed forward 15 minutes at the 1st moment, and the 5th moment is the 1st
Voltage three-phase imbalance rate limit value when a moment is pushed forward 20 minutes, the 6th moment are electricity when being pushed forward 25 minutes at the 1st moment
Press three-phase imbalance rate limit value.
Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record continuing for distribution transformer low-pressure side three-phase voltage
Uneven logical value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；LV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment is patrolled
Collect value.Wherein the 1st moment is the real-time voltage three-phase imbalance logical value at current time, before the 2nd moment is the 1st moment
Voltage three-phase imbalance logical value when pushing away 5 minutes, voltage three-phase when the 3rd moment is pushed forward 10 minutes for the 1st moment is not
Balanced logic value, the 4th moment are voltage three-phase imbalance logical value when being pushed forward 15 minutes at the 1st moment, and the 5th moment be
Voltage three-phase imbalance logical value when 1st moment is pushed forward 20 minutes, the 6th moment are when being pushed forward 25 minutes at the 1st moment
Voltage three-phase imbalance logical value.
Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the injustice of distribution transformer low-pressure side three-phase voltage
Weigh decision content, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；DV i Table
ShowiThe low-pressure side voltage three-phase imbalance decision content of a distribution transformer.
According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues
Unbalance condition, specially：
1st step, sequence are chosenDVCTIn an elementDV i , and carry out next step judgement.
2nd step, ifDV i Equal to 6, then it represents that theiA distribution transformer low-pressure side three-phase voltage continues three in 30 minutes
It is mutually uneven, imbalance compensation measure need to be taken the distribution transformer.Otherwise next step judgement is carried out.
3rd step, ifDV i Equal to 0, then it represents that theiA distribution transformer low-pressure side three-phase voltage continues three in 30 minutes
It balances each other, distribution transformer operational excellence.Otherwise next step judgement is carried out.
4th step, ifDV i More than 0, and it is less than 6, then it represents that theiA distribution transformer low-pressure side three-phase voltage was at 30 minutes
Interior intermittence three-phase imbalance, need to pay close attention to the following operating status of the distribution transformer.And carry out next step judgement.
5th step persistently carries out the 1st step and judges to the 4th step, until voltage three-phase permanent disequilibrium decision tableDVCTIn own
Element all judges to complete.
Specific embodiment as shown in Figure 1, S1 be substation's outlet switch, A, B, C, D be feeder line section switch, DT1, DT2,
DT3, DT4 are distribution transformer, the low-pressure side three-phase voltage of each distribution transformer persistently balance judge it is as follows：
The real-time battle array of voltage three-phase permanent disequilibriumRVCMFor：
Voltage three-phase permanent disequilibrium limit value battle arraySVCMFor：
Voltage three-phase permanent disequilibrium logic arrayLVCMFor：
Voltage three-phase permanent disequilibrium decision tableDVCTFor：
According to voltage three-phase permanent disequilibrium decision tableDVCTIt is uneven to understand that distribution transformer DT1 continues three-phase in 30 minutes
Weighing apparatus, distribution transformer DT2 have 20 minutes intermittence three-phase voltage permanent disequilibriums in 30 minutes, and distribution transformer DT3 is 30
Three-phase voltage persistently balances in minute, and distribution transformer DT4 has 10 minutes intermittence three-phase voltages to continue injustice in 30 minutes
Weighing apparatus.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can
It is completed with instructing relevant hardware by computer program, the program can be stored in a computer-readable storage
In medium, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can
For magnetic disc, CD, read-only memory (Read-OnlyMemory, ROM) or random access memory
(RandomAccessMemory, RAM) etc..
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field modification and variation equivalent made by the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (6)
1. a kind of distribution low-voltage side voltage three-phase permanent disequilibrium appraisal procedure based on voltage trace battle array, it is characterised in that：Packet
Include following steps：
（1）Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Continued case variation track；
（2）Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balance limits value；
（3）Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record continuing not for distribution transformer low-pressure side three-phase voltage
Balanced logic value；
（4）Establish voltage three-phase permanent disequilibrium decision tableDVCTTo record the imbalance of distribution transformer low-pressure side three-phase voltage
Decision content；
（5）According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues not
Equilibrium condition.
2. the distribution low-voltage side voltage three-phase permanent disequilibrium assessment side according to claim 1 based on voltage trace battle array
Method, it is characterised in that：
Establish the real-time battle array of voltage three-phase permanent disequilibriumRVCMImbalance to record distribution transformer low-pressure side three-phase voltage is held
Continuous situation variation track, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；RV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment
Rate；Wherein the 1st moment is the real-time voltage three-phase imbalance rate at current time, and the 2nd moment is to be pushed forward 5 points at the 1st moment
Voltage three-phase imbalance rate when clock, voltage three-phase imbalance rate when the 3rd moment is pushed forward 10 minutes for the 1st moment, the 4th
A moment is voltage three-phase imbalance rate when being pushed forward 15 minutes at the 1st moment, and the 5th moment is to be pushed forward 20 points at the 1st moment
Voltage three-phase imbalance rate when clock, the 6th moment are voltage three-phase imbalance rate when being pushed forward 25 minutes at the 1st moment；
V ij,max Indicate theiThe of a distribution transformerjThe distribution low-voltage side three-phase voltage maximum value at moment；V ij,min Indicate thei
The of a distribution transformerjThe distribution low-voltage side three-phase voltage minimum value at moment；V ij,N Indicate theiThe of a distribution transformerj
The single-phase load voltage value in distribution low-voltage side at moment.
3. the distribution low-voltage side voltage three-phase permanent disequilibrium assessment side according to claim 1 based on voltage trace battle array
Method, it is characterised in that：
Establish voltage three-phase permanent disequilibrium limit value battle arraySVCMTo record the lasting injustice of distribution transformer low-pressure side three-phase voltage
Weigh limits value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；SV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance rate at a moment
Limit value；Wherein the 1st moment is the voltage three-phase imbalance rate limit value at current time, and the 2nd moment is to be pushed forward 5 at the 1st moment
Voltage three-phase imbalance rate limit value when minute, the 3rd moment are voltage three-phase imbalance when being pushed forward 10 minutes at the 1st moment
Rate limit value, the 4th moment are voltage three-phase imbalance rate limit value when being pushed forward 15 minutes at the 1st moment, and the 5th moment is the 1st
Voltage three-phase imbalance rate limit value when a moment is pushed forward 20 minutes, the 6th moment are electricity when being pushed forward 25 minutes at the 1st moment
Press three-phase imbalance rate limit value.
4. the distribution low-voltage side voltage three-phase permanent disequilibrium assessment side according to claim 1 based on voltage trace battle array
Method, it is characterised in that：
Establish voltage three-phase permanent disequilibrium logic arrayLVCMTo record the lasting injustice of distribution transformer low-pressure side three-phase voltage
Weigh logical value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；LV ij Table
ShowiThe of a distribution transformerj(j=1,2,3,4,5,6) the distribution transformer low-pressure side voltage three-phase imbalance at a moment is patrolled
Collect value；Wherein the 1st moment is the real-time voltage three-phase imbalance logical value at current time, before the 2nd moment is the 1st moment
Voltage three-phase imbalance logical value when pushing away 5 minutes, voltage three-phase when the 3rd moment is pushed forward 10 minutes for the 1st moment is not
Balanced logic value, the 4th moment are voltage three-phase imbalance logical value when being pushed forward 15 minutes at the 1st moment, and the 5th moment be
Voltage three-phase imbalance logical value when 1st moment is pushed forward 20 minutes, the 6th moment are when being pushed forward 25 minutes at the 1st moment
Voltage three-phase imbalance logical value.
5. the distribution low-voltage side voltage three-phase permanent disequilibrium assessment side according to claim 1 based on voltage trace battle array
Method, it is characterised in that：
Establish voltage three-phase permanent disequilibrium decision tableDVCTImbalance to record distribution transformer low-pressure side three-phase voltage is sentenced
Definite value, specially：
Wherein,i=1,2,3…,nIndicate the number of distribution transformer in feeder line,nFor distribution transformer sum in feeder line；DV i It indicates
TheiThe low-pressure side voltage three-phase imbalance decision content of a distribution transformer.
6. being commented according to any distribution low-voltage side voltage three-phase permanent disequilibriums based on voltage trace battle array of claim 1-5
Estimate method, it is characterised in that：
According to voltage three-phase permanent disequilibrium decision tableDVCTOverall merit distribution transformer low-pressure side voltage three-phase continues injustice
Weighing apparatus situation, specially：
1st step, sequence are chosenDVCTIn an elementDV i , and carry out next step judgement；
2nd step, ifDV i Equal to 6, then it represents that theiIt is uneven that a distribution transformer low-pressure side three-phase voltage continues three-phase in 30 minutes
Weighing apparatus, need to take the distribution transformer imbalance compensation measure, otherwise carry out next step judgement；
3rd step, ifDV i Equal to 0, then it represents that theiIt is equal that a distribution transformer low-pressure side three-phase voltage continues three in 30 minutes
Otherwise weighing apparatus, distribution transformer operational excellence carry out next step judgement；
4th step, ifDV i More than 0, and it is less than 6, then it represents that theiA distribution transformer low-pressure side three-phase voltage interval in 30 minutes
Property three-phase imbalance, need to pay close attention to the following operating status of the distribution transformer, and carry out next step judgement；
5th step persistently carries out the 1st step and judges to the 4th step, until voltage three-phase permanent disequilibrium decision tableDVCTMiddle all elements
All judgement is completed.
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| CN111239646A (en) * | 2020-01-17 | 2020-06-05 | 南方电网科学研究院有限责任公司 | On-load tap-changer interstage short circuit fault early warning method and device and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006054944A (en) * | 2004-08-10 | 2006-02-23 | Kyoto Univ | Voltage unbalance compensating apparatus and method of distribution system |
| CN104201671A (en) * | 2014-08-28 | 2014-12-10 | 华中科技大学 | Static voltage stability assessment method of three-phase unbalanced power distribution network including wind power |
| CN105759164A (en) * | 2016-04-05 | 2016-07-13 | 国网江西省电力科学研究院 | Neural line disconnection detection and positioning method |
| CN106505593A (en) * | 2016-10-14 | 2017-03-15 | 国网信通亿力科技有限责任公司 | A kind of method of the analysis of distribution transforming three-phase imbalance and load adjustment based on big data |
| CN107293174A (en) * | 2017-07-07 | 2017-10-24 | 积成电子股份有限公司 | Distribution network failure based on track battle array judges training evaluation method |
-
2018
- 2018-05-17 CN CN201810475125.8A patent/CN108667050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006054944A (en) * | 2004-08-10 | 2006-02-23 | Kyoto Univ | Voltage unbalance compensating apparatus and method of distribution system |
| CN104201671A (en) * | 2014-08-28 | 2014-12-10 | 华中科技大学 | Static voltage stability assessment method of three-phase unbalanced power distribution network including wind power |
| CN105759164A (en) * | 2016-04-05 | 2016-07-13 | 国网江西省电力科学研究院 | Neural line disconnection detection and positioning method |
| CN106505593A (en) * | 2016-10-14 | 2017-03-15 | 国网信通亿力科技有限责任公司 | A kind of method of the analysis of distribution transforming three-phase imbalance and load adjustment based on big data |
| CN107293174A (en) * | 2017-07-07 | 2017-10-24 | 积成电子股份有限公司 | Distribution network failure based on track battle array judges training evaluation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239646A (en) * | 2020-01-17 | 2020-06-05 | 南方电网科学研究院有限责任公司 | On-load tap-changer interstage short circuit fault early warning method and device and storage medium |
| CN111239646B (en) * | 2020-01-17 | 2021-10-01 | 南方电网科学研究院有限责任公司 | On-load tap-changer interstage short circuit fault early warning method and device and storage medium |
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