CN109100624A - The method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether is surveyed for correction step-up - Google Patents
The method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether is surveyed for correction step-up Download PDFInfo
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- CN109100624A CN109100624A CN201811124876.1A CN201811124876A CN109100624A CN 109100624 A CN109100624 A CN 109100624A CN 201811124876 A CN201811124876 A CN 201811124876A CN 109100624 A CN109100624 A CN 109100624A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012937 correction Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 208000032750 Device leakage Diseases 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The present invention provides survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up, ensure the measurement accuracy for surveying voltage capacitance divider, it includes the unit fixing piece of N section series connection overlapping that step up side, which presses total tower structure high-pressure frequency-conversion resonant experimental device, unit fixing piece includes boosting resonance reactor, survey voltage capacitance divider, grading ring, measure the voltage value on the boosting resonance reactor of each section, the true reactance value of the boosting resonance reactor on each section unit fixing piece is calculated, Section 1, Section 2, ..., the ratio that N saves the true reactance value of the boosting resonance reactor on unit fixing piece is ZL1:ZL2:…:ZLN, the capacitance of the survey voltage capacitance divider on each section unit fixing piece is set, so that each section surveys the ratio of the capacitance of voltage capacitance divider and the ratio of the true reactance value of each section boosting resonance reactor is identical.
Description
Technical field
The present invention relates to high-pressure frequency-conversion experimental rig technical fields, survey particularly for correction step-up and press tower structure high pressure altogether
The method of frequency conversion resonance experiment device.
Background technique
Traditional high-pressure frequency-conversion experimental rig is divided into boosting resonance reactor tower and surveys pressure divider tower.Every group of tower structure is all
Need support base, balanced pressure system and adjustable fastening pull rod.It also needs to carry out anticorona connection between two towers.
The Chinese invention patent of Publication No. CN102788890A discloses a kind of high voltage variable for boosting, surveying the total tower structure of pressure
Frequency resonant experimental device, the design value of each section boosting resonance reactor be all it is identical, it is each to survey piezoelectric capsule divider
The value of section is also identical.And in test, the boosting resonance electricity at the relatively intermediate position of the boosting resonance reactor of top and bottom
Anti- device leakage field is big, and the reactance value outline actually to work is less than design value.And corresponding survey voltage capacitance divider is not due to by magnetic
The value that each economize on electricity of the influence of field is held is constant, and error will be present in the measurement result finally obtained.
Summary of the invention
In view of the above-mentioned problems, the present invention provides survey to press tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up
Method, it is ensured that survey voltage capacitance divider measurement accuracy.
Its technical solution is such that correction step-up surveys the side for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether
Method, tower structure high-pressure frequency-conversion resonant experimental device includes that the unit of rack-mount N section series connection overlapping is consolidated to step up side pressure altogether
Determine part, wherein N is natural number, and the unit fixing piece includes boosting resonance reactor, surveys voltage capacitance divider, grading ring, institute
It states boosting resonance reactor and the voltage capacitance divider of surveying passes through the connecting plate connection of two pieces of upper and lower end electrification interfaces, institute
Grading ring is stated to be fitted between the connecting plate of upper and lower end by the connecting plate of upper and lower end, it is characterised in that:
Under test situation, the voltage value on the boosting resonance reactor of each section is measured by external pressure measuring device,
In, the voltage value of the boosting resonance reactor on Section 1 unit fixing piece is U1, boosting resonance on Section 2 unit fixing piece
The voltage value of reactor is U2, the voltage value that N saves the boosting resonance reactor fixing piece on unit is UN；
True reactance value of the boosting resonance reactor under test situation on each section unit fixing piece are as follows:
The true reactance value of boosting resonance reactor on Section 1 unit fixing piece: ZL1=U1/I；
The true reactance value of boosting resonance reactor on Section 2 unit fixing piece: ZL2=(U2-U1)/I；
N saves the true reactance value of the boosting resonance reactor on unit fixing piece: ZLN=(UN-UN-1)/I；
Section 1, Section 2 ..., the ratio of true reactance value of boosting resonance reactor on N section unit fixing piece be
ZL1:ZL2:…:ZLN, the capacitance of the survey voltage capacitance divider on each section unit fixing piece is set, so that surveying voltage capacitance partial pressure
The ratio of the capacitance of device is identical as the boosting ratio of true reactance value of resonance reactor.
Further, the value range of N is 3-6.
Further, several are provided on the connecting plate of the upper and lower end between the unit fixing piece for pacifying
Fill the groove of grading ring.
Further, several hanging rings are respectively set on the unit fixing piece, the hanging ring enables to unit fixing piece
Vertically without inclination when lifting.
Further, the external pressure measuring device is that divider is pressed in external survey.
Further, it further includes that adjustable fastening is drawn that the step up side, which presses total tower structure high-pressure frequency-conversion resonant experimental device,
Bar.
Of the invention surveys the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up, is risen by measurement
Pressure surveys the true reactance value for pressing tower structure high-pressure frequency-conversion resonant experimental device each section boosting resonance reactor in test altogether, root
The corresponding capacitance for surveying voltage capacitance divider is designed according to the ratio of the true reactance value of boosting resonance reactor, i.e., with non-thread
Property capacitance partial pressure come compensate due to the magnetic line of force unevenly caused by reactor reactance value it is non-linear, to reduce due to top
With bottom boosting resonance reactor in test due to magnetic fields lead to the variation of reactance value and bring measurement error, can
Obtain more accurate measurement result；While making measurement result more accurate, while it ensure that each boosting resonance
The current potential that reactor is connected with survey voltage capacitance divider is consistent, without potential difference circulation and the risk discharged.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that step up side of the invention presses tower structure high-pressure frequency-conversion resonant experimental device altogether；
Fig. 2 is the unit anchor structure signal that step up side of the invention presses tower structure high-pressure frequency-conversion resonant experimental device altogether
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
See Fig. 1, Fig. 2, a kind of survey for correction step-up of the invention presses total tower structure high-pressure frequency-conversion resonant experimental device
Method, it includes the unit for the 4 sections series connection overlapping being mounted on bracket 9 that step up side, which presses total tower structure high-pressure frequency-conversion resonant experimental device,
Fixing piece 8, unit fixing piece 8 include boosting resonance reactor 1, survey voltage capacitance divider 2, grading ring 3, adjustable fastening pull rod
4, the connecting plate 5 that resonance reactor 1 and survey voltage capacitance divider 2 charge interfaces by two pieces of upper and lower end that boosts connects, and presses
Ring 3 is fitted between the connecting plate 4 of upper and lower end by the connecting plate 4 of upper and lower end, upper and lower between unit fixing piece 8
It is provided with several on the connecting plate 4 at end for installing the groove 6 of grading ring 3, several hanging rings are respectively set on unit fixing piece 8
7, hanging ring 7 enables to unit fixing piece 8 when lifting by crane vertically without inclination,
Under test situation, pressure divider is surveyed by outside and measures the boosting resonance reactor on each section unit fixing piece
On voltage value, see Fig. 1, be Section 1, Section 2, Section 3, Section 4 respectively from the bottom up, wherein on Section 1 unit fixing piece
The voltage value of boosting resonance reactor be U1, the voltage value of the boosting resonance reactor on Section 2 unit fixing piece is U2, the 3rd
The voltage value for saving the boosting resonance reactor on unit fixing piece is U3；Boosting resonance reactor on Section 4 unit fixing piece
Voltage value be U4。
True reactance value of the boosting resonance reactor under test situation on each section unit fixing piece are as follows:
The true reactance value of boosting resonance reactor on Section 1 unit fixing piece: ZL1=U1/I；
The true reactance value of boosting resonance reactor on Section 2 unit fixing piece: ZL2=(U2-U1)/I；
The true reactance value of boosting resonance reactor on Section 3 unit fixing piece: ZL3=(U3-U2)/I；
The true reactance value of boosting resonance reactor on Section 4 unit fixing piece: ZL4=(U4-U3)/I；
Section 1, Section 2, Section 3, boosting resonance reactor on Section 4 unit fixing piece true reactance value ratio
For ZL1:ZL2:ZL3:ZL4, the capacitance of the survey voltage capacitance divider on each section unit fixing piece is set, so that surveying voltage capacitance point
The ratio of the capacitance of depressor is identical as the boosting ratio of true reactance value of resonance reactor.
Of the invention surveys the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up, is risen by measurement
Pressure surveys the true reactance value for pressing tower structure high-pressure frequency-conversion resonant experimental device each section boosting resonance reactor in test altogether, root
The corresponding capacitance for surveying voltage capacitance divider is designed according to the ratio of the true reactance value of each section boosting resonance reactor, i.e.,
Compensated with nonlinear capacitance partial pressure due to the magnetic line of force unevenly caused by reactor reactance value it is non-linear, thus reduce by
When top and bottom boosting resonance reactor is in test due to magnetic fields lead to the variation of reactance value and bring measurement misses
Difference can obtain more accurate measurement result；While making measurement result more accurate, while it ensure that each liter
The current potential that pressure resonance reactor is connected with survey voltage capacitance divider is consistent, without potential difference circulation and the risk discharged.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. surveying the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up, step up side presses tower structure high pressure altogether
Frequency conversion resonance experiment device includes the unit fixing piece of rack-mount N section series connection overlapping, and wherein N is natural number, described
Unit fixing piece includes boosting resonance reactor, surveys voltage capacitance divider, grading ring, the boosting resonance reactor and the survey
Voltage capacitance divider is connected by the connecting plate of two pieces of upper and lower end electrification interfaces, and the grading ring is described by upper and lower end
Connecting plate is fitted between the connecting plate of upper and lower end, it is characterised in that:
Under test situation, the voltage value on the boosting resonance reactor of each section is measured by external pressure measuring device, wherein the
The voltage value of boosting resonance reactor on 1 section unit fixing piece is U1, boosting resonance reactor on Section 2 unit fixing piece
Voltage value be U2, the voltage value that N saves the boosting resonance reactor fixing piece on unit is UN；
True reactance value of the boosting resonance reactor under test situation on each section unit fixing piece are as follows:
The true reactance value of boosting resonance reactor on Section 1 unit fixing piece: ZL1=U1/I；
The true reactance value of boosting resonance reactor on Section 2 unit fixing piece: ZL2=(U2-U1)/I；
N saves the true reactance value of the boosting resonance reactor on unit fixing piece: ZLN=(UN-UN-1)/I；
Section 1, Section 2 ..., N section unit fixing piece on boosting resonance reactor true reactance value ratio be ZL1:
ZL2:…:ZLN, the capacitance of the survey voltage capacitance divider on each section unit fixing piece is set, so that surveying voltage capacitance divider
The ratio of capacitance is identical as the boosting ratio of true reactance value of resonance reactor.
2. according to claim 1 survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up,
It is characterized by: the value range of N is 3-6.
3. according to claim 1 survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up,
It is characterized by: be provided on the connecting plate of the upper and lower end between the unit fixing piece several for install press
The groove of ring.
4. according to claim 1 survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up,
It is characterized by: several hanging rings are respectively set on the unit fixing piece, when the hanging ring enables to unit fixing piece to lift by crane
Vertically without inclination.
5. according to claim 1 survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up,
It is characterized by: the external pressure measuring device is that divider is pressed in external survey.
6. according to claim 1 survey the method for pressing tower structure high-pressure frequency-conversion resonant experimental device altogether for correction step-up,
It is characterized by: it further includes adjustable fastening pull rod that the step up side, which presses total tower structure high-pressure frequency-conversion resonant experimental device,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124876.1A CN109100624B (en) | 2018-09-26 | 2018-09-26 | Method for correcting, boosting and pressure measuring high-voltage variable-frequency resonance test device with common tower structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124876.1A CN109100624B (en) | 2018-09-26 | 2018-09-26 | Method for correcting, boosting and pressure measuring high-voltage variable-frequency resonance test device with common tower structure |
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| Publication Number | Publication Date |
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| CN109100624B CN109100624B (en) | 2020-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217137A (en) * | 2021-11-30 | 2022-03-22 | 国网上海市电力公司 | A self-resonant inductance pressure measuring test device with capacitive reactance fusion structure |
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| CN101388610A (en) * | 2008-07-08 | 2009-03-18 | 河北省电力研究院 | A method for resonant voltage boosting of voltage transformers in fully enclosed combined electrical appliances |
| JP4840050B2 (en) * | 2006-09-28 | 2011-12-21 | 富士電機株式会社 | Partial discharge measuring device |
| CN202854174U (en) * | 2012-07-24 | 2013-04-03 | 苏州华电电气股份有限公司 | High-voltage frequency conversion resonance test device for boosting and voltage measuring integrated tower structure |
| CN103197220A (en) * | 2013-04-12 | 2013-07-10 | 国家电网公司 | 200kV frequency modulating capacity modulating series resonance voltage boosting device |
| CN103560761A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Numerical control resonant frequency selecting circuit |
| CN106771892A (en) * | 2016-11-21 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | Power supply capacity compensation method in a kind of Three-Phase Transformer partial discharge experiment |
| CN108548995A (en) * | 2018-03-28 | 2018-09-18 | 国网江苏省电力公司电力科学研究院 | It is a kind of to rise act formula large capacity series resonance pressure test apparatus certainly |
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2018
- 2018-09-26 CN CN201811124876.1A patent/CN109100624B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4840050B2 (en) * | 2006-09-28 | 2011-12-21 | 富士電機株式会社 | Partial discharge measuring device |
| CN101388610A (en) * | 2008-07-08 | 2009-03-18 | 河北省电力研究院 | A method for resonant voltage boosting of voltage transformers in fully enclosed combined electrical appliances |
| CN202854174U (en) * | 2012-07-24 | 2013-04-03 | 苏州华电电气股份有限公司 | High-voltage frequency conversion resonance test device for boosting and voltage measuring integrated tower structure |
| CN103197220A (en) * | 2013-04-12 | 2013-07-10 | 国家电网公司 | 200kV frequency modulating capacity modulating series resonance voltage boosting device |
| CN103560761A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Numerical control resonant frequency selecting circuit |
| CN106771892A (en) * | 2016-11-21 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | Power supply capacity compensation method in a kind of Three-Phase Transformer partial discharge experiment |
| CN108548995A (en) * | 2018-03-28 | 2018-09-18 | 国网江苏省电力公司电力科学研究院 | It is a kind of to rise act formula large capacity series resonance pressure test apparatus certainly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217137A (en) * | 2021-11-30 | 2022-03-22 | 国网上海市电力公司 | A self-resonant inductance pressure measuring test device with capacitive reactance fusion structure |
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