CN203881814U - Adaptive voltage equalizing apparatus - Google Patents
Adaptive voltage equalizing apparatus Download PDFInfo
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- CN203881814U CN203881814U CN201420287489.0U CN201420287489U CN203881814U CN 203881814 U CN203881814 U CN 203881814U CN 201420287489 U CN201420287489 U CN 201420287489U CN 203881814 U CN203881814 U CN 203881814U
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- balancer structure
- electrical parameter
- grading ring
- testing equipment
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- 230000003044 adaptive effect Effects 0.000 title abstract 3
- 238000012360 testing method Methods 0.000 claims abstract description 54
- 230000005684 electric field Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract 6
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000462 isostatic pressing Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
Embodiments of the present utility model provide an adaptive voltage equalizing apparatus which is applied to a point local strong electric field of a high potential end of shielding test equipment. The adaptive voltage equalizing apparatus includes a size-adjustable voltage equalizing mechanism, a compression air drive apparatus and an electricity quantity parameter measuring unit. The voltage equalizing mechanism is disposed at the high potential end of a high-voltage sleeve of the test equipment, and shields the point local strong electric field of the high potential end. The compression air drive apparatus is connected with the test equipment, and is communicated with the voltage equalizing mechanism through air flow channels in the high-voltage sleeve so as to adjust the size of the voltage equaling mechanism through air charging and discharging. The electricity quantity parameter measuring unit is used for measuring electricity quantity parameters of the high potential end of the high-voltage sleeve of the test equipment and the voltage equalizing mechanism, so that subsequently the compression air drive apparatus can be driven according to the electricity quantity parameter to adjust the size of the voltage equalizing until the measured electricity quantity parameters by the electricity quantity measuring unit are within an expected range.
Description
Technical field
The utility model belongs to electric power detection field, relates in particular to a kind of self-adaptation pressure-equalizing device.
Background technology
When the voltage of power mutual inductor that is 1000KV and 500KV to electric pressure carries out verification, generally adopt full voltage ratio law and state standard to trace to the source.Need in practice to use power frequency series resonance or other boosting modes that tested voltage transformer (VT) and standard potential transformer are risen to maximum amount and determine power-frequency voltage by expanding voltage multiple, thereby secondary terminals voltage is measured to reach the object of error testing.Consider the exterior insulation of the testing equipments such as standard mutual inductor, stepup transformer, need to use pressure-equalizing device to shield to its high-pressure side, shield thereby optimize the length and the volume that design the bushing that effectively reduces testing equipment.Existing 1000KV and 500KV alternating electromotive force voltage transformer error are tested the pressure-equalizing device using generally fixed grading ring and equal pressure caps, and it exists, and volume is large, heavy, need the problems such as on-the-spot installation.
And because vehicle interior size is limited and the restriction of height of car, 1000KV and 500KV alternating electromotive force voltage transformer error are tested the fixed pressure-equalizing device using and cannot be realized overall vehicle-mountedization now, can only disassemble to open and be transported to infield, then assemble temporarily and install.
Therefore alternating electromotive force voltage transformer error of the prior art is tested the fixed pressure-equalizing device using and usually cannot be realized overall vehicle-mountedization, can only waste time and energy and assemble installation in infield temporarily.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of self-adaptation pressure-equalizing device, can self-adaptation regulates the size of pressure-equalizing device, and volume can be very little, convenient transport, and without interim assembling.
For achieving the above object, the utility model embodiment provides a kind of self-adaptation pressure-equalizing device, for the local highfield in tip of shield test reactor equipment hot end, comprising:
The balancer structure of dimension adjustable, is arranged on the hot end of the bushing of described testing equipment, and shields the local highfield in tip of this hot end;
Compressed air drive arrangement, be connected with described testing equipment, and communicate with described balancer structure by the gas channel in described bushing, thereby to regulate the external dimensions of described balancer structure to reach the electric field intensity of even test equipment bushing extraneous air by adjusting its air pressure inside;
Electrical parameter measuring unit, for measuring the hot end of described testing equipment bushing and the electrical parameter of described balancer structure, drive described compressed air drive arrangement to regulate the size of described balancer structure so that follow-up according to described electrical parameter, until the electrical parameter that described electrical parameter measuring unit measures is in desired extent.
In a preferred embodiment, described device also comprises controller, be connected with electrical parameter measuring unit with described compressed air drive arrangement, for receiving the electrical parameter that described electrical parameter measuring unit measures, and drive described compressed air drive arrangement to regulate the size of described balancer structure according to described electrical parameter, until the electrical parameter that described electrical parameter measuring unit measures is in desired extent.
In a preferred embodiment, described balancer structure comprises top grading ring and bottom grading ring, and wherein, described bottom grading ring is near the hot end of the bushing of described testing equipment.
In a preferred embodiment, described top grading ring and bottom grading ring are made by macromolecular material fusion semiconductor material, and semiconductor material and the surface metal material that mix on surface can be in equivalent noble potentials under testing equipment operating voltage.
In a preferred embodiment, in the time that described testing equipment participates in 500KV grade and the electric power mutual-inductor error test below 500KV grade, described controller drives described compressed air drive arrangement to inflate to described bottom grading ring; In the time that described testing equipment participates in 1000KV grade and electric power mutual-inductor error test more than 1000KV grade, the pipeline that described controller drives described compressed air drive arrangement to be arranged in bushing insulation course inside through spiral fashion regulates the air pressure inside of described bottom grading ring and top grading ring.
In a preferred embodiment, the gas channel being connected with compressed air drive arrangement in described bushing comprises the first gas channel being connected with described bottom grading ring and the second gas channel being connected with described top grading ring.
In a preferred embodiment, described electrical parameter measuring unit comprises: partial discharge current sensor, field intensity sniffer and voltage sensor;
Wherein, described partial discharge current sensor is arranged on described balancer structure, for measuring the current differential value of described balancer structure, thereby indirectly measures the discharge capacity size of described balancer structure;
Described field intensity sniffer is arranged on described balancer structure, for measuring the electric field intensity at described balancer structure space outerpace preset distance place;
Described voltage sensor is connected with described testing equipment, for measuring the above earth potential value of main pressure side of described testing equipment.
In a preferred embodiment, described controller comprises arithmetic and control unit and logic controller, the magnitude of voltage of discharge capacity size, the electric field intensity of balancer structure outside and the main pressure side of testing equipment of the balancer structure that described arithmetic and control unit and logic controller measure described electrical parameter measuring unit is weighted and computing, simulate the state parameter of described balancer structure, and drive described compressed air drive arrangement to regulate the size of described balancer structure according to described state parameter.
In a preferred embodiment, described balancer structure is connected with the hot end of the bushing of described testing equipment with connecting link by ring flange.
As can be seen here, the self-adaptation pressure-equalizing device that the utility model embodiment provides is measured relevant electrical parameter by electrical parameter measuring unit, and adjusted the size of balancer structures according to these electrical parameter self-adaptations by controller, so that balancer structure meets the equal pressure request of the hot end of testing equipment, this just makes the initial volume of whole self-adaptation pressure-equalizing device needn't be very large, convenient transport, when being installed to the size that can adjust according to actual conditions self-adaptation balancer structure behind the place needing, needn't need again balancer structure to assemble temporarily.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of an angle of the self-adaptation pressure-equalizing device that Fig. 1 provides for the utility model;
Fig. 2 is the schematic diagram of another angle of this self-adaptation pressure-equalizing device.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of self-adaptation pressure-equalizing device, and this self-adaptation pressure-equalizing device is for the local highfield in tip of shield test reactor equipment hot end.This testing equipment is the testing equipment using in the test of alternating electromotive force voltage transformer error, for example, comprise standard mutual inductor, stepup transformer etc.
Fig. 1 is the schematic diagram of an angle of self-adaptation pressure-equalizing device provided by the invention, and Fig. 2 is the schematic diagram of another angle of this self-adaptation pressure-equalizing device.Please be simultaneously referring to Fig. 1 and Fig. 2, this self-adaptation pressure-equalizing device comprises balancer structure 6, compressed air drive arrangement 1 and electrical parameter measuring unit.
The dimension adjustable of balancer structure 6, and be arranged on the hot end 10 of bushing 14 of testing equipment 3.This balancer structure 6 is for shielding the local highfield in tip of this hot end 10.In practice, this balancer structure 6 can comprise top grading ring 7 and bottom grading ring 4.Wherein bottom grading ring 4 is near the hot end 10 of the bushing 14 of testing equipment 3.In order to realize the dimension adjustable of balancer structure 6, top grading ring 7 and bottom grading ring 4 can be all made up of macromolecular material fusion semiconductor material, and surface all scribbles metal material.Can ensure like this shielding characteristic of top grading ring 7 and bottom grading ring 4, can also ensure that the two is collapsible and expand, realize the adjusting of diameter.
Compressed air drive arrangement 1 is connected with testing equipment 3, communicates, to regulate the size of balancer structure 6 by inflating and exitting by the gas channel (not shown) in bushing 14 with balancer structure 6.In the time that balancer structure 6 comprises top grading ring 7 and bottom grading ring 4, compressed air drive arrangement can be controlled respectively the inflation/deflation state of bottom grading ring 4 and top grading ring 7, like this, can adjust flexibly according to the needs of actual tests situation the scheme of inflation/deflation.For example, in the time that testing equipment 3 participates in 500KV grade and the electric power mutual-inductor error test below 500KV grade, can only inflate to bottom grading ring 4 by drive compression air driven device 1, make bottom grading ring 4 in inflated condition, and top grading ring 7 is in non-inflated state, can realize so almost only using bottom grading ring 4 to play a role; In the time that testing equipment 3 participates in 1000KV grade and electric power mutual-inductor error test more than 1000KV grade, can inflate to bottom grading ring 4 and top grading ring 7 by drive compression air driven device 1, make top grading ring 7 and bottom grading ring 4 all in inflated condition, allow bottom grading ring 4 and top grading ring 7 all play a role.Above-mentionedly can complete in several ways the driving of compressed air drive arrangement 1.As by way of manual operation it driven.
In practice, the gas channel being connected with compressed air drive arrangement 1 in bushing 14 can comprise the first gas channel being connected with bottom grading ring 4 and the second gas channel being connected with top grading ring 7, compressed air drive arrangement 1 is by inflation and the deflation status of the first gas channel control bottom grading ring 4, and compressed air drive arrangement 1 is by inflation and the deflation status of the second gas channel control top grading ring 7.
Balancer structure 6 can be connected with the hot end 10 of the bushing 14 of testing equipment 3 with connecting link 11 by ring flange 8, particularly, thus ring flange 8 be divided into the blue dish of top isostatic pressing and and isostatic pressing blue dish in bottom is installed on respectively connecting link 11 and fixation is played at hot end 10 tops; Ring flange 8 is designed with semi-circular bracket for bracketing and balancer structure is installed.When transportation, whole pressure-equalizing device is interconnected and fixed to reduce the height of whole equipment by top isostatic pressing is blue with hot end, and in the time that test is used, is interconnected and fixed the safe insulation distance that keeps enough by bottom isostatic pressing is blue with hot end.
In practice, the measured electrical parameter of electrical parameter measuring unit can be selected according to the needs of working control, and correspondingly the included device of electrical parameter measuring unit and the position of installing separately thereof arrange with regard to needs are corresponding.For example, in the present embodiment, electrical parameter measuring unit comprises partial discharge current sensor 5, field intensity sniffer 9 and voltage sensor 2.Wherein, partial discharge current sensor 5 is arranged on balancer structure 6, for measuring the current differential value of balancer structure, and then indirectly measures the discharge capacity size of balancer structure 6, the discharge scenario of reflection balancer structure 6.Field intensity sniffer 9 is arranged on balancer structure 6, for measuring the electric field intensity at balancer structure 6 space outerpace preset distance places, thus the effect of the mask voltage of reflection balancer structure 6, and as the reference value that prevents electric discharge and arc protection.Voltage sensor 2 is connected with testing equipment 3, for measuring the above earth potential value of main pressure side of testing equipment 3.
The electrical parameter of measuring according to electrical parameter measuring unit, operating personnel can drive accordingly to compressed air drive arrangement 1, to regulate the size of balancer structure 6.
For raising the efficiency, apparatus of the present invention also comprise controller, this controller can comprise arithmetic and control unit 12 and logic controller 13, to complete respectively calculation function and the logic function in controller function, the magnitude of voltage of discharge capacity size, the electric field intensity of balancer structure 6 outsides and the main pressure side of testing equipment 3 of the balancer structure 6 that electrical parameter measuring unit is measured is weighted and computing, simulate the state parameter of balancer structure 6, and regulate the size of balancer structure 6 according to state parameter drive compression air driven device 1.
As can be seen here, the self-adaptation pressure-equalizing device that the embodiment of the present invention provides is measured relevant electrical parameter by electrical parameter measuring unit, and adjusted the size of balancer structures according to these electrical parameter self-adaptations by controller, so that balancer structure meets the equal pressure request of the hot end of testing equipment, this just makes the initial volume of whole self-adaptation pressure-equalizing device needn't be very large, convenient transport, when being installed to the size that can adjust according to actual conditions self-adaptation balancer structure behind the place needing, needn't need again balancer structure to assemble temporarily.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a self-adaptation pressure-equalizing device, for the local highfield in tip of shield test reactor equipment hot end, is characterized in that, comprising:
The balancer structure of dimension adjustable, is arranged on the hot end of the bushing of described testing equipment, and shields the local highfield in tip of this hot end;
Compressed air drive arrangement, is connected with described testing equipment, and communicates with described balancer structure by the gas channel in described bushing, to regulate the size of described balancer structure by inflating and exitting;
Electrical parameter measuring unit, for measuring the hot end of described testing equipment bushing and the electrical parameter of described balancer structure, drive described compressed air drive arrangement to regulate the size of described balancer structure so that follow-up according to described electrical parameter, until the electrical parameter that described electrical parameter measuring unit measures is in desired extent.
2. self-adaptation pressure-equalizing device as claimed in claim 1, is characterized in that, described balancer structure comprises top grading ring and bottom grading ring, and wherein, described bottom grading ring is near the hot end of the bushing of described testing equipment.
3. self-adaptation pressure-equalizing device as claimed in claim 2, is characterized in that, described top grading ring and bottom grading ring are made by macromolecular material fusion semiconductor material, and surface scribbles metal material.
4. self-adaptation pressure-equalizing device as claimed in claim 2 or claim 3, is characterized in that, in the time that described testing equipment participates in 500KV grade and the electric power mutual-inductor error test below 500KV grade, described compressed air drive arrangement is for inflating to described bottom grading ring; In the time that described testing equipment participates in 1000KV grade and electric power mutual-inductor error test more than 1000KV grade, described compressed air drive arrangement is for inflating to described bottom grading ring and top grading ring.
5. self-adaptation pressure-equalizing device as claimed in claim 4, it is characterized in that, the gas channel being connected with compressed air drive arrangement in described bushing comprises the first gas channel being connected with described bottom grading ring and the second gas channel being connected with described top grading ring.
6. self-adaptation pressure-equalizing device as claimed in claim 1, is characterized in that, described electrical parameter measuring unit comprises: partial discharge current sensor, field intensity sniffer and voltage sensor;
Wherein, described partial discharge current sensor is arranged on described balancer structure, for measuring the current differential value of described balancer structure, thereby indirectly measures the discharge capacity size of described balancer structure;
Described field intensity sniffer is arranged on described balancer structure, for measuring the electric field intensity at described balancer structure space outerpace preset distance place;
Described voltage sensor is connected with described testing equipment, for measuring the above earth potential value of main pressure side of described testing equipment.
7. self-adaptation pressure-equalizing device as claimed in claim 1, is characterized in that, described balancer structure is connected and keeps equipotential with the hot end of the bushing of described testing equipment with connecting link by ring flange.
8. self-adaptation pressure-equalizing device as claimed in claim 1, it is characterized in that, described device also comprises controller, be connected with electrical parameter measuring unit with described compressed air drive arrangement, for receiving the electrical parameter that described electrical parameter measuring unit measures, and drive described compressed air drive arrangement to regulate the size of described balancer structure according to described electrical parameter, until the electrical parameter that described electrical parameter measuring unit measures is in desired extent.
9. self-adaptation pressure-equalizing device as claimed in claim 8, it is characterized in that, described controller comprises arithmetic and control unit and logic controller, the magnitude of voltage of discharge capacity size, the electric field intensity of balancer structure outside and the main pressure side of testing equipment of the balancer structure that described arithmetic and control unit and logic controller measure described electrical parameter measuring unit is weighted and computing, simulate the state parameter of described balancer structure, and drive described compressed air drive arrangement to regulate the size of described balancer structure according to described state parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287489.0U CN203881814U (en) | 2014-05-30 | 2014-05-30 | Adaptive voltage equalizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287489.0U CN203881814U (en) | 2014-05-30 | 2014-05-30 | Adaptive voltage equalizing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881814U true CN203881814U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420287489.0U Expired - Lifetime CN203881814U (en) | 2014-05-30 | 2014-05-30 | Adaptive voltage equalizing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203808A (en) * | 2014-05-30 | 2015-12-30 | 国家电网公司 | Self-adaptive voltage-sharing device |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN110010314A (en) * | 2019-04-12 | 2019-07-12 | 平顶山正植科技有限公司 | Super extra-high voltage grading ring and its production technology |
-
2014
- 2014-05-30 CN CN201420287489.0U patent/CN203881814U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203808A (en) * | 2014-05-30 | 2015-12-30 | 国家电网公司 | Self-adaptive voltage-sharing device |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN110010314A (en) * | 2019-04-12 | 2019-07-12 | 平顶山正植科技有限公司 | Super extra-high voltage grading ring and its production technology |
| CN110010314B (en) * | 2019-04-12 | 2020-08-04 | 平顶山正植科技有限公司 | Ultra-high voltage grading ring and production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141015 Effective date of abandoning: 20180731 |
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| AV01 | Patent right actively abandoned |