CN107544000A - A kind of plate electrode type standard capacitor and outside method for equalizing voltage - Google Patents
A kind of plate electrode type standard capacitor and outside method for equalizing voltage Download PDFInfo
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- CN107544000A CN107544000A CN201610499288.0A CN201610499288A CN107544000A CN 107544000 A CN107544000 A CN 107544000A CN 201610499288 A CN201610499288 A CN 201610499288A CN 107544000 A CN107544000 A CN 107544000A
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Abstract
The present invention proposes a kind of plate electrode type standard capacitor and outside method for equalizing voltage.By on the inwall of plate electrode type standard capacitor insulating sleeve outer barrel, multilayer screening electrodes plate is co-axially mounted with upper/lower electrode, and it is connected between adjacent two layers screening electrodes plate with insulating materials, artificially connected between standard capacitor high-field electrode and grounding electrode multiple capacitors, ensured that the voltage's distribiuting on insulation outer barrel becomes to pressing.The present invention improves insulation characterisitic outside plate electrode structures standard capacitor on the basis of original standard capacitor, ensure that capacitor integrally good temperature characterisitic and the linearity, has determined basis for the follow-up surge voltage calibration test voltage range pad that expands.Described device includes：Insulating sleeve outer barrel, Top electrode, bottom electrode and hollow cylindrical screening electrodes unit, wherein hollow cylindrical screening electrodes unit include the insulating materials for being used as connection between multilayer screening electrodes plate and adjacent screening electrodes plate.
Description
Technical field
The present invention relates to field of power, and more particularly, to a kind of plate electrode type standard capacitor and outside
Portion's method for equalizing voltage.
Background technology
Nowadays, with the continuous development of UHV transmission technology and the raising of transmission line of electricity voltage class, impact electricity
The voltage class of pressure generator and the divider for measuring impulse voltage generator output voltage also greatly improves, to meet to set
Standby surge voltage resistance test requirement.Provincial Electric Power Research Institute establishes 3600kV impulse voltage test measurement substantially
System, UHV AC Test Base, UHV DC test base station and High aititude base etc. is even more to establish up to 7500kV
Impulse voltage test measuring system.But the divider used in the measuring system of impulse voltage test at present is due to by canonical measure
The voltage limitation of system, can only carry out the partial pressure in the 1000kV voltage ranges of calibration acquisition impulse voltage divider within 1000kV
Than accuracy of measurement of the divider being so calibrated in more than 1000kV voltage ranges cannot be guaranteed.
Due to good characteristics such as the good resistance stability of resitstance voltage divider, less temperatures coefficient, the mesh in 1000kV
Standard voltage divider uses resitstance voltage divider more used by preceding impact voltage calibration experiment, but in 1000kV voltage above resistance point
Depressor can have serious heating effect under high pressure, therefore more than 1000kV voltage ranges can not use resitstance voltage divider conduct
Standard voltage divider is, it is necessary to find a kind of fuel factor is small, the linearity is good divider as the mark in more than 1000kV voltage ranges
Quasi- divider, for extending Impulse Voltage Measuring Systems calibration voltage scope.In view of the good voltage linear of standard capacitor
Degree, stable capacitance characteristic, devise a kind of divider based on standard capacitor, both measurable power-frequency voltage or measurable
Surge voltage, it is very suitable for carrying out live high-pressure calibration experiment, two kinds of purposes of a set of equipment, greatly reduces transport burden.
The advantages of plate electrode structures standard capacitor divider is simple in construction, and easy for installation, height pressure arm electric capacity uses
Identical plate material, it is positioned in identical gas medium environment, there is identical temperature characterisitic and dielectric loss characteristic, but
It is that the voltage landing that outer barrel is highly located that correspondingly insulated at high-low pressure electrode gap is very violent, electric-field intensity is apparently higher than sleeve pipe
Dielectric surface flashover field strength, it is therefore desirable to take the capacitive divider and effectively press mode, ensure the integral insulation of divider
Energy.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of plate electrode type standard capacitor and outside method for equalizing voltage.
According to an aspect of the present invention, there is provided a kind of flat standard capacitor, including：Insulating sleeve outer barrel, upper electricity
Pole, bottom electrode and hollow cylindrical screening electrodes unit.Preferably, the hollow cylindrical screening electrodes unit is coaxially pacified
Around Top electrode and bottom electrode, include from top to bottom in longitudinal space in the cylinder of the hollow cylindrical screening electrodes unit
And coaxial mounted multilayer screening electrodes plate from the inside to the outside, and outermost screening electrodes plate is 1 piece, described outermost to press
Battery lead plate is fixed on above and below the inner surface of insulating sleeve outer barrel vertical corresponding to the interstitial site of two plate electrodes with insulation column
To on the glass-reinforced plastic material of height, wherein every layer of internal screening electrodes plate gas gap center between Top electrode and bottom electrode
Line is that axial symmetry is distributed as top half and the latter half, passes through insulation blanket stud and insulating materials between each layer screening electrodes plate
Adjacent one layer of screening electrodes plate is reconnected after connection.
Preferably, the Top electrode and bottom electrode are face formula plate electrode, and the inside of the standard capacitor is filled
Full SF6 gases, the pressure of the SF6 gases are at least twice of atmospheric pressure.
Preferably, the Top electrode is high-field electrode, and bottom electrode includes suspension electrode and grounding electrode, wherein, high-tension electricity
High voltage arm capacitor of the capacitance as standard capacitor between pole and suspension electrode, the capacitance between suspension electrode and grounding electrode
Low-voltage arm electric capacity as standard capacitor.
Preferably, the high-field electrode is circular configuration.
Preferably, the suspension electrode is the circular electrode with high-field electrode face, and is supported by epoxy pillar.
Preferably, the grounding electrode is the round loop electrode with suspension electrode concentric.
Preferably, the material of the high-field electrode, suspension electrode and grounding electrode is stainless steel.
Preferably, the number of plies of the screening electrodes plate is calculated by simulation software.
Preferably, the thickness of every layer of screening electrodes plate is 2mm, and the insulating materials for being 2mm with thickness is filled two layers
Space between screening electrodes plate.
Preferably, lead angle and grinding process are carried out to the marginal portion of the screening electrodes plate and insulating materials.
Preferably, the material of the screening electrodes plate is stainless steel.
According to another aspect of the present invention, there is provided a kind of outside method for equalizing voltage of plate electrode type standard capacitor, including：
Determine the voltage's distribiuting of position in longitudinal height in the cylinder of plate electrode type standard capacitor；
Calculate the number of plies of screening electrodes plate and the size of every layer of screening electrodes plate of hollow cylindrical screening electrodes unit；With
And
Hollow cylindrical screening electrodes unit is installed in the insulating sleeve outer barrel of plate electrode type standard capacitor.
Preferably, suspension electrode is connected with signal gathering unit wherein in standard capacitor, and surveyed low pressure end signal is passed
Personal computer PC end is transported to, carries out waveform analysis.
Preferably, the number of plies of the screening electrodes plate is calculated by simulation software.
Preferably, hollow cylindrical screening electrodes unit is co-axially mounted on around Top electrode and bottom electrode, the sky
Include from top to bottom in longitudinal space in the cylinder of heart cylindrical shape screening electrodes unit and coaxial mounted multilayer is pressed from the inside to the outside
Battery lead plate.
Preferably, the outermost screening electrodes plate of the hollow cylindrical screening electrodes unit is 1 piece, described outermost
Screening electrodes plate is fixed on above and below the inner surface of insulating sleeve outer barrel corresponding to the interstitial site of two plate electrodes with insulation column
Longitudinal height glass-reinforced plastic material on, wherein every layer of internal screening electrodes plate gas gap between Top electrode and bottom electrode
Center line is that axial symmetry is distributed as top half and the latter half, passes through insulation blanket stud and insulation between each layer screening electrodes plate
Adjacent one layer of screening electrodes plate is reconnected after material connection.
Set screening electrodes function as artificially inside standard capacitor in the range of longitudinal space be provided with it is multiple
Capacitor is series between the high-field electrode of standard capacitor divider and grounding electrode：Between high-field electrode and screening electrodes plate
Electric capacity between electric capacity, adjacent screening electrodes plate, the capacitance size between pressure pole plate and grounding electrode determine each layer
Potential distribution on screening electrodes plate so that the distribution of voltage from top to bottom tends to press on the longitudinal direction of space in cylinder, Jin Erbao
Voltage's distribiuting approximation on card insulation outer barrel can be optimized for straight line, ensure the at utmost utilization of insulating sleeve, can be with
The effectively external dimensions of control standard capacitor divider.
Plate electrode type standard capacitor that the outside that the present invention designs is pressed and plate electrode type standard capacitor it is outer
Portion's method for equalizing voltage, it is simple in construction to remain standard capacitor, easy for installation, and height pressure arm electric capacity uses identical pole plate material
Material, is positioned in identical gas medium environment, has identical temperature characterisitic and dielectric loss characteristic.And on this basis,
The insulation characterisitic outside plate electrode type standard capacitor is improved, ensure that capacitor integrally good temperature characterisitic and linear
Degree, basis is determined for the follow-up surge voltage calibration test voltage range pad that expands.At the same time, the present invention is using in insulating cylinder
The mode of multilayer screening electrodes is installed, the entirety of capacitor is greatly reduced in the case where ensureing the requirement of capacitor integral insulation performance
Size, transport is easily installed, while reduces manufacturing cost.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the plate electrode type standard capacitor without screening electrodes；
Fig. 2 is the simple side view of plate electrode type standard capacitor with screening electrodes；
Fig. 3 is the flow chart of method for equalizing voltage outside the device according to the preferred embodiment for the present invention.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
The plate electrode type standard capacitor pressed the invention provides a kind of outside and a kind of plate electrode type standard
The outside method for equalizing voltage of capacitor, it is extremely uneven mainly for voltage's distribiuting on current plate electrode type standard capacitor insulation outer barrel
It is even to cause the problem of regional area electric field is excessive on insulating sleeve.In the good electricity of existing plate electrode type standard capacitor divider
On the basis of pressing the characteristics such as the linearity, stable capacitance, using multilayer screening electrodes plate, plate electrode type standard electric is improved
The insulation characterisitic of external container.
Fig. 1 is the plate electrode type standard capacitor side view without screening electrodes.As shown in figure 1, existing flat board electricity
Pole formula standard capacitor divider 100 by high-voltage connection 1, damping resistance 2, grading ring 3, insulating sleeve upper flange 4, insulating sleeve outside
Wall 5, high-field electrode 6, collecting unit 7, grounding electrode 8, suspension electrode 9, insulating supporting 10, suspension electrode insulating supporting 11, absolutely
Edge sleeve pipe lower flange 12 and base 13 form.
Preferably, high-voltage connection 1 and damping resistance 2 are connected with standard capacitor divider 100；Grading ring 3 is coaxially installed on
The top of standard capacitor divider 100, it is connected with insulation sleeve upper flange 4；The top of insulating sleeve outer wall 5 and insulation sleeve upper flange 4
Connection, lower section is connected with insulating sleeve lower flange 12；Base 13 plays supporting ＆ stablizing in bottom.
Preferably, high-field electrode 6 is face formula as the bottom electrode that Top electrode and grounding electrode 8 and suspension electrode 9 form
Plate electrode, and the inside of plate electrode type standard capacitor divider 100 is full of SF6Gas, the SF6The pressure of gas
For at least twice of atmospheric pressure.
Preferably, high voltage arm capacitor of the capacitance between high-field electrode 6 and suspension electrode 9 as capacitive divider, ground connection
Low-voltage arm electric capacity of the capacitance as capacitive divider between electrode 8 and suspension electrode 9.
Preferably, high-field electrode 6 is circular configuration；Suspension electrode 9 is the circular electrode with the face of high-field electrode 6, and by
Insulating supporting 10 is supported, and the bottom of suspension electrode 9 supports that 11 are connected with suspension electrode insulation；Grounding electrode 8 be with
The round loop electrode of the concentric of suspension electrode 9.
Preferably, the material of high-field electrode 6, grounding electrode 8 and suspension electrode 9 is stainless steel.
Preferably, collecting unit 7 is connected with suspension electrode 9, and measured low pressure end signal is transmitted to PC ends.
Existing plate electrode type standard capacitor is simple in construction, easy for installation, but is corresponded at high-low pressure electrode gap exhausted
The voltage landing that edge outer barrel is highly located is very violent, and electric-field intensity is apparently higher than sleeve surface flashover field strength, so to shown in Fig. 1
Device makes improvement, capacitive divider effectively press, the simple side view of device is as shown in Figure 2 after improvement.
Fig. 2 is the simple side view of the capacitive divider with screening electrodes, including：Insulating materials 15 between Top electrode 14, pole plate,
Screening electrodes plate 16, insulating sleeve outer barrel 17 and bottom electrode 18.In insulating sleeve outer barrel 17, Top electrode 14 is high-tension electricity
Pole, it is distributed with the face formula of bottom electrode 18；Screening electrodes plate 16 is hollow cylindrical structure, is co-axially mounted on Top electrode 14 with
Around electrode 18, and multilayer screening electrodes plate is installed from top to bottom and from the inside to the outside in the longitudinal space of insulating coating cylinder 17
16, and outermost screening electrodes plate 16 is 1 piece, it is flat to be fixed on above and below the inner surface of insulating sleeve outer barrel 17 two with insulation column
On the glass-reinforced plastic material of longitudinal height corresponding to the interstitial site of plate electrode, internal every layer screening electrodes plate 16 is with Top electrode
Gas gap center line is that axial symmetry is distributed as top half and the latter half, each equal piezoelectricity of layer between 14 electrodes and bottom electrode 18
Adjacent one layer of screening electrodes plate 16 is reconnected after being connected between pole plate 16 by insulation blanket stud with insulating materials 15.
Preferably, the number of plies of the screening electrodes plate 16 is calculated by simulation software.
Preferably, the thickness of every layer of screening electrodes plate 16 is 2mm, and the insulating materials 15 for being 2mm with thickness is filled
Space between double layer of metal pole plate.
Preferably, lead angle and grinding process are carried out to the marginal portion of screening electrodes plate 16 and insulating materials 15
Preferably, the material of screening electrodes plate 16 is stainless steel.
Fig. 3 shows the flow chart of method for equalizing voltage outside device according to the preferred embodiment of the present invention.As shown in figure 3,
The outside method for equalizing voltage of plate electrode type standard capacitor is since 301.In step 301, plate electrode type standard capacitance is determined
In the cylinder of device in longitudinal height position voltage's distribiuting.Preferably, suspension electrode and signal acquisition list in standard capacitor
Member is connected, and surveyed low pressure end signal is transmitted to personal computer PC end, carries out waveform analysis.
Preferably, in step 302, the number of plies of the screening electrodes plate by calculating determination hollow cylindrical screening electrodes unit
With the size of every layer of screening electrodes plate.Preferably, screening electrodes flaggy number and each screening electrodes board foot are calculated by simulation software
Very little, the simulation software can be virtual reality emulation platform VR-Platform or other simulation softwares with this function.
Preferably, when it is determined that the screening electrodes flaggy number and every layer of screening electrodes board foot of hollow cylindrical screening electrodes unit
After very little, step 303 is carried out.In step 303, hollow cylinder is installed in plate electrode type standard capacitor insulating sleeve outer barrel
Shape screening electrodes unit.Preferably, hollow cylindrical screening electrodes unit is co-axially mounted on the week of Top electrode and bottom electrode
Enclose, including from top to bottom and coaxial mounted from the inside to the outside more in longitudinal space in the cylinder of the hollow cylindrical screening electrodes unit
Layer screening electrodes plate.Preferably, the outermost screening electrodes plate of the screening electrodes unit is 1 piece, described outermost to press
Battery lead plate is fixed on above and below the inner surface of insulating sleeve outer barrel vertical corresponding to the interstitial site of two plate electrodes with insulation column
To on the glass-reinforced plastic material of height, wherein every layer of internal screening electrodes plate gas gap center between Top electrode and bottom electrode
Line is that axial symmetry is distributed as top half and the latter half, passes through insulation blanket stud and insulating materials between each layer screening electrodes plate
Adjacent one layer of screening electrodes plate is reconnected after connection.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms used in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly being defined in addition wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.
Claims (16)
1. the plate electrode type standard capacitor that a kind of outside is pressed, including：Insulating sleeve outer barrel, Top electrode, bottom electrode and
Hollow cylindrical screening electrodes unit, it is characterised in that：
The hollow cylindrical screening electrodes unit is co-axially mounted on around Top electrode and bottom electrode, and the hollow cylindrical is equal
Include in the cylinder of piezoelectricity pole unit in longitudinal space from top to bottom and coaxial mounted multilayer screening electrodes plate, and most from the inside to the outside
The screening electrodes plate of outer layer is 1 piece, and the outermost screening electrodes plate is fixed in insulating sleeve outer barrel with insulation column
On the glass-reinforced plastic material of longitudinal height above and below surface corresponding to the interstitial site of two plate electrodes, wherein internal every layer is pressed
Battery lead plate gas gap center line between Top electrode and bottom electrode is distributed as top half and the latter half, each layer as axial symmetry
Adjacent one layer of screening electrodes plate is reconnected after being connected between screening electrodes plate by insulation blanket stud with insulating materials.
2. standard capacitor according to claim 1, it is characterised in that the Top electrode and bottom electrode are face formula flat board
Electrode, and the inside of the standard capacitor is full of SF6Gas, the SF6The pressure of gas is at least the two of atmospheric pressure
Times.
3. standard capacitor according to claim 1, it is characterised in that the Top electrode is high-field electrode, and bottom electrode includes
Suspension electrode and grounding electrode, wherein, high-voltage arm electricity of the capacitance as standard capacitor between high-field electrode and suspension electrode
Hold, low-voltage arm electric capacity of the capacitance as standard capacitor between suspension electrode and grounding electrode.
4. standard capacitor according to claim 3, it is characterised in that the high-field electrode is circular configuration.
5. standard capacitor according to claim 3, it is characterised in that the suspension electrode is the circle with high-field electrode face
Shape electrode, and supported by epoxy pillar.
6. standard capacitor according to claim 3, it is characterised in that the grounding electrode be and suspension electrode concentric
Round loop electrode.
7. standard capacitor according to claim 3, it is characterised in that the high-field electrode, suspension electrode and grounding electrode
Material be stainless steel.
8. standard capacitor according to claim 1, it is characterised in that the screening electrodes are calculated by simulation software
The number of plies of plate.
9. standard capacitor according to claim 1, it is characterised in that the thickness of every layer of screening electrodes plate is 2mm, and
The insulating materials for being 2mm with thickness fills the space between two layers of screening electrodes plate.
10. standard capacitor according to claim 1, it is characterised in that to the side of the screening electrodes plate and insulating materials
Edge point carries out lead angle and grinding process.
11. standard capacitor according to claim 8, it is characterised in that the material of screening electrodes plate is stainless steel.
12. a kind of outside method for equalizing voltage of plate electrode type standard capacitor, comprises the following steps：
Step 1, the voltage's distribiuting of each opening position in longitudinal height in the cylinder of plate electrode type standard capacitor is determined；
Step 2, the number of plies of screening electrodes plate and the size of every layer of screening electrodes plate of hollow cylindrical screening electrodes unit are calculated；
And
Step 3, hollow cylindrical screening electrodes unit is installed in the insulating sleeve outer barrel of plate electrode type standard capacitor.
13. according to the method for claim 12, in step 1, suspension electrode and signal gathering unit in standard capacitor
It is connected, surveyed low pressure end signal is transmitted to personal computer PC end, carries out waveform analysis.
14. according to the method for claim 12, in step 2, the screening electrodes plate is calculated by simulation software
The number of plies.
It is 15. according to the method for claim 12, in step 3, hollow cylindrical screening electrodes unit is axially mounted on
Include around Top electrode and bottom electrode, in the cylinder of the hollow cylindrical screening electrodes unit in longitudinal space from top to bottom and
Coaxial mounted multilayer screening electrodes plate from the inside to the outside.
16. according to the method for claim 12, in step 3, the outermost screening electrodes plate of screening electrodes unit
For 1 piece, the outermost screening electrodes plate is fixed on two flat boards electricity above and below the inner surface of insulating sleeve outer barrel with insulation column
On the glass-reinforced plastic material of longitudinal height corresponding to the interstitial site of pole, wherein every layer of internal screening electrodes plate with Top electrode and
Gas gap center line is that axial symmetry is distributed as top half and the latter half between bottom electrode, between each layer screening electrodes plate
Adjacent one layer of screening electrodes plate is reconnected after being connected by insulation blanket stud with insulating materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610499288.0A CN107544000A (en) | 2016-06-29 | 2016-06-29 | A kind of plate electrode type standard capacitor and outside method for equalizing voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610499288.0A CN107544000A (en) | 2016-06-29 | 2016-06-29 | A kind of plate electrode type standard capacitor and outside method for equalizing voltage |
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| CN107544000A true CN107544000A (en) | 2018-01-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406914A (en) * | 2018-12-13 | 2019-03-01 | 国网福建省电力有限公司 | High voltage electric field environmental laboratory experimental rig and method |
| CN112768233A (en) * | 2020-12-29 | 2021-05-07 | 西北核技术研究所 | High-voltage megavolt coaxial-flat plate mixed type low-inductance pulse capacitor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409183A (en) * | 2014-11-28 | 2015-03-11 | 武汉理工大学 | Composite insulator with built-in capacitance voltage-sharing screen |
| CN205176097U (en) * | 2015-10-29 | 2016-04-20 | 中国电力科学研究院 | Capacitive divider |
-
2016
- 2016-06-29 CN CN201610499288.0A patent/CN107544000A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409183A (en) * | 2014-11-28 | 2015-03-11 | 武汉理工大学 | Composite insulator with built-in capacitance voltage-sharing screen |
| CN205176097U (en) * | 2015-10-29 | 2016-04-20 | 中国电力科学研究院 | Capacitive divider |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406914A (en) * | 2018-12-13 | 2019-03-01 | 国网福建省电力有限公司 | High voltage electric field environmental laboratory experimental rig and method |
| CN109406914B (en) * | 2018-12-13 | 2024-02-09 | 国网福建省电力有限公司 | Laboratory test device and method for high-voltage electric field environment |
| CN112768233A (en) * | 2020-12-29 | 2021-05-07 | 西北核技术研究所 | High-voltage megavolt coaxial-flat plate mixed type low-inductance pulse capacitor |
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Application publication date: 20180105 |