CN209198523U - A kind of capacitance-voltage-distributing type residual voltage sensor - Google Patents
A kind of capacitance-voltage-distributing type residual voltage sensor Download PDFInfo
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- CN209198523U CN209198523U CN201821442895.4U CN201821442895U CN209198523U CN 209198523 U CN209198523 U CN 209198523U CN 201821442895 U CN201821442895 U CN 201821442895U CN 209198523 U CN209198523 U CN 209198523U
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Abstract
The utility model relates to voltage transformers, electronic mutual inductor technical field, in particular a kind of capacitance-voltage-distributing type residual voltage sensor, it include fixed bracket, support bracket fastened basal plane is fixedly connected to three voltage sensors, voltage sensor includes grounding screw, grounding screw is socketed with external shield cylinder far from the outer wall of support bracket fastened one end, the inner wall of external shield cylinder is equipped with low tension volumetric cylinder, the bottom of low tension volumetric cylinder is equipped with threaded hole, the inner wall of threaded hole is equipped with connection bolt, connection bolt, which is worn, is connected to U2 output wiring terminal, the outer wall of external shield cylinder and the inside one-piece casting of low tension volumetric cylinder have insulating materials, insulating materials is equipped with high pressure close to the inside of external shield cylinder port part and presses shielding case, geometric center at the top of insulating materials is threaded with high-field electrode, the high-field electrode is located at the outside of insulating materials One end is welded with conducting wire.The utility model makes it have insulation performance and temperature stability by the design of the capacitor C1 of capacitive divider.
Description
Technical field
The utility model relates to arrive voltage transformer, electronic mutual inductor technical field, special capacitance partial pressure electronic type electricity
Press mutual inductor neck.
Background technique
As traditional electric substation is more and more obvious to the trend that digital transformer substation changes, once set in digital transformer substation
The electronic mutual inductor playing an important role in standby increasingly draws attention.Electronic mutual inductor be mutual inductor sensing accuracy,
The inevitable outcome of transmission fiberization and output digital development trend.Zero sequential potential transformer is to generate zero sequence in electric system to connect
It is used cooperatively when earth-current with protective relaying device or signal, acts device element, realize protection or monitoring.At present in distribution
Net is all made of conventional three-phase pentastyle voltage transformer, has volume big, will lead to equipment burnout after second short circuit, cause product
Quality accident, electronic type voltage transformer have it is small in size, it is light-weight, it is easy for installation, be not in ferromagnetic resonance without cored
It is the renewal product of current power system voltage measurement and protection and caused by second short circuit the problems such as equipment damage.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of capacitance-voltage-distributing type proposed
Residual voltage sensor.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of capacitance-voltage-distributing type residual voltage sensor includes fixed bracket, and the support bracket fastened basal plane is fixed
There are three voltage sensors for connection, and the voltage sensor includes grounding screw, and the grounding screw is far from support bracket fastened
The outer wall of one end is socketed with external shield cylinder, and the inner wall of the external shield cylinder is equipped with low tension volumetric cylinder, the bottom of the low tension volumetric cylinder
Portion is equipped with threaded hole, and the inner wall of the threaded hole is equipped with connection bolt, and the connection bolt, which is worn, is connected to U2 output wiring terminal, institute
The inside one-piece casting of the outer wall and low tension volumetric cylinder of stating external shield cylinder has insulating materials, and the insulating materials is close to external shield
The inside of cylinder port part is equipped with high pressure and presses shielding case, and the geometric center at the top of the insulating materials is threaded with high-voltage electricity
Pole, one end that the high-field electrode is located at the outside of insulating materials are welded with conducting wire, on three voltage sensors
The end of three conducting wires is respectively equipped with electrode tip A, electrode tip B and electrode tip C, on three voltage sensors
Three high-field electrodes, high pressures press shielding case, low tension volumetric cylinder and insulating materials separately constitute capacitor C1a, capacitor C1b and
Capacitor C1c, the capacitor C1a, capacitor C1b and capacitor C1c the equal linearly connected in one end have secondary capacitor C2, the secondary capacitor
One end linearly connected of C2 has ground connection.
Preferably, one end of the grounding screw is fixedly connected on support bracket fastened basal plane.
Preferably, there are gaps between the external shield cylinder and low tension volumetric cylinder, and exhausted filled with the positioning of PMP insulating materials
Edge.
Preferably, the end of the connection bolt is located at the inside of grounding screw.
Preferably, the U2 output wiring terminal is between connection bolt and low tension volumetric cylinder, the U2 output connection
Terminal is L-type.
Preferably, one end of the high-field electrode passes through high pressure and presses shielding case, and extends to the inside of low tension volumetric cylinder.
Preferably, one end difference linearly connected of the electrode tip A, electrode tip B and electrode tip C are in capacitor C1a, capacitor
C1b and capacitor C1c.
Preferably, the voltage sensor internal electrode connects external electrode and external shield cylinder is all made of a kind of temperature expansion system
The alloy material that number changes very little is process.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model makes it have insulation performance by the design of the capacitor C1 of capacitive divider and temperature is stablized
Property.
2, the utility model, when partial pressure, internal electric current is substantially capacitive reactive power electric current, will not generate joule's heat energy,
It is higher that longtime running will not lead to problems such as insulation ag(e)ing puncture security performance because of fever.
3, three voltage sensors, the outer wall and low tension of external shield cylinder are fixedly connected to by support bracket fastened basal plane
The inside one-piece casting of volumetric cylinder has insulating materials, and residual voltage sensor is formed after combination.
In the utility model, it is not directed to part in the device and is the same as those in the prior art or can be used the prior art and be subject to reality
Existing, when the utility model divides, internal electric current is substantially capacitive reactive power electric current, will not generate joule's heat energy, longtime running
Insulation ag(e)ing will not be led to problems such as to puncture security performance because of fever higher.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of capacitance-voltage-distributing type residual voltage sensor whole structural schematic diagram；
Fig. 2 be the utility model proposes a kind of capacitance-voltage-distributing type residual voltage sensor part structural schematic diagram；
Fig. 3 be the utility model proposes a kind of capacitance-voltage-distributing type residual voltage sensor part structural schematic diagram.
In figure: 1 fixed bracket, 2 voltage sensors, 3 external shield cylinders, 4 low tension volumetric cylinders, 5 threaded holes, 6 connection bolts,
7U2 output wiring terminal, 8 insulating materials, 9 high pressures press shielding case, 10 high-field electrodes, 11 conducting wires, 12 electrode tip A, 13, electrode
Hold B, 14 electrode tip C, 15 capacitor C1a, 16 capacitor C1b, 17 capacitor C1c, 18 2 capacitor C2,19 ground connection, 20 grounding screws.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Fig. 1-3 is please referred to, a kind of capacitance-voltage-distributing type residual voltage sensor includes fixed bracket 1, the fixed bracket
1 basal plane is fixedly connected to three voltage sensors 2, and the voltage sensor 2 includes grounding screw 20, the ground connection spiral shell
The outer wall of the one end of column 20 far from fixed bracket 1 is socketed with external shield cylinder 3, and the inner wall of the external shield cylinder 3 is equipped with low-voltage capacitance
Cylinder 4, the bottom of the low tension volumetric cylinder 4 are equipped with threaded hole 5, and the inner wall of the threaded hole 5 is equipped with connection bolt 6, the wiring
Bolt 6, which is worn, is connected to U2 output wiring terminal 7, and the outer wall of the external shield cylinder 3 and the inside one-piece casting of low tension volumetric cylinder 4 have
Insulating materials 8, the insulating materials 8 are equipped with high pressure close to the inside of 3 port part of external shield cylinder and press shielding case 9, the insulation
The geometric center at 8 top of material is threaded with high-field electrode 10, and the high-field electrode 10 is located at the one of the outside of insulating materials 8
End is welded with conducting wire 11, and the end of three conducting wires 11 on three voltage sensors 2 is respectively equipped with electrode tip
A12, electrode tip B13 and electrode tip C14, three high-field electrodes 10, high pressures on three voltage sensors 2 are equal
Pressure shielding case 9, low tension volumetric cylinder 4 and insulating materials 8 separately constitute capacitor C1a15, capacitor C1b16 and capacitor C1c17, the electricity
Hold C1a15, capacitor C1b16 and capacitor C1c17 the equal linearly connected in one end have secondary capacitor C218, the secondary capacitor C218's
One end linearly connected has ground connection 19.
One end of the grounding screw 20 is fixedly connected on the basal plane of fixed bracket 1, the external shield cylinder 3 and low tension
There are gaps between volumetric cylinder 4, and filled with the positioning insulation of PMP insulating materials, the end of the connection bolt 6 is located at grounding screw
20 inside, the U2 output wiring terminal 7 is between connection bolt 6 and low tension volumetric cylinder 4, the U2 output wiring terminal
7 be L-type, and one end of the high-field electrode 10 passes through high pressure and presses shielding case 9, and extends to the inside of low tension volumetric cylinder 4, described
One end difference linearly connected of electrode tip A12, electrode tip B13 and electrode tip C14 are in capacitor C1a15, capacitor C1b16 and capacitor
C1c17, the voltage sensor internal electrode connects external electrode and external shield cylinder 3 is all made of a kind of temperature expansion coefficient variation pole
Small alloy material is process.
The working process of the utility model is as follows: by being located on three voltage sensors 2 in practical work process
Three high-field electrodes 10, high pressures press shielding case 9, low tension volumetric cylinder 4 and insulating materials 8 separately constitute capacitor C1a15,
Capacitor C1b16 and capacitor C1c17, capacitor C1a15, capacitor C1b16 and capacitor C1c17 bear primary side high voltage, secondary capacitor
C218 and ground connection 19 are used as second divided voltage, export secondary voltage, capacitor C1a15, capacitor C1b16 and capacitor C1c17 work as primary side
When three-phase voltage is normal, three groups of capacitance connection neutral point voltages are zero, secondary capacitor C2 Non voltage output, as electrode tip A12, electricity
Extreme B13 is increased with neutral point tie point voltage after any one mutually ground connection of electrode tip C14 three-phase, and secondary capacitor C218 exports zero sequence
Ground voltage；Three voltage sensors 2, the outer wall and low pressure of external shield cylinder 3 are fixedly connected to by the basal plane of fixed bracket 1
The inside one-piece casting of capacitor cylinder 4 has insulating materials 8, and residual voltage sensor is formed after combination.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of capacitance-voltage-distributing type residual voltage sensor includes fixed bracket (1), which is characterized in that the fixed bracket
(1) basal plane is fixedly connected to three voltage sensors (2), and the voltage sensor (2) includes grounding screw (20), institute
The outer wall for stating the one end of grounding screw (20) far from fixed bracket (1) is socketed with external shield cylinder (3), the external shield cylinder (3)
Inner wall is equipped with low tension volumetric cylinder (4), and the bottom of the low tension volumetric cylinder (4) is equipped with threaded hole (5), the threaded hole (5) it is interior
Wall is equipped with connection bolt (6), and the connection bolt (6), which is worn, to be connected to U2 output wiring terminal (7), outside the external shield cylinder (3)
The inside one-piece casting of wall and low tension volumetric cylinder (4) has insulating materials (8), and the insulating materials (8) is close to external shield cylinder (3)
The inside of port part is equipped with high pressure and presses shielding case (9), and the geometric center at the top of the insulating materials (8) is threaded with high pressure
One end of electrode (10), the outside that the high-field electrode (10) is located at insulating materials (8) is welded with conducting wire (11), is located at three institutes
The end for stating three on voltage sensor (2) conducting wires (11) is respectively equipped with electrode tip A(12), electrode tip B(13) and electricity
Extreme C(14), three high-field electrodes (10), high pressures being located on three voltage sensors (2) press shielding case
(9), low tension volumetric cylinder (4) and insulating materials (8) separately constitute capacitor C1a(15), capacitor C1b(16) and capacitor C1c(17), institute
State capacitor C1a(15), capacitor C1b(16) and capacitor C1c(17) the equal linearly connected in one end have secondary capacitor C2(18), described two
Secondary capacitor C2(18) one end linearly connected have ground connection (19).
2. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the grounding screw
(20) one end is fixedly connected on the basal plane of fixed bracket (1).
3. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the external shield cylinder
(3) there are gaps between low tension volumetric cylinder (4), and filled with the positioning insulation of PMP insulating materials.
4. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the connection bolt
(6) end is located at the inside of grounding screw (20).
5. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the U2 output connects
Line terminals (7) are located between connection bolt (6) and low tension volumetric cylinder (4), and the U2 output wiring terminal (7) is L-type.
6. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the high-field electrode
(10) one end passes through high pressure and presses shielding case (9), and extends to the inside of low tension volumetric cylinder (4).
7. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the electrode tip A
(12), electrode tip B(13) and electrode tip C(14) one end difference linearly connected in capacitor C1a(15), capacitor C1b(16) and electricity
Hold C1c(17).
8. a kind of capacitance-voltage-distributing type residual voltage sensor according to claim 1, which is characterized in that the voltage sensor
Device internal electrode connects external electrode and external shield cylinder (3) is all made of a kind of alloy material that temperature expansion coefficient changes very little processing
It forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821442895.4U CN209198523U (en) | 2018-09-04 | 2018-09-04 | A kind of capacitance-voltage-distributing type residual voltage sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821442895.4U CN209198523U (en) | 2018-09-04 | 2018-09-04 | A kind of capacitance-voltage-distributing type residual voltage sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209198523U true CN209198523U (en) | 2019-08-02 |
Family
ID=67405443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821442895.4U Expired - Fee Related CN209198523U (en) | 2018-09-04 | 2018-09-04 | A kind of capacitance-voltage-distributing type residual voltage sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209198523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116207789A (en) * | 2023-05-06 | 2023-06-02 | 锦浪科技股份有限公司 | PID effect suppression method based on zero sequence |
-
2018
- 2018-09-04 CN CN201821442895.4U patent/CN209198523U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116207789A (en) * | 2023-05-06 | 2023-06-02 | 锦浪科技股份有限公司 | PID effect suppression method based on zero sequence |
| CN116207789B (en) * | 2023-05-06 | 2023-07-21 | 锦浪科技股份有限公司 | PID effect suppression method based on zero sequence |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 Termination date: 20210904 |