CN105761919B - A kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facility - Google Patents
A kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facility Download PDFInfo
- Publication number
- CN105761919B CN105761919B CN201610148899.0A CN201610148899A CN105761919B CN 105761919 B CN105761919 B CN 105761919B CN 201610148899 A CN201610148899 A CN 201610148899A CN 105761919 B CN105761919 B CN 105761919B
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- Prior art keywords
- pressure
- pole plate
- middle plate
- low pressure
- conductor
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 49
- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000003989 dielectric material Substances 0.000 claims description 4
- 239000011797 cavity material Substances 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facilities, a kind of gas-insulated metal-enclosed transmission facility, including capacitance partial pressure structure, capacitance partial pressure structure includes the high-pressure conductor that axis extends in left-right direction, the shell installed for high-pressure conductor or so, the middle plate for being set to the low pressure pole plate of high-pressure conductor radial direction side and being set between high-pressure conductor and low pressure pole plate, low pressure pole plate is fixedly connected with housing seal, capacitance partial pressure structure of the invention is equivalent to voltage transformer in the prior art, middle plate and low pressure pole plate are set compared with the prior art needs to be separately provided a high voltage arm capacitor, the present invention uses original high-pressure conductor and shell, substantially reduce the volume of capacitance type potential transformer, and structure is simple, reduce production cost.
Description
Technical field
The invention belongs to the gas-insulated metal-enclosed field of transmission equipment of electric system, and in particular to a kind of capacitance partial pressure knot
Structure and the gas-insulated metal-enclosed transmission facility for using the capacitance partial pressure structure.
Background technique
The transmission facility master voltage transformer to be used of high pressure gas insulation metal closing at present is generally electromagnetic potential
Mutual inductor and capacitance type potential transformer, for electromagnetic type due to using transformer principle, volume is big and at high cost.Capacitor voltage is mutual
Sensor uses principle of capacitive divider, including two concatenated capacitors, and two series capacitances share the high-voltage arm electricity of high pressure
Hold and share the low-voltage arm capacitor of low pressure, while there is also parasitic electricity during high voltage power transmission between high-pressure conductor and shell
Hold, and parasitic capacitance is that people are eliminated as much as in transmission line of electricity, high voltage arm capacitor is generally using one tool of introducing
Have the capacitor of fixed value, due to bearing high voltage, the volume of high voltage arm capacitor is also corresponding larger, cost accordingly compared with
Height is able to satisfy needs especially for the more great talent in super-pressure, extra-high voltage equipment, needing to do high voltage arm capacitor, causes whole
A voltage transformer volume is bigger, cost is higher.
Summary of the invention
It is an object of the invention to overcome problems of the prior art, and provide one kind to solve to need in the prior art
High voltage arm capacitor, which is separately provided, leads to the capacitance partial pressure structure of the larger problem of capacitance type potential transformer volume, meanwhile, this hair
Bright purpose, which also resides in, provides a kind of gas-insulated metal-enclosed transmission facility using the capacitance partial pressure structure.
A kind of capacitance partial pressure structure of the invention adopts the following technical scheme that a kind of capacitance partial pressure structure, including axis edge
High-pressure conductor that left and right directions extends, the shell installed for high-pressure conductor or so, the low pressure for being set to high-pressure conductor radial direction side
Pole plate and the middle plate being set between high-pressure conductor and low pressure pole plate, low pressure pole plate are fixedly connected with housing seal.
Be provided with branch barrel structure in the radial direction along high-pressure conductor on the shell, branch barrel structure include axis perpendicular to
The cylinder of the axis of high-pressure conductor and the metal cover board being covered on the outer end face of cylinder, the metal cover board form the low pressure
Pole plate, the middle plate are less than the internal diameter of cylinder.
It is provided between the middle plate and low pressure pole plate after middle plate position is adjusted for fixing middle plate
The fixing piece being made of insulating material.
The fixing piece is that the fixing piece of annular, fixing piece and middle plate and low pressure pole plate seal cooperatively form one respectively
A cavity.
There is dielectric material in the cavity.
The middle plate and low pressure pole plate form low-voltage arm capacitor, are connected on low-voltage arm capacitor for for detection device
The high-frequency detection terminal of electrical connection, for being electrically connected with the fuse of high-frequency detection terminal, low pressure pole plate is used for and high middle plate
The shell of frequency detection terminal is electrically connected.
The low-voltage arm capacitor is parallel with protective resistance.
A kind of gas-insulated metal-enclosed transmission facility of the invention adopts the following technical scheme that a kind of gas-insulated metal
Close transmission facility, including capacitance partial pressure structure, the capacitance partial pressure structure includes that the high pressure that extends in left-right direction of axis is led
Body, is set to the low pressure pole plate of high-pressure conductor radial direction side and is set to high-pressure conductor the shell installed for high-pressure conductor or so
Middle plate between low pressure pole plate, low pressure pole plate are fixedly connected with housing seal.
Be provided with branch barrel structure in the radial direction along high-pressure conductor on the shell, branch barrel structure include axis perpendicular to
The cylinder of the axis of high-pressure conductor and the metal cover board being covered on the outer end face of cylinder, the metal cover board form the low pressure
Pole plate, the middle plate are less than the internal diameter of cylinder.
It is provided between the middle plate and low pressure pole plate after middle plate position is adjusted for fixing middle plate
The fixing piece being made of insulating material.
The invention has the benefit that there are parasitic capacitances between high-pressure conductor and shell, radial the one of high-pressure conductor
Low pressure pole plate is arranged in side, and target is provided between low pressure pole plate and high-pressure conductor, at this time middle plate and high-pressure conductor it
Between form high voltage arm capacitor for undertaking high-pressure section, low-voltage arm capacitor is formed between middle plate and low pressure pole plate for detecting
The detection of equipment, capacitance partial pressure structure of the invention are equivalent to voltage transformer in the prior art, and middle plate and low is arranged
Press pole plate compared with the prior art needs to be separately provided a high voltage arm capacitor, the present invention uses original high-pressure conductor and shell
Body substantially reduces the volume of capacitance type potential transformer, and structure is simple, reduces production cost.
Detailed description of the invention
Fig. 1 is the capacitance partial pressure structure in a kind of one embodiment of gas-insulated metal-enclosed transmission facility of the invention
Structural schematic diagram；
Fig. 2 is the equivalent circuit diagram of Fig. 1.
Specific embodiment
A kind of gas-insulated metal-enclosed transmission facility, including three single-phase, it is each it is single-phase on be provided with a capacitor
Partial-pressure structure, capacitance partial pressure structure include as shown in Figure 1, 2 axis extend in left-right direction high-pressure conductor 1, for for high pressure
Shell 2 that conductor 1 or so installs, the low pressure pole plate for being set to the radial side of high-pressure conductor 1 and it is set to high-pressure conductor 1 and low pressure
Middle plate 6 between pole plate, high-pressure conductor 1 are high voltage bus, and low pressure pole plate is sealedly and fixedly connected with shell 2, high-pressure conductor 1
It is connect with the left and right place of the installing insulated enclosure of shell 2, what is filled inside shell 2 is SF6 mix insulation gas, is arranged on shell 2
There is a branch barrel structure, branch barrel structure includes axis perpendicular to the cylinder 8 of the axis of high-pressure conductor 1 and is covered on the outer of cylinder 8
The outer end face of the cylinder 8 of metal cover board 3 on end face, metal cover board 3 and branch barrel structure is tightly connected, in metal cover board 3 and height
A circular middle plate 6 parallel with high-pressure conductor 1 is provided between pressure conductor 1, the diameter of middle plate 6 is less than cylinder
Internal diameter, middle plate 6 is arranged in parallel with high-pressure conductor 1 and metal cover board 3, and middle plate 6 is made of conductive material, intermediate
It is filled with SF6 mix insulation gas between pole plate 6 and high-pressure conductor 1 and is formed together high voltage arm capacitor C1, middle plate and low pressure
It is provided between pole plate after middle plate position is adjusted for fixing the fixing piece 7 of middle plate being made of insulating material,
Fixing piece 7 is that the fixing piece of annular, fixing piece 7 and middle plate and low pressure pole plate seal cooperatively form a cavity respectively, empty
Intracavitary to have dielectric material, dielectric material 4 is insulation film electroplating of conductive material, between middle plate 6 and metal cover board 3
Low-voltage arm capacitor C2 is formed, metal cover board 3 forms low pressure pole plate, and the distance between middle plate 6 and metal cover board 3 are less than centre
The distance between pole plate 6 and high-pressure conductor 1 are connected with high-frequency detection terminal 5 on low-voltage arm capacitor C2, and high-frequency detection terminal includes
Fuse and shell, for being electrically connected with the fuse of high-frequency detection terminal, low pressure pole plate is used for and high-frequency detection terminal middle plate
Shell electrical connection, low-voltage arm capacitor C2 be parallel with for prevent low-voltage arm capacitor C2 damage after detection device both ends voltage
One end and the shell 2 of excessively high protective resistance R0, low-voltage arm capacitor C2 are grounded together, input voltage Uin, and output voltage is
Uout.In the present embodiment gas-insulated metal-enclosed transmission facility include three it is single-phase, it is each it is single-phase on be provided with above-mentioned electricity
Hold partial-pressure structure.
In other embodiments of the invention, it is not provided with branch barrel structure on shell, and opens up one on shell for centre
The installing port that pole plate is packed into；Metal cover board and cylinder can be made of one to structure and form branch barrel structure；Middle plate and metal
It can also be equal to or more than the distance between middle plate and high-pressure conductor between cover board, it can be according to actual needs to C1's and C2
Capacity ratio is adjusted；Metal cover board can also shell.
A kind of embodiment of capacitance partial pressure structure and a kind of above-mentioned each embodiment of gas-insulated metal-enclosed transmission facility
In capacitance partial pressure structure embodiment it is identical, details are not described herein again.
Claims (9)
1. a kind of capacitance partial pressure structure, it is characterised in that: the high-pressure conductor that extends in left-right direction including axis, for high-pressure conductor
The shell installed is controlled, the low pressure pole plate of high-pressure conductor radial direction side is set to and is set between high-pressure conductor and low pressure pole plate
Middle plate, low pressure pole plate is fixedly connected with housing seal；The middle plate and low pressure pole plate form low-voltage arm capacitor, low
It is connected with the high-frequency detection terminal for being electrically connected for detection device on pressure arm capacitor, high-frequency detection terminal includes fuse and outer
Shell, for being electrically connected with the fuse of high-frequency detection terminal, low pressure pole plate is used for and the shell of high-frequency detection terminal electricity middle plate
Connection.
2. a kind of capacitance partial pressure structure according to claim 1, it is characterised in that: along the diameter of high-pressure conductor on the shell
Branch barrel structure is provided on direction, branch barrel structure includes axis perpendicular to the cylinder of the axis of high-pressure conductor and is covered on cylinder
Outer end face on metal cover board, the metal cover board forms the low pressure pole plate, and the middle plate is less than the internal diameter of cylinder.
3. a kind of capacitance partial pressure structure according to claim 2, it is characterised in that: the middle plate and low pressure pole plate it
Between be provided with after middle plate position is adjusted for fixing the fixing piece being made of insulating material of middle plate.
4. a kind of capacitance partial pressure structure according to claim 3, it is characterised in that: the fixing piece is the fixation of annular
Part, fixing piece and middle plate and low pressure pole plate seal cooperatively form a cavity respectively.
5. a kind of capacitance partial pressure structure according to claim 4, it is characterised in that: have dielectric material in the cavity
Material.
6. a kind of capacitance partial pressure structure according to claim 1, it is characterised in that: the low-voltage arm capacitor is parallel with protection
Resistance.
7. a kind of gas-insulated metal-enclosed transmission facility, including capacitance partial pressure structure, it is characterised in that: the capacitance partial pressure knot
Structure include axis extend in left-right direction high-pressure conductor, install for high-pressure conductor or so shell, be set to high-pressure conductor diameter
Low pressure pole plate to side and the middle plate that is set between high-pressure conductor and low pressure pole plate, low pressure pole plate and housing seal are solid
Fixed connection；The middle plate and low pressure pole plate form low-voltage arm capacitor, are connected on low-voltage arm capacitor for for detection device
The high-frequency detection terminal of electrical connection, for being electrically connected with the fuse of high-frequency detection terminal, low pressure pole plate is used for and high middle plate
The shell of frequency detection terminal is electrically connected.
8. a kind of gas-insulated metal-enclosed transmission facility according to claim 7, it is characterised in that: edge on the shell
High-pressure conductor is provided with branch barrel structure in the radial direction, and branch barrel structure includes cylinder of the axis perpendicular to the axis of high-pressure conductor
With the metal cover board on the outer end face for being covered on cylinder, the metal cover board forms the low pressure pole plate, and the middle plate is small
In the internal diameter of cylinder.
9. a kind of gas-insulated metal-enclosed transmission facility according to claim 8, it is characterised in that: the middle plate
Be provided between low pressure pole plate middle plate position adjust after for fix middle plate be made of insulating material consolidate
Determine part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148899.0A CN105761919B (en) | 2016-03-16 | 2016-03-16 | A kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148899.0A CN105761919B (en) | 2016-03-16 | 2016-03-16 | A kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105761919A CN105761919A (en) | 2016-07-13 |
| CN105761919B true CN105761919B (en) | 2018-12-21 |
Family
ID=56333224
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610148899.0A Active CN105761919B (en) | 2016-03-16 | 2016-03-16 | A kind of capacitance partial pressure structure and gas-insulated metal-enclosed transmission facility |
Country Status (1)
| Country | Link |
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| CN (1) | CN105761919B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598762A (en) * | 2009-06-24 | 2009-12-09 | 河南平高电气股份有限公司 | A kind of sensor and device for monitoring local discharge of gas insulated metal enclosed switch |
| CN101799488A (en) * | 2010-02-23 | 2010-08-11 | 清华大学 | Device and method for generating nominal voltage |
| CN102590718A (en) * | 2012-02-22 | 2012-07-18 | 华北电力大学 | System for GIS (Global Information System) partial discharge measurement and VFTO (Very Fast Transient Overvoltage) measurement |
| CN203630174U (en) * | 2013-12-04 | 2014-06-04 | 国家电网公司 | High precision capacitive voltage divider applied in live-line verification |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034607A (en) * | 2010-03-27 | 2011-04-27 | 陈清国 | High frequency high voltage capacitor and preparation method thereof |
-
2016
- 2016-03-16 CN CN201610148899.0A patent/CN105761919B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598762A (en) * | 2009-06-24 | 2009-12-09 | 河南平高电气股份有限公司 | A kind of sensor and device for monitoring local discharge of gas insulated metal enclosed switch |
| CN101799488A (en) * | 2010-02-23 | 2010-08-11 | 清华大学 | Device and method for generating nominal voltage |
| CN102590718A (en) * | 2012-02-22 | 2012-07-18 | 华北电力大学 | System for GIS (Global Information System) partial discharge measurement and VFTO (Very Fast Transient Overvoltage) measurement |
| CN203630174U (en) * | 2013-12-04 | 2014-06-04 | 国家电网公司 | High precision capacitive voltage divider applied in live-line verification |
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| Publication number | Publication date |
|---|---|
| CN105761919A (en) | 2016-07-13 |
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