CN107068457A - It is a kind of to carry the switch that VFTO suppresses function - Google Patents
It is a kind of to carry the switch that VFTO suppresses function Download PDFInfo
- Publication number
- CN107068457A CN107068457A CN201710335958.XA CN201710335958A CN107068457A CN 107068457 A CN107068457 A CN 107068457A CN 201710335958 A CN201710335958 A CN 201710335958A CN 107068457 A CN107068457 A CN 107068457A
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- China
- Prior art keywords
- magnet ring
- vfto
- conducting rod
- touch base
- cylinder
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The switch that VFTO suppresses function is carried the present invention relates to a kind of, carrying the switch of VFTO suppression functions includes cylinder, moved end touch base is provided with cylinder, static side touch base, the switch also includes the magnet ring unit for being used to suppress VFTO, radial outside on the barrel of cylinder in moved end touch base and/or static side touch base is provided with the conversion terminal that confession bus is connected, connected between the conversion terminal and corresponding moved end touch base or static side touch base by radial direction conducting rod, the magnet ring unit is set on the radial direction conducting rod, the quantity of magnet ring unit can on radial direction conducting rod along cylinder axially or radially increase, substantially increase the flexibility of magnet ring arrangement, rationally utilize the space of inner barrel, the VFTO of generation is directly delivered on the magnet ring unit on radial direction conducting rod by corresponding moved end touch base or static side touch base, inhibition is preferable, and the positional distance isolation fracture of magnet ring unit arrangement is nearer, advantageously reduce magnet ring usage amount.
Description
Technical field
The switch that VFTO suppresses function is carried the present invention relates to a kind of.
Background technology
Disconnecting switch generally comprises cylinder and is arranged on the moved end touch base and static side touch base of inner barrel, moved end touch base and sets
There is moving contact, static side touch base is provided with static contact, and moving contact and static contact are connected with bus with real when moving contact is acted respectively
The connection and isolation of existing circuit.
Disconnecting switch is in Cubicle Gas-Insulated Switchgear（GIS）In breaking-closing operating each time can all occur number
The resume combustion of ten times even hundreds of times, the voltage at contact gap two ends falls suddenly within several nanoseconds, and voltage steep wave is in GIS
Traveling wave is constantly produced, occurs complicated refraction, reflection and is superimposed, produce very fast transient overvoltage（VFTO）.VFTO is a kind of
Special overvoltage, it mainly has three features：One is bandwidth, can be from zero to up to a hundred megahertzs；Two be that steepness is big, the rise time
Can as little as several nanoseconds；Three be that amplitude is high, up to 3p.u, because VFTO is very harmful to the insulation of GIS itself and nearby device,
Reliable VFTO braking measures must be taken in GIS.
In existing VFTO suppressing methods, have what is realized by installing damping resistance additional, pass through the fracture two in disconnecting switch
Parallel resistance is held, reduces the voltage at fracture two ends, so as to reduce the number of times punctured repeatedly and reduce breakdown voltage, this method energy
Enough effective suppression VFTO, still, resistance can not fix the two ends for being connected in parallel on switch fracture, after completing to suit operation, resistance
Must withdraw, and be connected in parallel on the two ends of switch fracture can take substantial amounts of disconnecting switch inner space, add disconnecting switch
Manufacturing cost and use cost.
Another VFTO suppressing method is that the magnet ring for suppressing VFTO is installed in GIS loops, and magnet ring position
The fracture of isolation by distance switch is nearer, and the effect that it suppresses VFTO is more obvious, and magnet ring is arranged on the suppression of the inside of disconnecting switch
Preferably, the magnet ring quantity required for reaching same inhibition is also minimum for effect.For example, in Publication No. CN1258923A
Disclosed in state's patent application document it is a kind of suppress fully closed combined electric unit very fast transient overvoltage method, its by every
Leave and put one group of magnet ring to suppress VFTO generation on the conducting rod at the fracture two ends of pass or breaker.But, due to cylinder
The space that internal portion is used to install magnet ring is limited, adds the installation of magnet ring and can be limited by with the insulation distance of cylinder, therefore
The installation number of cylinder internal magnetic ring is limited, when needing to meet the demand for suppressing VFTO using more magnet ring, existing magnetic
Ring will be unable to meet use demand, if magnet ring is arranged on outside cylinder, because the fracture that isolation by distance is switched is farther, then need
Set more magnet rings to meet VFTO inhibitions, also result in volume increase, cost and improve.
The content of the invention
The switch that VFTO suppresses function is carried it is an object of the invention to provide a kind of, to solve magnet ring of the prior art
The problem of can not effectively being arranged in cylinder.
To achieve the above object, a kind of technical scheme for the switch for carrying VFTO suppression functions of the present invention is：
A kind of carry in the switch that VFTO suppresses function, including cylinder, cylinder is provided with moved end touch base, static side touch base, the switch
Also include the radial outside on the magnet ring unit for being used to suppress VFTO, the barrel of cylinder in moved end touch base and/or static side touch base to set
There is the conversion terminal connected for bus, by radially conductive between the conversion terminal and corresponding moved end touch base or static side touch base
Bar is connected, and the magnet ring unit is set on the radial direction conducting rod.
Magnet ring unit includes two or more magnet ring, and each magnet ring radially the radially nested setting of conducting rod or is radially led
The axial direction of electric pole is arranged side by side.
Magnet ring unit includes the magnet ring of the radially radially nested setting of conducting rod, in addition to the radially axial direction of conducting rod
The magnet ring being arranged side by side.
Insulating materials is provided between magnet ring unit and radial direction conducting rod.
Each magnet ring is encapsulated in respective insulation shell.
Radial direction conducting rod includes conducting rod main body, and conducting rod main body is provided with close to one end of conversion terminal to be connected with conversion terminal
The joint connect, the other end is fixed on corresponding moved end touch base or static side touch base, the coupling compression joint magnet ring unit close to turn
The side of connecting terminal.
The outer cover of magnet ring unit is provided with the shielding cylinder for being covered in whole magnet ring unit.
The one end of radial direction conducting rod away from conversion terminal provided with being turned edge outside, and the shielding cylinder, which overhangs, to be fixed on outer turn edge.
Shielding cylinder is radially swollen convex and form drum organization close to the end of conversion terminal.
The barrel of cylinder be provided with along cylinder radially extend and with the switching of inner barrel insertion cylinder, the switching
Terminal includes the adapter for being arranged on the disc insulator of switching cylinder outer end and being arranged on disc insulator, the adapter position
In in the space that switching cylinder is surrounded.
The beneficial effects of the invention are as follows：Compared to prior art, one kind involved in the present invention carries VFTO and suppresses function
Switch, by barrel in moved end touch base and/or static side touch base radial outside set conversion terminal, conversion terminal with
Radial direction conducting rod is set between moved end touch base or static side touch base accordingly, and magnet ring unit is arranged on radial direction conducting rod, so
Radial direction conducting rod is drawn into cylinder by conversion terminal afterwards, and insulation system is necessarily provided between conversion terminal and cylinder, because
In the case that this insulation distance between barrel is met, the quantity of magnet ring unit can be on radial direction conducting rod along cylinder
Axially or radially increase, substantially increase the flexibility of magnet ring arrangement, rationally using the space of inner barrel, and disconnecting switch
VFTO produced by during divide-shut brake, is directly delivered on radial direction conducting rod by corresponding moved end touch base or static side touch base
On magnet ring unit, inhibition is preferable, and the positional distance isolation fracture of magnet ring unit arrangement is nearer, advantageously reduces magnet ring
Usage amount.
Brief description of the drawings
Fig. 1 is a kind of structural representation of one embodiment of switch for carrying VFTO suppression functions of the present invention；
Fig. 2 be Fig. 1 in magnet ring type conducting rod structural representation；
Fig. 3 is the structural representation of Fig. 2 middle magnetic ring units；
Fig. 4 is a kind of structural representation of second embodiment middle magnetic ring unit of switch for carrying VFTO suppression functions of the present invention
Figure；
Fig. 5 is a kind of structural representation of the 3rd embodiment middle magnetic ring unit of switch for carrying VFTO suppression functions of the present invention
Figure；
Fig. 6 is a kind of structural representation of the 4th embodiment middle magnetic ring unit of switch for carrying VFTO suppression functions of the present invention
Figure；
Fig. 7 is a kind of structural representation of the 5th embodiment middle magnetic ring unit of switch for carrying VFTO suppression functions of the present invention
Figure.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The a kind of of the present invention carries one embodiment that VFTO suppresses the switch of function, as shown in Figure 1 to Figure 3, the switch
It is a kind of disconnecting switch, disconnecting switch is vertical structure, it includes arranging along above and below tubular axis direction inside cylinder 6, cylinder 6
There are moved end touch base 7 and static side touch base 4, static side touch base 4 is fixed on base 13 by insulating supporting 8, moved end touch base 7 passes through insulation
Support 8 is fixed on top plate 11, and the lower end of moved end touch base 7 is provided with moving contact 5, and the upper end of static side touch base 4 is provided with static contact, and
Operation moving contact 5 is provided with outside cylinder 6 and moves back and forth up and down the operating mechanism 9 realized with static contact divide-shut brake, static side touch base 4
Left side cylinder 6 barrel on be provided with radially extending and being transferred cylinder with the static side of the inner barrel insertion along cylinder
14, the outer end of static side switching cylinder 14, which is provided with disc insulator 1, disc insulator 1, is provided with static side adapter 2, and moved end is touched
Radially extending and being transferred with the moved end of the inner barrel insertion along cylinder is provided with the barrel of the cylinder 6 on the right side of seat 7
Cylinder 15, the outer end of moved end switching cylinder 15, which is provided with disc insulator 1, disc insulator 1, is provided with moved end adapter 12.
Magnetic is provided between static side touch base 4 and static side adapter 2 and between moved end touch base 7 and moved end adapter 12
Ring-like conducting rod 3, VFTO is suppressed by the setting of magnet ring type conducting rod 3, while realizing that the bus of disconnecting switch is conductively connected, is dropped
Low disconnecting switch complexity, improves reliability, reduces cost.Above-mentioned moved end touch base 7 is connected by flap fingertip with moving contact 5
Connect, the upper end of moving contact 5 is connected with the drive link that driven operating mechanism 9 is controlled, and operating mechanism 9 sends instruction, controls driving section
Part 10 drives moving contact 5 to move up and down, and realizes the divide-shut brake of disconnecting switch.
The making process of disconnecting switch is as follows：When disconnecting switch is in open position, lower surface and the moved end of moving contact 5 are touched
The lower surface of seat 7 is concordant, when operating mechanism 9 sends reclosing command, and drive disk assembly 10 drives moving contact 5 to move down, and moves and touches
After first 5 move down a trip, disconnecting switch is in closing position, now, and moving contact 5 is touched by flap fingertip and static side
Seat 4 is connected, and the moving arcing contact of the lower end of moving contact 5 is connected with the static arc contact of static contact upper end, and moving arcing contact, static arc contact are favourable
Electric arc produced by extinguishing during disconnecting switch divide-shut brake.Disconnecting switch separating brake process in contrast, disconnecting switch separating brake
When, electric isolution state is formed between the lower surface of moved end touch base 7 and the upper surface of static side touch base 4, its distance is disconnecting switch
Open away from this space turns into the isolated port of disconnecting switch.
Magnet ring type conducting rod 3 needs first to carry out the VFTO severity analysis of GIS transformer stations before the mounting, then emulates
Magnet ring quantity to needed for suppression VFTO.
Magnet ring type conducting rod 3 includes being connected between corresponding moved end touch base 7 and moved end adapter 12 and static side touch base 4
Magnet ring unit 33 is arranged with radial direction conducting rod 32 between static side adapter 2, radial direction conducting rod 32, magnet ring unit 33 is to adopt
The insulation shell formed with insulating materials forms the encapsulation of multiple magnet rings, and magnet ring is carried after being encapsulated by insulation shell 333 using being
The magnet ring anti-vibration of high magnet ring, the ability of impact, it is ensured that enough dielectric strength, reliability.Magnet ring edge in magnet ring unit 33
The axial direction of radial direction conducting rod 32, which is arranged side by side, arranges magnet ring group, and the dimensions of its any two magnet ring group is consistent, magnetic
Number of rings amount axially gradually increases；A big footpath magnet ring 331 and a path magnet ring 332 are respectively provided with each group,
And the coaxial nested arrangement of the two magnet rings, this arrangement can greatly increase magnetic sufficiently using the space inside cylinder 6
The mounting arrangements quantity of ring, realizes optimal VFTO inhibitions.
By taking the structure type for the magnet ring type conducting rod 3 being arranged between static side touch base 4 and static side adapter 2 as an example：
The right-hand member of radial direction conducting rod 32 be provided with for be connected on static side touch base 4 it is outer turn edge 38, turn edge be provided with 38 outside
Screw mounting hole and constitute flange arrangement, be provided with the left of the side face of static side touch base 4 pacify for radial direction conducting rod 32 accordingly
The screw hole of dress.The left end of described radial direction conducting rod 32, which is fixedly connected with, to be used for radial direction conducting rod 32 and static side adapter 2
The joint 31 being conductively connected, the joint 31 is in axial direction to be extended to the right to have blind hole 35 on bar type structure, its left side,
The screw mounting hole in axial direction extended is provided with the bottom hole of blind hole 35, accordingly on the left side of radial direction conducting rod 32
Screw hole is provided with, joint 31 installs the left end for being fixed on radial direction conducting rod 32 by screw 36.The right side of joint 31 is to the left
The clamp hole having for the clamp of radial direction conducting rod 32 is extended, while being provided with flanging 37, joint on the right side of joint 31
31 are turned edge by outer on flanging 37 and radial direction conducting rod 32 38 is folded in magnet ring unit 33 above-mentioned radial direction conducting rod 32
On, moreover, in the fixation procedure of radial direction conducting rod 32 and joint 31, flanging 37 is pressed from both sides magnet ring unit 33 with appropriate pressure
Tightly.Meanwhile, external thread structure is provided with the outer side face for turning edge 38 of radial direction conducting rod 32, has screwed be located at magnet ring thereon
Be provided with shielding cylinder 34 outside unit 33, the right-hand member inwall of shielding cylinder 34 with turn edge outside 38 helicitic texture it is corresponding connection
Female thread structure, the left end opening of shielding cylinder 34 is arranged on the left side of described flanging 37, and the left end opening of shielding cylinder 34
Be provided with gap between magnet ring unit 33 and joint 31, it is ensured that shielding cylinder 34 overhang be fixed on it is outer turn edge on 38, it is above-mentioned
The left part of shielding cylinder 34 is radially swollen convex and forms drum organization, can play a part of uniform electric field, and static side is turned
The intersection for connecing cylinder 14 and cylinder 6 forms more preferable shield effectiveness, it is ensured that insulating properties.Certainly, in other embodiments, according to
Actual demand shielding cylinder 34 can also use straight tube structure.
Mounting means of the magnet ring type conducting rod 3 in disconnecting switch is as follows：In the case of other parts are mounted,
Magnet ring type conducting rod 3 is fixed between corresponding static side touch base 4 and static side adapter 2, is specially first with screw radially conductive
Bar 32 is fixed on static side touch base 4；Then magnet ring unit 33 is sleeved on radial direction conducting rod 32；Afterwards with screw 36 joint 31
Connected with radial direction conducting rod 32, now to ensure electrical contact good between radial direction conducting rod 32 and joint 31, also ensured
Joint 31 can be clamped magnet ring unit 33 with appropriate pressure with radial direction conducting rod 32；Finally in the right-hand member of shielding cylinder 34
Appropriate locking anaerobic adhesive is smeared on screw thread, then shielding cylinder 34 is tightened on radial direction conducting rod 32, and ensures shielding cylinder 34
The electrical contact of right-hand member and conducting rod is good, prevents floating potential.After magnet ring type conducting rod 3 is installed, then static side transferred
First 2 are assembled together with disc insulator 1, then static side adapter 2 is plugged in together with joint 31, and now joint 31 is inserted into
The inside of static side adapter 2, disc insulator 1 is bolted with cylinder 6, completes the assembling of disconnecting switch.
In a second embodiment of the present invention, the assembling form of magnet ring unit could be arranged to form as shown in Figure 4,
The magnet ring of several uniform internal diameters is arranged side by side along the axial direction of conducting rod, the consistent magnet ring of these specifications is coaxially arranged in juxtaposition, magnetic
The quantity of ring 331 axially increases.
In the 3rd embodiment of the present invention, the assembling form of magnet ring unit is it can also be provided that shape as shown in Figure 5
Formula, using the magnet ring of different specification size, larger interior diameter magnet ring 331 is set in the outside of smaller external diameter magnet ring 332, two magnet rings
Coaxial nested arrangement, by that analogy, magnet ring quantity is radially increased along conducting rod, can so make full use of the footpath of conducting rod
To the space in direction, be conducive to the miniaturization of magnet ring type conducting rod.
In the 4th embodiment of the present invention, the assembling form of magnet ring unit is it can also be provided that shape as shown in Figure 6
Formula, magnet ring is stepped up using the assembling form axial-radial in embodiment two and embodiment three, until meeting VFTO suppresses bar
Untill part.
In the 5th embodiment of the present invention, the assembling form of magnet ring unit is it can also be provided that shape as shown in Figure 7
Formula, the size of magnet ring can be with inconsistent, it is only necessary to ensures that magnet ring will not be rocked on conducting rod.
In the present embodiment, magnet ring type conducting rod is separately positioned on static side touch base and moved end touch base, in other embodiment
In, according to VFTO severity analysis, magnet ring quantity needed for the VFTO that is inhibited by emulation is selected only in moved end touch base
Or the only installation on static side touch base.
In the present embodiment, each magnet ring is packaged in respective insulation shell, in other embodiments, can be only in magnet ring
Insulating materials is set between unit and radial direction conducting rod.
In the present embodiment, magnet ring unit is clamped, and is that magnet ring unit is not in use in order to ensure disconnecting switch
It can rock, so as to produce vibration and noise, in other embodiments, clamping structure can be not provided with, it is only necessary to ensure magnet ring unit
In each magnet ring be each attached on conducting rod, block is conductively connected accordingly need not set outer turn edge.
In other embodiments, the magnet ring type conducting rod can apply in other switchgears such as breaker.
Claims (10)
1. a kind of carry is provided with moved end touch base, static side touch base in the switch that VFTO suppresses function, including cylinder, cylinder, described to open
Close the magnet ring unit for also including being used to suppress VFTO, it is characterised in that：In moved end touch base and/or static side on the barrel of the cylinder
The radial outside of touch base is provided with the conversion terminal connected for bus, the conversion terminal and corresponding moved end touch base or static side touch base
Between connected by radial direction conducting rod, the magnet ring unit is set on the radial direction conducting rod.
2. according to claim 1 carry the switch that VFTO suppresses function, it is characterised in that：The magnet ring unit includes two
It is individual with upper magnetic ring, the radially radially nested setting of conducting rod or radially the axial direction of conducting rod is arranged side by side of each magnet ring.
3. according to claim 1 carry the switch that VFTO suppresses function, it is characterised in that：The magnet ring unit includes edge
The magnet ring of the radially nested setting of radial direction conducting rod, in addition to the magnet ring that radially axial direction of conducting rod is arranged side by side.
4. carry the switch that VFTO suppresses function according to any one of claim 1 ~ 3, it is characterised in that：The magnet ring
Insulating materials is provided between unit and radial direction conducting rod.
5. carry the switch that VFTO suppresses function according to Claims 2 or 3, it is characterised in that：Each magnet ring is sealed
In respective insulation shell.
6. carry the switch that VFTO suppresses function according to any one of claim 1 ~ 3, it is characterised in that：The radial direction
Conducting rod includes conducting rod main body, and conducting rod main body is provided with the joint being connected with conversion terminal close to one end of conversion terminal, separately
One end is fixed on corresponding moved end touch base or static side touch base, and the coupling compression joint is in magnet ring unit close to the one of conversion terminal
Side.
7. carry the switch that VFTO suppresses function according to any one of claim 1 ~ 3, it is characterised in that：The magnet ring
The outer cover of unit is provided with the shielding cylinder for being covered in whole magnet ring unit.
8. according to claim 7 carry the switch that VFTO suppresses function, it is characterised in that：The radial direction conducting rod is remote
One end of conversion terminal provided with being turned edge outside, and the shielding cylinder, which overhangs, to be fixed on outer turn edge.
9. according to claim 7 carry the switch that VFTO suppresses function, it is characterised in that：The shielding cylinder is close to switching
The end of terminal is radially swollen convex and forms drum organization.
10. carry the switch that VFTO suppresses function according to any one of claim 1 ~ 3, it is characterised in that：The cylinder
The barrel of body be provided with along cylinder radially extend and with the switching of inner barrel insertion cylinder, the conversion terminal includes setting
The disc insulator and the adapter being arranged on disc insulator in switching cylinder outer end are put, the adapter is located at switching cylinder institute
In the space surrounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335958.XA CN107068457B (en) | 2017-05-12 | 2017-05-12 | A kind of included VFTO inhibits the switch of function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335958.XA CN107068457B (en) | 2017-05-12 | 2017-05-12 | A kind of included VFTO inhibits the switch of function |
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| Publication Number | Publication Date |
|---|---|
| CN107068457A true CN107068457A (en) | 2017-08-18 |
| CN107068457B CN107068457B (en) | 2019-08-13 |
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ID=59597183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335958.XA Active CN107068457B (en) | 2017-05-12 | 2017-05-12 | A kind of included VFTO inhibits the switch of function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086895A (en) * | 2019-06-13 | 2020-12-15 | 河南平芝高压开关有限公司 | Circuit breaker static end connecting assembly, double-bus circuit breaker and GIS |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3610858A (en) * | 1967-04-06 | 1971-10-05 | Bbc Brown Boveri & Cie | Disconnecting device for fully insulated high-voltage electrical switchgear with individually reciprocal contacts |
| CN1142118A (en) * | 1995-05-26 | 1997-02-05 | Abb管理有限公司 | Cut-off device for metal-enclosed and gas-insulated high-voltage switch device |
| CN1258923A (en) * | 2000-01-25 | 2000-07-05 | 清华大学 | Very fast transient overvoltage suppressing method for completely enclosed combined electrical appliance |
| CN201084626Y (en) * | 2007-09-07 | 2008-07-09 | 西安电力机械制造公司 | An ultra-high pressure GIS-purpose isolation switch |
| CN102832562A (en) * | 2012-08-23 | 2012-12-19 | 云南电力试验研究院（集团）有限公司电力研究院 | Leak resistance for eliminating GIS VFTO (Gas Insulated Switchgear Very Fast Transient Overvoltage) residual charge |
| CN103236684A (en) * | 2013-04-17 | 2013-08-07 | 清华大学 | High-frequency magnet ring device for restraining very fast transient overvoltage |
| CN205264589U (en) * | 2015-12-08 | 2016-05-25 | 新东北电气集团超高压有限公司 | Restrain device that isolator operation produced VFTO |
| CN106505457A (en) * | 2016-11-21 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | A kind of nanocrystalline magnetic loop device |
-
2017
- 2017-05-12 CN CN201710335958.XA patent/CN107068457B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3610858A (en) * | 1967-04-06 | 1971-10-05 | Bbc Brown Boveri & Cie | Disconnecting device for fully insulated high-voltage electrical switchgear with individually reciprocal contacts |
| CN1142118A (en) * | 1995-05-26 | 1997-02-05 | Abb管理有限公司 | Cut-off device for metal-enclosed and gas-insulated high-voltage switch device |
| CN1258923A (en) * | 2000-01-25 | 2000-07-05 | 清华大学 | Very fast transient overvoltage suppressing method for completely enclosed combined electrical appliance |
| CN201084626Y (en) * | 2007-09-07 | 2008-07-09 | 西安电力机械制造公司 | An ultra-high pressure GIS-purpose isolation switch |
| CN102832562A (en) * | 2012-08-23 | 2012-12-19 | 云南电力试验研究院（集团）有限公司电力研究院 | Leak resistance for eliminating GIS VFTO (Gas Insulated Switchgear Very Fast Transient Overvoltage) residual charge |
| CN103236684A (en) * | 2013-04-17 | 2013-08-07 | 清华大学 | High-frequency magnet ring device for restraining very fast transient overvoltage |
| CN205264589U (en) * | 2015-12-08 | 2016-05-25 | 新东北电气集团超高压有限公司 | Restrain device that isolator operation produced VFTO |
| CN106505457A (en) * | 2016-11-21 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | A kind of nanocrystalline magnetic loop device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086895A (en) * | 2019-06-13 | 2020-12-15 | 河南平芝高压开关有限公司 | Circuit breaker static end connecting assembly, double-bus circuit breaker and GIS |
| CN112086895B (en) * | 2019-06-13 | 2022-07-29 | 河南平芝高压开关有限公司 | Circuit breaker static end connecting assembly, double-bus circuit breaker and GIS |
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| Publication number | Publication date |
|---|---|
| CN107068457B (en) | 2019-08-13 |
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Inventor after: Pei Tao Inventor after: Ye Sanpai Inventor after: Feng Yingchun Inventor after: Zhao Haixiang Inventor after: Jin Guangyao Inventor after: Guo Yujing Inventor after: Liu Weidong Inventor after: Li Zhibing Inventor after: Bai Changyu Inventor after: Wang Zhigang Inventor after: Li Lina Inventor before: Pei Tao Inventor before: Zhao Haixiang Inventor before: Jin Guangyao Inventor before: Bai Changyu Inventor before: Guo Yujing Inventor before: Wang Zhigang Inventor before: Li Lina Inventor before: Ye Sanpai |
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Effective date of registration: 20180131 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Applicant after: Pinggao Group Co., Ltd. Applicant after: State Grid Corporation of China Applicant after: MAINTENANCE COMPANY, STATE GRID SHANDONG ELECTRIC POWER CO., LTD. Applicant after: Tsinghua University Applicant after: China Electric Power Research Institute Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Applicant before: Pinggao Group Co., Ltd. Applicant before: State Grid Corporation of China Applicant before: MAINTENANCE COMPANY, STATE GRID SHANDONG ELECTRIC POWER CO., LTD. |
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