CN208862563U - Fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device - Google Patents
Fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device Download PDFInfo
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- CN208862563U CN208862563U CN201821897639.4U CN201821897639U CN208862563U CN 208862563 U CN208862563 U CN 208862563U CN 201821897639 U CN201821897639 U CN 201821897639U CN 208862563 U CN208862563 U CN 208862563U
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- inductance
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- 230000001052 transient effect Effects 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000004593 Epoxy Substances 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 5
- 230000001939 inductive effect Effects 0.000 claims description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008439 repair process Effects 0.000 abstract description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 10
- 239000011324 bead Substances 0.000 description 8
- 238000013016 damping Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model relates to a kind of, and the fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device, belong to fast transient overvoltage and inhibits device field, including isolated bus casing, it is used to support the epoxy glass fiber stick of isolated bus casing, and inductance element inductance element and resistive element in isolated bus casing are set, it is equipped with the metal for connecting inductance element and resistive element and bus in the inhibition device and supports connector, the insulating carriage of fixing element, and two metallic connection parts, it further include two connection guides, the connection guide both ends are separately connected the metallic connection parts of inductance element and resistive element resistive element, keep inductance element in parallel with resistive element.The utility model uses straightforward procedure, and minimum influence is resulted only in GIS, and realizes this inhibition device of convenient and intuitive installation, easy to repair.
Description
Technical field
The utility model belongs to fast transient overvoltage and inhibits device field, is related to a kind of in parallel based on resistance-inductance side by side
Fast transient overvoltage inhibit device.
Background technique
GIS substation has many advantages, such as that compact-sized, occupied area is small, easy to maintain, reliable for operation, obtains in high-pressure system
To extensive use.Can be generated when breaker (CB) and disconnecting switch (DS) and grounding switch (ES) operate in GIS wavefront it is extremely steep,
The fast transient overvoltage (VFTO) of the higher-order of oscillation.VFTO not only jeopardizes the insulation of GIS internal unit, can also be in the form of traveling wave
Outside is propagated and be coupled to, the insulation of secondary device and connected high-tension apparatus is threatened, especially there is the equipment of winding, such as transformation
Device, reactor etc..Disconnecting switch due to inside do not have arc-control device, so when disconnecting switch operation easily generate amplitude greatly,
The extremely steep fast transient overvoltage of waveform.
Have both at home and abroad at present and disclosed substation VFTO braking measure mainly has: installing arrester (MOA), installing point
Switching-on resistance, installing damping bus solenoid, installing ferrite bead, installing trap, these devices are to VFTO in substation
Inhibition have certain effect, but also have the shortcomings that certain and limitation, here is the detailed description of these braking measures:
(1) install arrester (MOA): in common GIS arrester, surge arresters with porcelain housings (MONAT) is for protecting master
The arrester of transformer, bus arrester (MONAG) are then for protecting GIS body equipment.Metal oxide arrester is filled
It is located at transformer high-voltage side gusset, to protect main transformer, and metal oxide arrester is installed in one side gusset of bus, to protect
GIS body equipment is protected, outgoing line side installs metal oxide arrester, to protect each electrical equipment of outgoing line side.
(2) install opening and closing resistor: the method using opening and closing resistor in parallel can make residual charge be released to power supply, drop
VFTO can be absorbed due to the presence of opening and closing resistor even if occurring to switch phenomenon of restriking in the probability that low switch is restriked
Thus energy, Overvoltage Amplitude and steepness decline, can further suppress VFTO.But installing opening and closing resistor can be because of GIS system
System is more compact structure feature to increase the complexity of disconnecting switch structure, and the secondary arc current in system is caused to increase,
The problems such as single-phase arcing time of flashover over the ground is elongated, not only makes the difficulty of technology and process aspect amid a sharp increase, increases equipment
Investment, and be possible to the reliability of weakening system under serious conditions, the probability of system jam caused to increase.
(3) ferrite bead is installed: currently, having research to think that VFTO can be inhibited using ferrite bead, due to iron oxygen
The high frequency permeance of body, ferrite magnetic is located on the conductor rods at disconnecting switch both ends, is just equivalent to is keeping apart in this way
An impedance has been sealed between shutdown mouth and bus.For 50Hz power frequency electric energy, ferrite bead is right in normal operation
Its magnetic hystersis loss almost without, ferrite bead when VFTO occurs, although high-frequency information abundant can be generated in circuit,
But high-frequency circuit parameter can be influenced by ferrite bead and be changed, and increase the energy damage of high frequency traveling wave on the line
Consumption, meanwhile, folding, the order of reflection of high frequency traveling wave generation on the line are reduced, the amplitude and steepness of VFTO is finally effectively reduced.
Can be with the parallel connection of resistance and inductance come equivalent ferrite bead, wherein the amplitude and steepness of VFTO can be by the common of resistance and inductance
It acts on and changes.But the saturated characteristic and remanent magnetism of magnet ring material have a certain impact to VFTO, especially magnetic saturation is special
Property be affected, in addition, GIS internal structure is compact and space is limited, GIS internal junction certainly will be changed by installing ferrite bead additional
Structure, and the size of magnet ring, quantity, placement position all affect inhibitory effect, this measure at present has also needed to be solved one
A little technical problems.
(4) installing damping bus solenoid: the installing damping solenoidal inhibition VFTO principle of bus and installing ferrite magnetic
The inhibition principle of ring is almost the same, and principle is one solenoidal device of damping bus of installation on bus, is inhaled using inductance
Receive energy and be discharged into the amplitude that resistance further reduces VFTO, still, due to the solenoidal labyrinth of damping bus and
Difficulty is bigger when being mounted on bus two sides, and changes the structure in GIS, is easy to cause GIS unstable, therefore this
Kind inhibits device, and there is no promote the use of on a large scale.
(5) it installs trap: trap is installed in main transformer inlet, it is substantially a kind of inductance element, dress
If trap can reduce the maximum amplitude and steepness of wave edge of VFTO in GIS to a certain extent, main transformer, but oscillation frequency are protected
Rate but increased, and it is very big also to generate amplitude on trap, very high frequency, endanger biggish overvoltage, therefore use
It is limited in scope.
Inhibiting the analysis of device to can be seen that existing VFTO to related VFTO from existing technology inhibits device due to it
Complexity all can generate no small negative effect to existing GIS at degree, cause GIS unstable.
Utility model content
In order to inhibit VFTO, the utility model provides a kind of resistance, inductance in parallel device side by side to inhibit VFTO, the device
Installation site be disconnecting switch two sides bus on, by inductance absorb energy release at resistance both ends, to effectively inhibit
The VFTO size that isolator operation generates.
In order to achieve the above objectives, the utility model provides the following technical solutions:
A kind of fast transient overvoltage inhibition device based on the parallel connection of resistance-inductance side by side, including isolated bus casing, use
In the epoxy glass fiber stick of supports insulative bus casing, and the inductance element inductance element being arranged in isolated bus casing
And resistive element, the inductance element and interior be equipped with of resistive element support connector for the metal of connecting element and bus, Gu
The insulating carriage and two metallic connection parts for determining element, further include two connection guides, the connection guide both ends difference
The metallic connection parts for connecting inductance element and resistive element, keep inductance element in parallel with resistive element.
Further, cyclic annular inductive loop and resistance ring that the inductance element and resistive element are, the inductive loop and resistance
Have in the middle part of ring the through-hole for passing through bus, the metal support connector and insulating carriage setting in through-hole and inductive loop or
Between the circumference of resistance ring, it is used to support periphery, and is electrically connected inductance or resistance on periphery with bus；The insulation
Support frame can open and close, for inductive loop and resistance ring to be easily set in bus.
It further, further include contact connector, the contact connector is arranged on metallic connection parts, for connecting conduction
Contact portion enhances the bonding strength of metallic connection parts.
Further, the metal support connector is that connection sheet is made in the metal of sheet.
Further, the resistive element is the solid metal oxide resistor with anti-pulse voltage.
The utility model has the beneficial effects that: device provided by the utility model uses method as simple as possible,
Minimum influence is resulted only in GIS, and realizes this inhibition device of convenient and intuitive installation, it is easy to repair.Compared to existing
VFTO inhibits device, and there is no complicated compositions for present design, facilitates installation and removal, and the inside without changing GIS
Structure does not weaken the original reliability of system.It can be according to the different size of suitable electricity of voltage class selection of different occasions
Feel ring and resistance ring parameter, can effectively inhibit the size of VFTO.The present apparatus is added for contact junction and casing
Gu having very high mechanical strength.
Detailed description of the invention
In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, the utility model provides as follows
Attached drawing is illustrated:
Fig. 1 is that the fast transient overvoltage described in the utility model based on the parallel connection of resistance-inductance side by side inhibits apparatus structure to show
It is intended to；
Fig. 2 is that the fast transient overvoltage described in the utility model based on the parallel connection of resistance-inductance side by side inhibits the equivalent original of device
Manage schematic diagram；
Fig. 3 is the structural schematic diagram of inductive loop described in the utility model and resistance ring.
Appended drawing reference: connection sheet 5, metal connection is made in bus 1, isolated bus casing 2, resistance ring 3, inductive loop 4, metal
Portion 6, insulating carriage 7, connection guide 8, through-hole 9.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.
As shown in Figure 1, Figure 3, a kind of fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device, including exhausted
Edge bus casing 2, the epoxy glass fiber stick for being used to support isolated bus casing 2, and be arranged in isolated bus casing 2
The metal of connecting element and bus 1 is equipped in inductance element inductance element and resistive element, the inductance element and resistive element
Connector, the insulating carriage 7 of fixing element and two metallic connection parts 6 are supported, further include two connection guides 8, it is described
8 both ends of connection guide are separately connected the metallic connection parts 6 of inductance element and resistive element, make inductance element and resistive element simultaneously
Connection.
Further, cyclic annular inductive loop 4 and resistance ring 3 that the inductance element and resistive element are, the inductive loop 4 and electricity
There is the through-hole 9 for passing through bus 1 in the middle part of balk ring 3, the metal support connector and insulating carriage 7 are arranged in 9 He of through-hole
Between the circumference of inductive loop 4 or resistance ring 3, it is used to support periphery, and inductance or resistance and bus 1 on periphery is made to be electrically connected
It connects；The insulating carriage 7 can open and close, for inductive loop 4 and resistance ring 3 to be set in bus 1.
It further, further include contact connector, the contact connector is arranged on metallic connection parts 6, leads for connecting
Electrical contact portion enhances the bonding strength of metallic connection parts 6.
Further, the metal support connector is that connection sheet 5 is made in the metal of sheet.
The major function effect of each component and principle are as follows:
Insulating sleeve: it is wrapped in one week of bus 1, it may be convenient to open and close, and be used to place and fixed inductance ring 4 and electricity
Balk ring 3 is easily installed and dismantles.
Epoxy glass fiber stick: there is very high public frequency compressive resistance, be used to supports insulative casing, enhance mechanical coupler
Physical strength.
Inductive loop 4, resistance ring 3: inductive loop 4 and resistance ring 3 are attached by the way of in parallel by connection guide 8,
When travelling wave current passes through inductive loop 4 and resistance ring 3, travelling wave current forms high voltage, both ends damping electricity at inductance end
Resistance can absorb traveling wave energy under action of high voltage, and equivalent schematic diagram is as shown in Figure 2.
Connection guide 8: connection guide 8 is placed in 1 casing of bus, and connects inductive loop 4 and resistance ring, plays electricity in parallel
Feel the effect of ring 4 and resistance ring.
Metal supports connection sheet: for connecting bus 1 and inductive loop 4, and playing the role of certain bracing reinforcement.
Insulating carriage 7: play the role of fixed inductance ring 4 and resistance ring 3.
Contact connector: for connecting conduction contact part, enhancing is conductively connected the bonding strength of part.
Finally, it is stated that preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The range of restriction.
Claims (5)
1. a kind of fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device, it is characterised in that: female including insulation
Thread casing, the epoxy glass fiber stick for being used to support isolated bus casing, and the inductance member being arranged in isolated bus casing
It is equipped in part inductance element and resistive element, the inductance element and resistive element and is supported for the metal of connecting element and bus
Connector, the insulating carriage of fixing element and two metallic connection parts further include two connection guides, and the connection is led
Bar both ends are separately connected the metallic connection parts of inductance element and resistive element, keep inductance element in parallel with resistive element.
2. the fast transient overvoltage according to claim 1 based on the parallel connection of resistance-inductance side by side inhibits device, feature
It is: useful in the middle part of the cyclic annular inductive loop and resistance ring that the inductance element and resistive element are, the inductive loop and resistance ring
In the through-hole for passing through bus, the circle of through-hole and inductive loop or resistance ring is arranged in metal support connector and insulating carriage
Between week, it is used to support periphery, and is electrically connected inductance or resistance on periphery with bus；The insulating carriage can
Folding, for inductive loop and resistance ring to be set in bus.
3. the fast transient overvoltage according to claim 1 based on the parallel connection of resistance-inductance side by side inhibits device, feature
It is: further includes contact connector, the contact connector is arranged on metallic connection parts, for connecting conduction contact part,
Enhance the bonding strength of metallic connection parts.
4. the fast transient overvoltage according to claim 1 based on the parallel connection of resistance-inductance side by side inhibits device, feature
Be: the metal support connector is that connection sheet is made in the metal of sheet.
5. the fast transient overvoltage according to claim 1 based on the parallel connection of resistance-inductance side by side inhibits device, feature
Be: the resistive element is the solid metal oxide resistor with anti-pulse voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897639.4U CN208862563U (en) | 2018-11-16 | 2018-11-16 | Fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897639.4U CN208862563U (en) | 2018-11-16 | 2018-11-16 | Fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208862563U true CN208862563U (en) | 2019-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821897639.4U Active CN208862563U (en) | 2018-11-16 | 2018-11-16 | Fast transient overvoltage based on the parallel connection of resistance-inductance side by side inhibits device |
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| Country | Link |
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| CN (1) | CN208862563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112289531A (en) * | 2020-10-13 | 2021-01-29 | 沅陵县向华电子科技有限公司 | Pulse high-power inductance resistor |
| CN114047418A (en) * | 2022-01-11 | 2022-02-15 | 南通弘宸电气设备制造有限公司 | External application voltage withstand test equipment for power transformer |
-
2018
- 2018-11-16 CN CN201821897639.4U patent/CN208862563U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112289531A (en) * | 2020-10-13 | 2021-01-29 | 沅陵县向华电子科技有限公司 | Pulse high-power inductance resistor |
| CN112289531B (en) * | 2020-10-13 | 2022-03-04 | 沅陵县向华电子科技有限公司 | Pulse high-power inductance resistor |
| CN114047418A (en) * | 2022-01-11 | 2022-02-15 | 南通弘宸电气设备制造有限公司 | External application voltage withstand test equipment for power transformer |
| CN114047418B (en) * | 2022-01-11 | 2022-03-18 | 南通弘宸电气设备制造有限公司 | External application voltage withstand test equipment for power transformer |
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