CN103972809B - Dual-breaker DCB type high-voltage combined electrical apparatus - Google Patents
Dual-breaker DCB type high-voltage combined electrical apparatus Download PDFInfo
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- CN103972809B CN103972809B CN201310032936.8A CN201310032936A CN103972809B CN 103972809 B CN103972809 B CN 103972809B CN 201310032936 A CN201310032936 A CN 201310032936A CN 103972809 B CN103972809 B CN 103972809B
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Abstract
Dual-breaker DCB type high-voltage combined electrical apparatus, including support, voltage transformer, current transformer, sleeve pipe or cable tank, three-station isolating/grounding switch, breaker mechanism, tank body and central console, the breaker structure includes two breakers being symmetrically mounted in tank body, and it is provided with insulated support between two arc-chutes of two breakers, described two arc-chutes are the tapped double-fracture formula arc-chutes of Intermediate Gray, first is respectively arranged with above both sides and two breakers being symmetrically installed above and below the tap, second, third and fourth three-station isolating/grounding switch, wherein first, second and the 3rd three-station isolating/grounding switch connection installing current transformer sleeve pipe or cable tank, 4th three-station isolating/grounding switch connects voltage transformer.Interior insulation is done using insulating gas in the arc-chutes.Dual-breaker DCB type high-voltage combined electrical apparatus, can meet Digitized transformation demand, reduce floor space, shorten the set-up time, improve the reliability and security of equipment.
Description
Technical field
The present invention relates to high voltage electrical apparatus technical field, exactly it is a kind of double-break type（DCB）Type outdoor gas
Insulation metal closed formula combined electrical apparatus.
Background technology
Currently, three difficulties that the operation of high voltage combined switch electrical equipment or even extra-high voltage composite switch apparatus exists with manufacture
Topic.
First, it is on being spaced line side disconnecting switch folding low current ability (capacitance current, inductive current), how
Actual requirement can be met.With developing rapidly for power system, the circuit of parallel lines on same tower is more and more, operation of power networks operation to every
Leave pass, earthed switch suit it is faradic require more and more higher, IEC, country, industry have formulated this corresponding standard.
Now the problem is that, the correlation test carried out according to existing standard, the need for can not meet reality, otherwise induced voltage is less than real
Border demand, otherwise induced-current is less than actual demand.One of the reason for generation problem is：Standard formulation only considered parallel lines on same tower
With the circuit of voltage, and actually it is more the circuit of the different voltages of parallel lines on same tower.The circuit of this parallel lines on same tower, low-voltage
The disconnecting switch of grade, earthed switch need induced voltage, the electric current suited, all higher than high-tension, with current standard exactly
It is different.
Secondly, it is the raising on disconnecting switch bus switching current ability.In China, 252kV GIS disconnecting switch is opened
In the type approval test for closing bus switching current ability, general conversion voltage carries out type approval test by IEC standard, and in IEC standard
It is defined：252kV combined electrical apparatus buses change voltage into 20V, well below the 100V requirements of above-mentioned electricity power engineering；In actual fortune
In row, because bus connection switch is likely due to failure rather than the operation of full item, therefore calculating and the imagination of voltage are changed to bus, no
The accident that bus conversion operation can be prevented to occur.
Last problem is high speed grounding switch HSGS（High Speed Grounding Switches）Manufacture with
Use.The failure 90% of ultra-high-tension power transmission line there are about 80% to be " instantaneous above is singlephase earth fault in singlephase earth fault
Property " failure.In China, 330kV, 500kV circuit eliminate singlephase earth fault using single-pole reclosing mode mostly, are to improve
The stability of system and the reliability of power supply.Can the latent power supply arc that the success or not of single-pole reclosing depends on trouble point self-extinguishment.
Scene operation shows with experiment, under stable state secondary arc current and recover voltage amplitude be latent power supply arc from two decisions gone out because
Element；The method of Secondary Arc Extinction mainly has high voltage reactor neutral point to connect low reactance and uses HSGS（High Speed
Grounding Switches）Two kinds.The former is at home and abroad widely used, and the latter is in the built UHV systems of Japan
In used.It is shorter for those circuits, power-frequency overvoltage is limited without reactor is connect, though or there is reactor to be connected on bus
On, but be not situation about being set for certain circuit, it is impossible to it can only use the latter using the former method.HSGS is actual to be exactly
One high-speed switch for being started by relay protection, still, existing earthing isolator can not meet above-mentioned functions.
The content of the invention
The drawbacks of for prior art, the purpose of the present invention is to propose to a kind of double-break type（DCB）Type outdoor gas is exhausted
Edge metal-enclosed type high-voltage combined electrical apparatus.
Dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention, it includes support, voltage transformer, Current Mutual Inductance
Device, sleeve pipe or cable tank, three-station isolating/grounding switch, breaker mechanism, tank body and central console, wherein,
The breaker structure includes two breakers being symmetrically mounted in tank body, and two arc extinguishings of two breakers
Insulated support is provided between room, described two arc-chutes are the tapped double-fracture formula arc-chutes of Intermediate Gray, in tap
The station isolation of first, second, third and fourth three/ground connection is respectively arranged with above lower both sides and two breakers being symmetrically installed
Switch, wherein the sleeve pipe or cable tank of first, second, and third three-station isolating/grounding switch connection installing current transformer,
4th three-station isolating/grounding switch connects voltage transformer；
The tank body and central console are packed on support, the central console connect respectively two breakers of control, four set three
Station disconnecting switch；
Insulation gas filled do in interior insulation, the arc-chutes uses insulating gas to do in described sleeve pipe or cable and tank body
Interior insulation.
Further, the insulating gas is SF6。
Further, two breakers have respective spring operating mechanism.
Further, two arc-chutes share a tank body.
Further, two breakers are connected at the insulated support of static contact.
Further, four groups of tri-station isolating switch are with a tank body.
Further, described sleeve pipe is compound insulating sleeve or porcelain insulating sleeve.
Dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention, using back-to-back two breakers so that power transformation
Design of standing longitudinal size is greatly reduced.It is using band centre tap formula double break shape of the mouth as one speaks arc-chutes arc extinguishing, compound insulating sleeve or electricity
Cable cabin is arranged at arc-chutes both sides and centre tap, and tri-station isolating switch, sleeve pipe or cable tank bottom suit is installed below
SF is filled in electric current, voltage transformer, sleeve pipe or cable and tank body6Interior insulation is done, SF is used between arc-chutes and tank body6In gas is done
Insulation, breaker matches somebody with somebody spring operating mechanism, and tri-station isolating switch uses high-purity SF6Gas does interior insulation, described high-purity SF6
Gas is 0.5MPa, and the disconnecting switch folding low current ability in the present invention is caused above（Capacitance current, inductive current）Enhancing, it is female
Line switching current ability（Switching current, conversion voltage）Enhancing, can meet Digitized transformation demand, reduce occupation of land face
Product, shortens the set-up time, improves the reliability and security of equipment, and can adapt to most application environments, cost
It is relatively low, it is easy to standardization to manufacture.
Brief description of the drawings
Fig. 1 is the structural representation of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention；
Fig. 2 is a preferred embodiment of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention；
Fig. 3 is a preferred embodiment of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention；
Fig. 4 is a preferred embodiment of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention；
Fig. 5 is a preferred embodiment of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention；
Fig. 6 is a preferred embodiment of dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and embodiment, it is right
The present invention is further elaborated.It should be appreciated that embodiment described herein is only used for explaining the present invention, rather than it is used for
The limitation present invention.
As shown in figure 3, in dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention, circuit connecting mode is：Two
End bus is connected by current transformer and three-station isolating/grounding switch with breaker respectively, and central console is arranged on breaker
With three-station isolating/grounding switch bottom, two circuit breaker static contact end connection outputs are drawn once by sleeve pipe or cable tank
Terminal, and one voltage transformer of connection before extraction.
As shown in figure 1, dual-breaker DCB type high-voltage combined electrical apparatus proposed by the present invention, by support 7, voltage transformer 5,
Current transformer 4, sleeve pipe or cable 1, three-station isolating/grounding switch 2, breaker mechanism 3, tank body and central console 6 are constituted, its
In,
The breaker mechanism 3 includes being symmetrically mounted on two breakers in tank body, and two of two breakers are gone out
Insulated support is provided between arc chamber, the arc-chutes of two breakers are the double-fracture formula arc-chutes with centre tap formula, such as
Shown in Fig. 1, arc-chutes are set to two breakers that the breaker mechanism includes being symmetrically mounted in tank body, and two open circuits
Insulated support is provided between two arc-chutes of device, described two arc-chutes are the tapped double-fracture formula arc extinguishing of Intermediate Gray
Room, is respectively arranged with first, second, third and fourth above and below the tap between both sides and the moving contact and breaker that are symmetrically installed
Three-station isolating/grounding switch 2, wherein first, second, and third three-station isolating/grounding switch connection installing current transformer
4 sleeve pipe or cable tank 1, the 4th three-station isolating/grounding switch connection voltage transformer 5；In sleeve pipe or cable tank and tank body
It is insulation gas filled to do in interior insulation, arc-chutes and interior insulation is done using insulating gas between arc-chutes and tank body.
Double-fracture pattern arc-chutes with centre tap formula, the setting specifically includes two groups of moving contacts 10 and static contact 11,
Wherein, every group of moving contact 10 and static contact 11 are connected with insulated support 12 respectively.
In a preferred embodiment of the invention, the insulating gas is SF6, described high-purity SF6Atmospheric pressure is 0.5MPa, is increased
Oil (gas) filling device security.
Two sets of breakers have respective spring operating mechanism, far distance controlled can be achieved or manual on the spot.
As shown in Fig. 2 in practical application, two arc-chutes share a tank body, two sets of breakers share an outlet
Tri-station isolating switch, four groups of tri-station isolating switch are with a tank body.
Described sleeve pipe is compound insulating sleeve, generally using silastic material, and in particular circumstances, such as High aititude,
Extremely frigid zones preferably configure porcelain bushing shell.
Dual-breaker DCB type high-voltage combined electrical apparatus disclosed by the invention, integrally-built design uses potting breaker knot
Structure is arranged, is easy to live whole Transporting and installation.Breaker uses double-fracture SF6Arc-chutes, using sulfur hexafluoride gas as
Insulation, and by high voltage isolator integrated design, form overall HGIS high-voltage combined electrical apparatus.Three-phase is shared mounted in one
On under casing, it can be shared per phase or individually be furnished with spring operating mechanism.The high-voltage combined electrical apparatus can meet Digitized transformation
Demand, reduces floor space, shortens the set-up time, improves the reliability and security of equipment.
Specifically, actually two breakers of dual-breaker DCB types high-voltage combined electrical apparatus provided by the present invention and many
The New Combined Switchgear of the equipment composition such as group disconnecting switch and multigroup electric current, voltage transformer, as shown in figure 4, middle one group of set
Pipe or cable tank are outlet casing tube, the inlet-outlet line for connecting transformer station.The sleeve pipe or cable tank on both sides are bus casing or electricity
Cable terminal, two groups of buses for connecting transformer station.
When the equipment is as by electric switch, it is defined as by electric operational mode, as shown in figure 5, DS2And CB2In closing position
Put, ES1In "on" position, CB1In stand-by state, to be used as high speed grounding switch.
When the equipment is as switch is sent out, it is defined as sending out operational mode, as shown in fig. 6, DS1 and DS2It is in closing
Gate position, CB1Or CB2One of be in "on" position, another group be in stand-by state.
In practical application, parallel lines on same tower or long range transmission lines in parallel are more and more, open gas-insulated metal-enclosed
Close in equipment (GIS), the requirement of the opening and closing induction current ability (electromagnetic induction, electrostatic induction) of line side earthed switch is increasingly
It is high.Using DCB types HGIS equipment provided by the present invention it is highly desirable solve this problem, ground connection operation can be divided into two kinds
Situation：
1st, the operation of line maintenance state（FES）（See Fig. 5）.Its operating process is first to be each turned off CB2And DS2, then close
CB1, circuit is in ground state, at this moment circuit can be carried out normal repair and maintenance and work.Its advantage is in operation
During, when circuit has electricity, the short circuit current flow that effectively can be measured using line side CT is started relay protection tripping and broken
Road device, to reduce impact of the maloperation to power network.Under normal circumstances, by earthed switch（FES）To close dead line and phase
The inductive grounding electric current produced between the electric line of adjacent band due to electromagnetic induction or electrostatic induction effect.
2nd, high speed grounding switch HSGS function（See Fig. 5）, when circuit single phase ground fault failure, produce once
Electric arc；Failure phase two ends circuit breaker trip, relay protection action first disconnects CB2Failure phase, the relay protection of circuit offside is also simultaneously
Action, tripping failure is mutually switched, an arc extinction, and power supply arc (secondary arc) of diving is produced；Automatics closes CB1Failure
Phase（HSGS is grounded）, it is latent to supply arc extinction；Automatics tripping CB1Failure phase（HSGS is opened）；Reclosing device action is closed
Upper CB2Failure phase, breaker is overlapped.Circuit recovers normal condition.
Dual-breaker DCB types high-voltage combined electrical apparatus provided by the present invention can set the dual of real meaning to protect dress
Put, CT is separately positioned on DS1And DS2To between main bus-bar（As shown in Figure 4）, in side during normal operation of circuit breaker, can break
Opposite side bus isolating switch is opened, transmission operation is carried out to the side breaker, can so circuit normal transmission be not being influenceed
In the case of, linkage test is carried out to relay protection and switch.
As shown in fig. 6, in dual-breaker DCB type high-voltage combined electrical apparatus provided by the present invention, any behaviour for switching bus
Make all to use breaker, it is to avoid the problem of switching current is with voltage is changed, be specially：
（1）Outlet is hung on two buses simultaneously（All switches are in closure state）, when certain bus generation event all the way
During barrier, all switches on fault bus are cut off by bus protection, without causing any outlet line outage.
（2）The transformer station of DCB type combined electrical apparatuses is used in power network, bus-tie circuit breaker should be at off-state, will
Power supply and load outlet switch are selectively hung on two buses so that relay protection and the configuration of automatics are more
Simplify, run relatively reliable.In this case when bus has a power failure all the way for certain, the load of institute's band can pass through on its bus
The switching device of itself is automatically switched on another road bus, and this automatic switching procedure can be completed in several seconds of zero point.
（3）The present invention can change power system operating mode by operating breaker at any time, and enter without using disconnecting switch
Row operation, it is to avoid due to the possibility of maloperation occurring using disconnecting switch, so as to reduce power outage.
Presently preferred embodiments of the present invention is above are only, certainly, it can also be had by exploring according to actual needs and further
Its embodiment.However, it should it is clear that, based on it is similar above-mentioned or it is other do not state out there is same idea
The conversion of embodiment, all should cover among the protection domain of the claims in the present invention.
Claims (7)
1. dual-breaker DCB type high-voltage combined electrical apparatus, it is characterised in that it include support, voltage transformer, current transformer,
Three sleeve pipes or cable tank, three-station isolating/grounding switch, breaker mechanism, tank body and central console, wherein,
The breaker mechanism includes being symmetrically mounted on two breakers in tank body, and two breakers two arc-chutes it
Between be provided with insulated support, described two arc-chutes are the tapped double-fracture formula arc-chutes of Intermediate Gray, two above and below tap
Side is respectively arranged with second and the 4th three-station isolating/grounding switch, and above two breakers being symmetrically installed respectively
First and the 3rd three-station isolating/grounding switch are provided with, wherein first, second, and third three-station isolating/grounding switch connects
Tipping sets the sleeve pipe or cable tank of current transformer, the 4th three-station isolating/grounding switch connection voltage transformer, wherein connecting
First and the 3rd three-station isolating/grounding switch sleeve pipe or cable tank be bus casing or cable termination, connect the two or three work
The sleeve pipe or cable tank of position isolating/grounding switch are outlet casing tube；
The tank body and central console are packed on support, and the central console connects control two breakers, four group of three station respectively
Isolating/grounding switch；
Insulation gas filled in described sleeve pipe or cable tank and tank body to do interior insulation, the arc-chutes are interior to do interior using insulating gas
Insulation.
2. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that the insulating gas is
SF6。
3. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that two breakers
With respective spring operating mechanism.
4. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that two arc-chutes are shared
One tank body.
5. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that two breakers are quiet
It is connected at the insulated support of contact.
6. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that four group of three station isolation/
Earthed switch is with a tank body.
7. dual-breaker DCB type high-voltage combined electrical apparatus according to claim 1, it is characterised in that described sleeve pipe is compound
Insulating sleeve or porcelain insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032936.8A CN103972809B (en) | 2013-01-28 | 2013-01-28 | Dual-breaker DCB type high-voltage combined electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032936.8A CN103972809B (en) | 2013-01-28 | 2013-01-28 | Dual-breaker DCB type high-voltage combined electrical apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103972809A CN103972809A (en) | 2014-08-06 |
| CN103972809B true CN103972809B (en) | 2017-11-07 |
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| CN201310032936.8A Expired - Fee Related CN103972809B (en) | 2013-01-28 | 2013-01-28 | Dual-breaker DCB type high-voltage combined electrical apparatus |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319713B (en) * | 2014-11-21 | 2017-05-10 | 江苏亿能电气有限公司 | Intelligent high-voltage bus double-isolation-block quick plug device |
| CN105070577A (en) * | 2015-07-30 | 2015-11-18 | 河南平高电气股份有限公司 | Isolation grounding switch mechanism, single-pole component and GIS electrical equipment |
| CN106374380B9 (en) * | 2016-11-17 | 2023-09-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Uninterrupted power extension function module and extension method for GIS bus standby interval |
| CN108649551A (en) * | 2018-06-13 | 2018-10-12 | 中铁第四勘察设计院集团有限公司 | Rail traffic online tri-station isolating switch and monitoring system |
| CN108878212B (en) * | 2018-08-29 | 2024-03-15 | 浙江紫光电器有限公司 | Tank-type breaker with ultrahigh voltage and double fracture |
| CN113410824B (en) * | 2021-06-15 | 2022-05-27 | 广东电网有限责任公司广州供电局 | High-voltage alternating-current rapid switch equipment |
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| CN1470091A (en) * | 2000-10-20 | 2004-01-21 | �����ɷ� | High voltage hybridstation with opposite busbars and shielded cutoff and switching modules for same |
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| CN102684100A (en) * | 2011-03-17 | 2012-09-19 | 包红旗 | Vacuum type high-pressure combined electric apparatus |
| CN203086051U (en) * | 2013-01-28 | 2013-07-24 | 中电新源智能电网科技有限公司 | Double-circuit breaker (DCB) type high-voltage composite electric appliance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07288906A (en) * | 1994-04-15 | 1995-10-31 | Takaoka Electric Mfg Co Ltd | Disconnector |
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2013
- 2013-01-28 CN CN201310032936.8A patent/CN103972809B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470091A (en) * | 2000-10-20 | 2004-01-21 | �����ɷ� | High voltage hybridstation with opposite busbars and shielded cutoff and switching modules for same |
| CN102684100A (en) * | 2011-03-17 | 2012-09-19 | 包红旗 | Vacuum type high-pressure combined electric apparatus |
| CN202178526U (en) * | 2011-05-27 | 2012-03-28 | 中国西电电气股份有限公司 | Composite gas insulated switchgear |
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| CN203086051U (en) * | 2013-01-28 | 2013-07-24 | 中电新源智能电网科技有限公司 | Double-circuit breaker (DCB) type high-voltage composite electric appliance |
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| CN103972809A (en) | 2014-08-06 |
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Inventor after: Bao Hongqi Inventor after: Wang Yan Inventor after: Zhang Shan Inventor before: Bao Hongqi |
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Granted publication date: 20171107 Termination date: 20200128 |