CN101291045B - Switch installation with build-in electric arc releasing device - Google Patents
Switch installation with build-in electric arc releasing device Download PDFInfo
- Publication number
- CN101291045B CN101291045B CN2007100460274A CN200710046027A CN101291045B CN 101291045 B CN101291045 B CN 101291045B CN 2007100460274 A CN2007100460274 A CN 2007100460274A CN 200710046027 A CN200710046027 A CN 200710046027A CN 101291045 B CN101291045 B CN 101291045B
- Authority
- CN
- China
- Prior art keywords
- compartment
- pressure
- release
- bus
- electric arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a switch device having an internal electric arc releasing device. The switch device comprises a shell, wherein a circuit breaker compartment, a bus compartment and a cable compartment are arranged inside the shell; a pressure release compartment, a pressure release channel and a decompression device are also arranged inside the shell; the circuit breaker compartment, the bus compartment and the cable compartment are all communicated with the pressure release compartment and the pressure release channel directly or indirectly. When an arcing fault occurs, the reasonable pressure release channel can be formed by means of a plurality of pressure release doors among the compartments, and high-temperature high-pressure gas is guided to be progressively cooled and decompressed, reaches the pressure release channel and is discharged out of the switch device from the decompression device. Through experiments, the switch device of the invention reaches the IEC62371-200 and GB3906-2006 standards.
Description
Technical field
The present invention relates to the switchgear in a kind of electrical power trans mission/distribution system, relate in particular to switchgear with build-in electric arc releasing device.
Background technology
Switchgear is an equipment commonly used in electrical power trans mission/distribution system, and it mainly is responsible for the disjunction of electric current.In switchgear,, produce fault electric arc sometimes owing to reasons such as Parts Breakdown or operate misses.Though fault electric arc seldom produces, in case produce, it can form high pressure and high temperature in very short time.As in low voltage switchgear, fault electric arc can be elevated to 13000K with temperature in 10ms, in about 15ms pressure is risen to about 2 * 10 simultaneously
5Pa～3 * 10
5Pa.Parts in the equipment, door for example can break away from fixed mechanism and raised under such high pressure effect.High temperature also makes fusing and evaporation process takes place in the equipment, and the result produces high-temperature gas, and high-temperature gas discharges again under pressure.This can bring life danger near staff.
The harm that internal fault electric arc causes is extremely serious, and is light then cause the damage of switchgear, causes large-area power-cuts, heavy then cause the people's lives and properties heavy losses.
The standard IEC 62,371 200 and the standard GB 3906-2006 that formulate in International Electrotechnical Commission, improved the requirement of the fail safe of switchgear use, wherein the status of fault electric arc protection is significantly improved, and new standard has also been done to replenish and revision to the criterion of test.5 new criterions are as follows:
Criterion 1: Men Hegai must close; If arrive at indicating device or wall without any part, can accept distortion.Its additional conditions are, if when equipment needs more close wall when installing with test, its permanent deformation should less than regulation to the wall distance, and the gas of ejection must not be towards wall.
Criterion 2: breaking must not appear in duration of test, housing; Must not there be substance to the object of 60g to fly out.
Criterion 3: highly locating until 2m, can free approaching outside branch, must not burn into hole.
Criterion 4: indicating device must not be heated and light (vertical and level indicator is included in the criterion).
Criterion 5: ground connection connects still effective.The visual inspection of upchecking, when with suspicion () is by measuring in case of necessity.
After test, grade IAC (internal fault electric arc grade) is marked on the nameplate, and attached following explanation: can indicate " F, L or R " (front, side, back) near side near grade A, B or C, and indicate test current (kA) and duration of test runs.
Switchgear manufacturer has recognized that the serious consequence that internal fault electric arc causes, and takes measures on the switchgear of oneself one after another, and the effect of restricted internal fault electric arc reduces its influence.In existing passive measure, the fault electric arc protector is the good method that reduces arc energy.Yet do not have effective fault electric arc protector at present substantially, can not satisfy the requirement of new international standard IEC62371-200, can not satisfy the related request of standard GB 3906-2006.
Summary of the invention
Technical problem to be solved by this invention provides a kind of switchgear with build-in electric arc releasing device, to improve switchgear in the fail safe aspect the arc fault protection.
The present invention solves the problems of the technologies described above the technical scheme that adopts to provide a kind of switchgear with build-in electric arc releasing device, comprise a housing, be provided with breaker compartment, bus compartment and cable compartment in the housing, also have release of pressure compartment, release of pressure passage and decompressor in the housing, this release of pressure passage is located at the housing internal upper part, and this decompressor is located at this release of pressure channel roof; The upside of this breaker compartment is adjacent with the release of pressure passage, and is provided with a breaker chamber pressure relief door in sides adjacent, and this breaker chamber pressure relief door can be opened so that breaker compartment communicates with the release of pressure passage; This bus compartment is adjacent with this release of pressure compartment, and is provided with a bus-bar room pressure relief door in sides adjacent, and this bus-bar room pressure relief door can be opened so that the bus compartment communicates with the release of pressure compartment; This cable compartment directly communicates with the release of pressure compartment; This release of pressure compartment is adjacent with the release of pressure passage, and is provided with cable vault's pressure relief door in sides adjacent, and this cable vault's pressure relief door can be opened so that the release of pressure compartment communicates with the release of pressure passage.Wherein, the volume of this release of pressure passage is greater than the volume of this release of pressure compartment.
In the above-mentioned switchgear with build-in electric arc releasing device, the front side of contiguous this housing of a side of this breaker compartment, and the front side of this breaker compartment is provided with a high voltage protection door.
In the above-mentioned switchgear with build-in electric arc releasing device, this breaker chamber pressure relief door, bus-bar room pressure relief door, cable vault's pressure relief door are made of aluminizing zinc steel plate.
In the above-mentioned switchgear with build-in electric arc releasing device, the volume of this release of pressure passage is 5～8 times of volume sum of the volume of this bus compartment and this release of pressure compartment.
In the above-mentioned switchgear, when this bus-bar room pressure relief door is opened, block being communicated with of this cable compartment and this release of pressure compartment with build-in electric arc releasing device.
So switchgear of the present invention, by the release of pressure passage of appropriate design, the high temperature and high pressure gas that correct booting failure electric arc effectively produces progressively weakens, cools off and final release gas, thus protection operating personnel and neighbouring device.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is the internal structure schematic diagram of the switchgear of one embodiment of the invention.
Fig. 2 is the schematic perspective view of the switchgear of one embodiment of the invention.
Fig. 3 A～Fig. 3 C is the release of pressure process schematic diagram of switchgear of the present invention.
Embodiment
Please consult shown in Figure 2 in conjunction with Fig. 1, switchgear 100 of the present invention, comprise a housing 101, be provided with breaker compartment 10, bus compartment 20 and cable compartment 30 in the housing 101, wherein, breaker compartment 10 is positioned at the bottom, front side of housing, is provided with a circuit breaker 11 in the breaker compartment, and circuit breaker 11 has a pair of contact arm 12 in order to carry out make-break operation.Cable compartment 30 is positioned at the bottom rear of housing, is provided with a current transformer 31 that has a contact box in the cable compartment 30, has cable junction 32 on it.Bus compartment 20 is positioned at the top of cable compartment 30, is provided with a branch bus 21 and a contact box 22 in it, and wherein contact box 22 is for contact arm 12 actions of circuit breaker 11.Also have release of pressure compartment 40, release of pressure passage 50 and decompressor 60 in the housing 101, wherein release of pressure passage 50 is located at the housing internal upper part, 60 tops of being located at release of pressure passage 50 of decompressor.The upside of breaker compartment 10 is adjacent with release of pressure passage 50, and be provided with a breaker chamber pressure relief door 13 in this sides adjacent, this breaker chamber pressure relief door is generally and closes, and when arc fault took place, breaker chamber pressure relief door 13 can be opened so that breaker compartment 10 communicates with release of pressure passage 50.40 of release of pressure compartments are located at bus compartment 20 rears, adjacent with bus compartment 20, and be provided with a bus-bar room pressure relief door 23 in this sides adjacent, this bus-bar room pressure relief door is usually also for closing, when arc fault took place, bus-bar room pressure relief door 23 can be opened so that bus compartment 20 communicates with release of pressure compartment 40.Cable compartment 30 directly communicates with release of pressure compartment 40.In addition, release of pressure compartment 40 is adjacent with the release of pressure passage 50 of its top, and is provided with cable vault's pressure relief door 33 in this sides adjacent, and this cable vault's pressure relief door is generally and closes, when arc fault took place, cable vault's pressure relief door 33 can be opened so that release of pressure compartment 40 communicates with release of pressure passage 50.
The volume of release of pressure passage 50 is greater than the volume of release of pressure compartment 40, so that make gas decompression, cooling and the dilution that enters wherein, in one embodiment, the volume of release of pressure passage 50 is 5～8 times of volume sum of the volume of this bus compartment 20 and this release of pressure compartment 40.
By above-mentioned narration as can be known, when arc fault took place, breaker compartment 10, bus compartment 20 and cable compartment 30 all can be communicated to release of pressure passage 50, thereby with waste cock equipment 100 behind the gas release of pressure.
In an embodiment of the present invention, breaker chamber pressure relief door 13, bus-bar room pressure relief door 23 and cable vault's pressure relief door 33 all can be selected high strength, corrosion resistant 2.5mm aluminizing zinc steel plate for use, its tensile strength more than 275Mpa, the pressure that causes much larger than fault electric arc, and elongation is more than 37%.Each assembly of switchgear 100 is about 8.8 grades bolt (figure does not show) installation with high strength, these M8 bolt stretching resistances are greater than 29.3kN, therefore when producing high temperature and high pressure gas, can not be destroyed because of arc fault, and can be correctly the effective high temperature and high pressure gas that produces of booting failure electric arc, progressively weaken, cool off and final release gas.
In addition, in the front side of breaker compartment 10, an enhancement mode high voltage protection door 14 is set, it can ensure that high temperature and high pressure gas can be from the ejection of the front side of equipment 100, so that reach the purpose of protection operating personnel and relevant device.
The electric arc dispose procedure of this switchgear 100 is described when in the bus compartment arc fault taking place below in conjunction with Fig. 3 A～Fig. 3 C.At first see also Fig. 3 A, cover plate 23,33 closes when normal condition, and bus compartment 20 and release of pressure compartment 40, release of pressure compartment 40 are all isolated with release of pressure passage 50.When switchgear puts into operation when sending electricity, when upward electric arc is broken down because of factors such as misoperation, failure of insulation or toys in branch bus 21 places in the bus compartment 20, owing to about 10000 degrees centigrade of arc center's temperature very Gao Keda, ambient air is heated, expands, gas pressure increases, when the pressure maximum can reach the 20kN left and right sides, washes the bus-bar room pressure relief door 23 of bus compartment 20 1 sides open in narrow and small compartment, carries out the pressure release first time, enter release of pressure compartment 40, shown in Fig. 3 B.And because fault current is arranged, higher level's circuit breaker moved, cut off the electricity supply this moment, and electric arc weakens, extinguishes.Because electric arc does not extinguish fully; still have hot gas to produce and enter release of pressure compartment 40; hot gas constantly gathering moves upward; pressure strengthens and washes open cable vault's pressure relief door 33 of release of pressure compartment 40 upsides, and pressure is discharged for the second time, enters the bigger release of pressure passage 50 in space; shown in Fig. 3 C; high temperature and high pressure gas is diluted, weakens by cold air once more, passes the switchgear house that decompressor 60 arrives switchgears 100 outsides at last, reaches the purpose of protection operating personnel and switchgear.It should be noted that because the mode (Fig. 3 B) that is opened of bus-bar room pressure relief door 23, will block release of pressure compartment 40 with its below being communicated with of cable compartment 30, barrier gas enters downwards in the cable compartment 30.
After the release of pressure process of having understood bus compartment 20, below the release of pressure process of the concise and to the point similar breaker compartment 10 of description process and cable compartment 30.
For breaker compartment 10; when contact arm 12 on the circuit breaker in the breaker compartment 10 falls because of valve or contact contact when not exclusively breaking down electric arc; the high temperature and high pressure gas mechanism of production is with bus compartment 20; after this; breaker chamber pressure relief door 13 plays first order cushioning effect; hot gas enters release of pressure passage 50 subsequently; diluted at last, weaken and pass decompressor 60 and enter switchgear house, the front-operated of 14 pairs of protections of the high voltage protection door of enhancement mode simultaneously personnel's life security plays key effect.
For cable compartment 30, when electric arc is broken down because of misoperation, failure of insulation in the cable junction 32 in the cable compartment 30, gas enters release of pressure compartment 40, after this cable vault's pressure relief door 33 plays first order cushioning effect, hot gas enters release of pressure passage 50 subsequently, and is diluted at last, weaken and pass decompressor 60 and enter switchgear house.
So switchgear 100 of the present invention; no matter be which work compartment generation arc fault; all can be by the release of pressure passage of appropriate design; the high temperature and high pressure gas that correct booting failure electric arc effectively produces; progressively weaken, cool off and the final gas that discharges, thus protection operating personnel and relevant device.
The test basis that is proposed according to IEC 62,371 200 standards is tested below, proves the technique effect that the present invention reaches.
1. test is arranged:
1.1 experimental condition:
Please get back to Figure 1 and Figure 2, ceiling 201 should be apart from test piece (being the present invention) top 600mm ± 100mm, and the wall of side should be apart from test piece side 100mm ± 30mm, and the rear board of test piece is 800+ (0～100mm) apart from the gauged distance of wall.
1.2 indicating device:
Indicating device is the chintz of black or the cotton ramie blended spinning cloth of black, is of a size of 150mmX150mm.
2. the voltage and current that applies
2.1 voltage
The applied voltage of test loop should equal the rated voltage of switchgear.
2.2 electric current
2.2.1 alternating current component
The deviation of switchgear internal arc test short-circuit current value should be 0～5%.
2.2.2 peak current
Moment of select closing a floodgate should make the prospective peak value that flows through a limit phase current equal 2.5 times of alternating current component effective value of 2.2.1 regulation, and this makes the major loop of electric current appear at another limit phase.
2.3 frequency
When rated frequency was 50Hz, the frequency during on-test should be between 48Hz～52Hz.
2.4 duration of test runs
Standard recommendation 1s, 0.5s and 0.1s.
3 result of the tests
The door and the cover plate of safety are not opened.Do not have parts to arrive the position of each side indicating device or wall, do not ftracture at the time of test determination inside and outside shell, hot gas is not lighted indicating device, and shell still links to each other with earth point.
IAC level A F L R
The back, side, personnel front that only limits to authorize
Internal fault: 31.5kA 1s
The test current duration
Therefore, switchgear 100 of the present invention has passed through the internal fault arc test.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (5)
1. the switchgear that has build-in electric arc releasing device, comprise a housing, be provided with breaker compartment, bus compartment and cable compartment in the housing, it is characterized in that, also have release of pressure compartment, release of pressure passage and decompressor in the housing, this release of pressure passage is located at the housing internal upper part, and this decompressor is located at this release of pressure channel roof; The upside of this breaker compartment is adjacent with the release of pressure passage, and is provided with a breaker chamber pressure relief door in sides adjacent, and this breaker chamber pressure relief door can be opened so that breaker compartment communicates with the release of pressure passage; This bus compartment is adjacent with this release of pressure compartment, and is provided with a bus-bar room pressure relief door in sides adjacent, and this bus-bar room pressure relief door can be opened so that the bus compartment communicates with the release of pressure compartment; This cable compartment directly communicates with the release of pressure compartment; This release of pressure compartment is adjacent with the release of pressure passage, and is provided with cable vault's pressure relief door in sides adjacent, and this cable vault's pressure relief door can be opened so that the release of pressure compartment communicates with the release of pressure passage,
Wherein, the volume of this release of pressure passage is greater than the volume of this release of pressure compartment.
2. the switchgear with build-in electric arc releasing device as claimed in claim 1 is characterized in that, the front side of contiguous this housing of a side of this breaker compartment, and the front side of this breaker compartment is provided with a high voltage protection door.
3. the switchgear with build-in electric arc releasing device as claimed in claim 1 is characterized in that, this breaker chamber pressure relief door, bus-bar room pressure relief door, cable vault's pressure relief door are made of aluminizing zinc steel plate.
4. the switchgear with build-in electric arc releasing device as claimed in claim 1 is characterized in that, the volume of this release of pressure passage is 5～8 times of volume sum of the volume of this bus compartment and this release of pressure compartment.
5. the switchgear with build-in electric arc releasing device as claimed in claim 1 is characterized in that, when this bus-bar room pressure relief door is opened, blocks being communicated with of this cable compartment and this release of pressure compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100460274A CN101291045B (en) | 2007-09-14 | 2007-09-14 | Switch installation with build-in electric arc releasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100460274A CN101291045B (en) | 2007-09-14 | 2007-09-14 | Switch installation with build-in electric arc releasing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101291045A CN101291045A (en) | 2008-10-22 |
| CN101291045B true CN101291045B (en) | 2011-05-25 |
Family
ID=40035185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100460274A Active CN101291045B (en) | 2007-09-14 | 2007-09-14 | Switch installation with build-in electric arc releasing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101291045B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5432040B2 (en) * | 2010-04-08 | 2014-03-05 | 三菱電機株式会社 | Switchgear |
| WO2013145358A1 (en) * | 2012-03-27 | 2013-10-03 | 三菱電機株式会社 | Gas-insulated switchgear |
| WO2014172886A1 (en) | 2013-04-26 | 2014-10-30 | General Electric Company | Switchgear housing including pressure relief member |
| DE102014116473A1 (en) * | 2014-11-11 | 2016-05-12 | Schneider Electric Industries Sas | breather |
| JP6143990B1 (en) * | 2015-12-02 | 2017-06-07 | 三菱電機株式会社 | Gas insulated switchgear |
| CN105826854B (en) * | 2016-03-22 | 2018-04-17 | 广州白云电器设备股份有限公司 | A kind of Cubicle Gas-Insulated Switchgear |
| CN105846337A (en) * | 2016-05-18 | 2016-08-10 | 国家电网公司 | Novel inflatable switch cabinet |
| JP2018057063A (en) * | 2016-09-26 | 2018-04-05 | 株式会社日立産機システム | Switchgear |
| US11631968B2 (en) | 2019-03-15 | 2023-04-18 | Ls Electric Co., Ltd. | Arc ventilation system of distributing board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5574624A (en) * | 1995-10-03 | 1996-11-12 | Abb Power T&D Company Inc. | Ventilation system for arc-resistant switchgear enclosure |
| CN1033731C (en) * | 1992-11-25 | 1997-01-01 | 株式会社明电舍 | Insulation switching apparatus with envelope filled with electrically insulating gases |
| US5710402A (en) * | 1996-07-30 | 1998-01-20 | Abb Power T&D Company Inc. | Arc-resistant switchgear enclosure employing a toggle flap venting system |
| CN1270420C (en) * | 2001-03-20 | 2006-08-16 | 西门子公司 | Power equipment with voltage reducing channel |
-
2007
- 2007-09-14 CN CN2007100460274A patent/CN101291045B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033731C (en) * | 1992-11-25 | 1997-01-01 | 株式会社明电舍 | Insulation switching apparatus with envelope filled with electrically insulating gases |
| US5574624A (en) * | 1995-10-03 | 1996-11-12 | Abb Power T&D Company Inc. | Ventilation system for arc-resistant switchgear enclosure |
| US5710402A (en) * | 1996-07-30 | 1998-01-20 | Abb Power T&D Company Inc. | Arc-resistant switchgear enclosure employing a toggle flap venting system |
| CN1270420C (en) * | 2001-03-20 | 2006-08-16 | 西门子公司 | Power equipment with voltage reducing channel |
Non-Patent Citations (1)
| Title |
|---|
| CN 1033731 C,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101291045A (en) | 2008-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101291045B (en) | Switch installation with build-in electric arc releasing device | |
| CN105826854B (en) | A kind of Cubicle Gas-Insulated Switchgear | |
| CN109884521A (en) | A kind of circuit-breaker switching on-off control loop template monitoring, alarming circuit | |
| EP3118954B1 (en) | Structure of switchgear with arc eliminator | |
| CN201699343U (en) | Indoor metal armouring draw-out switchgear | |
| CN201994576U (en) | Double-bus bar fixed metallic enclosed switching device | |
| CN110048335B (en) | Switch cabinet | |
| CN106058893A (en) | High-voltage and high-capacity chain-type STATCOM device protection system | |
| RU2285319C1 (en) | Switchgear and control gear cabinet and draw-out part of switchgear and control gear cabinet | |
| CN201946893U (en) | Decompression channels for inner arc-level high-voltage switchgear | |
| CN204577866U (en) | A kind of arc protection causes complete power distribution equipment and the contact box thereof of busbar short-circuit | |
| CN108933390A (en) | Distribution fortune examines convenient power distribution cabinet | |
| KR102128036B1 (en) | Arc protection system and method to control arc protection system | |
| CN207282911U (en) | A kind of closedown structure of transformer substation grounding wire | |
| KR20120126344A (en) | Distribution line purpose T branched type circuit breaker | |
| McClung et al. | Electrical design-Refined for safety | |
| CN207572831U (en) | A kind of indoor armoured | |
| CN109616372A (en) | A kind of console mode intelligent vacuum circuit breaker | |
| CN113436410B (en) | False opening alarm device of high tension switchgear backplate | |
| CN214069223U (en) | High-voltage board with separation net | |
| RU206070U1 (en) | EXTERNAL COMPLETE UNIT SINGLE-STANDING | |
| RU208059U1 (en) | EXTERNAL COMPLETE UNIT SINGLE-STANDING | |
| CN111129972B (en) | Anti-misoperation locking device for high-voltage cabinet door of box-type substation | |
| CN204794071U (en) | Digital arc extinction cabinet | |
| CN210984603U (en) | High-voltage vacuum circuit breaker with switching-on and switching-off protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |