CN103282991B - A kind of switchgear and switching device - Google Patents
A kind of switchgear and switching device Download PDFInfo
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- CN103282991B CN103282991B CN201080070892.2A CN201080070892A CN103282991B CN 103282991 B CN103282991 B CN 103282991B CN 201080070892 A CN201080070892 A CN 201080070892A CN 103282991 B CN103282991 B CN 103282991B
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- housing
- switchgear
- circuit breaker
- contact
- described housing
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Abstract
A kind of switchgear for distributing electric power (102,104,106; 204), it is electrically connected to electric conductor (220), described switchgear comprises the circuit breaker (126,128,130) that can be electrically connected on electric conductor (220), and described circuit breaker is mounted to its conductivity housing (120,122,124; 210), described switchgear provides current path between described circuit breaker (126,128,130) and described electric conductor (220), and described housing holds at least one for operating the ways (150,152) of described circuit breaker, at least one ways described is removable relative to described housing, and described housing has outer surface (134; 234), wherein said housing (120,122,124; 210) there is level and smooth external shape with distribution by by described switchgear (102,104,106; 204) electric field of the voltage generation of electric current.A kind of switching device comprising this switchgear.
Description
Technical field
The present invention relates to the switchgear for distributing electric power, it is electrically connected in the electric conductor of such as bus, this switchgear comprises the circuit breaker being electrically connected in electric conductor, and it is installed the housing of conductivity of described circuit breaker, switchgear provides current path between circuit breaker and electric conductor.Housing holds at least one ways for operating breaker, and at least one ways described is removable relative to housing, and described housing has outer surface.Further, the present invention relates to the switching device of the switchgear comprising mentioned kind.
Background technology
Generally include 1 to 5 module be contained in housing or encapsulation in prior art for pressure and/or high voltage switching device in the 1-1000kV of such as 12kV, 24kV or 36kV, and each module comprises at least three electric sleeve pipes (each the corresponding electric sleeve pipe for three-phase AC distribution system), the conductor guiding to corresponding circuit breaker (such as vacuum interrupter) from each electric sleeve pipe, selector switch (for the corresponding selector switch of each circuit breaker) and bus (for each corresponding bus).Selector switch is used for circuit breaker being connected to bus or circuit breaker and bus being disconnected.Each selector switch be usually included in be connected to bus or and the position that disconnects of bus between pivotable switchblade knife.
Circuit breaker is vacuum interrupter normally, and it can be spring loaded, and is provided as once generation specific run situation interrupt circuit.After disconnection like this, selector switch can disconnect with corresponding bus manually or automatically, or get back to selector switch be connected to the position on ground or get back to open-circuit position, such as can perform the electrical measurement of the assembly of the circuit breaker side of switch in this open-circuit position.
US2008/0217153A1, each in US2004/0104201A1 and DE3528770A1 all discloses the example of switching device, it is disclosed that a kind of switching device, for this switching device of each phase, there is circuit breaker, sleeve pipe, and in primary importance, the moveable switch element that between the second place and the 3rd position, pivot rotates, wherein at primary importance switch element, circuit breaker is connected electrically to bus, second place switch element be connected to ground/greatly, and at three position switch element, circuit breaker is disconnected from both bus and ground, 3rd position corresponds to scram position.
US2005/0241928A1 discloses the electric interrupter with the inside contactor be made up of light material as circuit or load switch.
US3,919,511 disclose the circuit-breaker being furnished with the mechanism shell that part is covered by half shell be made up of conductive material, not weaken the electric field of Shell of circuit breaker inside.
US5,057,654 disclose the chopper switch assembly with interrupter unit, and this interrupter unit has molded housing and cover, the current-carrying part of conductive shunt current path and cover form one, and this current-carrying part is generally thin component or bar.
US2002/0179571A1 discloses the circuit interrupter equipment for distribution system, and it comprises the housing be made up of the conductive material of such as aluminium, forms a part for the electrical connection between the first terminal and the second terminal.Housing is connected to the circuit interrupter of the such as vacuum interrupter between the first terminal and housing, and housing covers the manual handle and leverage assembly that are used for function circuit contact maker.Alternatively, housing is made up of non-conductive material, has the shunt of the conduction of the electrical connections between formation first and second terminal.
Summary of the invention
Invention target
Switching device should be designed to prevent the electric discharge of generation, electric arc or flashover between switch module.The switching device of prior art may need too large space to meet safety regulations namely, in order to prevent electric discharge or electric arc.But, meanwhile, need the compact switching device of the safety guaranteed requiring less space but still there is opposing disruptive discharge.
Therefore a target of the present invention is reduce the flashover between the assembly of switching device or unit, electric discharge or electric arc risk.
Another target of the present invention is for providing the switching device with compact design.
Above-mentioned target of the present invention is by being provided for being electrically connected in distributing electric power the switchgear of electric conductor and realizing, this switchgear comprises the circuit breaker that can be electrically connected to electric conductor, and circuit breaker is to its conductivity housing, this switchgear provides the current path between circuit breaker and electric conductor, and housing holds at least one ways for operating breaker, at least one ways described is removable relative to housing, described housing has outer surface, wherein said housing has level and smooth external shape with the electric field produced by the voltage of the electric current by switchgear that distributes.
The external shape of housing or external shape are level and smooth, and its middle shell does not have the angled external shape of such as sharp corner or edge, and not coarse.
Pass through the present invention, the electric field produced by the voltage of the electric current by switchgear or electric field stress are uniformly distributed in an efficient way, and the risk of flashover between the assembly of switchgear and the housing of housing and the switchgear of surroundings such as another phase or ground, electric discharge or electric arc reduces effectively.Therefore, have that the switching device with one or more switchgear according to the present invention can manufacture compacter and volume is less, and less space is needed for switching device.In addition, any shielding additionally of electric field is avoided.At least one ways being provided for the circuit breaker operated in housing also contributes to being uniformly distributed of electric field.
As the result of the switchgear improved, electric insulation gas required in the encapsulation holding switchgear can be reduced, and may can be used to replace such as SF by air
6.But, switchgear of the present invention with comprise such as SF
6the encapsulation of any insulating gas advantageously combine, and the housing of switchgear can also be full of or comprise any insulating gas.
Circuit breaker is suitable for disconnection/interruptive current path, and is applicable to closed path path.Good several circuit breaker of the prior art is well known to those skilled in the art.Circuit breaker has at least two states.First state, for closed or conduction state, circuit breaker is conducted through its electric current in a state in which, and second state, be off or non-conductive state, circuit breaker disconnects/interrupts the current path by it in a state in which, and circuit breaker is substantially non-conductive in a state in which, and the also any electric current of non-conducting.Generally, circuit breaker is applicable to detection failure situation and once detect that failure condition just cuts off electric current, and then, circuit breaker can be reset (manually or automatically) to recover normally operation.
According to the advantageous embodiment of switchgear of the present invention, circuit breaker is vacuum interrupter, but circuit breaker can be with the form of the circuit breaker of any type, such as SF
6gas contact maker.
According to the advantageous embodiment of switchgear of the present invention, switchgear comprises electric conductor.
Advantageously, housing is made up of suitable conductive material, such as aluminium, such as cast aluminium.But housing also can be made up of the conductive material of copper, zinc or other any appropriate.To cast or molded aluminum hull is not expensive program.Advantageously, housing at ad-hoc location plated with nickel or silver, such as, in electric coupling area.
According to the advantageous embodiment of switchgear of the present invention, the outer surface of housing is smoothly in order to the electric field produced by the voltage of the electric current by switchgear that distributes.The outer surface of housing is level and smooth because outer surface does not have coarse, outstanding or sharp-pointed indenture.Outer surface bends uniformly.By this embodiment, electric field or being uniformly distributed of electric field stress are able to further improvement.The risk of the flashover between the assembly of switchgear or unit, electric discharge or electric arc is able to further reduction, and switching device can have compacter design.
The advantageous embodiment that switchgear according to the present invention is other, the part forming the current path between circuit breaker and electric conductor at least partially of housing.By this embodiment, the distribution of electric field and electric field stress improves further, and can give the compacter design of switching device and not increase the risk of flashover.Between housing and electric conductor, can provide such as following by disclosed other switch to form the current path between housing and electric conductor.
According to another advantageous embodiment of switchgear of the present invention, housing comprises the first end that circuit breaker is mounted to it, and the second end comprised with lower terminal, arrival electric conductor is left from housing via this terminal current path, this housing axially extends between the first end and the second end of housing, and this housing is applicable to the part being formed in the current path extended between the first and second ends, that is, described part extends between the first and second ends.
In US2002/0179571A1, by the current path of contact maker equipment through terminal, through the fixed contact of vacuum interrupter, through the conductive supporting pipe of adapter to band and through taking electric control to, and via conductivity housing from this stay pipe to the second terminal.Therefore, housing self is only the fraction of the current path between the movable contact of vacuum interrupter and the second terminal, and this housing is only along the limited partial conductance electric current of whole housing.In addition, as mentioned above, the multiple different conducting element that housing is in-built is a part for the current path of US2002/0179571A1.In switchgear of the present invention, housing basically forms the whole current path between circuit breaker and terminal, and this housing is along housing axially extended fundamental length direction conduction current, the distribution of the improvement of electric field and electric field stress is provided relative to prior art switchgear, and the risk of flashover between the housing that reduce further the switchgear of housing and surrounding such as another phase.Therefore, switching device can have compacter design, and can avoid or reduce the additional mask of the electric field relevant with surrounding.In addition, less assembly can be used to manufacture switchgear by this embodiment, improve the production of switchgear, and improve the distribution of electric field.
According to another advantageous embodiment of switchgear of the present invention, housing is applicable to the part being formed in the current path extended between housing first ends and terminal, that is, described part extends between first end and terminal.By this embodiment, the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment of switchgear of the present invention, circuit breaker comprises the first contact of conduction and the second contact of conduction, second contact is relative to the first contact and removable relative to housing, and when the first and second contacts, circuit breaker is in the close position, and when the first and second contacts are separated, circuit breaker is in open position, and wherein the second contact is electrically connected in housing at housing first ends place.By this embodiment, the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment again of switchgear of the present invention, during the operation of switchgear, housing is applicable to the current potential of the second contact being substantially equal to circuit breaker.By this embodiment, the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment again of switchgear of the present invention, housing has the interior surface comprising contact surface, second contact of circuit breaker has the sliding contact element with the second contact electrical contact, and sliding contact element housing contact surface slide and with its electrical contact.By this embodiment, contribute to the production of switchgear, and the distribution of electric field also improves further.
According to the advantageous embodiment of switchgear of the present invention, housing has the interior surface comprising contact surface, switchgear comprises the flexible electrical conductor with first end and the second end, the first end of flexible electrical conductor is electrically connected with the second contact of circuit breaker, and the second end of flexible electrical conductor is electrically connected with the contact surface of housing.
According to another advantageous embodiment of switchgear of the present invention, the first end of housing comprises contact surface.
According to another advantageous embodiment of switchgear of the present invention, housing is applicable to the part being formed in the current path extended between the contact surface of housing and terminal, that is, described part extends between contact surface and terminal.By this embodiment, the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment again of switchgear of the present invention, housing holds at least one conductive member, such as, between circuit breaker and electric conductor, form band or the bar of a part for electric current dredging collateral.Advantageously, described conductive member can be formed in a part for the current path extended between the first and second ends, such as, between first end and terminal, or such as between the contact surface and terminal of housing.If it is favourable that housing makes this embodiment by the material of the low conductivity of such as zinc, herein conductive member conduction current.
According to another advantageous embodiment again of switchgear of the present invention, switchgear comprises the switch for housing being electrically connected on electric conductor, switch comprises switch element, switch element is movable to primary importance, housing and electric conductor is electrically connected at the first disposal place switch element, switch element is movable to the second place, disconnect at second position switch element and electric conductor and be electrically connected on housing and earth element, and switch element is movable to the 3rd position, disconnect from earth element from electric conductor at the 3rd position switch element.By this embodiment, the distribution of electric field and electric field stress improves further, and this embodiment makes switching device have the compactness improved further.
According to another advantageous embodiment again of switchgear of the present invention, be electrically connected on the terminal of housing at first position switch element and be connected to electric conductor.By this embodiment, the distribution of electric field and electric field stress improves further, and this embodiment makes switching device have the compactness improved further.
According to the advantageous embodiment of switchgear of the present invention, switch element has first end and the second end, switch element extends between first end and the second end, the terminal of housing is wherein electrically connected at the first end of first position switch element, and the second end of switch element is electrically connected on electric conductor, wherein to disconnect from electric conductor at the second end of second position switch element and be electrically connected on housing, and the first end of switch element is connected to earth element, and be wherein electrically connected on housing in the first and second ends of the 3rd position switch element.By this embodiment, the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment again of switchgear of the present invention, be positioned at the outer surface of housing at the 3rd position switch element.By this embodiment, do not damage the dielectric property of switchgear, and the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment again of switchgear of the present invention, switch element can pivotable about rotating shaft, and can pivotable between first, second, and third position.
According to the advantageous embodiment of switchgear of the present invention, the rotating shaft of switch element is positioned at the outside of the outer surface of housing.By this embodiment, switch element can be mounted to the rotating shaft of outside pivotally, and the distribution of electric field and electric field stress improves further.
According to another advantageous embodiment of switchgear of the present invention, the rotating shaft of switch element is positioned at the outside of switch element.
According to the other advantageous embodiment of switchgear of the present invention, housing has the through hole hung for housing.Therefore, provide effective suspension of housing, this suspension can not weaken the distribution of electric field in the degree of any essence.
According to the advantageous embodiment of switchgear of the present invention, the outer surface of housing, towards through hole and to smooth curved in through hole, therefore, prevents the so-called triple point with high dielectric stress.Very favourable when using the bar inserted in through hole.
According to another advantageous embodiment of switchgear of the present invention, switchgear comprises the bar inserted in housing through-hole, described bar is about its longitudinal axis and rotatable relative to housing, described bar is connected at least one ways described, and described bar and its rotation are suitable for the motion controlling at least one ways described.Therefore, provide the effective control to circuit breaker, and the distribution of electric field can not be weakened in the degree of any essence.Advantageously, when each of multiple phase (such as, three-phase) has the switchgear of innovation mutually, same axle is inserted in the through hole of each housing to control the movement of at least one ways described in all housings.Alternatively, two can be used to draw/push rod, and not use described bar to carry out operating breaker, two draw/push rod in one for cut-off breaker, another is for close circuit breaker.Also be possible for controlling other embodiments of circuit breaker.
According to another advantageous embodiment again of switchgear of the present invention, housing is formed by least one casting component.Advantageously, housing can be formed by two the casting components combined by appropriate device.By these embodiments, effectively circuit breaker be will support, and switchgear and the system of mechanically stable realized.
Above-mentioned target of the present invention is realized equally by the switching device being provided for distributing electric power, described switching device comprises at least one switchgear, wherein said switchgear comprises the feature recorded any one of claim 1 to 14, and/or the feature according to any one of above-described embodiment.Therefore, the switching device of risk of reduction of the flashover between the assembly with compact design and switching device or unit, electric discharge or electric arc is achieved.
According to the advantageous embodiment of switching device of the present invention, described switching device comprises the switchgear for each phase.
Advantageously be applicable to middle pressure and/or high pressure according to switchgear of the present invention and/or switching device, such as 1KV and more than.
Above-described embodiment and feature can be combined by various possible mode and provide further advantageous embodiment.
Embodiment favourable further according to switchgear of the present invention and switching device and more advantages of the present invention is presented from the detailed description of embodiment.
Accompanying drawing explanation
In order to the object of example, in further detail the present invention is described with reference to accompanying drawing by means of embodiment, in accompanying drawing:
Fig. 1 is the schematic partial view of the first embodiment according to switching device of the present invention of three the first embodiments had according to switchgear of the present invention;
Fig. 2-4 is the schematic cross sectional views according to the second embodiment of switching device of the present invention and the second embodiment of switchgear;
The explanatory view of the outside of the second embodiment that Fig. 5 is switchgear shown in Fig. 2-4.
Embodiment
Fig. 1 schematically illustrates the first embodiment according to switching device of the present invention had according to switchgear 102,104,106 of the present invention, and one 102 wherein in switchgear has the housing part opened in order to illustrative object.The switching device illustrated is distributing electric power switching device and comprises several switchgear 102,104,106 that can be loaded in encapsulation (not shown).Encapsulation is penetrated by several electric sleeve pipe (not shown), for each of polyphase system relative to an electric sleeve pipe.Corresponding conducting element 108,110,112 extends to corresponding electric equipment 102,104,106 from each electric sleeve pipe.In the outside of encapsulation, electric sleeve pipe is connected to cable (not shown), and switching device is connected to load or is connected to medium-pressure or high pressure distribution line by cable.
Each switchgear 102,104,106 electrically can be connected to and comprise the electric conductor, made of aluminum and by two casting conductivity housings 120,122,124 of making of components and the circuit breakers 126,128,130 that are arranged on housing 120,122,124 for form of bus bars.A part for housing 120,122,124 and circuit breaker 126,128,130 is stacked.Switchgear 102,104,106 circuit breaker 126,128, provide current path 132 in current path 132, figure by have from bottom to up and thick line through switchgear 102 direction to the right illustrates between 130 and electric conductor.
Each housing 120,122,124 has outer surface 134 and interior surface 136.The external shape of housing 120,122,124 or external shape are the level and smooth electric fields produced by the voltage of the electric current by switchgear 102,104,106 with distribution.The external shape of housing 120 is level and smooth, because housing does not have angled external shape, and does not have coarse place.The outer surface 134 of housing 120,122,124 is also the level and smooth electric field produced by the voltage of the electric current by switchgear 102,104,106 with distribution.The outer surface 134 of housing 120,122,124 is level and smooth, because outer surface 134 does not have coarse place, sharp-pointed outstanding or sharp-pointed indenture.
Housing 120,122,124 formed at least partially circuit breaker 126,128, current path 132 between 130 and electric conductor.Each housing 120 comprises first end or end 138, and comprise the second end or the end 140 of terminal 142, circuit breaker 126 is mounted to first end, and current path 132 leaves housing 120 by terminal 142 and arrives electric conductor, and housing 120 axially extends between first end 138 and the second end 140.Terminal 142 can be connected to switch 144 for housing 120 is connected to electric conductor.
Circuit breaker 126,128,130 is the forms with vacuum interrupter, and comprises conductivity first contact 146 and conductivity second contact 148, second contact 148 in a usual manner relative to the first contact 146 and removable relative to housing 120.When described first and second contacts 146,148 contact, circuit breaker 126 is in closed (conducting) position, and when the first and second contacts 146,148 are separated, circuit breaker 126 is in disconnection (non-conduction) position.Circuit breaker 126,128,130 is routine techniques and for well known by persons skilled in the art, is therefore not described in detail.Be understandable that, also can use other circuit breakers except vacuum interrupter.
Housing 120 holds multiple ways 150,152 for operating breaker 126, and comprising be such as form is helical spring biasing member 150.Biasing member 150 also can be the form of other spring assemblies, such as disk spring etc.Biasing member 150 is connected to the second contact 148 of circuit breaker 120, and is applicable to when circuit breaker 120 is in the close position, lifts one's head 146 biased second contacts 148 relative to first.Biasing member 150 is advantageously non-conductive.Biasing member 150 is axially movable relative to housing 120, and is connected to about the rotatable pivotal arm 152 of rotating shaft 154 successively, and the rotation of pivotal arm 152 causes moving axially of the second contact 148 of the axial motion of biasing member 150 and circuit breaker 120.Each housing 120,122,124 has the through hole 156 of the suspension for housing 120,122,124, and switching device comprises the bar 158 in the through hole 156 inserting each housing 120,122,124.The outer surface 134 of housing 120,122,124 is towards through hole and to smooth curved in through hole.By the described smooth curved of outer surface, prevent and so-called there is high dielectric stress triple point.Bar 158 is about its longitudinal axis 154 and rotatable relative to housing 120, and longitudinal axis 154 is coaxial with the rotating shaft 154 of pivotal arm 152, and bar 158 is connected to pivotal arm 152.The rotation of bar 158 causes pivotal arm 152 to rotate.Bar 158 is applicable to the rotation by controlling pivotal arm 152 thus controls the movement moving axially the second contact 148 controlling circuit breaker 126 of biasing member 150.
The interior surface 136 of housing 120 comprises the contact surface 160 being positioned at its first end 138 place.Second contact 148 of circuit breaker 126 has the sliding contact element 162 with the second contact 148 electrical contact of circuit breaker 126, physical contact and electrical contact and sliding contact element 162 and the contact surface 160 of housing 120 slide.Therefore, the second contact 148 is electrically connected to housing 120 at first end 138 place of housing 120, and housing 120 forms a part for current path 132, and this current path part extends between the contact surface 160 and terminal 142 of housing 120.
Fig. 2-4 schematically shows the second embodiment of the second embodiment according to switching device of the present invention and switchgear.Switching device comprises inside and is equipped with in the metallic packaging 202, figure of multiple switchgear 204 one of them switchgear 204 is only shown.The switchgear do not illustrated in the drawings and the switchgear illustrated are arranged in juxtaposition, and after the switchgear that therefore unshowned switchgear or be hidden in illustrates, or are planar positioned at before the latter, and do not illustrate in the drawings.The wall of encapsulation 202 is penetrated by several electric sleeve pipe 206, for each corresponding electric sleeve pipe 206 of polyphase system.Corresponding conducting element 208 extends in corresponding switchgear 204, figure from each electric sleeve pipe 206 and one of them conducting element 208 is only shown.Be connected to unshowned cable at the external electrical sleeve pipe 206 of encapsulation 202, switching device is connected to load or is connected to medium-pressure or high pressure distribution line by cable.
Disclosed in above composition graphs 1, each switchgear 204 of the second embodiment comprises circuit breaker 126, ways 150,152 and bar 158.The housing 210 of the switchgear 204 of Fig. 2-4 has the design slightly different relative to the housing of Fig. 1.The terminal 142 of the second embodiment has different positions, and housing 210 has the following casing member 212 that will describe in detail.In addition, switchgear 204 comprises the flexible electrical conductor 214 with first end or end 216 and the second end or end 218, and there is no sliding contact element, the first end 216 of flexible electrical conductor 214 is with the second contact 148 physical connection of circuit breaker 126 and be electrically connected, and contact surface 160 physical connection of the second end 218 of flexible electrical conductor 214 and housing 210 and being electrically connected.Flexible electrical conductor can be in strip form, the band that such as thin copper bar is formed.But, those skilled in the art's other possible flexible electrical conductors known.Composition graphs 1 is mentioned, each switchgear 204 can be electrically connected to electric conductor 220 and also comprise electric conductor 220 in this article, electric conductor 220 is the form of bus, and each switchgear 204 comprises the switch 222 for housing 210 being electrically connected to electric conductor 220.Switch 222 comprises and is movable to primary importance (see Fig. 2), be movable to the second place (see Fig. 3), and be movable to the conductivity switch element 224 of the 3rd position (see Fig. 4), wherein be electrically connected to the terminal 142 of housing 210 at first position switch element 224 and be connected to electric conductor 220, disconnect from electric conductor 220 at second position switch element 224, and be electrically connected to casing member 212 and the earth element 226 of housing 210, disconnect from both earth elements 226 from electric conductor 220 at the 3rd position switch element 224.
The groove that switch element 224 is applicable to being arranged in housing 210 moves, and can provide terminal 142 and casing member 212 in the cell.Therefore, the external shape of housing 210 and outer surface keep level and smooth.
Switch 222 act as so-called safety switch, or selector switch, itself is not also suitable for and disconnects medium-pressure or high pressure circuit, but only for circuit breaker therefrom to be pressed after performing open circuit at release unit or high-tension line disconnects.The reason using above-mentioned three positions of switch element 224 during the operation of switching device is known for those skilled in the art, and is not described in detail at this.The second place of switch 222 can be considered to home, can carry out the working service and the service that such as cable are connected to switching device.
Switch element 224 can pivotable about rotating shaft 228, and can pivotable between first, second, and third position.The rotating shaft 228 of switch element 224 is positioned at outside the outer surface 234 of housing 210, and switch element 224 is pivotally mounted its rotating shaft 228 to housing 210 via intermediary element 225, and switch element 224 is connected to rotating shaft 228 by intermediary element 225.The rotating shaft 228 of switch element 224 is positioned at outside switch element 224.Switch element 224 have first end or end 230, and the second end or end 232, switch element 224 extends between.At primary importance (see Fig. 2) place, first end 230 physics of switch element 224 and be electrically connected to the terminal 142 of housing 210, and the second end 232 physics of switch element 224 and be electrically connected to electric conductor 220.At the second disposal place (see Fig. 3), the second end 232 of switch element 224 disconnects from electric conductor 220, and physics and be electrically connected to the casing member 212 of housing 210, and the first end 230 of switch element 224 is physically connected to earth element 226.In the 3rd position (see Fig. 4), switch element 224 is positioned at the outer surface 234 of housing 210, and the first and second equal physics in end 230,232 of switch element 224 and be electrically connected to housing 210, wherein first end 230 is physically connected to the casing member 212 of housing 210, and the second end 232 is physically connected to terminal 142.
Terminal 142 and casing member 212 can also be designed to formed a part, namely terminal can with casing member one.
By the innovative design of switch 222, the distribution of electric field and electric field stress is improved, and makes switching device have compacter design.
Fig. 5 illustrates the outside of the housing 210 shown in Fig. 2-4.The external shape of housing 210 and the outer surface 234 of housing 210 are level and smooth electric fields produced by the voltage of the electric current by switchgear with distribution.The external shape of housing 210 or external shape are level and smooth, because housing does not have angled external shape and do not have coarse place.The outer surface 234 of housing 210 is level and smooth, because surface does not have coarse place, sharp-pointed outstanding or sharp-pointed indenture.
During switchgear operation, each housing of above-described embodiment is applicable to be in the current potential of the current potential of the second contact substantially equaling circuit breaker.Each housing of above-described embodiment is applicable to the part forming current path, this current path part extends between the first and second ends of housing, more accurately, extend between the first end and terminal of housing, and be more accurately, extend between the contact surface and terminal of housing.
Be understandable that switching device can comprise multiple all switching devices described above or unit.For each electric phase place, there is the common bus of electric conductor as described above, described bus extends to another unit from a unit.For multiple switching device/unit, encapsulation can be or can not be common.Encapsulation can be full of electric insulation gas or admixture of gas, and this electric insulation gas or admixture of gas can be pressurized.The encapsulation being full of air is also possible.
The present invention should not be considered as limiting in illustrated embodiment, but the scope that those skilled in the art can not exceed appending claims is changed in many ways or revises the present invention.
Claims (13)
1. the switchgear for distributing electric power (102,104,106, 204), it can be electrically connected on electric conductor (220), described switchgear comprises: the circuit breaker (126,128,130) that can be electrically connected on described electric conductor (220), and the conductivity housing (120,122,124 that described circuit breaker (126,128,130) is mounted to, 210), described switchgear (102,104,106, 204) between described circuit breaker (126,128,130) and described electric conductor (220), current path is provided, and described housing (120,122,124, 210) at least one is held for operating the ways (150,152) of described circuit breaker (126,128,130), at least one ways described (150,152) is removable relative to described housing, described housing (120,122,124, 210) there is outer surface (134, , and described housing (120,122,124 234), 210) there is level and smooth external shape with distribution by by described switchgear (102,104,106, 204) electric field of the voltage generation of electric current, wherein said switchgear (102,104,106, 204) comprise for by described housing (120,122,124, 210) switch (222) of described electric conductor (220) is electrically connected to, described switch (222) comprises and is movable to primary importance, is movable to the second place and is movable to the switch element (224) of the 3rd position, and described in described primary importance, switch element is electrically connected to described housing (120,122,124, 210) and be connected to described electric conductor (220), described in the described second place, switch element disconnects from described electric conductor (220) and is electrically connected to described housing and is connected to earth element (226), described in described 3rd position, switch element is from described electric conductor (220) and disconnect from described earth element, wherein said switch element can pivotable and described first about rotating shaft (228), second and the 3rd can pivotable between position, it is characterized in that, the described rotating shaft of described switch element is positioned at outside the described outer surface of described housing, and be in described 3rd position, described switch element is positioned within the described outer surface of described housing.
2. switchgear according to claim 1, is characterized in that the part being formed in the described current path between described circuit breaker (126,128,130) and described electric conductor (220) at least partially of described housing.
3. switchgear according to claim 2, is characterized in that described housing (120,122,124; 210) first end (138) that described circuit breaker (126,128,130) is mounted to is comprised, and comprising the second end (140) of terminal (142), described current path (132) leaves described housing (120,122,124 by described terminal (142); 210) described electric conductor (220) is arrived, described housing (120,122,124; 210) axially extend between described first and second ends (138,140), and wherein said housing (120,122,124; 210) part being formed in the described current path extended between described first and second ends of described housing is applicable to.
4. switchgear according to claim 3, is characterized in that described housing (120,122,124; 210) part for the described current path extended between the described first end of described housing and described terminal is applicable to be formed in.
5. the switchgear according to claim 3 or 4, it is characterized in that described circuit breaker (126,128,130) comprises conductivity first contact (146) and conductivity second contact (148), described second contact is relative to described first contact and relative to described housing (120,122,124; 210) removable, and when described first and second contacts (146,148) contact, described circuit breaker (126,128,130) is in the close position, and when described first and second contacts are separated, described circuit breaker (126,128,130) is in open position, and wherein said second contact first end place described in it is electrically connected to described housing.
6. switchgear according to claim 5, is characterized in that at described switchgear (102,104,106; 204) during operation, described housing (120,122,124; 210) current potential of described second contact (148) current potential being substantially equal to described circuit breaker (126,128,130) is applicable to be in.
7. the switchgear according to claim 5 or 6, is characterized in that described housing (120,122,124; 210) there is the interior surface (136) comprising contact surface (160), described second contact of wherein said circuit breaker (126,128,130) is provided with the sliding contact element (162) with described second contact electrical contact, and wherein said sliding contact element (162) slides and electrical contact with the described contact surface (160) of described housing.
8. the switchgear according to claim 5 or 6, is characterized in that described housing (120,122,124; 210) there is the interior surface comprising contact surface (160), wherein said switchgear (102,104,106; 204) flexible electrical conductor (214) with first end (216) and the second end (218) is comprised, the described first end of described flexible electrical conductor (214) is electrically connected with the second contact of described circuit breaker (126,128,130), and the described the second end of described flexible electrical conductor (214) is electrically connected with the described contact surface (160) of described housing.
9. the switchgear according to claim 7 or 8, is characterized in that described housing (120,122,124; 210) part for the described current path extended between the described contact surface (160) of described housing and described terminal (142) is applicable to be formed in.
10. the switchgear according to any one of claim 1 to 9, is characterized in that described housing (120,122,124; 210) through hole (156) hung for described housing is provided with.
11. switchgear according to claim 10, it is characterized in that described switchgear (102,104,106; 204) insertion described housing (120,122,124 is comprised; 210) bar (158) in described through hole (156), wherein said bar is about its longitudinal axis (154) and rotatable about described housing, wherein said bar is connected to described at least one ways (150,152), and wherein said bar and its rotation are applicable to the movement controlling at least one ways described.
12. switchgears according to any one of claim 1 to 11, is characterized in that described housing (120,122,124; 210) be made up of at least one cast part.
13. 1 kinds of switching devices for distributing electric power, described switching device comprises at least one switchgear (102,104,106; 204), it is characterized in that described switchgear comprises the feature according to any one of claim 1 to 12.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2010/070556 WO2011073452A1 (en) | 2009-12-17 | 2010-12-22 | A switching device and a switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103282991A CN103282991A (en) | 2013-09-04 |
| CN103282991B true CN103282991B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080070892.2A Expired - Fee Related CN103282991B (en) | 2010-12-22 | 2010-12-22 | A kind of switchgear and switching device |
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| Country | Link |
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| CN (1) | CN103282991B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105283939B (en) * | 2013-03-28 | 2017-07-07 | Abb 技术有限公司 | Switch module, the switchgear including switch module, the switchgear including switching device and cooling means |
| CN105225883B (en) * | 2014-06-26 | 2017-12-15 | 西门子公司 | Sub-component and its earthed switch are touched in quiet striking |
| NO3104390T3 (en) * | 2015-06-11 | 2018-01-06 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0291762A2 (en) * | 1987-05-06 | 1988-11-23 | AEG Sachsenwerk GmbH | Metal-clad, gas filled, multiphase high voltage switchgear |
| US5276286A (en) * | 1991-08-28 | 1994-01-04 | Gec Alsthom Energie Inc. | Exposed high voltage outdoor disconnector for operation under icing conditions |
| CN101243530A (en) * | 2005-08-22 | 2008-08-13 | 西门子公司 | Insulating element for a medium-voltage switchgear |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001143582A (en) * | 1999-11-18 | 2001-05-25 | Meidensha Corp | Gas insulation switch |
| AUPQ672300A0 (en) * | 2000-04-05 | 2000-05-04 | Nu-Lec Industries Pty Limited | Isolating circuit breaker and circuit protection arrangement |
| CN100337376C (en) * | 2002-09-30 | 2007-09-12 | 三菱电机株式会社 | Air insulation opening or closing device |
-
2010
- 2010-12-22 CN CN201080070892.2A patent/CN103282991B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0291762A2 (en) * | 1987-05-06 | 1988-11-23 | AEG Sachsenwerk GmbH | Metal-clad, gas filled, multiphase high voltage switchgear |
| US5276286A (en) * | 1991-08-28 | 1994-01-04 | Gec Alsthom Energie Inc. | Exposed high voltage outdoor disconnector for operation under icing conditions |
| CN101243530A (en) * | 2005-08-22 | 2008-08-13 | 西门子公司 | Insulating element for a medium-voltage switchgear |
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| CN103282991A (en) | 2013-09-04 |
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