Summary of the invention
The purpose of at least some embodiments of the disclosure is completely or partially to overcome the disadvantages mentioned above of prior art systems,
And it provides to the more compact substitution of the prior art.
The purpose and other purposes are realized by the valve gear limited in the appended independent claim.Other embodiments
It is limited by dependent claims.
Summarize aspect according to first, provide a kind of valve gear, (for example, at least including multiple valve units for being electrically connected in series
Two valve units).First valve unit includes wherein being disposed with the container that at least converter unit stacks.Container is at least partly filled out
Filled with electrical isolation gas.Valve gear further includes at least one first connector, which includes at one end by container
The first valve unit unit be electrically connected to the second valve unit unit the first busbar element.First connector is exhausted by electricity
Edge gas-insulated.In addition, valve gear includes at least one second connector, the second connector includes for the other end in container
The busbar element of the connection of another unit of the first valve unit at place.
In valve gear defined above, the electrical isolation of converter unit in valve unit passes through closing in a reservoir exhausted
Edge gas obtains.In addition, the container is equipped for the connection of the busbar at the both ends (such as opposite end) of container, this permits
Perhaps the more compact arrangement of valve unit.Valve unit is electrically connected in series.
In valve gear defined above, valve unit includes the first connector at one end of its container, is used for it
The converter unit of stacking is connected to the list of the second valve unit (for example, one or one continuous adjacent in valve gear) stacking
Member.In addition, the second connector is arranged on the other end of container, with the connection of another unit stacked for the first valve unit.
Therefore, valve unit itself provides more compact solution, because carrying out for that will form the multiple converter units stacked
The conductor or busbar of connection extend to the other end from one section of container, limit which reduce the space for the air gap and right
The needs of any additional shielding element, if two of the output unit stacked with the input unit and valve stacked to valve connect
It is at the same end of container, i.e., closer to each other, then it may be the case that.
According to some embodiments, the second connector is configured as the unit of the first valve unit being connected to third valve unit
The unit that (for example, one or one continuous adjacent in valve gear) stacks.Second connector can be electrical isolation.
According to some embodiments, the first connector and the second connector can be positioned at the opposite ends of container.Specifically, first
Connector, which can be configured as, is electrically connected to the second valve for the upper unit (for example, one that is located at the top stacked) that valve stacks
The upper unit of element stack.Similarly, the second connector can be configured as the lower unit for stacking valve and be electrically connected to
Lower unit that the valve of three valve units stacks (for example, valve stack in minimum one).For example, at column shape container (or shell)
In the case where, the first connector can be disposed in the first base portion of column shape container, and the second connector can be disposed in
Second base portion of the column shape container opposite with the first pedestal.
Wherein container, which refers to, can wherein arrange multiple converter units to form the shell or case of converter unit stacking.
Container can axially in the first end (or base portion or end) for being located at two separate location axially and
Second end extends between (or base portion or end).The distance between both ends of container axially correspond to the height of container
Degree.
Wherein converter unit stacks the column for referring to converter unit, that is, the multiple converter lists pegged on top of each other
Member.Then, valve gear is considered the arrangement of column adjacent to each other, stacks wherein column correspond to converter unit, column quilt
It is arranged in at least partly container by insulating gas filling.It should be appreciated that in two continuous converter units of stacking
Between there may be with insulating gas gap.
The axial direction that the element stack of valve unit can be extended along container is arranged, so that in axial direction limiting
Fixed multiple positions, and unit is disposed at this position.Element stack may include with HV capacitor shields (or HV electricity
Dizzy shielding) multiple converters.
According to some embodiments, multiple valve units can be arranged side by side, this provides more compact solution.
Valve gear can correspond to the arm at power converter station.In the number of valve unit in valve gear and each valve unit
The number of cell position determine the sum of the cell position in arm.
According to some embodiments, the container of valve unit can extend along vertical direction, so that valve unit is adjacent to each other.
According to embodiment, the first connector can be arranged to the upper unit that the first valve unit stacks being electrically connected to the
The upper unit (for example, unit being located at highest level in two continuous valves stackings of connection) that two valve units stack.It is similar
Ground, the second connector can be arranged to for the lower unit that the first valve unit stacks being electrically connected under third valve unit stacking
Portion's unit (for example, connection is located at the unit at the highest level in two continuous valves stackings).
According to some embodiments, the busbar element of at least one of the first connector and second connector can be U
Shape.This shape promotes connection of the upper unit of the first valve unit to the upper unit of the second valve unit, and still providing must
The air gap wanted.Adjacent valve unit can have equal number of converter unit, or be designed so that it substantially
Height having the same, to promote the connection of the unit between two continuous valve units.
In some embodiments, second and third valve specific equivalent in the first valve unit.However, in other embodiments,
Any number of unit can be used in valve unit, or the valve unit of different height can be used.
According to some embodiments, multiple valve units can be aligned to form the matrix of an at least row or column for column.
According to some embodiments, at least one of valve unit of valve gear may include passing for being connected to exchange (AC)
The plug-in cable terminal or gas-insulated busbar of defeated line, and another in valve unit may include straight for being connected to
Flow another plug-in cable terminal or gas-insulated busbar of (DC) transmission line.Only having in the configuration there are two valve unit,
First valve unit may include plug-in cable terminal or gas-insulated busbar, for being connected to AC at one end of its container
Transmission line, and in its opposite end, the first valve unit is connected to the second valve list via the first connector being electrically insulated by gas
Position.Then, the unit at the opposite end of the second valve unit can be via plug-in cable terminal or gas-insulated busbar quilt
It is connected to DC transmission line.
According to some embodiments, the busbar element of the second connector can be embedded into solid insulating material (such as epoxy
Resin) in or positioned at least partly by insulating gas filling pipeline in.
According to some embodiments, the second connector may include insulation compartment, wherein being disposed with for the first valve unit
The busbar element of the connection (such as connection with third valve unit) of another unit.Insulation compartment can form valve gear
Base portion.In these embodiments, valve unit can be located at the top of compartment or cabinet, be disposed in compartment or cabinet for by valve
Unit is connected to another or the connector (or connecting element) for valve unit to be connected to AC or DC transmission line.Compartment can be with
Such as it is disposed in the bottom of the container of valve unit.Therefore, compartment may be used as the pedestal of the container for installing valve unit.
According to some embodiments, compartment may include solid insulating material (such as epoxy resin) or insulating gas to be used for
The electrical isolation of the busbar element of unit connection between continuous valve unit.
According to some embodiments, the spacer element (or spacer) including insulating materials can be disposed in the first valve unit
Container one end, for the container of the first valve unit to be separated with the container of adjacent valve unit.Spacer element for example can be with
The engagement being disposed between one end of the container of the first valve unit and one in the first connector and/or the second connector
Place.However, spacer element can also be disposed in container along the busbar for connecting the converter unit stacked, that is, exist
Before structure (or physics) engagement between container and the first connector.
For example, the first valve unit can equipped with for the second valve unit and third valve unit (or with the first valve unit
Any other element that is connected to of unit) separation two spacer elements.Spacer element can be also used for support from container
One end extend to the other end valve stack.However, including one end (such as bottom of insulating materials and container in the second connector
End) in some embodiments for being sealed by this insulating materials, valve unit can only include an individual spacer element (specifically
Top for sealing container).
According to some embodiments, spacer element may include on the crosscutting direction of the axial direction extended along with container
The first part of extension.Spacer element is used for sealing container.In some embodiments, spacer element can also include along first
The second part that at least one of outer wall of the outer wall of the container of valve unit and the first (or second) connector extends.
According to some embodiments, the insulating gas in container can be sulfur hexafluoride (SF6), nitrogen (N2), air and do
At least one of dry air.According to some embodiments, the insulating gas of the insulation for the second connector (such as in aforementioned reality
Apply in pipeline or compartment described in some in example) it is also possible to sulfur hexafluoride (SF6), nitrogen (N2), air and dry empty
At least one of gas.It should be appreciated that gas can be the mixture of gas with various, such as SF6And N2Mixture.It should manage
Solution, the present disclosure is not limited to this gases, and are contemplated that other insulating gas.In addition, gas can be compressed gas, that is, exist
Higher than the gas under the specified pressure of atmospheric pressure.
According to some embodiments, converter unit may include capacitor shields, capacitor element and at least one switch
Device.Switching device may, for example, be the component based on semiconductor, including such as thyristor or IGBT.In more specific embodiment
In, unit, which can be, is disposed with having for switching device (or for constructing at least part of semiconductor subassembly in converter)
The dish-type unit of discap element.
According to some embodiments, converter unit stacks the axial direction that can be extended along with container and is coaxially arranged,
Thus even more compact valve unit is provided.
According to some embodiments, container can have cylinder body shape.In some embodiments, valve is stacked by disk-shaped transducer
Unit is formed, so that being formed, there is the converter unit of cylinder body shape to arrange, this provides even more uniform electric field.As a result, gas
Gap can be further reduced, and provide even more compact valve gear.
General, it will be appreciated that container may include the conductive material of such as metal.Alternatively, container can be by outside it
Another material on surface coated with conductive layer is made.It is then possible to which the conductive material of container or coating are used to be grounded.
According to some embodiments, valve gear be may further include for being inserted into converter unit heap at one end of container
Folded electrical shielding and/or the electrical shielding stacked for being inserted into converter unit at the opposite end of container.
According to some embodiments, power converter station can be provided.Power converter station may include at least two as before
State valve gear defined by any embodiment in embodiment.Power converter station can be high voltage direct current (HVDC) converter station.
The disclosure is suitable for the high-voltage power equipment with various voltage levels, wherein being intended to provide insulation environment.This public affairs
It opens for it is expected that the application of more compact power apparatus is usually advantageous, is such as in the space for installing electric power equipment
It is limited to apply and/or in marine wind electric field application.
It should be understood that, it can be envisaged that use other implementations of all possible combinations of the feature described in the above-described embodiments
Example.
Specific embodiment
Hereinafter, the present exemplary embodiment is more fully described with reference to the drawings, is shown in the attached drawings current
Preferred embodiment.However, the present invention can be embodied in many different forms, and it should not be construed as being limited to this paper institute
The embodiment of elaboration;On the contrary, providing these embodiments for comprehensive and integrality, and the scope of the present invention is passed completely
Up to those skilled in the art.
With reference to Fig. 1, valve unit 100 according to the embodiment is described.
Fig. 1 shows including container (or shell) 130 and is arranged as in shell 130 valve of the multiple units 120 stacked
The cross-sectional view of unit 100.Unit 120 is disposed in top of each other and is connected in series, to form electricity in container 130
Gas equipment or system (for example, converter).
Container 130 can extend mainly along axial direction 112, and can be for example with from a base surface or area
Domain 118 extends to the cylinder of another base surface or region 119 (i.e. between axially 112 two separate location)
Shape.In a particular embodiment, shell 130 can be axially 112 cylinder extended, and unit 120 is along axis
It is arranged over each other to direction 112, to axially 112 limit multiple cell positions.
As reference Fig. 3 to be discussed in greater detail, unit may include at least one capacitor element and switching device.Conversion
The stacking of device unit 120 may include the high-voltage capacitor shielding labeled as 122, wherein being disposed with capacitor element.Unit 120
HV capacitor shields 122 surround switching device.In other words, the capacitor shields 122 of unit 120, which are used as, is used for capacitor element
Shell.Capacitor shields can be formed with the annular of square-section.In a stack, the insulation by being located in container
Gas separates two continuous converter units, each includes the capacitor shields with capacitor element and switching device.
In the configuration, HV capacitor shields are considered as a part of unit so that unit include switching device, capacitor element and
Its capacitor shields, in this case, stacking includes being arranged in that with some gas gap between two consecutive units
A series of units at the top of this.As shown in Figure 1, the switching device of converter unit 120 is surrounded by HV capacitor shields 122.
The outer surface of shell 130 can be made of the conductive material of such as metal, or can be covered by conductive material, make
The outer surface for obtaining shell 130 can be grounded.
One end that Fig. 1 also shows for stacking valve unit is connected to the first connector 160 of another valve unit, and
The other end for stacking valve unit is connected to the second connector 170 of another valve unit.
It can be including the container that converter unit stacks closed or sealing.For example, spacer element can be arranged
At one in the end of shell or base surface.As shown in Figure 1, the first spacer element 116 is disposed in the one of container 130
It holds at 118, and the second spacer element 114 is disposed at the opposite end 119 of container 130.More specifically, the first spacer element
116 can be disposed in the joint between the first connector 160 and the top 118 of container 130, and the second spacer element 114
The joint between the second connector 170 and the bottom end 119 of container 130 can be disposed in.
First spacer element 116 and the second spacer element 114 can be for example made of insulating material.
Alternatively, as will be discussed in greater detail see, for example Fig. 4, the bottom end 119 of container 130 can be close by insulating materials
Envelope, wherein the busbar element of the second connector can be embedded into for being electrically insulated.
First connector 160 includes busbar element 161, which is arranged to converter unit heap
The stacking that folded (and more specifically, upper unit stacked) is connected to adjacent valve unit (is not shown, but in figs. 4-6 in Fig. 1
It shows).First connector 160 may include the busbar element made of single-piece bending, adjacent positioned at two in order to connect
Two units at the top of valve cell element stack.Alternatively, as shown in Figure 1, the busbar element of the first connector 160 can be with
Including multiple sections.For example, the first connector can have node element 162, for connecting the first segment of busbar element
Another section of the busbar element extended to axially 112, for being electrically connected in series converter unit 120.In Fig. 1
Shown in specific embodiment, node element 162 is configured as intersecting (example in the axial direction 112 extended along with container 130
As orthogonal) side boot up the section of busbar element 161, to reach adjacent valve unit.
Second connector 170 includes busbar element 171, which is arranged to converter unit
The stacking that stacking (more specifically, the lower unit stacked) is connected to adjacent valve unit (is not shown, but for example in Fig. 4-6 in Fig. 1
In).Second connector 170 may include the busbar element made of single-piece bending, be located at two adjacent valves in order to connect
Two units of the bottom of the stacking of unit.Alternatively, as shown in Figure 1, the busbar element of the second connector 170 may include
Multiple sections.For example, the second connector can have node element 172, for the first segment of busbar element to be connected to edge
Extend another section of busbar element of axial direction 112, for being electrically connected in series converter unit 120.It is shown in Fig. 1
Specific embodiment in, node element 172 is configured as intersecting in the axial direction 112 extended along with container 130 (such as just
Hand over) side boot up the section of busbar element 171, to reach adjacent valve unit.
First connector 160 and the second connector 170 can be configured as guidance busbar element in the opposite direction, with
Just the stacking for reaching two different valve units, so that the series connection of valve unit is capable of forming bigger converter.
In addition, container 130 can be at least partially filled with insulation for the electrical isolation between converter unit 120
Gas 115, insulating gas 115 can be such as SF6、N2, air, dry air or these gases mixture.However, should
Understand, the present disclosure is not limited to these examples, and other gases with similar insulating property (properties) can be used, and are specifically free of
SF6Gas.In addition it is possible to use the compressed gas of the pressure with about several bars.For example, shell 130 can filled with 2 to
The SF of pressure in the range of 6 bars6。
In some embodiments, at least one of unit, unit group or stacking can be arranged detachably, so that its
It can be removed from container.Specifically, element stack can be (or can be removed) dismountable from shell, this is for example for stacking
Unit, unit group or the repairing even entirely stacked or replacement are advantageous.It, can be by removing the first interval member with reference to Fig. 1
Part or spacer 116, be mounted on column shape container 130 top end the first connector 160, to open container 130, and lead to
Cross the top for optionally removing the second spacer element 114 and removable container 130, unit 120 is stacked from the insertion of shell 130 or
It removes.Fig. 1 shows container 130 and can be made of at least two workpiece, and wherein major part is wherein to be disposed with element stack
Cylinder, and top section is shaped as the bottleneck being shelved in major part by flange 117, to form flask
130.Then, cylinder is stacked 112 can axially slide in cylinder shell 130.
In valve unit 100 shown in Fig. 1, converter unit stacking can be at the axial direction side extended along with container 130
It is coaxially arranged to 112.It specifically, can be axially square by spacer element 114,116 and busbar (or conductor) 140
It is aligned to 112 holding units stacking, what converter unit was connected in series by busbar (or conductor) 140, container 130
In axial direction 112 extend, wherein busbar 140 is maintained at the top 118 of container 130 by the first spacer element 116, and the
Busbar 140 is maintained at the bottom end 119 of container 130 by two spacer elements 114.
Valve unit 100 may be fitted with top capacitor shielding 111 and bottom capacitors shielding 113, in top capacity
The stacking of converter unit 120 is inserted at the top 118 of container 130 in device shielding 111, in bottom capacitors shielding 113
Converter unit 120 stacks the bottom end 119 for being inserted in container 130.
It should be appreciated that although the uniformity of electric field of the bar shape shape for inducting in this electrical equipment provides one
A little advantages, but the present disclosure is not limited to the shapes of this shell, and are contemplated that other geometries.
Valve unit 100 component or element (such as unit, unit group, element stack, top capacitor shielding, bottom electricity
One or more of container shield, the first connector and second connector each of are worked as) it can be moveable or mould
Block, in order to promote its replacement in the case where not influencing other elements.It applies, has such as referring more specifically to HVDC
The cylinder-type HVDC converter of multiple cell positions with reference to described in Fig. 1 is advantageous relative to traditional marine converter station
, because it avoid the need for or at least reduce the gap of the element for manual cut-in valve unit.
In addition, the voltage (it may be about a few kV) between the capacitor of unit 120 will be exposed to and be enclosed in shell
Compressed gas in 130.
With reference to Fig. 2, unit 120 according to the embodiment is more specifically described.
Fig. 2 shows including capacitor shields 122 and the unit of the switching device of such as component 127 based on semiconductor
120.At least one capacitor element (not shown) is arranged or is enclosed in capacitor shields 122 (that is, by capacitor shields
In the volume that the inside of main body limits).In the embodiment shown in Figure 2, capacitor shields 122 surround semiconductor subassembly 127 simultaneously
It and is dish type.Capacitor shields 122 are ring-shaped and limit centre bore, and semiconductor subassembly 127 can be placed in the centre bore
In.Therefore, unit 120 shown in Fig. 2 is particularly useful for the formation the cylinder of the converter unit in bar shape container to be arranged in
Shape stacks.
In the case where without loss of generality and for illustration purposes only, according to desired electrical equipment (for example, conversion
The type of device), semiconductor subassembly can be one or more thyristors or the arrangement of IGBT.
Multiple units 120 can along container axial direction (especially along vertical direction but not necessarily) each other
On arrange, in-between have gas gap, in structure formed stack (such as in the feelings of the overlapping of multiple plate-like units
Under condition).Multiple units 120 can be electrically coupled together to form desired electrical equipment via busbar element 140.
Fig. 3 shows the example that valve stacks 150, and plurality of converter unit is in axial direction arranged over each other,
There is gas gap 188 between converter unit.It includes multiple units 120 that valve, which stacks 150, can be equal to reference to Fig. 2
The converter unit 120 of description.Fig. 3 shows the converter unit with the switching device 127 surrounded by capacitor shields 122
Stack 150 cross-sectional view.Still it should be appreciated that two continuous units in stacking can be the same or different from each other.Fig. 3 is also
Busbar 140 is shown, multiple converter units 120 are connected in series to form bigger converter in bottom capacitors shielding 113.
Fig. 4 shows valve gear 400 according to the embodiment.
Valve gear 400 include be electrically connected in series multiple valve units 410,420,430,440 and 450 (in this example for
Five).However, the present disclosure is not limited to the valve gears including five valve units.Valve gear may include any number of valve unit,
For example, at least two valve units.
In the embodiment shown in fig. 4, valve unit is arranged side by side.It is every in valve unit 410,420,430,440 and 450
One includes container, wherein at least one for being disposed with converter unit stacks 150.Each of valve unit can be formed compared with
At least part of big converter (it is formed by the series connection of multiple element stacks of valve unit).The container of valve unit
Electrical isolation gas 115 can be at least partially filled with.Each of valve unit 410,420,430,440 and 450 can wait
It is same as the valve unit 100 with reference to Fig. 1 description.
In valve gear 400 shown in Fig. 4, container (or valve unit) extends along vertical direction, so that valve unit is each other
It is adjacent.The axial direction that each of the container of valve unit 410,420,430,440 and 450 extends along can substantially be put down
Row.
In addition, multiple valve units can be aligned to form a ranks, as shown in Figure 4.Specifically, valve dress shown in Fig. 4
Set the arm that can form converter station.
Valve gear 400 can also include at least one first connector 460 comprising the first busbar element 461, first
The unit 421 for being located at one end (specifically top) of the first valve unit 410 is electrically connected to positioned at the second valve by busbar element 461
Another unit 441 of one end (specifically top) of unit 420.First connector 460 is insulated by electrical isolation gas 465.More
Generally, the first connector 460 is arranged to the upper unit that the first valve unit 410 stacks being electrically connected to the second valve unit
420 upper units stacked.As shown in figure 4, the first connector 460 and especially busbar element 461 can be U-shaped.
Specifically, the first connector 460 may include at least one pipeline or tubular element, be arranged to the first valve
One end of the container of unit 410 is connected to the other end of the container of the second valve unit 420.Busbar element 461 is located in pipeline,
The element stack of the first valve unit 410 to be electrically connected to the element stack of the second valve unit 420.Pipeline can be at least partly
It is filled by insulating gas 415, so that busbar element 461 insulate.
Valve gear can also include the connector of the first kind, that is, be similar to the first connector 461, to be used for the 4th valve
Unit 440 is connected to the 5th valve unit 450.
Valve gear can further include the second connector 470 comprising busbar element 471, busbar element 471
Another unit (the especially bottom unit 431 of the first valve unit 410) for being located at the other end of the first valve unit is connected to
The bottom unit 431 of another unit 451 of third valve unit 430, especially third valve unit.Second connector and specific
Its busbar element 471 of ground is electrical isolation.More generally, the second connector 470 is arranged to stack the first valve unit 410
Lower unit be electrically connected to third valve unit 430 stacking lower unit.
Arrangement shown in Fig. 4 be it is symmetrical so that the 4th valve unit 440 and the 5th valve unit 450 with the second valve unit
420 modes similar with the first valve unit 410 are connected and arrangement.In this arrangement, third valve unit 430 and the 5th valve unit
Each of 450 equipped with for be connected to electrical system (or external bus) a plug-in cable terminal 482,
484.Plug-in cable terminal (or any other gas-insulated busbar) can be used for for valve gear being connected to transformer or DC
Electrode in Gas Insulated System.
As shown in figure 4, valve gear 400 includes plug-in cable terminal 482, plug-in cable terminal 482 will be for that will mark
Element stack for 430 third valve unit is connected to AC transmission line.In addition, valve gear 400 includes plug-in cable terminal
484, plug-in cable terminal 482 is used to the element stack of the 5th valve unit labeled as 450 being connected to DC transmission line.
Plug-in cable terminal 482,484 can be designed to the cable connection via some type to another valve unit or
Electrical system.
Valve gear 400 may, for example, be the converter of converter station (or its at least part), and can be used for by into
Enter AC power and is converted into output DC power.
As described in by reference to Fig. 1, the container of valve unit can be sealed by spacer element.For example, spacer element 416
It can be disposed at the end of the container of the first valve unit 410 or one in base surface.First spacer element 416 is by cloth
It sets at the top of the container of the first valve unit 410, and the second spacer element 414 is disposed in the container of the first valve unit 410
At opposite end (i.e. bottom).
Spacer element can be made of insulating material, such as epoxy resin.Spacer 416 may include being transverse to axial direction
The first part that the side in direction upwardly extends, container in axial direction extend, to be used for the first valve unit 410 and the second valve list
Position 420 separates.Spacer (or connector) 416 can also include connecting along the outer wall of the shell of the first valve unit 410 and first
The second part that the wall of device 460 extends.
In device 400 shown in Fig. 4, the output of the first valve unit 410 is connected to second by the first connector 460
The input (vice versa) of valve unit 420 is outdoor without any cable or busbar.
In valve gear 400 shown in Fig. 4, the busbar element 471 of the second connector 470 is exhausted by insulating gas 475
Edge, insulating gas 475 can be such as SF6、N2, air, dry air or these gases mixture.It will be appreciated, however, that
The present disclosure is not limited to these examples, and other gases with similar insulating property (properties) can be used, and are especially free of SF6Gas
Body.In addition it is possible to use the compressed gas of the pressure with about several bars.
More specifically, the second connector 470 can be insulation compartment, wherein being disposed with for by the first valve unit 410
Lower unit 431 is connected to the busbar element 471 of the lower unit 451 of third valve unit 430.Other connectors and specific
Ground busbar element can be located in insulation compartment, such as the lower unit of the second valve unit 420 to be connected to the 4th valve
The busbar element that the label of the lower unit of unit 440 is.The compartment 470 that insulate forms the base portion of valve gear, valve unit
The receptacle of 410-450 is in valve gear base portion.
Device 440 shown in Fig. 4 can be a part at converter station (or valve station), and can specifically indicate this
One arm of converter station.Then, valve station may include arrangement as three, i.e. three-phase.For each phase, the number of valve unit
Mesh (i.e. the number of container or cylinder tank) can be different, this depends on nominal system voltage and in a tank includes how many
Unit.
Fig. 5 shows the valve gear 500 equivalent with the valve gear 400 with reference to Fig. 4 description, in addition to the second connector can wait
It is same as the first connector rather than cabinet (or compartment filled with insulating gas).Specifically, the lower part that the first valve unit 510 stacks
It is single that unit 514 can be connected to the lower part that another valve unit 530 stacks by the busbar element 571 being located in pipeline 573
Member 551, pipeline 573 is at least partially filled with insulating gas 575.
Insulating gas 575 can be such as SF6、N2, air, dry air or these gases mixture.However, should
Understand, the present disclosure is not limited to these examples, and other gases with similar insulating property (properties) can be used, and are especially free of
SF6Gas.In addition it is possible to use the compressed gas of the pressure with about several bars.
It, can be with Fig. 5 with reference to Fig. 4 every other feature described other than the difference of the type of above-mentioned second connector
Shown in configuration combination to form other embodiments.
Specifically, Fig. 5 shows the arrangement for the five valve units 510,520,530,540 and 550 being electrically connected in series.So
And applied according to expectation, the valve unit that any other number can be used carrys out component valve gear.
In the embodiment shown in fig. 5, valve unit is arranged side by side.It is every in valve unit 510,520,530,540 and 550
One includes container, wherein being disposed at least one converter unit stacks 550 (as the valve unit institute indicated by 510
Show).Each of valve unit can form larger converter (the series connection shape of its multiple stack of cells for passing through valve unit
At) at least part.The container of valve unit can be at least partially filled with electrical isolation gas 515.In addition to above-mentioned about
Except the difference of two connectors 570, what each of valve unit 510,520,530,540 and 550 can be described with reference Fig. 1
Valve unit 100 is equivalent with reference to valve unit 410,420,430,440 and 450 of Fig. 4 description.
Specifically, the first connector 560 including the first busbar element 561 can correspond to the with reference to Fig. 4 description
A connector 460, the first busbar element 561 will be located at 521 electricity of unit of one end (specifically top) of the first valve unit 510
It is connected to another unit 541 positioned at one end (specifically top) of the second valve unit 520.First connector 560 is exhausted by electricity
Edge gas 565 insulate.Valve gear 500 can also include the connector of the first kind, that is, be similar to the first connector 561, be used for
4th valve unit 540 is connected to the 5th valve unit 550.
For valve gear 400 shown in Fig. 4, each of third valve unit 530 and the 5th valve unit 550 can be equipped with
There is plug-in cable terminal 582,584, for being connected to electrical system (or external bus).Plug-in cable terminal
(or any other gas-insulated busbar) can be used for for valve gear being connected to transformer or DC Electrode in Gas Insulated System.Such as Fig. 5
Shown, valve gear 500 includes the insertion for the element stack for the third valve unit for being labeled as 530 to be connected to AC transmission line
Formula cable terminal 582.In addition, valve gear 500 includes for the element stack for the 5th valve unit for being labeled as 550 to be connected to directly
Flow the plug-in cable terminal 584 of transmission line.Plug-in cable terminal 582,584 can be designed as the electricity via some type
Cable is connected to another valve unit or electrical system.
In addition, the container of valve unit can be sealed by spacer element 514,516, spacer element 514,516 can be equal
In the spacer element 414,416 of reference Fig. 4 description.
Valve gear 500 may, for example, be the converter of converter station (or its at least part), and can be used for by into
Enter AC power and is converted into output DC power.
Fig. 6 is shown with five valve units 610,620,630,640 and 650 adjacent to each other on compartment or cabinet 670
Valve gear.Compared with reference Fig. 4 described embodiment, in the embodiment based on configuration shown in fig. 6, for connecting two
The lower unit of a adjacent valve unit busbar element (such as, the valve unit labeled as 610 and 630 and be labeled as 620 Hes
640 valve unit) it is embedded into insulating materials, rather than be isolated by insulating gas.The insulating materials of compartment 670 can be ring
Oxygen resin.
Fig. 6 shows the valve gear 600 being equal to reference to Fig. 4 valve gear 400 described, in addition to the second connector includes tool
There is the compartment of solid insulating material, wherein busbar element 671 is for the lower unit that the first valve unit 610 stacks to be connected to
The lower unit that third valve unit 630 stacks.
Fig. 6 is shown with five valve units 610,620,630,640 and 650 adjacent to each other on compartment or cabinet 670
Valve gear.Compared with the embodiment of reference Fig. 4 description, in the embodiment based on configuration shown in fig. 6, for connecting two
The busbar element of the lower unit of adjacent valve unit (valve unit such as labeled as 610 and 630 and is labeled as 620 and 640
Valve unit) be embedded into insulating materials, rather than pass through insulating gas be isolated.The insulating materials of compartment 670 can be epoxy
Resin.
In valve gear 600 shown in Fig. 6, the first valve unit 610 include for by its container and adjacent valve unit 420 and
The spacer element of 430 container separation.Spacer element includes insulating materials, and can for example be disposed in the first valve unit
Joint between one end of 610 container and the first connector 660, the first connector 660 is by the unit of the first valve unit 610
Stack the element stack for being connected to adjacent valve unit 620.First connector 660 can be equivalent to above with reference to Fig. 1 and Fig. 4 description
The first connector 160 and 460.However, the cabinet 670 including insulating materials is used as two adjacent valve units in the bottom end of container
Between spacer element, and necessarily additional spacer element.
Fig. 6 also shows valve gear and can be used to incite somebody to action equipped with a plug-in cable terminal, the plug-in cable terminal
One (being in this example the third valve unit labeled as 630) in valve unit is connected to AC transmission line, and can match
Another plug-in cable terminal is had for one (being in this example the 5th valve unit 650) in valve unit to be connected to
DC link.It should be appreciated that plug-in cable terminal can be located at the end (or opening) of the container of these valve units, or
Person is connected to the element stack (or the busbar element extended from element stack) of these valve units via busbar element.
Although describing feature and element above with specific combination, each feature or element can not have other
It is used alone in the case where feature and element or makes together with the various combinations with or without other features and element
With.Specifically, although example shown in Fig. 4 and Fig. 6 include five valve units, but it is to be understood that can be used it is any its
The valve unit of his number forms power converter station (or its at least part).In addition, to the first, second, third, fourth He
The reference of 5th valve unit can be exchanged, such as third valve unit is considered as the first valve unit, and vice versa.
In addition, by attached drawing, open and appended claims research, those skilled in the art are claimed in practice
The present invention when be understood that and realize other variants of the disclosed embodiments.In the following claims, word " comprising "
Be not excluded for other elements or step, and indefinite article "a" or "an" be not excluded for it is multiple.In mutually different appurtenance
The fact that the certain measures stated in it is required that, is not offered as that the combination of these measures cannot be used to advantage.