Note: Descriptions are shown in the official language in which they were submitted.
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Description
System and method for switching high voltages
The invention relates to a system and a method for switching
high voltages with a switching path which comprises at least
two series-connected switching units. Each switching unit
comprises at least one support element and elements of a
kinematic chain for transferring a switching movement from at
least one drive.
Systems for switching high voltages, specifically for the
switching of voltages in the region of 70 kV to 1,200 kV,
comprise power switches. These incorporate contacts having
fixed and/or movable contact pieces, specifically rated current
contacts and arcing contacts, by means of which switching arcs
can be generated and extinguished. The interrupter units, i.e.
power switches, close or interrupt at least one current path,
specifically one current path per pole. Accordingly, current
generators and/or current consumers and/or sections of power
grids can be isolated from one another, or interconnected. A
three-pole system having at least three power switches,
specifically at least one power switch per pole, is e.g.
designed to switch three current paths, either individually,
sequentially or simultaneously, i.e. to execute the
interruption or closing thereof.
This can be necessary, specifically in the event of fault
currents in power grids, in case of equipment malfunctions, or
in conjunction with the switch-on or switch-of of electricity
generators and/or electricity consumers. Switching is executed
in a regulated or controlled manner, e.g. in accordance with
measured variables on the system and/or in accordance with
energy demand. Appropriate devices, including e.g. current and
voltage measuring devices, sensors for temperature, air
pressure or malfunctions can be incorporated in systems for the
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switching of high voltages, e.g. in order to permit a switching
operation to be controlled either decentrally or centrally,
specifically from a control center.
In order to permit the switching of high voltages, a switching
system can comprise a plurality of interrupter units per pole,
which are specifically electrically interconnected in series,
one after another. For example, a quadruple interrupter system
can comprise four series-connected interrupter units, arranged
one after another, by means of which e.g. a switching voltage
of 1,200 V can be reduced by a voltage of 300 V per interrupter
unit. A modular design, comprising a plurality of interrupter
units, permits a cost-effective adaptation of the system to the
requisite maximum switching capacity, the employment of
technically simple and cost-effectively producible interrupter
units with a low maximum switching capacity or voltage, and a
compact design. In the event of switching, series-connected
interrupter units must be switched synchronously, i.e.
essentially simultaneously.
During switching, the moveable contact pieces of a contact are
moved by means of elements in a kinematic chain, whereby the
contacts are opened or closed. A drive delivers the kinetic
energy required for the switching process. As a drive, e.g. a
stored-energy spring mechanism having at least one energy
storage spring and/or an electric motor can be employed. Hand
cranks and/or a motor can be used to deliver energy to an
energy storage spring, which is stored until the switching
instant. Multi-pole switches can comprise at least one drive
per pole, or can comprise a common drive for a plurality of
poles. A stored-energy spring drive comprises at least one
closing spring and at least one opening spring, or a common
spring for the opening and closing movement.
Elements of the kinematic chain transmit kinetic energy from
the drive to the moveable contact pieces of the electrical
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contacts upon switching. Gearing elements, including e.g.
shafts and levers, can be incorporated in order to vary the
direction of motion and the force which is transmitted to the
moveable contact pieces e.g. via a drive rod. For rapid
switching, specifically within the range of milliseconds, large
forces and rapid movements are required. Synchronous switching
requires synchronism, i.e. the simultaneous switching of all
the respective series-connected interrupter units. Standards
stipulate a maximum temporal deviation, i.e. synchronous
operation in a switch-on process, which lies within one sixth
of an oscillation cycle of the oscillating voltage applied to
the system. In a switch-off process, standards stipulate the
synchronous operation of all the interrupter units, within one
eighth of an oscillation cycle of the oscillating voltage
applied to the system.
In the event of a periodically recurrent oscillation,
specifically sinusoidal oscillation, at a frequency of 50 or 60
Hz, the closing of all the series-connected interrupter units
must therefore be executed within one three hundredth of a
second at 50 Hz, or one three hundred and sixtieth of a second
at 60 Hz, and the opening of all the series-connected
interrupter units must be executed within one four hundredth of
a second at 50 Hz, or one four hundred and eightieth of a
second at 60 Hz. In order to achieve this, in the event of the
employment of a plurality of drives, specifically one drive per
interrupter unit or per pair of interrupter units, e.g. in the
event of four series-connected interrupter units, the drives
are electrically synchronized.
The interrupter units are arranged on supports or support
elements. Support elements comprise e.g. insulators of ceramic
and/or silicon construction, which are specifically mounted on
metal supports, e.g. of steel or aluminum construction, and
arranged on a foundation. The support elements can be
configured in the form of a column, and arranged
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perpendicularly to the plane of the foundation. For reasons of
stability, two interrupter units can be respectively combined
in a switching unit or interrupter head, arranged symmetrically
on a support. The interrupter units can be arranged one after
another in the longitudinal axis thereof, in an electrical
series-connected arrangement, and secured in a mechanically
stable manner at the upper end of a support element, i.e. the
end thereof which is averted from the foundation. A support and
the switching unit mounted thereupon thus assume e.g. a T-
shape, wherein the longitudinal axis of the switching unit is
specifically oriented essentially in parallel with the
foundation.
One pole of a quadruple interrupter arrangement comprises e.g.
two support elements, each with an interrupter head mounted
thereupon. The interrupter heads are arranged relative to one
another such that their longitudinal axes are arranged on a
common longitudinal axis, and all four interrupter units are
interconnected in series. Each support element and interrupter
head combination comprises a drive and elements of a kinematic
chain, for the transmission of a switching movement from the
drive to the respective interrupter head. Synchronous switching
requires the electrical synchronization of specifically two
drives, in order to offset differences in the drives, kinematic
chains and interrupter units, such that the synchronism of
switching is ensured. The adjustment of electrical
synchronization is complex, time-consuming and cost-intensive.
The object of the present invention is the elimination or
reduction of the above-mentioned problems. Specifically, the
object thereof is the disclosure of a system and a method for
switching high voltages, which simply and cost-effectively
permit the synchronous operation or synchronization of
interrupter units during switching.
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According to the invention, the above-mentioned object is
fulfilled by a system for switching high voltages and/or by a
method for the switching of the above-mentioned system.
Advantageous configurations of the system according to the
invention for the switching of high voltages and/or of the method
for switching the above-mentioned system are also disclosed.
A system according to the invention for switching high voltages
comprises a switching path having at least two series-connected
switching units, wherein each switching unit comprises at least
one support element and elements of a kinematic chain for
transferring a switching movement from at least one drive. The
support elements of the at least two switching units are
mechanically interconnected by means of at least one coupling
element.
The coupling element permits the mechanical connection of the at
least two series-connected switching units. Mechanical
adjustment of the synchronization or synchronous operation of
the switching units is possible, specifically by the variation
of the distance between the at least one drive and at least one
switching unit, via elements in the kinematic chain, which are
arranged on or in the coupling element and/or support element.
In comparison with electrical synchronization, this arrangement
saves costs, reduces complexity and saves time. The coupling
element additionally delivers a mechanical stabilization of the
support elements, wherein these are mutually braced by means of
the at least one support element. A high degree of mechanical
stability is required, specifically in the event of an earthquake
hazard and/or other climatic influences, such as e.g. storms.
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Each switching unit can comprise at least two interrupter units
in the form of a power switch, specifically having electrical
resistance and/or capacitor units. A quadruple interrupter
system can thus be simply produced by the employment of two
switching units, each arranged on a support element, each
comprising two interrupter units and, specifically, further
electrical units, including e.g. resistance and/or capacitor
units. The two support elements are mechanically connected by
means of the coupling element, and the switching units
associated with the support elements can be synchronized, for
switching purposes, using the coupling element. Thus,
specifically by the use of four power switches, resistance
and/or capacitor units, wherein the power switches are series-
connected, a high voltage can be switched in a simple and cost-
effective manner.
The at least one coupling element can comprise at least one
support, specifically a transverse support, which interconnects
the support elements of the at least two switching units. A
transverse support, by means of its orientation, can offset
differences in height, e.g. between the support elements of the
switching units, in a simple and cost-effective manner, such
that the distance between the at least one drive and the
switching units or interrupter units is equal, thus ensuring
the achievement of a specified minimum synchronism.
The support elements of the at least two switching units can be
arranged perpendicularly to a foundation, specifically in a
mutually parallel arrangement, with the switching units
respectively arranged on the support elements, at one end of
said support elements, on the side thereof which is averted
from the foundation. In a lower region of the support elements,
the at least one coupling element can be arranged, specifically
parallel to the foundation. This arrangement is mechanically
stable, as a result of the reinforcement provided by the
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coupling element. As described above, by the configuration of
the coupling element in a parallel arrangement to the
foundation, differences in height, e.g. between the support
elements of the switching units, can be offset.
The drive of the at least two switching units can be configured
as a common drive, which is specifically arranged on at least
one coupling element. The drive can be arranged centrally
between the at least two switching units and/or the center
lines of the support elements. By means of this central
arrangement between the two switching units on the coupling
element, the distance between the drive and the switching units
is equal, i.e. good mechanical synchronization of the switching
of the two switching units is possible. The arrangement can be
configured with mirror symmetry, with an axis of reflection
oriented perpendicularly through the central drive. Identical
elements of the kinematic chain on both switching units permit
a high degree of synchronism, i.e. the simultaneous switching
of the switching units with a low maximum difference in the
switching instant. The drive can be e.g. a stored-energy spring
drive, specifically having closing and opening springs.
Accordingly, using simple means, a cost-effective switching
system can be achieved, having a high degree of synchronism.
The at least two switching units can be arranged one after
another along a common longitudinal axis, wherein specifically
at least four interrupter units are arranged one after another
along the common longitudinal axis, and are specifically
electrically connected in series. Specifically, the
longitudinal axis can essentially be parallel to the
foundation. The support element of a respective switching unit
can be arranged centrally to the switching unit, specifically
with an equal number of interrupter units to either side of the
support element of the respective switching unit. By means of
the design of the arrangement according to the invention thus
described, two T-shaped switching units with respective support
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elements are constituted, wherein the switching units are
arranged along one axis, thus permitting the simple
interconnection thereof in series.
Height differences in the foundation can be compensated e.g. by
means of support elements of different lengths, and synchronism
can be ensured by the arrangement of the coupling element e.g.
at right angles to the support elements. Alternatively, the
support elements can be of equal length, whereby a high degree
of synchronism is achieved by the arrangement of the coupling
element parallel to the plane of the foundation. The coupling
element mechanically stabilizes the support elements, and
permits the arrangement of a specifically centrally-arranged
drive with an equal distance to the two switching units.
Alternatively, a plurality of drives, e.g. two, can be
employed, which are secured to the coupling element such that
an equal distance of the drives to the two switching units, via
elements of the kinematic chain, is provided. Differences in
the elements of the kinematic chains of both drives can also be
compensated by an offset in the drives to achieve an
arrangement wherein an equal distance to the drives of both
switching units is provided. Synchronism can be achieved by the
displacement of one drive, or by the mutual displacement of
both drives along the coupling element. Synchronism can also be
achieved by the tilting of the coupling element in relation to
the support elements, as a result of which differences in the
travel of the kinematic chain can be compensated.
The system can be a quadruple interrupter system, in the form
of a power switch, having four series-connected interrupter
units, specifically arranged along a common longitudinal axis,
wherein two interrupter units are respectively arranged on a
support element, and the support elements, by means of at least
one coupling element wherein, specifically, the longitudinal
axis of the coupling element is essentially arranged parallel
to the common longitudinal axis of the interrupter units, are
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mechanically interconnected, in the manner of a web.
Specifically, a common drive of the interrupter units can be
arranged on the coupling element, e.g. centrally on the
coupling element. The design thus described permits the
switching of high voltages, specifically up to 1,200 V, e.g.
using standard power switches for lower voltages, with lower
costs and with a high degree of synchronism. Synchronism is
achieved mechanically by means of the employment of the
coupling element, e.g. by the variation of the position of the
drive on the coupling element, and thus of the distance, via
elements of the kinematic chain, between the drive and the
interrupter units.
Elements of the kinematic chain can be incorporated in the
system according to the invention, for the transmission of the
switching movement of the at least one drive to the interrupter
units of the at least two switching units. The elements of the
kinematic chain can be arranged on or in the coupling element
and/or on or in the support elements, and the movement
generated by the drive can be transmitted to the interrupter
units as a switching movement. By varying the position and/or
the shape of the coupling element relative to the support
elements and/or to the drive, the displacement or the length of
displacement executed via elements of the kinematic chain on or
in the support elements and/or on or in the coupling element is
commonly determined and/or set, by means of which greater
synchronism in the switching movement and in the switching
instant can be achieved.
The support elements of the at least two switching units can
comprise insulators, specifically insulators of silicon,
composite material and/or ceramic construction. The support
elements of the at least two switching units can comprise metal
supports, specifically of aluminum and/or steel construction.
The support elements can be constituted of insulator elements
and/or metal support elements, e.g. a support element can be of
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a column-shaped design, with an upper region comprised of an
insulating material, specifically a ribbed cylindrical
insulator, and a lower region comprised of a metal support,
specifically a cylindrical and/or T-shaped metal support. The
metal support can also be configured as a metal frame, and/or
e.g. the insulators, as support elements, can specifically be
configured as insulator columns, arranged perpendicularly on
the metal frame. The switching units can be arranged on the
insulator columns, and elements of the kinematic chain can be
moveably arranged on or in the coupling element, the insulator
columns and/or the metal frame. A drive can be arranged on the
coupling element, wherein the coupling element can form part of
the metal frame.
An electrically-insulating fluid can be incorporated,
specifically a liquid and/or a gas, specifically SF6, nitrogen,
dry air, carbon dioxide, a fluoroketone and/or a fluoronitrile.
The at least one insulator and/or the interrupter units can be
filled with the electrically-insulating fluid, specifically a
liquid and/or a gas, specifically SF6, nitrogen, dry air,
carbon dioxide, a fluoroketone and/or a fluoronitrile.
The distance via the elements of the kinematic chain from the
drive to the at least two, and specifically to all the
interrupter units can be equal, specifically with a
respectively equal number of elements and identically-
configured elements in the kinematic chain from the drive to
each interrupter unit, specifically with a common drive for all
the interrupter units arranged centrally between the at least
two switching units and arranged on the coupling element.
Accordingly, by simple means, a high degree of synchronism is
mechanically achievable in a cost-effective manner.
Support elements, as described above, can be of different
lengths, specifically for the compensation of variations in the
height of the foundation, and/or the at least one coupling
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element can be arranged on the support elements such that the
distance from the drive to the switching units, via elements of
the kinematic chain, is of equal length, specifically, in the
event of differences in the height of the foundation, with
distances of equal length from the switching units to the
fixing points of the at least one coupling element on the
switching units. Accordingly, again by simple means, a high
degree of synchronism is mechanically achievable in a cost-
effective manner. By means of the position of the coupling
element and the drive relative to the switching units,
synchronism can be achieved, and can easily be re-adjusted. The
employment of a common drive for the at least two, specifically
for all the switching units is possible, thereby reducing both
costs and complexity.
A method according to the invention for switching the above-
mentioned system is provided wherein, upon the tripping of a
switching process, kinetic energy is delivered by exactly one
drive, specifically a stored-energy spring drive, and the
kinetic energy is transmitted via elements of the kinematic
chain to at least two switching units, specifically to four
interrupter units, specifically in the manner of a power
switch. The two switching units and/or four interrupter units
are electrically connected in series, and each switching unit
is mounted on a support element. The at least two support
elements are connected by means of a common coupling element,
and kinetic energy is transmitted via elements of the kinematic
chain, arranged in or on the support elements and/or the
coupling element.
In a closing process, synchronism on all the interrupter units
can be achieved within one sixth of an oscillation cycle of an
oscillating voltage applied to the system, specifically in the
case of a periodically recurring oscillation, specifically a
sinusoidal oscillation, at a frequency of 50 or 60 Hz.
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In an opening process, synchronism on all the interrupter units
can be achieved within one eighth of an oscillation cycle of an
oscillating voltage applied to the system, specifically in the
case of a periodically recurring oscillation, specifically a
sinusoidal oscillation, at a frequency of 50 or 60 Hz.
According to one aspect of the present invention, there is
provided a system for switching high voltages with a switching
path which comprises at least two series-connected switching
units, wherein each switching unit comprises at least one support
element and elements of a kinematic chain for transferring a
switching movement from at least one drive, wherein the support
elements of the at least two switching units are mechanically
interconnected by means of at least one coupling element, and
the drive of the at least two switching units is designed as a
common drive, wherein the support elements are of different
lengths to compensate for variations in the height of a
foundation, and wherein the at least one coupling element is
arranged on the support elements such that the distance from the
drive to the switching units, via elements of the kinematic
chain, is of equal length, in the event of differences in the
height of the foundation, with distances of equal length from
the switching units to the fixing points of the at least one
coupling element on the switching units.
According to another aspect of the present invention, there is
provided a method for switching a system as described herein,
wherein upon the tripping of a switching process, kinetic energy
is delivered by exactly one drive, and the kinetic energy is
transmitted via elements of the kinematic chain to at least two
switching units, and wherein the two switching units are
electrically connected in series, and each switching unit is
mounted on a support element, and wherein the at least two
support elements are connected by means of a common coupling
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element, and kinetic energy is transmitted via elements of the
kinematic chain, arranged in or on the support elements and the
coupling element.
Systems for switching high voltages according to the prior art
and an exemplary embodiment of the invention are schematically
represented in figures 1 and 2, and are described in greater
detail hereinafter.
In the figures:
Figure 1 shows a schematic side view of a quadruple interrupter
system 1 for the switching of high voltages according
to the prior art, with two separate and electrically
synchronized drives 8, and
Figure 2 shows a schematic side view of a quadruple
interrupter system 1 according to the invention for
the switching of high voltages, with a common drive 8
arranged on a
coupling element 10.
Figure 1 represents a schematic side view of a quadruple
interrupter system 1 for the switching of high voltages,
according to the prior art. The system 1 has a switching path,
which comprises two series-connected switching units 2, 3, each
having two series-connected interrupter units 6. The switching
units 2, 3, with the interrupter units 6, are respectively
configured in the form of an interrupter head, which is
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respectively arranged on a support element 4, 5. The two
interrupter units 6 of a switching unit 2, 3 are spatially
arranged one after the other, on their longitudinal axis, along
a common axis 12, and are interconnected by means of a coupling
flange 14. In the region of the coupling flange 14, or above
the coupling flange 14, the interrupter units 6 are secured to
the respective support element 4, 5 of the switching unit 3, 4.
The two support elements 4, 5 of the two switching units 2, 3
are respectively configured in the form of a column. In the
exemplary embodiment shown in figure 1, the column is
constituted of various regions, e.g. of an insulator, which is
secured to the respective coupling flange 14 of the switching
unit 2, 3, and is arranged on a metal support. The metal
support is arranged in the lower region 11 of the column or the
support element 4, 5, and is configured e.g. in the shape of a
column and/or in a T-shape. The support elements 4, 5 are
arranged e.g. on a foundation and are specifically secured to
the latter, e.g. by means of bolts or by embedding in concrete.
Specifically, the support elements 4, 5 are essentially
perpendicular to the plane of the foundation.
The support elements 4, 5, in combination with the associated
switching unit 2, 3, respectively constitute a T-shape wherein,
to the right and left of the support element 4, 5 an
interrupter unit 6 of the respective interrupter head 2, 3 is
arranged. In the exemplary embodiment according to figure 1,
the foundation is flat and horizontal, wherein the support
elements 4, 5 are of equal height. The interrupter units 6 of
the two switching units 2, 3 are arranged one behind another,
with their respective longitudinal axis arranged on a common
longitudinal axis 12, and electrically interconnected in
series. At the start and end of the series circuit, i.e. at the
start and end of the four interrupter units 6 arranged one
behind another, the system 1 comprises electric terminals 9,
which electrically connect the system e.g. to the power grids,
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the current generators and/or the current consumers which are
to be switched.
On each support element 4, 5, a drive 8 is arranged, and is
specifically secured to the support element 4, 5 in the lower
region 11. The drive 8 is configured e.g. in the form of a
stored-energy spring drive, having a closing spring and an
opening spring, and/or in the form of an electric motor. Upon
switching, the drive 8 delivers the kinetic energy which is
required for the movement of the moveable contact pieces of the
interrupter units 6. Elements of a kinematic chain 7, e.g. in
the form of shafts, rods and/or gearing elements, are arranged
on or in the support element 4, 5 for the transmission of
kinetic energy from the drive 8 to the moveable contact pieces
of the interrupter units 6, i.e. for the transmission of the
switching movement upon switching. In the figures, the elements
of the kinematic chain 7 are represented schematically by
broken lines.
The two drives 8 of the two switching units 2, 3 are
electrically interconnected and electrically synchronized, in
order to permit the achievement of the synchronism of the
interrupter units 6 of the two switching units 2, 3 during
switching. Deviations or tolerances in manufacturing or
installation can result in different travel times for the
movement of the two switching units 2, 3, and their respective
support elements 4, 5, executed via the two kinematic chains 7.
For a closing operation, standards require the synchronism of
all interrupter units 6 with a deviation in the switching
instants of said interrupter units 6 which lies within one
sixth of an oscillation cycle of the oscillating voltage
applied to the system 1. In an opening process, standards
require synchronism, whereby all the interrupter units 6 are
switched with a deviation in the switching instants of said
interrupter units 6 which lies within one eighth of an
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oscillation cycle of the oscillating voltage applied to the
system 1.
Specifically in the case of a periodically recurring
oscillation, e.g. a sinusoidal oscillation at a frequency of 50
or 60 Hz, the maximum permissible deviation in the switching
instants of the interrupter units 6, i.e. the time to
synchronism, lies within the range of milliseconds. Electrical
synchronization of the two drives 8, which incorporates
differences in the kinematic chains 7, e.g. on the grounds of
manufacturing tolerances, thereby requiring the achievement of
synchronism, is both complex and expensive. For example,
complex test series may be required for each system 1.
Figure 2 represents a schematic side view of a quadruple
interrupter system 1 according to the invention for the
switching of high currents. The system 1 is analogous to the
system 1 according to figure 1, but with a coupling element 10
and a common drive 8 for all four interrupter units 6. The
coupling element 10 is configured in the form of a web, wherein
the respective ends thereof are specifically arranged on a
respective support element 4, 5 of the two switching units 2,
3. Attachment of the coupling element 10 to the support
elements 4, 5 can be executed e.g. by means of bolting,
welding, adhesive bonding or other connection technologies. The
common drive 8 is arranged centrally, i.e. at an equal distance
from the two support elements 4 and 5, and is secured to the
coupling element 10.
By the employment of one drive 8 for all four interrupter units
6, costs are saved in relation to the exemplary embodiment
according to figure 1, which incorporates two drives 8. Any
electrical synchronization of a plurality of drives 8 can be
omitted by the employment of a single drive 8 only, with a
resulting saving in time, complexity and costs. Synchronization
of the switching instants of the interrupter units 6 is
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executed mechanically by means of elements of the kinematic
chain 7 and/or by the arrangement of the drive 8 on the
coupling element 10, and/or of the coupling element 10 on the
support elements 4, 5. Differences in the kinematic chains 7 of
the first and second switching units 2, 3 can be compensated by
varying the position of the drive 8 on the coupling element
and/or of the coupling element 10 relative to the respective
switching unit 2,3, whereby the distance of the drive 8 from
the two switching units 2, 3, via elements of the kinematic
chain 7, is defined.
The coupling element 10, as represented in figure 2, can thus
be configured in a parallel arrangement to the foundation or,
in the event of differences between elements of the kinematic
chain 7 of the first switching unit 2 and elements of the
kinematic chain 7 of the second switching unit 3, differences
can be compensated by a tilted arrangement of the coupling unit
10, i.e. in a non-parallel arrangement to the base surface.
Differences in the height of the foundation and/or differences
in the length of the support elements 4, 5 can likewise be
compensated by the arrangement of the coupling element 10 on
the support elements 4, 5. Thus, e.g., the coupling element 10
can be arranged on the support elements 4, 5 such that
transmission paths of the same length are executed via the
kinematic chain 7 of the drive 8 to the first and second
switching units 2, 3.
The exemplary embodiments described above can be mutually
combined and/or can be combined with the prior art. Although
not represented in the figures, in the interests of simplicity,
e.g. the switching units 2, 3, specifically each interrupter
unit 6, can comprise electrical resistors, capacitors and/or
shielding. Elongated resistors and/or capacitors can be
configured in a spatially parallel arrangement to the
interrupter units 6 which, e.g., are configured in the form of
a power switch. The coupling element 10 can be of one-piece
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construction, e.g. of steel or aluminum, and/or can be
configured as a T-support, with elements of the kinematic chain
7 arranged on the support, or can be configured as a hollow
body, e.g. of quadratic or circular cross-section, with
elements of the kinematic chain 7 arranged in the support. By
the connection of the support elements 4, 5 via the coupling
element 10, mechanical stabilization of the system 1 can be
achieved which, in the event of e.g. environmental influences
such as wind or earthquake, produces a higher degree of
reliability in the system 1.
The system 1 can comprise more than two switching units 2, 3,
each with a support element 10, such that at least two support
elements 10 are provided, and specifically all the support
elements 10 are connected via the coupling element 10. A
plurality of support elements 10 can also be provided. A
switching unit 2, 3 can comprise one, two or more interrupter
units 10. Thus, per switching unit 2, 3, as represented in the
figures, two interrupter units can be configured in a mutually
linear arrangement, or e.g. three interrupter units can be
provided per switching unit 2, 3 in a Y-shaped configuration.
CA 03036421 2019-03-11
PCT/EP2017/072191 - 18 -
2016P17812WOIN
List of reference numbers
1 System for switching high voltages
2 First switching unit
3 Second switching unit
4 Support element of first switching unit
Support element of second switching unit
6 Interrupter unit
7 Elements of the kinematic chain
8 Drive
9 Electric terminals
Coupling element
11 Lower region of support elements
12 Common longitudinal axis of interrupter units
13 Longitudinal axis of coupling elements
14 Coupling flange
