EP3788643A1 - Hochspannungsdurchführung - Google Patents
HochspannungsdurchführungInfo
- Publication number
- EP3788643A1 EP3788643A1 EP19729687.4A EP19729687A EP3788643A1 EP 3788643 A1 EP3788643 A1 EP 3788643A1 EP 19729687 A EP19729687 A EP 19729687A EP 3788643 A1 EP3788643 A1 EP 3788643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage bushing
- switching
- voltage
- bushing
- drive unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/005—Insulators structurally associated with built-in electrical equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Definitions
- the invention relates to a high-voltage bushing for an electrical device that can be filled with a fluid, the high-voltage bushing having a current conductor and the current conductor being surrounded by an insulating body, the insulating body being part of an insulating arrangement.
- the high-voltage bushing is also referred to as a bushing.
- the bushing is used to guide a live conductor through an opening in a grounded wall.
- This wall is mostly represented by the housing of an electrical device. Examples are transformers,
- High-voltage bushing includes in particular
- Devices with such high-voltage bushings are basically known, especially devices such as
- the insulating body surrounds the conductor that is the high-voltage bushing
- the length of the insulating body is determined by the striking distances and creepage distances. In addition to the tension, these are also of the respective
- the implementation is preferably carried out without control.
- a capacitive field control is mostly used to keep the required diameters small.
- metallic foils alternating with one Insulating medium (e.g. paper, foil) wound up and impregnated with oil or epoxy resin after drying.
- Insulating medium e.g. paper, foil
- Mains section must be reliably separated from the source of the error, otherwise the high short-circuit currents will damage the electrical device or the mains section.
- the task is to run the current path through a
- a high-voltage bushing of the type mentioned at the outset is made available, the current conductor having at least one interruption in which the switching unit for interrupting the current path is arranged.
- the switching unit can be interrupted directly in the high-voltage bushing
- the switching unit is implemented directly in the high-voltage bushing.
- a multifunctional component is therefore provided for the device, the multifunctional Component has the high-voltage bushing and the switching unit at the same time.
- the wiring of the device is thus simplified because an external cable feed for a switching signal can be omitted.
- the switch unit can be replaced together with the high-voltage bushing, which simplifies maintenance.
- the switching unit is preferably mechanically actuated and gas-tight encapsulated.
- the internal insulation of the space surrounding the switching contacts within the switching unit can be implemented, for example, by a vacuum or an insulating gas.
- Preferred embodiments of the invention provide that the switching unit is formed by one or more vacuum switching tubes. This technology has been sufficiently researched and enables simple, reliable design of the switching unit.
- High voltage bushing are arranged. This enables a particularly simple and compact design.
- the vacuum interrupters are not above the contours of the
- the contours of the bushing envelop the switching elements.
- the contours can be cylindrical, for example
- High-voltage bushing on a drive unit for actuating the switching unit.
- the drive unit is preferably within the contours of the high-voltage bushing
- the drive unit can be compactly integrated into the high-voltage bushing.
- the drive unit is in preferred embodiments not beyond the contours of the high-voltage bushing, but rather the contours of the high-voltage bushing also envelop them. It is preferred that a separate drive unit is provided for each switching unit. It is particularly preferred that the
- High voltage bushing is positioned.
- the housing forming a waveguide preferably forms the latter
- Waveguide represents an electrical shield or electrode of the high-voltage bushing.
- the interior preferably contains components of the drive unit
- the drive unit for actuating the switching unit and / or the switching unit are / are at least partially arranged within the waveguide. It is particularly preferred that a control and / or control unit of the switching unit is arranged within the waveguide of the high-voltage bushing. So a very compact design of the
- two opposite ends of the current conductor are designed as closed conductors and the opposite ends are connected to one another by a waveguide section. So an encapsulation of the
- the drive unit for actuating the switching unit is preferably arranged within the waveguide. This enables a particularly compact design.
- the drive unit can thus be protected against external influences.
- Monitoring unit can particularly preferably in the
- the control unit is preferably with at least one
- Sensor connected particularly preferably evaluates the measurement signals received by this sensor and monitors again preferably whether a so-called switching criterion is met.
- This switching criterion preferably a
- Switch-off criterion can be a complex multi-stage
- control unit preferably generates a switching signal, which is preferably transmitted to the drive unit for the switching unit of the high-voltage bushing, and thus a
- the switching unit and / or the drive unit are less
- High-voltage bushing placed, preferably in the axially removed from a mounting flange of the bushing
- This shift rod is preferably at least partially electrically conductive. It is particularly preferred that the switching rod is a part of the current path through the
- the mounting flange is preferably arranged axially in the area of the shift rod and faces both Switch unit and the drive unit on an axial distance which is at least the diameter of the
- Insulating body of the high-voltage bushing is particularly preferably an additional electrical insulation between the switching rod forming the current path and the
- the additional electrical insulation is preferably represented by additional insulating cylinders or a capacitive field control.
- the shift rod is preferably set up to move the mechanical shifting movement from the drive unit
- Transfer switching unit and is preferably formed from a conductor material and dimensioned such that it forms the current conductor of the bushing in the area between the drive unit and the switching unit.
- the shift rod preferably has a lower one
- Mounting flange of the bushing is used because there is a high mounting flange in the area of the ground potential
- insulating cylinders are preferred
- the space which is freed up is preferably used for placing a stepped capacitive field control by means of metallic control linings.
- Switching rod in the connection area to the drive unit an insulating section for decoupling from the drive. This allows the shift rod to be better decoupled from the drive.
- a switching unit at least partially includes the insulating cylinder.
- the insulating cylinder Preferably the
- Insulating cylinder concentric to the inside diameter of the
- Mounting flange of the high-voltage bushing is arranged. It is particularly preferred that the insulating cylinder is axially aligned with the mounting flange of the bushing.
- the drive unit has a housing.
- the housing of the drive unit preferably provides part of the current conductor of the high-voltage bushing. This means that preferably the housing
- the housing of the drive unit and / or a housing of a control and control unit of the switching unit is preferably designed to be electrically conductive and forms a current conductor which runs part of the current path through the
- the housing can thus take on a double function and enable a compact construction of the device.
- the drive unit can be encapsulated in the housing. In special embodiments, the
- Working voltage is comparatively low to the voltage of the conductor of the high-voltage bushing.
- the housing is rounded for this purpose.
- Electrodes or shields in particular at high operating voltages, in order to ensure large radii which are advantageous in terms of high voltage technology
- Embodiment of the invention integrates at least one drive unit into the electrode forming the axial end region of the high-voltage bushing.
- the housing of the drive unit is designed as a waveguide rounded in its end region and forms the electrode or
- the housing of the drive unit forming the waveguide is rounded at its end pointing towards the axial end, that is to say towards the electrical connection.
- the radius is preferably selected such that the field strength drops to such an extent that no additional shielding electrodes are necessary.
- the design of the switching unit is selected according to the respective switching requirements.
- the switching unit can include a disconnector, earthing switch, load switch or circuit breaker.
- Some embodiments provide two or more interruptions, in each of which a switching unit is arranged in order to selectively interrupt the current path. It is preferred that the high-voltage bushing has several switching units
- High-voltage bushings have two switching units, which are arranged in series with one another on the current path. By connecting several switching units in series in some embodiments, e.g. B. achieve a higher switching voltage.
- the increase in the dielectric strength of the vacuum is not proportional to the increasing contact distance.
- Switch units preferably come different
- So disconnectors can then be combined with circuit breakers or circuit breakers, for example.
- Disconnectors are used to manufacture a safe
- the switching unit is connected to a display device via optical fibers.
- Load switches are used to switch electrical equipment on and off in the undisturbed state. Load switches are able to switch the operating and certain overcurrents, but cannot control short-circuit currents.
- circuit breakers The task of circuit breakers is to safely interrupt operating and short-circuit currents and to isolate the over the separate switch contacts
- Circuit breakers can therefore not only switch operating currents and low overload currents, but also the high ones that occur in the event of faults
- the switching unit of the high-voltage bushing is connected to an energy store and this energy store is arranged within the contours of the high-voltage bushing. In this way a high switching speed can also be achieved with a low power of the drive unit.
- the bushing is preferably provided with one or more spring accumulators.
- the spring mechanism can be any suitable spring accumulators.
- Some embodiments provide that the spring accumulator is arranged within a waveguide of the high-voltage bushing.
- the spring accumulator is preferably formed from an electrically non-conductive material. So the material is
- an insulator e.g. B. a fiber reinforced
- Components of the high-voltage bushing are coaxially surrounded.
- the drive unit is mechanically coupled to a spring accumulator, which has an insulating material or consists of an insulating material, and this spring accumulator is within the
- the spring accumulator can be located radially between an inner wall of the waveguide and another component of the
- High-voltage bushing can be arranged in the interior.
- the spring accumulator is an energy accumulator, which is arranged for a force between components of the To transmit high-voltage bushing, preferably a force from the drive unit to the switching unit
- the high-voltage bushing is set up to unlock the spring-loaded device when the switch-on signal is applied and to trigger the switching process.
- the spring mechanism can then be loaded again.
- Vacuum interrupter switched off when the "hold" signal is removed or when the control voltage and the
- the high-voltage bushing has a measuring arrangement with devices for measuring the current and / or the voltage, which is preferably arranged inside the bushing body. So it can
- Measurement arrangement can be provided.
- Embodiments provide that within the waveguide of the high-voltage bushing a control and / or
- Control unit for controlling the switching unit is arranged, which is electrically shielded by the waveguide.
- the control unit and / or the control unit can be encapsulated in the interior of the waveguide.
- the electrical shielding by the waveguide can allow the control unit and / or the control unit to operate without interference or at least with less interference.
- control and / or control unit can also be installed compactly in the high-voltage bushing in this way. Supply lines from external control and / or control units can be omitted, which simplifies the construction of the device.
- Semiconductor arrangements are formed, which are set up to respond to a magnetic and / or an electrostatic field of the high-voltage bushing. Measuring devices can thus be provided integrated in the high-voltage bushing in order to be able to measure through the
- High-voltage bushing to measure current flow or an applied voltage. Measurements on magnetic and / or electrostatic fields can be particularly suitable for this. Semiconductor devices have been tried and tested for this purpose and allow a simple construction of the
- Has device for measuring the current This can provide measurement data about the current particularly reliably.
- the measurement arrangement is preferably designed to be fiber-optic in order to transport a measurement signal coming from the measurement arrangement.
- the measuring arrangement via the signal line with the control unit and / or the drive unit of the
- Measuring arrangement and the drive unit or the control unit signals are transmitted, for. B. measurement signals. Is the
- the signal line is a fiber-optic signal line, particularly low-interference signal transport is made possible, which is largely unaffected by electrical or magnetic interference fields.
- the high-voltage bushing is set up to feed measured values obtained from the measurement signal to a further comparative protective device. In this way, the measured values can be used for more than one purpose.
- Protective device is a differential protection.
- the further comparative protective device is preferably arranged via a signal transmission cable with the control and drive unit of the high-voltage bushing
- Switching unit e.g. B. vacuum interrupter connected.
- Hall generator is formed as a magnetic field-dependent semiconductor arrangement. Hall generators are relatively simple
- thermogenerator Auxiliary voltage source of the measuring arrangement before a thermogenerator.
- a thermal generator allows energy to be obtained from temperature differences. Since the devices mentioned frequently
- thermal generators can be self-sufficient without additional energy supply, only by means of the temperature difference
- the auxiliary voltage source is preferably with the
- Component formed which is dimensioned to be arranged within the high-voltage bushing.
- Auxiliary voltage source to be exchanged together with the semiconductor arrangement For example, two particularly well-coordinated components can be selected and formed in the common component. The order
- the construction can simplify the device. Are preferred.
- the common component preferably comprises an amplifier for the control signal.
- an optical waveguide is provided, which is between a
- Power supply unit e.g. B. a laser, and an opto-electronic energy converter.
- Optical waveguide transmits light fed in from the power feed unit to the opto-electronic energy converter, which partly converts the light energy into electrical energy
- Energy is stored in an electrical store that is connected to the opto
- Electrical storage e.g. B. a compensator or an accumulator, provides the necessary drive energy for the drive unit.
- the drive unit is on
- Spring storage drive is the electrical storage with one
- the drive unit has a plug
- the other element can be a connecting conductor, which is preferably hollow, inside the high-voltage bushing, which is the
- High-voltage bushing preferably passes axially.
- the housing is
- the connection lug preferably forms an electrical connection of the high-voltage bushing. This allows the drive unit to be arranged in the edge position and thus easily accessible at the axial end of the high-voltage bushing. This can make it easier to replace the drive unit. It is preferred that the drive unit, in particular the housing of the drive unit, is formed in one piece with the connecting lug. The connection lug can be made in one piece with the housing of the drive unit. This enables good conductivity.
- Drive unit forms part of an axial current path of the high-voltage bushing and is electrically conductive at one axial end via a shift linkage with a
- Movable contact of the switching unit is connected and on an opposite side with a connection to
- the drive unit thus serves both the power transmission and, by means of
- shift linkage has one as electrical
- a spring accumulator made of an insulating material encloses the actuating rod. Then the spring accumulator preferably forms part of the
- the high-voltage bushing usually has one
- the mounting flange for attaching the high-voltage bushing to the device.
- the mounting flange preferably surrounds the insulating body in a radially annular manner. It is preferred that the insulation is reinforced in the area of the mounting flange
- Main insulating body a second insulating body is arranged.
- a current transformer is mounted directly on the insulator.
- the insulating body then serves not only for insulation, but also as a carrier for the current transformer and thus has a double function. This simplifies the construction of the high-voltage bushing.
- the drive energy is transmitted by electromagnetic radiation.
- This is preferably transmitted by means of dielectric waveguides. It is therefore preferred that the energy supply to the drive unit is potential-free by electromagnetic radiation, which is transmitted via dielectric waveguides.
- the transmission via optical waveguides, in which light is guided in fibers made of quartz glass or plastic, preferably a polymeric optical fiber, is sufficiently known, so that others
- the switching operation is preferably carried out via a
- Switching speed can also be achieved with a low power density of the potential-free energy supply.
- One or more spring accumulators are preferably used. These are preferably made of an insulating material.
- High voltage bushing manufactured.
- glass fiber-based optical fibers are preferred.
- the high-voltage bushing designed in this way thus forms
- an autonomously operating switching device particularly preferably an autonomously operating
- Figure 1 is a sectional view through a first embodiment of the invention
- Figure 2 is a sectional view through a second
- Figure 3 is a sectional view through a third
- Figure 4 is a sectional view through a fourth
- Figure 5 is a sectional view through a fifth
- Figure 6 is a sectional view through a sixth
- Figure 7 is a sectional view through a seventh
- Figure 8 is a sectional view through an eighth embodiment of the invention.
- Figure 9 is a sectional view through a ninth
- Figure 10 is a detailed view of a sectional view through a tenth embodiment of the invention.
- Figure 1 is a sectional view through a
- High-voltage bushing 1 according to a first
- the high voltage bushing 1 is for use in a with a fluid, for. B. oil,
- the high-voltage bushing 1 has an insulating body 3.
- the current conductor 2 is surrounded by the insulating body 3, in this case by a bushing body 3
- Bushing body 3 coaxially surrounds the conductor 2.
- the bushing body 3 of the high-voltage bushing 1 thus simultaneously serves as an insulating body 3.
- the insulating body 3 is part of an insulating arrangement.
- the current conductor 2 has an interruption 4, in which a switching unit 5 is provided for interrupting a current path.
- the Current path runs through on current conductor 2
- High-voltage bushing 1 The switching unit 5 is formed by a vacuum interrupter.
- the vacuum interrupter is within the contours of the high-voltage bushing
- Insulating body 3 defined.
- the high-voltage bushing 1 shown in FIG. 1 according to the first embodiment of the invention has the advantage that the switching unit 5 is implemented in the high-voltage bushing 1 for the electrical device.
- the interruption can be done directly in the switch unit 5
- High-voltage bushing 1 take place. In the first
- Embodiment according to Figure 1 has the same
- High-voltage bushing 1 a drive unit 6 for
- the drive unit 6 is arranged within the contours of the high-voltage bushing 1. More specifically, the drive unit 6 is arranged inside the current conductor 2. The current conductor 2 is partially designed as a waveguide to provide an interior for the drive unit 6. The drive unit 6 has a housing 7. The housing 7 of the drive unit 6 represents part of the current conductor 2 of the high-voltage bushing 1.
- the encapsulated switching unit has an outer
- the ceramic body enables a reduction in the size of the bushing.
- the ceramic body enables a reduction in the size of the bushing.
- Vacuum interrupter so the switching unit 5, the insulation of the conductor 2 to a mounting flange 8 of
- the insulation in the area of the mounting flange is preferably reinforced, since here the
- Embodiment form the switching unit 5, here again the vacuum interrupter, and the drive unit 6 two spatially separate parts. According to the switching unit 5 and / or the drive unit 6 in less
- Shift rod 9 also called actuating rod 9, mechanically connected.
- the switching rod 9 forms the current conductor 2 in the region of the mounting flange 8 of the high-voltage bushing at an opening of the electrical device through which the
- High voltage bushing 1 passes through the wall.
- Diameter difference between the switching unit 5 and the current conductor 2 is used for reinforcing the insulation to the mounting flange 8 of the bushing, since in the area of the mounting flange 8, which is at ground potential, a high electrical
- the space which is freed up is used to place a field controller 19.
- FIG. 2 shows one
- High-voltage bushing 1 in which the drive unit 6 is part of the axial current path
- High-voltage bushing 1 forms and at one axial end 10 is electrically conductively connected via a switching linkage to a movable contact 11.1 of the switching unit 5 and is equipped on an opposite side 12 with a connection 13 for continuing the current path.
- the shift linkage has the actuating rod 9 of the switching unit 5, which is designed as an electrical conductor.
- FIG. 3 shows a third embodiment of the invention.
- the housing 7 is the
- Drive unit 6 designed such that it forms a shield and electrode of the high-voltage bushing 1 at its axial end.
- the drive unit 6 is positioned at the corresponding axial end of the high-voltage bushing and the housing 7 of the drive unit forming a waveguide is provided on its outer surface with a radius R to reduce the field strength.
- the axial termination of the waveguide or the housing of the switching unit thus provides the electrical shield or electrode
- the radius R of the rounding is chosen such that the field strength drops to such an extent that no additional shielding electrodes are necessary.
- the housing 7 of the drive unit 6 is with a
- connection lug 14 forms an electrical connection of the high-voltage bushing 1.
- the vacuum interrupter 5 comprises an insulating cylinder 5.5.
- the vacuum interrupter 5 is positioned such that this insulating cylinder 5.5
- the axial alignment of the switching unit 5 to the mounting flange 8 is carried out such that the axial distance A2 from the center of the insulating cylinder 5.5 to the center of the mounting flange 8 corresponds to a maximum of one third of the axial height of the insulating cylinder 5.2.
- the axial alignment of the switching unit 5 to the mounting flange 8 is carried out such that an axial distance A2 from the axial center of the insulating cylinder 5.5 to the axial center of the mounting flange 8 is set, which is less than the sum of two axial thicknesses of the Mounting flange 8.
- the insulating cylinder 5.5 forms the switching unit 5 and the inner one
- the current conductor carrying the fixed contact 11.2 of the vacuum interrupter and passing through the encapsulated housing of the vacuum interrupter is at the axial end of the high-voltage bushing 1 as
- the outer insulating body is additionally provided coaxially with bell-shaped shields 16 or ribs which cover the surface of the insulating body and thus the
- the insulator is
- FIG. 4 shows a fourth embodiment of the invention. In this embodiment, there are several
- Switching units 5.1, 5.2 also switching elements 5.1, 5.2 called, arranged within the contours of the high-voltage bushing 1.
- Switching units with different switching capacities are connected in series, one switching unit is used as a disconnector 5.1 and another switching unit is used as a circuit breaker 5.2. executed. Both the switching capacity and the
- the switching frequency of both switching units therefore differ from one another and each require a different design.
- Circuit breakers can switch the high short-circuit currents that occur in the event of faults.
- Disconnectors are used for
- the respective drive units 6 for the circuit breaker and the disconnector are each aligned in the direction of external connections 13, on which 7 connection lugs 14 are located on the respective housings.
- the housing 7 of the drive units 6 each forms a waveguide through which the current flows.
- the current conductor 2 is at least partially designed as a waveguide.
- Drive units 6 are rounded in the direction of the connections 13 and each form shields or electrodes.
- the housing 7 represents each of the two
- High-voltage bushing 1 represents.
- the ceramic insulating body 5.2 of the vacuum interrupter 5.1 forms the main insulation of the current conductor 2 to the mounting flange 8.
- Another preferred embodiment sees the series connection of several
- FIG. 5 A fifth embodiment of the invention is shown in FIG. 5. This embodiment discloses a compact one
- Control unit 17 for controlling the switching unit 5
- the drive unit 6 and an energy store are arranged within the cylindrical waveguide.
- the energy accumulator is a spring accumulator 18.
- the spring accumulator 18 is formed from an electrically non-conductive material, in the present case plastic.
- a field control 19 radially surrounds the waveguide of the current conductor 2.
- the field controller 19 is in the leadthrough body 3
- the lead-through body 3 is a RIP (resin impregnated paper) body, which is surrounded radially in sections by an insulating body made of, for example, porcelain or silicone and carrying shields 16.
- Shielding 16 is only on the first section 20,
- the high-voltage bushing 1 has a measuring arrangement 22 with devices for measuring the current and the voltage.
- the measuring arrangement 22 is
- Bushing body 3 recesses are provided, in which the measuring arrangement 22 is arranged.
- the depressions and thus the measuring arrangement 22 are covered by the insulating body of the bushing or its shields 16.
- the measuring arrangement 22 has a magneto-optical current sensor for measuring the current.
- the semiconductor arrangement is preferably formed by a Hall generator as a magnetic field-dependent semiconductor arrangement.
- Embodiment has a signal line in order to transport a measuring signal outgoing from the measuring arrangement 22.
- the signal line is fiber optic. Measured values obtained from the measurement signal are fed to a further comparative protective device (not shown).
- Auxiliary voltage source of the measuring arrangement is not
- thermo generator provided.
- the common component is dimensioned to be arranged within the high-voltage bushing 1.
- the bushing body 3 is the common component.
- Figure 6 shows a sixth embodiment of the invention.
- the force or spring accumulator 18 radially encloses the drive unit 6 and forms part of the insulating arrangement.
- the mounting flange 8 is arranged axially in the area of the switching rod 9 and both the switching unit 5 and the drive unit 6 are arranged axially away from the mounting flange 8.
- the space can be used for a larger distance, filled with insulating fluid, between the current path 2 and the mounting flange 8.
- the room can then also be divided with insulating material barriers in order to achieve a higher dielectric strength.
- FIG. 7 shows a further embodiment of the invention.
- a so-called oil-air duct is shown.
- the drive unit 6 is the head on the oil side of the
- High-voltage bushing 1 is provided.
- the opposite air-side head forms an end seal to the
- Insulating body 3 of the high-voltage bushing provided with screens 16 on the air side and is equipped with a connecting lug 14 in order to continue the current path outwards, that is to say away from the oil side.
- the air-side head is designed as a waveguide.
- a control and control unit 17 can be arranged inside this waveguide. If the implementation is designed as oil-impregnated
- the waveguide of the bushing head can be used alternatively or additionally as an oil expansion vessel for the oil used to impregnate the insulation of the bushing.
- the insulating arrangement has a main insulating body 23. The isolation arrangement points within the
- Main insulating body 23 has a second insulating body 24.
- a sensor system for example the
- Measuring arrangement 22 is provided.
- the measuring arrangement 22 is separated from the second insulating body 24 by the main insulating body 23
- the main insulating body 23 is therefore located between the sensor system and the second insulating body 24.
- the measuring arrangement 22 is covered by the insulating body or a shield 16 of the insulating body.
- the main insulating body 23 and the Second insulating body 24 are both circular cylindrical and hollow and surround the current conductor 2 coaxially.
- the exemplary embodiment is the drive unit 6 compared to the one that forms the current path and the drive unit 6
- Isolation arrangement four cylindrical insulating elements 26-29, which are arranged coaxially to each other.
- Drive unit 6 is inserted into a third insulating element 28, counted from the inside, and is designed as a head.
- a disk-shaped insulating element 30 closes the
- the oil-side connector 25 is provided that penetrates an insulating element 30.
- Figure 9 shows a simplified embodiment of the
- Switching unit encapsulates or encapsulates and isolates the contact system 11.1, 11.2 located in the switching unit and at the same time forms the insulation of the current path of the
- the drive unit 6 is attached to the switching unit 5. The switching movement is transmitted via the switching rod 9 to the movable contact 11.1 of the switching unit 5.
- the housing 7 of the drive unit 6 forms a waveguide, which continues the current path via the drive unit 6.
- the current conductor 2 carrying the fixed contact 11.2 of the vacuum interrupter and passing through the encapsulated housing of the vacuum interrupter is at the axial end of the high-voltage bushing 1 as
- the drive unit 6 is fastened to the switching unit 5 by means of a casting compound 35 on the switching unit 5.
- the potting compound simultaneously seals the area of the shift rod 9 and the
- Movement of the switching rod 9 enables metallic bellows of the vacuum interrupter 5 from the environment.
- the housing 7 of the drive unit 6 forming a waveguide is in the embodiment shown on it
- the encapsulation housing of the switching unit 5 is in the metallic region of the transition from the cylinder to the disk-shaped completion of the encapsulation with a second radius R2
- Insulating liquid filled devices e.g. B. a transformer with a cable junction box but also two with an insulating gas be filled vessels of an electrical device, e.g. B. a gas-insulated switchgear.
- the embodiment shown in FIG. 9 can also be implemented as a so-called oil-air feedthrough.
- the air-side part of the high-voltage bushing 1 beginning at the mounting flange 8 is preferably arranged with a concentric to the cylindrical wall of the switching unit 5
- the shields are applied directly to the housing of the switching unit.
- the housing 7 of the drive unit 6 is designed as a conductor, ie here as a waveguide, which surrounds the drive unit 6.
- the housing 7 of the drive unit 6 thus forms a section of the current path through the
- High-voltage bushing 1 through can be done by embedding the drive unit 6 in a pipe conductor, ie a tubular conductor (not shown).
- the connection piece, here as connection lug 14, is attached directly to the drive unit 6 designed as a conductor.
- the housing 7 of the drive unit 6 is rounded, as a result of which the housing 7 is designed as an electrode / shield.
- High-voltage bushing 1 has a connecting conductor 31, which connects the current path from the outside, the connecting lug 14, to the oil side.
- the connecting conductor 31 is also designed as a waveguide and forms a further section of the current path through the high-voltage bushing 1.
- a high-voltage bushing 1 for an electrical device which can be filled with a fluid, the high-voltage bushing 1 having a current conductor 2 and the current conductor 2 being surrounded by an insulating body 3, the insulating body 3 being part of an insulating arrangement, and the current conductor 2 being at least one
- This high-voltage bushing 1 has the advantage that the switching unit 5 is implemented in the high-voltage bushing 1 for the electrical device.
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018210617.7A DE102018210617A1 (de) | 2018-06-28 | 2018-06-28 | Hochspannungsdurchführung |
PCT/EP2019/064351 WO2020001926A1 (de) | 2018-06-28 | 2019-06-03 | Hochspannungsdurchführung |
Publications (1)
Publication Number | Publication Date |
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EP3788643A1 true EP3788643A1 (de) | 2021-03-10 |
Family
ID=66821218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19729687.4A Pending EP3788643A1 (de) | 2018-06-28 | 2019-06-03 | Hochspannungsdurchführung |
Country Status (3)
Country | Link |
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EP (1) | EP3788643A1 (de) |
DE (1) | DE102018210617A1 (de) |
WO (1) | WO2020001926A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE572083C (de) * | 1930-12-07 | 1933-03-10 | Bbc Brown Boveri & Cie | Hochspannungs-Hochvakuumschalter |
NL122541C (de) * | 1964-03-06 | |||
US3813506A (en) * | 1973-04-12 | 1974-05-28 | Gen Electric | Vacuum-type circuit breaker with improved ability to interrupt capacitance currents |
DE2822773A1 (de) * | 1978-05-24 | 1979-11-29 | Siemens Ag | Steckverbindung fuer gekapselte mittelspannungsanlagen |
DE4021945C2 (de) * | 1990-07-10 | 1999-12-30 | Alstom Sachsenwerk Gmbh | Schaltvorrichtung zur Unterbrechung von Fehlerströmen |
DE10325685A1 (de) * | 2003-06-02 | 2004-12-30 | Siemens Ag | Freiluftdurchführung mit integriertem Trennschalter |
DE102015212826A1 (de) * | 2015-07-09 | 2017-01-12 | Siemens Aktiengesellschaft | Gekapselte elektrische Durchführung |
CN110289190A (zh) * | 2015-10-23 | 2019-09-27 | 北京瑞恒新源投资有限公司 | 带真空灭弧室的多功能电容型套管 |
-
2018
- 2018-06-28 DE DE102018210617.7A patent/DE102018210617A1/de not_active Withdrawn
-
2019
- 2019-06-03 WO PCT/EP2019/064351 patent/WO2020001926A1/de unknown
- 2019-06-03 EP EP19729687.4A patent/EP3788643A1/de active Pending
Also Published As
Publication number | Publication date |
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WO2020001926A1 (de) | 2020-01-02 |
DE102018210617A1 (de) | 2020-01-02 |
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