CN111480212A - High-voltage power switch and method for electromagnetically shielding a vacuum interrupter in an insulator - Google Patents

High-voltage power switch and method for electromagnetically shielding a vacuum interrupter in an insulator Download PDF

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Publication number
CN111480212A
CN111480212A CN201880080426.9A CN201880080426A CN111480212A CN 111480212 A CN111480212 A CN 111480212A CN 201880080426 A CN201880080426 A CN 201880080426A CN 111480212 A CN111480212 A CN 111480212A
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CN
China
Prior art keywords
vacuum interrupter
insulator
shielding
shielding ring
power switch
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Granted
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CN201880080426.9A
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Chinese (zh)
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CN111480212B (en
Inventor
M.巴茨
A.哈通
M.克伦克
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Siemens Energy Global GmbH and Co KG
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Siemens AG
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    • 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
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • 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
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66292—Details relating to the use of multiple screens in vacuum switches

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  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The invention relates to a high-voltage circuit breaker (1) and to a method for electromagnetically shielding at least one vacuum interrupter (2) in an insulator (3) of a high-voltage circuit breaker (1). The high-voltage circuit breaker (1) comprises at least one vacuum interrupter (2), wherein the at least one vacuum interrupter (2) is arranged in an insulator (3) and has at least one shielding ring (4), wherein the at least one shielding ring (4) has two cross sections (6) differing from a circular cross section in a sectional plane along a rotational axis (5) of the shielding ring (4).

Description

High-voltage power switch and method for electromagnetically shielding a vacuum interrupter in an insulator
The invention relates to a high-voltage circuit breaker and to a method for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker. The high-voltage circuit breaker comprises at least one vacuum interrupter arranged in an insulator, which vacuum interrupter has at least one shielding ring.
High-voltage circuit breakers or high-voltage circuit breakers are designed to switch voltages in the range of up to 1200kV and currents in the range of up to several thousand amperes. Switching gases (Schaltgas), such as SF, are used here6The switching gas is harmful to the climate and/or contains toxic components. The long-term stable, gas-tight insulation of high-voltage circuit breakers, which reliably prevents gas leakage, is costly and increases the maintenance costs. Switches with alternative switching gases, for example Clean Air (dry, cleaned Air), are to be dimensioned larger in the same manner of construction and with the same maximum switching voltage or current to be switched, in order to ensure reliable electrical insulation between electrically conductive components, which increases costs. The use of vacuum interrupter tubes in combination with clean air as insulating gas in high-voltage circuit breakers is based on the use of a switching gas, such as SF, with rated and arcing contacts6Alternative to the gas-insulated switch of (1).
The vacuum interrupter is arranged in an outer insulator or insulator, which is designed, for example, as a cylinder with a rib that surrounds in a circular manner on the outer circumference, in order to increase the electrical insulation along the outer circumference in the direction of the longitudinal axis. The insulator is designed in one piece or in multiple parts, in particular in the form of a hollow cylinder, and is made of, for example, ceramic, silicone and/or composite material. The insulator is arranged upright during operation of the high-voltage circuit breaker, for example on a carrier or a support with a base. One or more vacuum interrupters are arranged, for example, along the longitudinal axis of the insulator, in particular coaxially to the longitudinal axis of the insulator, and are mechanically fixed in the insulator. The high-voltage circuit breaker may comprise more than one vacuum interrupter connected in series and/or in parallel, wherein for reasons of simplicity the following starts with one vacuum interrupter.
The vacuum interrupter is arranged in the interior of the insulator in a mechanically stable and electrically conductive manner and is connected between at least two external electrical connections, wherein the electrical connections are designed, for example, in the form of lugs for connecting high-voltage lines, generators and/or consumers. The design of a vacuum interrupter for a high-voltage circuit breaker is known, for example, from EP 0102317 a 2. The vacuum interrupter includes a housing in the form of a straight cylinder that is evacuated inside. The housing consists of two identical, straight cylindrical halves of ceramic or ceramic pieces joined at the middle of the housing by a metal cylinder or by a metal piece with a transition piece. The transition piece is designed as a screen or shielding in the housing.
The vacuum interrupter comprises at least one electrical contact for switching, which has a fixed and a movable contact piece. The at least one electrical contact may alternatively also comprise a plurality of movable contact pieces, with or without fixed contact pieces. For reasons of simplicity, the following starts with a vacuum interrupter having a fixed contact piece and a movable contact piece. The contact piece is configured in the form of a disk in the vacuum interrupter tube and is surrounded by a vacuum. The contact pins are guided in a pin-like manner outwards and are each electrically connected to an external electrical connection of the high-voltage circuit breaker, for example in the form of a terminal strip. The movable contact piece is guided and supported in a vacuum-tight manner in the vacuum interrupter tube by means of a bellows.
When the contact is closed, the movable contact piece is moved toward the fixed contact piece until there is a mechanical and electrical contact between the contact pieces. Upon opening, the movable contact is moved away from the fixed contact until the electrical contact between the contacts is interrupted and there is a sufficient distance to avoid a spark discharge or an electrical flashover when a voltage is applied. At higher voltages, for example in the range of 145kV, a larger distance between the contacts is required. The vacuum interrupter is designed to be long in order to ensure a sufficient distance inside. The straight-cylindrical half of the housing of the vacuum interrupter, which is made of ceramic or ceramic parts, is made of a plurality of parts, which are joined by a metal part having a transition piece. The transition piece is designed as a screen or shielding device in the housing. The connection of the ceramic parts of the housing by means of metal parts, for example made of copper and/or steel, is effected, for example, by means of soldering.
The electromagnetic field surrounding the contact is shielded in the vacuum interrupter by a screen. The metal parts with the transition pieces are each designed as a ring along the outer circumference of the vacuum interrupter and serve as shielding for electromagnetic fields. The annular shield is arranged along the outer circumference of the vacuum interrupter in a plane perpendicular to the longitudinal axis of the vacuum interrupter and has two circular cross sections in a section along the longitudinal axis. In order to avoid spark discharges between the annular shielding parts or between the shielding rings of the vacuum interrupter via the inner wall of the outer insulator of the high-voltage circuit breaker, the shielding rings of the vacuum interrupter are arranged at a distance from the inner wall of the insulator.
In particular, in vacuum interrupter tubes having cylindrical housing parts of the same diameter, the outer circumference of the vacuum interrupter tube is determined by the outer circumference of the shielding ring of the vacuum interrupter tube. The distance d from the inner wall of the insulator to the shielding ring of the vacuum interrupter determines the circumference of the insulator of the high-voltage circuit breaker in combination with the ring diameter of the shielding ring. The larger circumference is accompanied by higher manufacturing costs and higher material consumption of the insulator.
The object of the invention is to provide a high-voltage circuit breaker and a method for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker, which enable a reduced circumferential length of the insulator of the high-voltage circuit breaker, a reduced production cost and a reduced material consumption for the insulator compared to the prior art.
The object is achieved according to the invention by a high-voltage circuit breaker having the features of claim 1 and/or by a method for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker, in particular of the high-voltage circuit breaker, according to claim 11. Advantageous embodiments of the high-voltage circuit breaker according to the invention and/or of the method according to the invention for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker, in particular of a high-voltage circuit breaker described above, are specified in the dependent claims. The features of the independent claims can be combined with one another and with the features of the dependent claims, and the features of the dependent claims can be combined with one another.
The high-voltage circuit breaker according to the invention comprises at least one vacuum interrupter which is arranged in an insulator and comprises at least one shielding ring. At least one of the screening rings has two cross-sections in a sectional plane along the rotational axis of the screening ring, which cross-sections are different from the circular cross-section. In this connection, the axis of rotation through the shielding ring represents the axis running perpendicular to the ring plane through the center point of the annular ring.
A cross section different from a circular cross section achieves good shielding of the vacuum interrupter, a smaller outer circumference of the vacuum interrupter than a vacuum interrupter with a shielding ring of circular cross section, and thus a smaller circumference of the insulator of the high-voltage circuit breaker, with a consequent lower manufacturing costs and lower material expenditure for the insulator.
The at least one shielding ring may have two elliptical, and/or oval, race-track-like cross sections and/or rectangular cross sections with rounded corners in a sectional plane of the axis of rotation. Such a cross-section has a smaller diameter in one direction than a circular cross-section, with the same shielding effect, and has the advantages described above.
The at least one vacuum interrupter can be cylindrical in design and the insulator can be hollow-cylindrical in design and have a circular base surface, wherein the at least one vacuum interrupter can be arranged coaxially in the insulator. The axis of rotation of the at least one shield ring may be coaxial with the longitudinal axis of the at least one vacuum interrupter. The shielding ring of the vacuum interrupter is thus at any point along the circumference at the same, in particular at a minimum, distance from the inner wall of the insulator. The insulator can be designed with a minimum circumference and with the advantages described above.
The at least one shielding ring can be arranged around the outer circumference of the at least one vacuum interrupter, in particular in mechanically stable connection with the at least one vacuum interrupter. In this way, changes in the position of the at least one shielding ring, for example as a result of mechanical vibrations, during operation of the high-voltage circuit breaker, can be avoided, and spark discharges as a result of changes in the spacing of the shielding rings can be prevented.
The cross section of the at least one shielding ring can be flattened or flattened in a sectional plane of the rotational axis of the at least one shielding ring in the direction of the at least one vacuum interrupter and/or in the direction of the inner wall of the insulator. This cross-section has a smaller diameter than the circular cross-section in the direction of the vacuum interrupter and/or in the direction of the inner wall of the insulator, with the same shielding effect, and has the advantages described above.
Two, four or at least six shield rings may be included. In particular, when the shielding rings are arranged regularly along the longitudinal axis of the vacuum interrupter on the outer circumference of the vacuum interrupter, good electromagnetic shielding of the vacuum interrupter can be achieved, in particular outwards.
The at least one shielding ring can be mechanically and/or electrically connected to the at least one shielding electrode inside the at least one vacuum interrupter. This makes it possible to provide the vacuum interrupter with a better electromagnetic shielding, in particular towards the outside, and to fix the shielding electrode mechanically stable within the at least one vacuum interrupter and within the at least one shielding ring.
The at least one shielding ring can be made of a conductive material, in particular metal, in particular copper and/or steel, or conductive plastic, or plastic with conductive particles, in particular silicone with carbon black particles. Copper and steel have better electrical conductivity and can achieve better shielding effect for a given shape or can attenuate electromagnetic fields. The same advantages apply to conductive plastics and/or to plastics with conductive particles, for example silicone with carbon black particles. In particular, a better shielding effect can be achieved by reduced induced currents in the shielding ring and/or by influencing the field line profile of the electromagnetic field.
The at least one shielding ring may have a minimum and/or maximum distance d in the range of millimeters to several centimeters with respect to the inner wall of the insulator. Such a distance d prevents spark discharges from occurring between the screening rings via the inner wall of the insulator, in particular when the insulator is filled with an insulating gas, for example clean air.
The method according to the invention for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker, in particular of the aforementioned high-voltage circuit breaker, comprises electromagnetically shielding the at least one vacuum interrupter by means of at least one shielding ring, the two cross sections of which in a sectional plane of the axis of rotation run flat in comparison with the cross section in a direction parallel to the axis of rotation adjacent to the at least one vacuum interrupter and/or adjacent to the insulator.
The advantages of the method according to the invention for electromagnetically shielding at least one vacuum interrupter in an insulator of a high-voltage circuit breaker, in particular of the aforementioned high-voltage circuit breaker, according to claim 11 are similar to the aforementioned advantages of the high-voltage circuit breaker according to the invention according to claim 1, and vice versa.
Embodiments of the present invention are shown in fig. 1-4 below and are set forth in detail below. In the drawings:
fig. 1 shows a schematic sectional illustration of a high-voltage circuit breaker 1 according to the invention, viewed from one side, with a shielding ring 4 of a vacuum interrupter 2, which has a cross section 6 that differs from a circular cross section; and is
Fig. 2 schematically shows an enlarged detail of the shielding ring 4 of fig. 1 with an elliptical cross section 6 in a sectional view; and is
Fig. 3 schematically shows an enlarged detail of the shielding ring 4 of fig. 1 in a sectional view with an oval racetrack-shaped cross section 6; and is
Fig. 4 shows schematically in a sectional view an enlarged detail of the shielding ring 4 of fig. 1 with a rectangular cross section 6 with rounded corners.
Fig. 1 shows a schematic sectional view of a part of a high-voltage circuit breaker 1 according to the invention, viewed from one side. The high-voltage circuit breaker 1 comprises a vacuum interrupter tube 2 arranged in an insulator 3. The insulator 3 is filled, for example, with clean air as an insulating gas, and the vacuum interrupter 2 is arranged at a distance from the insulator 3 with a longitudinal axis 5 coaxial with the longitudinal axis 5 of the insulator 3. The minimum distance d between the vacuum tube 2 and the inner wall 7 of the insulator is in the range of e.g. millimeters or centimeters.
The high-voltage circuit breaker 1 is similar to a circuit breaker comprising a rated contact and a quenching contact and is filled, for example, with SF6The high-voltage circuit breaker according to (1) is constructed only by including the vacuum interrupter tube 2 instead of the rated contact and the arcing contact, and using, for example, clean air as the insulating gas. The insulator 3 is made of, for example, ceramic, silicone and/or an electrically insulating composite material. The insulator 3 is of a columnar, cylindrical, hollow construction with annular ribs along the outer periphery, which has the advantages described above. The base and the top of the cylindrical insulator 3 are hermetically sealed and each is provided with an external electrical connection of the high-voltage circuit breaker 1, which is not shown in the drawing for the sake of simplicity.
In the region of the base and top cover surfaces, the vacuum interrupter 2 is mechanically fixed in space in the insulator 3, in particular by means of a holding element, and the vacuum interrupter 2 is electrically connected to an external terminal of the high-voltage circuit breaker 1, which is also not shown in the drawing for the sake of simplicity. The drive, for example a spring-loaded drive, can drive the vacuum interrupter 2 electrically on and off by means of elements of the kinematic chain, for example a drive, a triggering element and/or a switching lever, in particular by means of a movement of the movable contact piece in the vacuum interrupter 2 toward and/or away from the fixed contact piece. The high-voltage circuit breaker 1 can be designed as a multi-pole switch, in particular as a three-pole switch with three vacuum interrupter tubes 2, which vacuum interrupter tubes 2 are each arranged in an insulator 3. Alternatively or additionally, a plurality of vacuum interrupters 2 can be arranged in series and/or parallel connection in one insulator 3 or in different insulators 3. The arrangement can be realized by means of insulating columns which stand vertically on one or more supports and/or in the shape of a T-shaped support, wherein on each side of the T-shape an insulator 3 is arranged as an arm of the T-shape.
As mentioned before, the vacuum interrupter 2 comprises a housing in the form of a straight cylinder which is evacuated on the inside. The housing is formed by ceramic parts, in particular identical, right cylindrical parts, which are joined by a metal part having a transition piece. The transition piece is designed as a screen or shielding device in the housing and is mechanically fixedly connected to the ceramic piece, in particular by soldering. In the outer region of the vacuum interrupter 2, the transition piece has an annular shape and serves as a shielding ring 4. In the central region of the vacuum interrupter 2, in which, instead of a ceramic part, a cylindrical metal shielding is arranged between the two shielding rings 4, there is a contact end within the vacuum interrupter 2, which contact end is designed in particular as a disk.
The shielding rings 4 are each arranged on the outer circumference of the vacuum interrupter 2 in a plane perpendicular to the longitudinal axis 5 of the vacuum interrupter 2 and are spaced apart from one another along the longitudinal axis 5 of the vacuum interrupter 2. The distance between adjacent shielding rings 4 can be in the range of centimeters to meters, in particular if the shielding rings 4 are arranged regularly along the longitudinal axis 5 of the vacuum interrupter 2. Fig. 1 shows a cross section of the shield ring 4 cut at one side in the region bounded by the dashed line. The profile is realized in the plane of the longitudinal axis 5 of the vacuum interrupter or of the axis of rotation 5 of the shielding ring 4. According to the invention, the cross section 6 of the shielding ring 4 in the section plane does not have a circular or round shape, but is flat parallel to the inner wall 7 of the insulator 3 and parallel to the cylindrical circumference of the vacuum interrupter 2, i.e. has a small or even no curvature in the direction of the inner wall 7 of the insulator 3 and in the direction of the cylindrical circumference of the vacuum interrupter 2. "direction towards …" means "adjacent to …".
Fig. 2 to 4 show enlarged sections through the shielding ring 4, as shown in the region of fig. 1 bounded by dashed lines. In fig. 2, the shielding ring 4 has an elliptical shape in the plane of the axis of rotation 5 or a section through the longitudinal axis of the vacuum interrupter 2 and/or of the insulator 3. In fig. 3, the shielding ring 4 has an oval, racetrack-like shape in a sectional plane of the axis of rotation 5. In fig. 4, the shield ring 4 has a rounded rectangular shape in a sectional plane of the rotation axis 5. By the shape of the shielding ring 4, an optimal or good shielding of the electromagnetic field is achieved in the smallest diameter in the direction perpendicular to the axis 5. In this way, the inner diameter and the outer diameter of the insulator 3 can be reduced compared to a shield ring 4 with a circular cross section or with two circular cross-sectional shapes in the plane of the axis 5, if the distance d from the inner wall 7 of the insulator 3 to the shield ring 4 or the vacuum interrupter 2 is the same.
The above-described embodiments can be combined with each other and/or with the prior art. Thus, for example, the transition piece can be incorporated as an additional part, for example pressed, soldered, welded and/or glued, into the shielding ring 4. Alternatively, the transition piece can be produced in one piece with the shielding ring 4, in particular from a metal plate, for example a copper plate and/or a steel plate. The shield ring 4 may have the shape as shown in the drawings, or have other shapes flattened on the outer and inner peripheries of the ring, for example, a hexagonal or polygonal shape having rounded corners on each side in cross section, respectively. The distance of the shield rings 4 from each other may be regular, especially in case the shield rings 4 are arranged parallel to each other, respectively. Alternatively, for example, instead of a ceramic cylinder, a metal cylinder can be arranged in the central region of the vacuum interrupter 2, wherein the shielding ring 4 can in particular be molded or fastened directly on the metal cylinder and the distance of the shielding ring 4 in this region differs from the distance of the shielding rings in the region of the ceramic cylinders connected to one another. The shielding rings 4 can also be arranged at irregular distances from one another, in particular along the length of the cylindrical vacuum interrupter 2. The vacuum interrupter 2 and/or the shielding ring 4 can enclose a circular surface, i.e. the bottom and top cover surfaces of the vacuum interrupter 2 are circular. Alternatively, the vacuum interrupter 2 and/or the shielding ring 4 can enclose further surfaces, for example an ellipsoid.
List of reference numerals
1 high-voltage power switch
2 vacuum switch tube
3 insulator
4 shield ring
5 axes of rotation
6 cross section
7 inner wall of insulator
d distance of the shield ring (4) relative to the inner wall of the insulator (3)

Claims (11)

1. High-voltage power switch (1) with at least one vacuum interrupter (2), the vacuum interrupter (2) being arranged in an insulator (3) and comprising at least one shielding ring (4), characterized in that,
the at least one shielding ring (4) has two cross sections (6) differing from a circular cross section in a sectional plane along the rotational axis (5) of the shielding ring (4).
2. High voltage power switch (1) according to claim 1,
the at least one shielding ring (4) has two elliptical and/or oval, racetrack-shaped cross sections (6) and/or rectangular cross sections (6) with rounded corners in a sectional plane of the rotational axis (5).
3. High voltage power switch (1) according to one of the preceding claims,
the at least one vacuum interrupter (2) is cylindrical in design and the insulator (3) is hollow-cylindrical in design and has a circular base surface, wherein the at least one vacuum interrupter (2) is arranged coaxially in the insulator (3).
4. High voltage power switch (1) according to one of the preceding claims,
the axis of rotation (5) of the at least one shielding ring (4) is coaxial to the longitudinal axis (5) of the at least one vacuum interrupter (2).
5. High voltage power switch (1) according to one of the preceding claims,
the at least one shielding ring (4) is arranged around the outer circumference of the at least one vacuum interrupter (2), in particular in mechanically stable connection with the at least one vacuum interrupter (2).
6. High voltage power switch (1) according to one of the preceding claims,
the cross section (6) of the at least one shielding ring (4) is flat in a sectional plane of the rotational axis (5) of the at least one shielding ring (4) in the direction of the at least one vacuum interrupter tube (2) and/or in the direction of the inner wall of the insulator (3).
7. High voltage power switch (1) according to one of the preceding claims,
comprising two, four or at least six shielding rings (4).
8. High voltage power switch (1) according to one of the preceding claims,
the at least one shielding ring (4) is mechanically and/or electrically connected to the at least one shielding electrode inside the at least one vacuum interrupter (2).
9. High voltage power switch (1) according to one of the preceding claims,
the at least one shielding ring (4) is made of a conductive material, in particular metal, in particular copper and/or steel, or a conductive plastic, or a plastic with conductive particles, in particular silicone with carbon black particles.
10. High voltage power switch (1) according to one of the preceding claims,
the at least one shielding ring (4) has a minimum and/or maximum distance (d) in the range of millimeters to several centimeters with respect to the inner wall of the insulator (3).
11. Method for electromagnetically shielding at least one vacuum interrupter (2) in an insulator (3) of a high-voltage circuit breaker (1), in particular a high-voltage circuit breaker (1) according to one of the preceding claims, comprising electromagnetically shielding the at least one vacuum interrupter (2) by means of at least one shielding ring (4), two cross sections (6) of the at least one shielding ring (4) in a sectional plane of a rotational axis (5) running flat compared to the cross section in a direction parallel to the rotational axis (5) adjacent to the at least one vacuum interrupter (2) and/or adjacent to the insulator (3).
CN201880080426.9A 2017-12-15 2018-11-15 High-voltage power switch and method for electromagnetically shielding a vacuum interrupter in an insulator Active CN111480212B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017222941.1A DE102017222941A1 (en) 2017-12-15 2017-12-15 High voltage circuit breaker and method for electromagnetically shielding a vacuum interrupter in an insulator
DE102017222941.1 2017-12-15
PCT/EP2018/081301 WO2019115128A1 (en) 2017-12-15 2018-11-15 High-voltage circuit breaker and method for electromagnetically shielding a vacuum interrupter in an insulator

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CN111480212A true CN111480212A (en) 2020-07-31
CN111480212B CN111480212B (en) 2022-11-04

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EP (1) EP3698389A1 (en)
CN (1) CN111480212B (en)
DE (1) DE102017222941A1 (en)
WO (1) WO2019115128A1 (en)

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JP2023536762A (en) * 2020-08-12 2023-08-29 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト wall bushing

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DE102020212385A1 (en) * 2020-09-30 2022-03-31 Siemens Energy Global GmbH & Co. KG High voltage device and method for increasing the dielectric strength in the high voltage device
DE102022201174A1 (en) * 2022-02-04 2023-08-10 Siemens Energy Global GmbH & Co. KG Controllable vacuum interrupter and arrangement as well as method for switching off vacuum interrupters

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CN106128850A (en) * 2016-08-24 2016-11-16 厦门普力维电气科技有限公司 A kind of outdoor high-voltage pole or automatic circuit
CN206194633U (en) * 2016-08-31 2017-05-24 朋友电力科技有限公司 Pole -mounted circuit breaker
CN106783366A (en) * 2017-01-13 2017-05-31 中航宝胜电气股份有限公司 126kV cylinder vacuum breakers with high current carrying capacity

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JP2023536762A (en) * 2020-08-12 2023-08-29 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト wall bushing
JP7487409B2 (en) 2020-08-12 2024-05-20 ヒタチ・エナジー・リミテッド Wall Bushing

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