EP4173100A1 - Support structure for an electrical conductor - Google Patents
Support structure for an electrical conductorInfo
- Publication number
- EP4173100A1 EP4173100A1 EP20764021.0A EP20764021A EP4173100A1 EP 4173100 A1 EP4173100 A1 EP 4173100A1 EP 20764021 A EP20764021 A EP 20764021A EP 4173100 A1 EP4173100 A1 EP 4173100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding device
- support structure
- conductor
- grounding
- holding
- 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
- 239000004020 conductor Substances 0.000 title claims abstract description 63
- 239000011810 insulating material Substances 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
Definitions
- the invention relates to a support structure for an electrical line with a holding device for holding at least one live conductor and with a grounding conductor for grounding the support structure.
- Such a support structure can, for example, be a support structure for an overhead line, in particular an overhead line pylon.
- An overhead line can, for example, be a high-voltage overhead line with conductor cables.
- this is usually set up on the floor (and mechanically fastened to it), the holding device being arranged and designed in such a way that the live conductor or conductors (i.e. conductors that are at a potential different from the ground potential during operation e.g. a high-voltage potential of more than 10 kV) are arranged at a distance from the floor that corresponds to the application.
- supporting structures appropriate to the type, in particular high-voltage overhead line pylons are usually made of metal in the basic construction.
- plastics in the electrically relevant area of load-bearing components of the support structure, d. H . in demj enigen area that carries the at least one conductor or. is in contact with this .
- the installed support structure usually extends vertically upwards from a subsurface.
- the at least one live conductor is usually arranged at a relatively large distance (for example more than one or more than two meters) from the ground. Storms can therefore lead to lightning strikes on the supporting structure.
- the grounding conductor therefore serves in particular as a lightning conductor.
- the grounding conductor attached to an upper end of the support structure and a opposite, ground-level end of the support structure. Electrical insulation between the live conductor and the ground and between possibly several live conductors is usually achieved by means of suitable dimensioning or dimensioning of the support structure, which determines or creates sufficient distances between them (corresponding to the electrical strength of the air).
- the object of the invention is to propose a support structure as mentioned at the outset that is as reliable and inexpensive as possible.
- the object is achieved according to the invention in that the grounding conductor is routed past the live conductor by means of a high-voltage bushing.
- the high-voltage bushing suitably comprises an inner conductor which is passed through an insulating body.
- the high-voltage bushing is expediently inserted in series in the grounding line, i.e. the inner conductor forms part of the grounding line or grounding conductor (or equivalently: the grounding line or grounding conductor forms the inner conductor in that section which is routed through the insulating body ) .
- the grounding conductor is also at a ground potential when the support structure is in operation, whereas the at least one live conductor may be at a high-voltage potential of more than 100 kV, electrical flashovers can occur between them. Such flashovers can be prevented by means of the high-voltage bushing.
- the distances between conductors at different potentials can advantageously be reduced or kept small in this way (e.g. between the grounding conductor and the live conductor). This advantageously lowers the cost of the support structure.
- the carrying structure suitably comprises a support section which, when the carrying structure is in operation or after it has been installed stallation extends from the ground up , with the holding device being arranged above the support section and being mechanically connected thereto .
- the support section can be made of steel or another material with suitable mechanical strength, for example.
- the support section can include one or more feet, by means of which the support structure can be securely installed or can be set up .
- the grounding conductor can be routed inside or outside of the support section.
- the holding device is expediently designed in such a way that the at least one live conductor is held during operation of the support structure or which, when installed, runs transversely to the grounding conductor.
- the grounding conductor can extend essentially vertically between an upper end of the support structure and the ground, while the live conductor or conductors run essentially horizontally.
- the holding device is formed at least partially from at least one insulating material.
- load-bearing components of the device ie those who at least partially bear the weight of the current-carrying conductors and the weight of the holding device itself.
- the holding device particularly preferably consists essentially entirely of one or more insulating materials.
- the holding device has an outer, (mechanically) supporting housing that is at least partially filled with an insulating material.
- the holding device can comprise several (partial) housings, each of which is filled with the insulator material. the housing they can be essentially cylindrical, for example. With such a construction, the weight of the holding device in particular can be kept low.
- the housing can, for example, be made of a plastic, e.g. B. consist of a fiber-reinforced plastic or include such.
- the insulator material is preferably in the form of a foam. Suitable specific insulator materials of this type are generally known to those skilled in the art (such as polyurethane foam).
- the high-voltage bushing is preferably a capacitively controlled bushing.
- the high-voltage bushing can comprise an insulating body with insulating layers which are separated from one another by conductive control inserts for capacitive field control.
- the control inserts are suitably arranged concentrically with one another.
- the insulation layers can include paper or other insulation materials, such as plastics, and can be wound onto the inner conductor (or a suitable winding core).
- the effect of a capacitive voltage division is advantageously used, which linearizes the electrical load of a physically caused, non-linearly loaded insulation path. As a result, the insulation distances to earth and between the phases of the live conductors are loaded homogeneously.
- the high-voltage bushing is preferably a dry-insulated bushing.
- the high-voltage bushing can comprise an insulating body that is resin-impregnated (for example, by resin-impregnated insulating layers of paper or . are resin-impregnated) .
- a dry-insulated bushing forms a compact block with its insulating body (after hardening), which can be easily integrated into the holding device and at the same time has very good dielectric properties.
- the high-voltage bushing preferably includes an insulating body through which the grounding conductor is passed, the insulating body having an axial length of at least 400 cm. These dimensions ensure adequate insulation even at high voltages.
- the holding device is a first holding device and the supporting structure comprises a further holding device for holding at least one further live conductor, the holding devices being connected to one another and the further holding device being arranged above the first holding device when the supporting structure is in operation.
- the two or more holding devices are accordingly arranged one above the other, which advantageously makes it possible to arrange a larger number of live conductors.
- FIG. 1 shows an exemplary embodiment of a support structure according to the invention in a schematic representation
- FIG. 2 shows a section of a support structure according to the invention in a schematic representation.
- a support structure 1 is shown in FIG.
- the supporting structure 1 is in the installed state or operational .
- the support structure 1 is placed on a base 2 and extends vertically upwards from it.
- the supporting structure 1 comprises a holding device 3 for holding ten a variety of number of live conductors 4-7 with a total of twelve f conductor cables that run across the plane of the drawing in the example shown.
- the holding device 3 is arranged above a support section 8 and mechanically connected to it.
- the support section 8 is used for mechanically stable support of the holding device 3 on the base 2 .
- the holding device 3 comprises a base section 9 and a first arm 10 , a second arm 11 and a third arm 12 .
- the first and the second arm 10 and 12 extend essentially horizontally , while the second arm extends vertically , similarly to the base portion 9 .
- Both the base section 9 and the three arms 10-12 are cylindrical in their basic form. They have a similar basic structure, which is explained below with reference to the base section 9 .
- the base section 9 has a housing 13 made of a plastic. An interior space 14 in the housing 13 is filled with an electrically insulating foam 15 . On the outside of the housing 13 are silicone or Ceramic screens 16 attached.
- the support structure 1 also includes a grounding line with a grounding conductor 17 which, in the example shown, is routed from an upper end 18 of the holding structure 3 through the second arm 11 , the base section 9 and the support section 8 to the substrate 2 .
- the grounding conductor 17 is routed past the live conductors 4-7 by means of a high-voltage bushing 19 , with an inner conductor 20 of the high-voltage bushing 19 forming part of the grounding conductor 17 .
- the high-voltage bushing 19 is a capacitively controlled dry-insulated bushing. The structure of the high-voltage bushing is discussed in more detail in connection with FIG.
- the live conductors carry a voltage of more than 100 kV.
- the grounding line with the grounding conductor 17 is at ground potential.
- the use of the high-voltage bushing 19 allows isolating distances between the live conductors 4-7 and the ground conductor 17.
- FIG. 2 shows a section of the support structure 21, which shows the construction of the high-voltage bushing 19.
- the high-voltage bushing 19 includes an inner conductor 20 which is passed through an insulating body 22 .
- the insulating body 22 comprises insulating layers 23, 24 made of paper, which are separated from one another by concentrically arranged, suffering control inserts 25, 26 for controlling the electric field.
- the insulating body 22 is impregnated with a resin, preferably an epoxy resin.
- the resin body of the insulating body 22 formed by the impregnation is directly embedded in the insulating foam 15, ie without its own housing.
Landscapes
- Insulators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2020/072757 WO2022033690A1 (en) | 2020-08-13 | 2020-08-13 | Support structure for an electrical conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4173100A1 true EP4173100A1 (en) | 2023-05-03 |
Family
ID=72266263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20764021.0A Pending EP4173100A1 (en) | 2020-08-13 | 2020-08-13 | Support structure for an electrical conductor |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4173100A1 (en) |
WO (1) | WO2022033690A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE0102153D0 (en) * | 2001-06-14 | 2001-06-14 | Abb Ab | Chair head for overhead line |
US6930243B1 (en) * | 2004-02-13 | 2005-08-16 | Halm C. King, Jr. | Ground wire insulator post for utility poles |
US8859895B2 (en) * | 2009-09-08 | 2014-10-14 | State Grid Electric Power Research Institute | Method for vertically grounding and leading down from center of composite pole tower and pole tower thereof |
EP2375423A1 (en) * | 2010-04-07 | 2011-10-12 | ABB Research Ltd. | Electrical bushing |
CN213546021U (en) * | 2017-12-12 | 2021-06-25 | 西门子股份公司 | High-voltage bushing |
-
2020
- 2020-08-13 EP EP20764021.0A patent/EP4173100A1/en active Pending
- 2020-08-13 WO PCT/EP2020/072757 patent/WO2022033690A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2022033690A1 (en) | 2022-02-17 |
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Legal Events
Date | Code | Title | Description |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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17P | Request for examination filed |
Effective date: 20230126 |
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AK | Designated contracting states |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HSP HOCHSPANNUNGSGERAETE GMBH |