WO2014026212A1 - Vorrichtung zum ableiten elektrischer ströme - Google Patents
Vorrichtung zum ableiten elektrischer ströme Download PDFInfo
- Publication number
- WO2014026212A1 WO2014026212A1 PCT/AT2013/050161 AT2013050161W WO2014026212A1 WO 2014026212 A1 WO2014026212 A1 WO 2014026212A1 AT 2013050161 W AT2013050161 W AT 2013050161W WO 2014026212 A1 WO2014026212 A1 WO 2014026212A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode body
- ableitstrang
- sheath
- water
- strands
- Prior art date
Links
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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
Definitions
- the invention relates to a device to be arranged in soil or in a body of water for the discharge of electric currents, in particular of surge currents.
- An object of the invention is therefore to design a device for dissipating particular impact currents into the ground in such a way that not only the surge current discharge can be markedly improved, but also advantageous laying conditions can be maintained.
- the inventive device has a central Ableitstrang (Erder strand) and an electrode body which is electrically connected to the Ableitstrang.
- the above-mentioned object - the dissipation of electricity into the ground - is achieved in that the sheath strands along a cone sheath with the Ableitstrang as an axis and connect in the region of the cone base to a floor and that the Ableitstrang formed by the sheath strands and the bottom electrode body passes through and is electrically insulated above the electrode body.
- the sheath strands are connected together via the bottom to form an electrode body with a coaxial alignment with the conductor strip, the laying of such an electrode body results in a comparatively small area requirement, without the current being conducted over several affecting parallel branch streams, which are introduced into the soil in an appropriate distribution and discharged through the soil.
- the sheath strands and the bottom of this electrode body form a Faraday cage, which is penetrated by the Ableitstrang. Because of the main component of the surge current to be dissipated by the conductive strip, favorable conditions for low step voltages arise with regard to the potential profiles occurring outside the electrode body, especially as the section of the conductive conductor above the electrode body is electrically insulated.
- the base can be provided with apertures distributed over the bottom surface. Through these openings, the backfilling and filling of the electrode body is facilitated with soil, between the soil and the lowest possible electrical contact resistance should be specified. For this purpose, the soil can be treated accordingly, so that even high requirements for the current dissipation corresponding conditions can be ensured with respect to the electrolytic behavior of the soil in the region of the electrode body.
- the perforations of the floor which should have sufficient dimensional stability for laying, can be achieved in that the floor comprises a ladder grid. But it is also possible to make the floor of a perforated plate, but in general with a higher design effort onsaufwand is connected, because these perforated plates must have a sufficient for the line of high surge currents thickness.
- the floor may be flat, which provides simple design conditions, more favorable conditions can be ensured with regard to the discharge of current into the ground, if the floor has a downwardly convexly curved shell shape, because in this case the current dissipation into the ground over a larger Surface area occurs.
- a bowl-shaped arched bottom provides better dimensional stability.
- Particularly advantageous design conditions can be ensured in this context if the base is shaped in the manner of a spherical cap to which the sheath strands are preferably connected in an electrically conductive manner uniformly distributed over the circumference.
- the stated object is achieved in that the penetrated by Ableitstrang electrode body comprises a bottom and a shell of sheath strands, which are connected with their remote from the ground ends with the Ableitstrang, and that the Ableitstrang example in an electrical length adapted to the immersion depth of the electrode body, a NEN-preventing flashover between the Ableitstrang and the water surface minimum length is executed.
- the electrode body comprises a bottom and a jacket connected to the bottom of sheath strands, which are connected to the Ableitstrang, the electrode body is a relatively lightweight, easy to handle unit that only needs to be lowered via the Ableitstrang in the water.
- the sheath strands electrically connected to the Ableitstrang provide a structurally predetermined division of the surge currents into individual, parallel branch streams, which are derived via the sheath strands and the subsequent soil in the surrounding water.
- the sheath strands and the bottom of the electrode body form a Faraday cage, which is penetrated by the Ableitstrang.
- the surge current to be derived results in favorable conditions for low potential differences in the area of the water surface, particularly since the drainage strand can be designed to be electrically insulated in a minimum length corresponding to the immersion depth of the electrode body in such a way that due to the water surface extending beyond the water surface electrical insulation can not result in flashovers between the Ableitstrang and the water surface.
- the electrode body which is preferably adapted to the shape of a Taylor cone due to the configuration of the bottom and the jacket, thus represents favorable conditions for an effective energy transfer to the water.
- the sheath strands of the electrode body can thereby be made into circumferential strands Sheath grid to be connected.
- the arrester string can protrude downwards over the bottom of the electrode body with a ground electrode tip.
- the earthing tip penetrates into the bottom of the water, so that the main portion of the surge current conducted via the conductor run can be introduced directly into the bottom of the water.
- the bottom of the electrode body may comprise a conductor grid, over which the branch currents are additionally divided by the sheath strands of the sheath.
- weight savings are possible by such a construction measure, which improve the handling of such electrode body.
- the stress on the earthing tip when penetrating the ground can only be imperfectly absorbed by such a conductor grid.
- the bottom of the electrode body in the region of the electrode tip can have a sheet metal insert, which brings a sufficient stiffening of the existing of a conductor grid bottom of the electrode body with itself to ensure safe penetration of the electrode tip into the water bottom when lowering the electrode body.
- the center of gravity of the electrode body can be displaced with the effect against the ground, that the electrode body automatically occupies an advantageous upright position for its function.
- the Ableitstrang extend coaxially to the bottom of the electrode body.
- the sheath strands of the sheath extend in this case along a cone.
- Particularly advantageous construction conditions result in this context when the bottom of the electrode body is shaped in the manner of a spherical cap.
- Fig. 1 shows a device according to the invention which for deriving
- Fig. 2 shows the device of Fig. In a sectional view with a horizontal
- Fig. 3 shows a device according to the invention, which for the derivation of
- 4 shows the device of FIG. 3 in a sectional view with a horizontal sectional area and looking downwards.
- the device shown in FIGS. 1 and 2 for discharging surge currents has a discharge line 3 which is connected, for example, via a test device 2 to an aboveground arrester 1 and passes through an electrode body 5 arranged at a distance below the surface of a soil 10.
- This electrode body 5 is formed by sheath strands 7 and a bottom 6.
- the bottom runs flat and has a round polygonal contour or, depending on the number of sheath strands, 7 polygons.
- the floor 6 made of a ladder grid according to the illustrated embodiment is provided with an upper connecting ring 12 for the sheath strands 7.
- the Ableitstrang 3 passes through the bottom 6 in an Erderspitze 8, which projects beyond the bottom 6 down into the soil 10.
- the Ableitstrang 3 o- above the electrode body 5 is provided with an electrical insulation 4.
- the electrode body 5 has a longitudinal axis which coincides with the conductor strip 3 and the sheath strands 7 do not extend substantially parallel to the surface as in a conventional manner, but run along a conical surface which is coaxial with the conductor strand, a comparatively small one results for the laying of the electrode body , Aushub Chemistry adapted to the base surface of the cone defined by the sheath strands 7 Aushub measurements.
- the Ableitstrang 3 advantageously forms a Tiefenerder with the electrode body 5, which is advantageous in terms of limiting the risk of higher step voltages , in particular in connection with the electrical insulation 4 of the Ableitstrangs 3 above the electrode body. 5
- the apparatus shown in Fig. 3 and Fig. 4 for discharging surge currents into a body of water 13 has a lowered into the water body 13 electrode body 5, which comprises a bottom 6 and a sheath of sheath strands 7, the e-lektrisch conducting with a Ableitstrang 3 are connected, which passes through the electrode body 5 and protrudes with an electrode tip 8 on the bottom 6 downwards.
- the Ableitstrang 3 is connected for example via a test device 2 with a lightning protection system, not shown, wherein the arrangement is made such that the Ableitstrang 3 is electrically isolated in a adapted to the depth of the electrode body 5 minimum length designed so that the electrical insulation. 4 extends over the water surface in a sufficient length to avoid flashovers between the Ableitstrang 3 and the water surface.
- the bottom 6 of the electrode body 5 is designed in the form of a spherical cap, at the edge of which the sheath strands 7 of the sheath are connected in a uniform circumferential distribution, so that the result for the electrode body 5 is an outlined form aligned to a Taylor cone, which is particularly suitable for the energy transfer from the electrode body to the water.
- the bottom 6 itself has a conductor grid over which an additional splitting of the branch currents flowing through the sheath strands 7 of the sheath of the electrode body 5 results.
- a conductor grid is not well suited for the absorption of pressure loads on the earthing tip 8. For this reason de the bottom 6 is provided in the region of the Erderspitze 8 with a sheet metal insert 9, to which the conductor grid 9 is connected.
- the electrode body 5 need only be lowered via the Ableitstrang 3 into the water 13, a minimum immersion depth to be maintained in order to safely rule out dangerous potential differences on the water surface can.
- the body of water 13 has a depth which allows the electrode body 5 to be lowered down to the water bottom 1 1, an immediate discharge of part of the surge current into the water bottom 1 1 can be achieved, when connected to the conductor 3 via the ground 6 of the electrode body 5 projecting earthing tip 8 penetrates into the water bottom 1 1, as indicated in Fig. 3.
- the electrode tip 8 carrying sheet metal insert 9 also the center of gravity of the electrode body 5 can be extended so far against the bottom 6, that a gravitational Aufrichtmoment for autonomous maintenance of an upright position of the electrode body can be ensured, indicating an advantageous energy transfer from the electrode body 5 the water and the water bottom 1 1 is important.
- the sheath strands 7 of the electrode body 5 can also be connected by additional circumferential strands (not shown) to form a sheath grid.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013004074.3T DE112013004074A5 (de) | 2012-08-17 | 2013-08-16 | Vorrichtung zum Ableiten elektrischer Ströme |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50322/2012 | 2012-08-17 | ||
ATA50322/2012A AT513346B1 (de) | 2012-08-17 | 2012-08-17 | Vorrichtung zum Ableiten insbesondere von Stoßströmen in ein Erdreich |
ATA50072/2013 | 2013-01-31 | ||
ATA50072/2013A AT513908B1 (de) | 2013-01-31 | 2013-01-31 | Vorrichtung zum Ableiten von Stoßströmen in ein Gewässer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014026212A1 true WO2014026212A1 (de) | 2014-02-20 |
Family
ID=49170504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2013/050161 WO2014026212A1 (de) | 2012-08-17 | 2013-08-16 | Vorrichtung zum ableiten elektrischer ströme |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112013004074A5 (de) |
WO (1) | WO2014026212A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1243774A (en) * | 1916-10-30 | 1917-10-23 | Gerald W Soengen | Electric conducting ground-rod. |
FR2040694A6 (de) * | 1969-04-10 | 1971-01-22 | Graipin Raymond | |
US5461194A (en) * | 1992-04-20 | 1995-10-24 | Roop; David W. | Grounding cage apparatus |
US20020126436A1 (en) * | 2000-01-21 | 2002-09-12 | Christian Laferriere | Temporary lightening protection device for a sailboat |
-
2013
- 2013-08-16 DE DE112013004074.3T patent/DE112013004074A5/de not_active Withdrawn
- 2013-08-16 WO PCT/AT2013/050161 patent/WO2014026212A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1243774A (en) * | 1916-10-30 | 1917-10-23 | Gerald W Soengen | Electric conducting ground-rod. |
FR2040694A6 (de) * | 1969-04-10 | 1971-01-22 | Graipin Raymond | |
US5461194A (en) * | 1992-04-20 | 1995-10-24 | Roop; David W. | Grounding cage apparatus |
US20020126436A1 (en) * | 2000-01-21 | 2002-09-12 | Christian Laferriere | Temporary lightening protection device for a sailboat |
Also Published As
Publication number | Publication date |
---|---|
DE112013004074A5 (de) | 2015-04-30 |
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