WO2003019585A1 - Dissipateur d'impulsions de foudroiement - Google Patents

Dissipateur d'impulsions de foudroiement Download PDF

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Publication number
WO2003019585A1
WO2003019585A1 PCT/ZA2001/000130 ZA0100130W WO03019585A1 WO 2003019585 A1 WO2003019585 A1 WO 2003019585A1 ZA 0100130 W ZA0100130 W ZA 0100130W WO 03019585 A1 WO03019585 A1 WO 03019585A1
Authority
WO
WIPO (PCT)
Prior art keywords
dissipator
pulse
coil
along
magnetic field
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.)
Ceased
Application number
PCT/ZA2001/000130
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English (en)
Inventor
Alan Dennis Cloete
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/ZA2001/000130 priority Critical patent/WO2003019585A1/fr
Publication of WO2003019585A1 publication Critical patent/WO2003019585A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/202—Electromagnets for high magnetic field strength

Definitions

  • This invention relates to an energy pulse dissipator for dissipating a large pulse of electrical energy as moving along a conductor. Although not so limitsd the invention finds useful application in dissipating a lightning pulse as flowing along a conventional electricity transmission line.
  • an energy pulse dissipator for dissipating a large pulse of electrical energy as moving along a conductor comprising
  • an appropriate plurality of electro-magnetic fashion magnetic field generating configurations being movably arranged relative to one another even if in response to only inherent configuration movement though biased to return to a rest condition, while being set up to generate inter-active magnetic fields, even in the appropriate case being fractionally out of phase, at least once the dissipator as inter-spaced along an electricity conducting line is subjected to an energy pulse, the configurations further being of suitable make-up to, to an adequate extent for limiting the problem creating effect of such pulse down the line, cause the dissipation of pulse energy, on passing of such pulse along the dissipator, in response to a rapid energy dissipating movement of the configurations resulting from the magnetic fields as instantaneously generated in response to the progression of such pulse along the dissipator once, as operatively inter-spaced, subjected thereto.
  • the configurations may be arranged to result in a to and fro movement relative to one another once subjected to an energy pulse thus being adequately spaced to enable performance of this moving action.
  • the configurations may preferably be set-up to create magnetic fields of opposing polarities.
  • the configurations may be electrically serially interconnected to one another resulting in the magnetic fields being fractionally out of phase.
  • Each configuration may be arranged about a centre line.
  • the configurations may preferably be movable and biased owing to being of resilient character.
  • Each configuration my be in the form of at least one conductor of resilient material extending convolutely about its centre line resulting in the dissipation of energy in response to ' expansive contraction of the conductors.
  • the conductors may preferably be of a material having the same current carrying characteristics and ability as the conventional line material.
  • the configurations may be in the form of coils.
  • the direction of convolution of successive coils may be opposite to one another for creating opposing adjacent magnetic fields and where the dissipator is intended to be used in conjunction with conventional open air current conducting lines, the number of turns per coil is in the order of between six and twelve
  • the pitch of the coils may be in the order of one mm. At least one of the following parameters may apply to the dissipator
  • dissipator upstream and downstream connecting bridges extending from generally the centres of the coils along extensions of generally their centre lines for connection of the coils along a power line at a spacing between the coils and the connecting positions of generally in the order of 100mm.
  • the pulse may be caused to pass along equipment incorporating the recoverable displaceable facility in the form of an appropriately interspaced dissipator as described above. (4) BRIEF DESCRIPTION OF THE DRAWING
  • Figure 1 shows an energy dissipator, according to the invention, in the relaxed condition side elevation
  • Figure 2 shows the dissipator of figure 1 as viewed in the direction of arrow A in figure 1 ,
  • Figure 3 shows the magnetic field of the dissipator once operatively interspaced, at the time of pulse passage there along, and
  • Figure 4 diagrammatically shows the dissipator as operative located along a conductor.
  • an energy dissipator according to the invention, is generally indicated by reference numeral 10.
  • the dissipator 10 comprises two inherently resilient electro-magnetic fashion magnetic field generating configurations to and fro movable arranged with respect to one another in response to the generation of magnetic fields there along while biased to return to a rest condition in the form of two serially arranged coils 12 and 14 of conductive material.
  • Each coil 12, 14 extends at least generally symmetrically about its centre line 16 and 18 respectively.
  • the coils 12, 14 are interconnected by a connecting conducter 20 positioned co-axially with respect to the centre lines 16 and 18 when the dissipator 10 is viewed in its neutral condition as shown in figure 1.
  • the centre lines 16 and 18 will not necessarily extend axially. Even so the centre lines 16, 18 will still extend along a curve with the conductor 20 extending along the curvature
  • the coils 12 and 14 and the conducter 20 are in fact integrally formed from one length of conductor
  • the dissipator 10 For use of the dissipator 10 to dissipate a large electrical pulse, as in particular created by lightning, as flowing along a conventional high tension line normally at 22 000 Volts or 11 000 Volts or even a transformed down tension of 380 Volts, it has been found that the dissipator 10 must advantageously be of the same material as that of the line le a copper or aluminium based material It has also been established that a rest position pitch 28 between the turns of the coils 12, 14, as shown in figure 1 , generally equal the thickness of the coil wire and a number of turns of between six and twelve per coil 12, 14 promote desirable dissipating characte ⁇ sics The same applies to a connecting conductor 20 length and a coil diameter 30 of in the order of 75mm and end connecting lengths 32 of in the order of 100mm
  • the dissipator 10 as specifically described is thus useful in dissipating a large electrical pulse as superimposed on a tranmission line
  • a large electrical pulse running along a line enters the dissipator 10 from one side and passes rapidly there along While passing the first coil 12, 14 a magnetic field is instantaneously generated as shown in figure 3 Almost simultaneously a magnetic field is also generated in the subsequent coil 14, 12 with the fields so created forming opposite poles in the zone 26
  • the effect of the magnetic fields are to cause an immediate and at least substantial displacement in the coils 12, 14 which, amongst other, result in their full contraction at a rate causing a large release of energy.
  • the pulse becomes dissipated to an adequate extent in response to the movement of the coils 12, 14 causing the release of energy to result in the resultant extent of pulse, if any, being too small to affect equipment down the line.
  • the dissipator 10 is usefully employed to dissipate a lightning pulse caused by a lightning strike of a line.
  • the dissipator 10 is conveniently intespaced along the line between an isolator cup 34 and the conventional lightning arrestor 36.
  • a pulse running along a line in response to the lightning strike is appropriately dissipated by the dissipator 10 to result in the arrestor 36 remaining intact. Line downtime is thus reduced in comparison with what it would have been as a qualified person must normally be called in to reset the arrestor 36.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un courant circulant dans une bobine générant un champ magnétique changeant la polarité magnétique de la bobine tous les 1/50 de seconde. Le champ magnétique généré par le courant circulant dans la bobine change également tous les 1/50 de seconde. En même temps, le champ magnétique autour de chaque spire de chaque bobine change également. Selon la loi de Lenz, le champ magnétique généré dans une bobine réagit toujours contre la source d'alimentation générant le champ magnétique dans la bobine. Lorsque la bobine est installée et qu'elle est alimentée avec, par exemple, 11KV, le champ magnétique de la bobine est activé avec un flux constant de 11KV. Lorsque la foudre s'abat sur une ligne aérienne et que la pointe d'impulsion atteint la ligne aérienne en direction du transformateur par l'intermédiaire de la bobine et qu'elle frappe la bobine, les deux côtés sont alors activés avec une puissance supérieure à 11FV, par exemple 1 000 000 de volts, produisant deux champs électriques opposés. La pointe d'impulsion de la foudre est alors absorbée, dissipée, neutralisée et éliminée. Tout ceci se produit en 1/50 de seconde. La puissance revient ensuite à la normale (11 KV). La pointe d'impulsion de la foudre n'est pas réorientée, mais complètement neutralisée.
PCT/ZA2001/000130 2001-08-30 2001-08-30 Dissipateur d'impulsions de foudroiement Ceased WO2003019585A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ZA2001/000130 WO2003019585A1 (fr) 2001-08-30 2001-08-30 Dissipateur d'impulsions de foudroiement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ZA2001/000130 WO2003019585A1 (fr) 2001-08-30 2001-08-30 Dissipateur d'impulsions de foudroiement

Publications (1)

Publication Number Publication Date
WO2003019585A1 true WO2003019585A1 (fr) 2003-03-06

Family

ID=25560130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2001/000130 Ceased WO2003019585A1 (fr) 2001-08-30 2001-08-30 Dissipateur d'impulsions de foudroiement

Country Status (1)

Country Link
WO (1) WO2003019585A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA993117B (en) * 1999-05-05 1999-12-29 Allan Dennis Cloete Lightning strike dissipator.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA993117B (en) * 1999-05-05 1999-12-29 Allan Dennis Cloete Lightning strike dissipator.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 2000-183411, XP002193528, ALLAN DENNIS CLOETE: "lightning strike dissipator" *

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