US2629765A - Double-acting lightning protector for electric installations - Google Patents

Double-acting lightning protector for electric installations Download PDF

Info

Publication number
US2629765A
US2629765A US270466A US27046652A US2629765A US 2629765 A US2629765 A US 2629765A US 270466 A US270466 A US 270466A US 27046652 A US27046652 A US 27046652A US 2629765 A US2629765 A US 2629765A
Authority
US
United States
Prior art keywords
line
web portion
side portions
depending
insulator
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.)
Expired - Lifetime
Application number
US270466A
Inventor
Cougnard Jerome
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
Application granted granted Critical
Publication of US2629765A publication Critical patent/US2629765A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus

Definitions

  • the present invention has for its object to provide lightning protection means for high-tension and other electric transmission lines and asso ciated devices.
  • the means according to the invention stop the ionized clouds constituting the lightning surge whirl which may arrive from either side of an insulator and they cause said clouds to be neutralized so that they cease to be conductive and are prevented from establishing short-circuits from parts under tension to ground through which the transmission power current might pass and cause a following current detrimental to the electric installations.
  • Fig. l is an elevation of the lightning protection means according to the invention, viewed in the direction of the transmission line;
  • Fig. 2 is a vertical section taken on line II-II of Fig. 1.
  • the lightning protection means shown in the drawing comprise an inverted U-shaped conducting plate A formed like a trough, the edges A of the trough being directed outwardly so as to enable it to receive and stop the ionized air accompanying the lightning surge.
  • the plate A is mounted by its upper web portion on an insulator B, by means of clips C, and carries at its top two upwardly directed screens E and E which are disposed in staggered relation to one another, as shown in Fig. 1.
  • On top of the plate A are further mounted cable-socl-zets G for attaching the cable F of the electric transmission line on either side of the insulator.
  • staggered screens E, E are equivalent with that of a single screen mounted across the top of the plate A. It lies therefore within the scope of the invention to use a single screen instead of the screens E, E.
  • the staggered screens as shown are more advantageous in that they make it possible to put the line cable F into place without the necessity of cutting the same.
  • a second U- or v-shaped plate H is mounted on the support I of the insulator and is connected to the ground T, at J, through the rod D which carries the insulator.
  • the plates A and H are disposed in such manner that the surfaces M'N' and MN" of the plate 1-1 are substantially parallel with the surfaces MN and M"'N"' of the plate A.
  • the width of the plate H is about less' than the width of the plate A (see Fig. 1), so that 2 the ionized cloud can never short-circuit the surfaces MN, M'N' and M"N", M"'N"'.
  • the distance between the plates A and H dcpends on the voltage of the line is generally determined in such manner that the striking voltage between the plates A and H is about 20% less than the striking test voltage of the line-associated devices to be protected.
  • the lightning protection means according to the invention is always placed in the open.
  • the conducting cable F of the transmission line must always arrive substantially perpendicularly to the surface MN of the plate A which forms a shield.
  • the apparatus comprises no resistance, no capacity, no selfinduction and no closed space in which air might be confined.
  • the shield formed by the plate A and completed by the screens E, E stops the lightning surge which is received in the trough of the plates where it is neutralized, the ionized atoms charging themselves with electrons. Being neutralized, the ionized air becomes insulating can no more initiate a leakage of the line power current to the ground and produce a current surge which would be deadly for the line-associated devices to be protected.
  • the plate H drains to the ground the electromagnetic waves resulting from the neutralization of the whirl cloud, without initiating a following current.
  • the apparatus thus neutralizes the lightning surge, prevents the striking over of the line current to the ground and avoids the burning out of the line-associated devices to be protected.
  • an insulator In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of 3 said depending side portions, said depending sidc portions and said screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line.
  • an insulator In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto, the line to be protected, two upwardly extending screens mounted on said web portion, said screens being disposed in staggered relation to one another, and. a grounded plate facing the inner side of each of said depending side portions, said depending side portions and said screens being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line...
  • a sup port In lightning protection means for electric transmission lines and associated devices, a sup port, an insulator mounted on said support, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said Web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded U-shaped conducting plate mounted on.
  • said support having two upwardly extending side portions, one of said upwardly extending side portions facing the inner side of one of said depending side portions and the other of said upwardly extending side portions facing the inner side of the other of said depending side portions, said depending side portions and said. screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line.
  • an insulator an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of said depending side portions, said grounded conducting plates being substantially parallel with said depending. side portions, and said depending side portions and said screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side; along the line,
  • an insulator In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web. portion. mounted, on said insulator, and two. side portions. depending from said web portion, attachment means on said. Web portion for attaching thereto the line to be protected, at least one. upwardly extending screen mounted on said web portion and a grounded.
  • said grounded conducting plates being of smaller width than, said inverted. U-snaped. conducting plate, and said depending. side portions. and said screen being disposed, in substantially right-angular cross relation to, said line so as to stop lightning, surges arriving from either side along the line.
  • lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of said depending side portions, said depending side portions and said screen being disposed in. substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line, and the distance between said grounded conducting plates and said inverted U-shaped conducting plate being such that the striking voltage therebetween is smaller than the striking test voltage of the line-associated devices to be protected.

Description

Feb. 24, 1953 J COUGNARD 2,629,765
DOUBLE-ACTING LIGHTNING PROTECTOR FOR ELECTRIC INSTALLATIONS Filed Feb. 7. 1952 Zz' 1 I g! l E E! I '1 at i J l I fl l I I E i 1 i i l V i i! Inventor Jemme (bag/Zara Patented Feb. 24, 1953 DOUBLE-ACTING LIGHTNING PROTECTOR FOR ELECTRIC INSTALLATIONS J rome Cougnard, Nanterre, France Application February 7, 1952, Serial No. 270,466
In France March 13, 1951 7 Claims. (Cl. 174-140) The present invention has for its object to provide lightning protection means for high-tension and other electric transmission lines and asso ciated devices.
The means according to the invention stop the ionized clouds constituting the lightning surge whirl which may arrive from either side of an insulator and they cause said clouds to be neutralized so that they cease to be conductive and are prevented from establishing short-circuits from parts under tension to ground through which the transmission power current might pass and cause a following current detrimental to the electric installations.
As an example, and for purposes of illustration only, a practical embodiment of the invention is shown in the annexed drawing wherein:
Fig. l is an elevation of the lightning protection means according to the invention, viewed in the direction of the transmission line;
Fig. 2 is a vertical section taken on line II-II of Fig. 1.
The lightning protection means shown in the drawing comprise an inverted U-shaped conducting plate A formed like a trough, the edges A of the trough being directed outwardly so as to enable it to receive and stop the ionized air accompanying the lightning surge. The plate A is mounted by its upper web portion on an insulator B, by means of clips C, and carries at its top two upwardly directed screens E and E which are disposed in staggered relation to one another, as shown in Fig. 1. On top of the plate A are further mounted cable-socl-zets G for attaching the cable F of the electric transmission line on either side of the insulator.
The combined action of the staggered screens E, E is equivalent with that of a single screen mounted across the top of the plate A. It lies therefore within the scope of the invention to use a single screen instead of the screens E, E. However, the staggered screens as shown are more advantageous in that they make it possible to put the line cable F into place without the necessity of cutting the same.
A second U- or v-shaped plate H is mounted on the support I of the insulator and is connected to the ground T, at J, through the rod D which carries the insulator. The plates A and H are disposed in such manner that the surfaces M'N' and MN" of the plate 1-1 are substantially parallel with the surfaces MN and M"'N"' of the plate A.
The width of the plate H is about less' than the width of the plate A (see Fig. 1), so that 2 the ionized cloud can never short-circuit the surfaces MN, M'N' and M"N", M"'N"'.
The distance between the plates A and H dcpends on the voltage of the line. This distance is generally determined in such manner that the striking voltage between the plates A and H is about 20% less than the striking test voltage of the line-associated devices to be protected.
The lightning protection means according to the invention is always placed in the open. The conducting cable F of the transmission line must always arrive substantially perpendicularly to the surface MN of the plate A which forms a shield.
The apparatus comprises no resistance, no capacity, no selfinduction and no closed space in which air might be confined.
The apparatus shown and described operates as follows:
When the apparatus is reached by a lightning surge in the shape of a whirling ionized cloud advancing along the line F either in the direction of the arrow f or in the direction of the ar row f1, the shield formed by the plate A and completed by the screens E, E stops the lightning surge which is received in the trough of the plates where it is neutralized, the ionized atoms charging themselves with electrons. Being neutralized, the ionized air becomes insulating can no more initiate a leakage of the line power current to the ground and produce a current surge which would be deadly for the line-associated devices to be protected. The plate H drains to the ground the electromagnetic waves resulting from the neutralization of the whirl cloud, without initiating a following current.
The apparatus thus neutralizes the lightning surge, prevents the striking over of the line current to the ground and avoids the burning out of the line-associated devices to be protected.
It will be understood that modifications of degree are possible in the size, shape and arrange ment of parts without departing from the spirit of the invention or the scope of the appended claims.
I claim:
1. In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of 3 said depending side portions, said depending sidc portions and said screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line.
2. In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto, the line to be protected, two upwardly extending screens mounted on said web portion, said screens being disposed in staggered relation to one another, and. a grounded plate facing the inner side of each of said depending side portions, said depending side portions and said screens being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line...
3. In lightning. protection, means for electric transmission lines. and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, said conductingv plate being. formed like a trough having its concave side directed outwardly, attachment means on said web portion.v for attaching. thereto the line to be protested, at least one upwardly extending screen mounted on. said web portion and a grounded conducting plate facing the inner side of each of said depending side portions, said depending side portions and said screen being disposed in substantially right-angular cross relation. to said line so as to stop lightning surges arriving from either side along the line.
4. In lightning protection means for electric transmission lines and associated devices, a sup port, an insulator mounted on said support, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said Web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded U-shaped conducting plate mounted on. said support and having two upwardly extending side portions, one of said upwardly extending side portions facing the inner side of one of said depending side portions and the other of said upwardly extending side portions facing the inner side of the other of said depending side portions, said depending side portions and said. screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line.
5. In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of said depending side portions, said grounded conducting plates being substantially parallel with said depending. side portions, and said depending side portions and said screen being disposed in substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side; along the line,
6. In lightning protection means for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web. portion. mounted, on said insulator, and two. side portions. depending from said web portion, attachment means on said. Web portion for attaching thereto the line to be protected, at least one. upwardly extending screen mounted on said web portion and a grounded.
conducting plate'facing the. inner side of each of said depending side portions, said grounded conducting plates being of smaller width than, said inverted. U-snaped. conducting plate, and said depending. side portions. and said screen being disposed, in substantially right-angular cross relation to, said line so as to stop lightning, surges arriving from either side along the line.
'i. In lightning protection means. for electric transmission lines and associated devices, an insulator, an inverted U-shaped conducting plate having an upper web portion mounted on said insulator and two side portions depending from said web portion, attachment means on said web portion for attaching thereto the line to be protected, at least one upwardly extending screen mounted on said web portion and a grounded conducting plate facing the inner side of each of said depending side portions, said depending side portions and said screen being disposed in. substantially right-angular cross relation to said line so as to stop lightning surges arriving from either side along the line, and the distance between said grounded conducting plates and said inverted U-shaped conducting plate being such that the striking voltage therebetween is smaller than the striking test voltage of the line-associated devices to be protected.
JEROME COUGNARD.
No references cited.
US270466A 1951-03-13 1952-02-07 Double-acting lightning protector for electric installations Expired - Lifetime US2629765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2629765X 1951-03-13

Publications (1)

Publication Number Publication Date
US2629765A true US2629765A (en) 1953-02-24

Family

ID=9687345

Family Applications (1)

Application Number Title Priority Date Filing Date
US270466A Expired - Lifetime US2629765A (en) 1951-03-13 1952-02-07 Double-acting lightning protector for electric installations

Country Status (1)

Country Link
US (1) US2629765A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914602A (en) * 1955-04-30 1959-11-24 Cougnard Jerome Double acting deionizing device for aerial electric lines
US3668458A (en) * 1969-06-09 1972-06-06 Meidensha Electric Mfg Co Ltd Explosively actuated ground interrupting device
US3924058A (en) * 1974-06-26 1975-12-02 Rosario Dube Deionizing device for aerial electric lines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914602A (en) * 1955-04-30 1959-11-24 Cougnard Jerome Double acting deionizing device for aerial electric lines
US3668458A (en) * 1969-06-09 1972-06-06 Meidensha Electric Mfg Co Ltd Explosively actuated ground interrupting device
US3924058A (en) * 1974-06-26 1975-12-02 Rosario Dube Deionizing device for aerial electric lines

Similar Documents

Publication Publication Date Title
US4216518A (en) Capacitively coupled static eliminator with high voltage shield
McElroy et al. Propagation of switching-surge wave-fronts on EHV transmission lines
US2144872A (en) Insulator
US2629765A (en) Double-acting lightning protector for electric installations
US2151559A (en) Lightning arrester
US3492534A (en) Fuse spark gap device for protection against line transient voltages
US2495154A (en) Lightning arrester
US2288428A (en) Device for protecting electrical apparatus from voltage surges
US2538177A (en) Excess-voltage arrester
Gillies et al. Methods for reducing induced voltages in secondary circuits
Larmor On protection from lightning and the range of protection afforded by lightning rods
Armstrong et al. Impulse studies on distribution line construction
US2517087A (en) Apparatus for the protection of high-voltage electric installations against high-frequency atmospheric discharges
US2805355A (en) Spark gap device
US1928820A (en) Wood structure protective means
US2234998A (en) Electrical shield
US20230083726A1 (en) Variable radiofrequencies electromagnetic compensating device for protecting wind towers blades or other mobile or static structures
US3633068A (en) Static discharger with ionization bypass
US2716148A (en) Ground stakes for electrical conducting cables
GB1278947A (en) Noise free static discharger
US2549853A (en) Lightning protection for transmission lines
US2095311A (en) Arc protection means
US1869661A (en) Lightning protection system and method
CN207973048U (en) A kind of telescopic lightning arrester of floating roof tank
Wood 220-Kv. transmission transients and flashovers