SU1657848A1 - Light guard for high-voltage aerial power transmission line - Google Patents

Abstract

The invention relates to a process engineer. The purpose of the invention is to increase the reliability and efficiency of the light barrier line in the area between the supports. The presence of corona elements attached to the wires of the line allows to create discharge corners along the line, which combine a bright luminescence of 6 hp.

Description

The invention relates to electrical engineering, in particular to a light-generating device for an overhead transmission line.

The purpose of the invention is to improve the reliability and efficiency of light barrier lines in the area between the supports.

Figure 1 shows an overhead transmission line with corona elements installed on its wires; FIGS. 2 and 3 show corona elements in the form of volumetric bodies made of straight wires or pointed rods, variants; 4 and 5 are the same, in the form of bulk bodies of wires bent in different ways, variants; Fig. 6 shows a wire of a line with a corona-forming element mounted on it in the form of radially diverging pointed rods, a cross section.

On the overhead transmission line containing the supports 1 and the current-carrying phase wires 2G along the length of the wires 2 between the supports are installed sources of light radiation, made in the form of corona elements 3 (Fig. 1)

The corona elements are made in the form of volumetric bodies from straight or curved segments of metal wire 4 fixed on the wire 2 by means of a press 5, which can be made in the form of a yoke, wire stitch or other known construction, from a conductive material.

Bulk bodies of metal wire can be a bundle of wire or a length of barbed wire fixed on the wire 2 (Figures 2 and 3). The bulk body can be made in the form of a spiral-bent wire covering the wire 2 (figure 5). as well as in the form of rings of wire connected to wire 2 by means of radial rods (Fig. 4) and in other different ways.

In the case of corona elements in the form of pointed radial

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rods, it is advisable to orient the rods in the direction of the adjacent phase conductors of the line or in the direction of the earth to create the maximum strength of the non-uniform electric field,

Corrosion-resistant and corona-resistant metals, such as stainless steel, copper, etc., should be used as materials for corona elements. in the form of a wire with a diameter of 1-3 mm.

The installation of the corona elements on the wires of the high-voltage line can be carried out during the installation of the line itself, which greatly simplifies the work, and on the existing line - with the help of telescopic towers.

When passing through the phase conductors of the high-voltage electric current line and on the corona elements 3, a local corona discharge occurs, accompanied by luminescence. This luminescence, occurring along the length of the wires, provides for marking of wires in conditions of poor visibility and is a warning sign, due to the good visual visibility of which the possibility of collision with vehicle wires, such as gliders, hang gliders, etc., is excluded.

The glow of the corona elements is clearly distinguishable at night and at twilight at a distance of 100-300 m. Therefore, the light corona elements are detected by the high-voltage line at a distance sufficient to reach them.

The frequency of the elements on the wires can be taken equal to 5-8 m. The elements located on the other phase wires can be shifted along the wire relative to each other.

Contamination of corona elements over time, for example, as a result of adhering of small insects, organic particles and others, does not lead to deterioration of coronation. High humidity, i.e. the presence of rain, snow, fog, enhances the corona and thereby improves the protection of wires.

The installation of corona elements on the high-voltage lines does not lead to large energy losses and radio interference, since the transmission lines are equipped with corona elements only on limited sections of the line, mainly at river crossings or other obstacles, near aerodromes, in places where parachutists train. etc. In addition, the magnitude of losses from corona line when using the described corona elements will be a fraction of a percent of the total losses of electricity in the line.

The proposed device makes it possible to reduce the likelihood of a collision of a vehicle, such as a glider, hang glider or sports plane, with wires of a high voltage power line, the probability of which, especially at dusk, at night, and also in fog or rain conditions, is quite high. In addition, the safety of training military and sports parachutists is increased. Damage to line damage due to such a collision is also reduced.

This technical solution is easy to implement, provides light barrier wires for a long time (5-10 years). Corona elements are simple in design, available in manufacturing. The cost of equipping the lines is mainly determined by the cost of delivering and installing the corona elements.

Claims (2)

1. A device for creating a light-proofing of a high-voltage overhead transmission line, containing sources of light emission, mounted on the elements of a high-voltage overhead transmission line and electrically connected to the wires of the line, characterized in that. In order to increase the reliability and efficiency of the light barrier on the section between the supports, the sources of light emission are made in the form of corona elements discretely mounted on wires along the specified portion of the transmission line. 2. The device according to claim 1, characterized in that the corona elements mounted on adjacent phase conductors are offset from each other along the transmission line. r / Xr frj FIG. I Fig.Z  edactor N. Rogulich Compiled by E. Ushakova Tehred M. Morgenthal fzg.5 FIG. 6 Proofreader S. Cherni