RU2692705C1 - INTERPHASE REMOTE STRUT OF OVERHEAD TRANSMISSION LINES WITH WIRES IN SPLIT PHASE WITH VOLTAGE OF 220-1,150 kV - Google Patents

Abstract

FIELD: power engineering.SUBSTANCE: invention relates to the field of electric power industry, in particular to the interphase remote spacers of overhead transmission lines with wires in a split phase with voltage of 220÷1,150 kV. Spacer consists of insulating module 1 with end terminals 2, 3 fixed to connection units of attachment to wires 6, 7 or ropes of split phases of overhead transmission lines and protective screens 8, 9. Connection units of attachment consists of housing 10, 11, at ends of which are fixed supporting clamps 12, 13 with wires 6, 7 of the split phase, and rocker 14, 15, pivotally mounted on housing 10, 11 and connected through intermediate elements 4, 5 end terminals 2, 3 of insulation module 1. One of the connecting attachment units is designed so that to enable fastening to two wires 6, 7 of the split phase (the remaining wires of the split phase are fixed by spacers 17).EFFECT: invention simplifies and reduces the cost of the device, increases efficiency and operational reliability of work, and also provides conditions for work of the spacer with two or more components (wires) in the split phase.1 cl, 2 dwg

Description

The invention relates to the field of electric power industry, in particular to interphase distance struts of overhead transmission lines with wires in the split phase with voltage of 220 ÷ 1150 kV.

A known interphase spacer for fixing the wires of an overhead transmission line, containing insulating traction with end fittings at its ends for fastening wires, is made of a composite of at least two elements interconnected, with the end fittings made with longitudinal channels on the inner surface of one the sides of which are made spikes, and the second side is made with a through hole with a bevel and an inclined protrusion [1].

This spacer is designed for installation on lines that are under voltage, which has led to a significant complication of the structural implementation of its insulating thrust with end fittings. Struts, mounted, as a rule, on non-live overhead power lines, are much simpler in design and the technological process of their manufacture is significantly less expensive and complicated.

An intraphase insulating strut is also known, comprising a housing connected to the die clamps for fastening the components of the split wire, each of which is provided with supporting and pressing dies; the body is made in the form of an axial rod of a dielectric material and has tracking protective ribs, and the die clips are rigidly fixed on the body, with the pressure and support dies connected by means of a bolt joint [2].

In this well-known strut, there is no optimal relationship between the values of the construction lengths of attachment points to overhead wires and the values of the building lengths of the insulating body, which is extremely important for achieving high electrical characteristics of the interphase distance struts, especially if they are mounted on superhigh-power and ultra-high voltage power lines (over 330 kV).

The closest technical solution in relation to the proposed is an interphase distance strut of overhead transmission lines with wires in a split phase voltage of 220-1150 kV, containing an insulating module with at least two terminations made at its ends, pivotally in one or more planes or by means of intermediate elements to connecting attachment points to wires or cables of overhead transmission lines, and at least one protective shield, [3].

A significant disadvantage of this interphase distance spacer is the lack of operational reliability, especially in mounting variants of the spacer with splitting the line phase into more than two components (wires) in the split phase, since such a construction may violate the conditions of rigid fixation of the split phase wires in space, due to the eccentricity of the wires of the split phase, which significantly reduces the overall performance of the spacer as a whole, as a device providing reliable v fixing wires split phase in various operating conditions.

The applicant set himself the specific task of developing an interphase distance strut of overhead lines with wires in the split phase with voltage of 220-1150 kV, characterized by high operational reliability in mounting options of the strut with splitting the line phase from two components (wires) and higher by performing one of the connecting attachment points with the design for fixing directly to the two wires of the split phase and the optimal location of its hinge inside the split phase, which eliminates the eccentre versity wire and hence improves the efficiency of the device as a spacer, rigidly fixing the split phase conductors in space. The above positive technical result was achieved due to a new set of essential design features of the proposed interphase distance strut of overhead power lines with wires in the split phase with voltage of 220-1150 kV, presented in the following claims: “phase-to-distance distance strut of overhead power lines with wires in the split phase with voltage 220-1150 kV, containing an insulating module with at least two terminations made at its ends and, pivotally in one or several planes fixed directly or by means of intermediate elements to the attachment points of attachment to the wires or cables of overhead power lines, and at least one protective shield; The insulation module is connected to at least one mounting attachment unit by means of fasteners by means of a hinge, the axis of which with three or more wires in the split phase runs in close proximity to the center of the circle described along the centers of the wires of the split phase at a distance of no more than 150 mm from it, and with two wires in a split phase, the axis of the hinge passes near a straight line passing through the centers of the wires at a distance of no more than 150 mm from it, and on each connecting attachment point there is a closure captured by at least one restrictor hinge their displacement; Each attachment assembly consists of a body, at the ends of which there are support clamps with wires of the split phase, and a rocker arm hinged to the body and connected through end-pieces to the insulating module ”.

The invention is illustrated by drawings, where in FIG. 1 shows a general view of the interfacial spacer of overhead transmission lines with three wires (components) in a split phase with a voltage of 220-1150 kV, made in accordance with the present invention; in fig. 2 is the same as in FIG. 1, an option when one of the connecting nodes is attached directly to the two wires when the phase splits into three wires (components).

The invented interfacial spacer of overhead power lines with wires in a split phase with voltage of 220-1150 kV consists of an insulating module 1 with two ends 2, 3 made at its ends, pivotally in one or several planes fixed directly or by means of intermediate elements 4, 5 to the connecting ones attachments to wires 6, 7 or cables of the split phases of overhead power lines and protective shields 8, 9. Each attachment assembly consists of a housing 10 and 11 at the ends of Secondly, the supporting clips 12, 13 with wires 6, 7 of the split phase are fixed, and the rocker arms 14 and 15 pivotally (hinge 16) fixed on the housing 10 and 11 and connected through the intermediate elements 4.5 with the end plates 2, 3 of the insulation module 1.

The horizontal axis 18 of the hinge 16 with three or more wires in the split phase passes in the immediate vicinity of the center 19 of the circle 20 described by the centers of fixing the wires 6, 7 of the split phase at a distance of no more than 150 mm from it (Fig. 1). With two wires 6, 7 in the split phase, the axis 21 of the hinge 16 passes near the straight 22 passing through the centers of the wires 6, 7 of the split phase at a distance of no more than 150 mm from it.

At each connecting attachment point, a stop 23 of their articulated movement is fixed.

The invention works as follows.

The proposed interphase distance strut of overhead power lines with wires in a split phase with a voltage of 220–1150 kV limits the amplitude of oscillations and ensures that the insulation distances between wires and wires of split phases of overhead power lines are maintained. Insulating module 1 spacers with their end fittings 2, 3 through intermediate elements 4, 5 or directly attached to the connecting attachment points to the wires (cables) 6, 7 of the split phases of overhead power lines. The design of the mounting attachment points allows you to significantly simplify and reduce the cost of the strut by fastening to at least two wires of the split phase, eliminating complex expensive supporting clamps, since the remaining wires of the split phase can be attached with simple intraphase rod struts 17. Due to the optimal location inside the split phase the hinge 16 of attachment points, which consists in the fact that the axis of the hinge 16 passes in the immediate vicinity of the center circumferentially This method described by the centers of fastening the wires of the split phase or near a straight line passing through the centers of the wires of the split phase, at a distance of no more than 150 mm, a significant increase in the efficiency and operational reliability of the spacer is achieved, since exceeding the aforementioned defined limits of the arrangement of the hinge distances 16 results in eccentricity wires themselves and the entire split phase as a whole. Achieved by the proposed design features provide the conditions for the work of the spacer with two or more components (wires) in the split phase as a device that rigidly fixes the split phase wire in space regardless of external influences.

Information sources:

[one]. Description of the invention to the author's certificate "Interfacing distance strut for fixing the wires of an overhead transmission line" No. 1746453, H02G 7/12, declared 10/01/1990, published 07/07/1992.

[2]. The description of the utility model patent “Intraphase insulating strut” No. 136930, H02G 7/12, announced on July 17, 2013, published January 20, 2014.

[3]. Description to the patent for the invention "Interphase distance strut of overhead power lines with voltage of 35-1150 kV" No. 2577034, H02G 7/12, announced on 25.11.2014, published on 10.03.2016.

[four]. Description of the invention to the author's certificate "Interfacial strut" No. 1543492, H02G 7/12, declared 15.06.1987, published 15.02.1990.

[five]. Description of the invention to the author's certificate "Interfacial strut" №1220039, H02G 7/12, declared 06/21/1984, published 03/23/1986.

[6]. Description of the invention to the author's certificate "Interphase insulating strut" №1501206, H02G 7/12, declared 07.03.1984, published 08/15/1989.

[7]. Description of the invention to the author's certificate "High-voltage interphase spacer" №1443072, H02G 7/12, declared 09/01/1984, published 12/07/1988.

[eight]. Description of the invention to the author's certificate "Device for fastening the interphase spacer to the wires of the phases of an overhead transmission line" No. 1376165, H02G 7/12, declared 04/06/1986, published 02/23/1988.

Claims (2)

1. Interphase spacer of overhead power lines with wires in a split phase voltage of 220-1150 kV, containing an insulating module with at least two terminators made at its ends, pivotally in one or several planes fixed directly or by means of intermediate elements to connecting nodes fastening to wires or cables of overhead power lines, and at least one protective shield, characterized in that the insulation module with the help of fasteners connect with at least one connecting attachment by means of a hinge, the axis of which with three or more wires in the split phase runs in close proximity to the center of the circle described along the centers of the wires of the split phase at a distance of no more than 150 mm from it, and with two wires in the split phase the axis of the hinge passes near a straight line passing through the centers of the wires at a distance of no more than 150 mm from it, with at least one limiter of their hinge wire fixed on each connecting attachment point emescheniya. 2. The strut of claim. 1, characterized in that each attachment assembly consists of a body, at the ends of which are mounted supporting clamps with wires of the split phase, and a rocker arm hinged to the body and connected through the intermediate elements to the terminal pieces of the insulation module.

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