RU2577034C1 - INTERPHASE SPACERS OF 35-1150 kV OVERHEAD POWER LINES - Google Patents

Abstract

FIELD: electric power engineering.

SUBSTANCE: invention relates to electric power industry, specifically phase-to-phase spacers of 35-1150 kV overhead power lines. Spacer comprises an insulating module (1), such as a fibreglass or composite rod or fibreglass or composite pipe. Module (1) on both sides ends, for example, with metal end sleeves (4, 5), which are mounted pivotally in one or more planes for fixing a connecting node (6, 7) to wires 8 of overhead power line. Connecting fasteners (6, 7) have elements, which enable to adjust their length. To ensure optimal electrical transmission characteristics of spacer, ratio of lengths of long building insulation module and connecting nodes can be selected from a certain ratio.

EFFECT: invention ensures high operational reliability, structural and easy production.

7 cl, 1 dwg

Description

The invention relates to the field of electric power, in particular to interfacial remote struts of overhead power lines with a voltage of 35 ÷ 1150 kV.

Known interfacial distance spacer for fixing the wires of an overhead power line, containing an insulating rod with terminators at its ends for securing the wires, made up of at least two elements interconnected, while the terminators are made with longitudinal channels on the inner surface of one from the sides of which the spikes are made, 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 live lines, which has led to a significant complication of the structural design of its insulating traction with terminators. Spacers mounted, as a rule, on overhead power lines that are not energized, are much simpler in design and the manufacturing process of their manufacture is much less costly and complicated.

An intra-phase insulating spacer is also known, comprising a housing connected to cone clamps for fastening components of a split wire, each of which is provided with support and pressure dies; the housing is made in the form of an axial rod of dielectric material and has tracking protection ribs, and the die clamps are rigidly fixed to the housing, and the pressure and support dies are connected using a bolted connection [2].

This known spacer does not provide the optimal ratio between the values of the building lengths of the attachment points to the overhead line wires to the values of the building lengths of the insulating casing, which is extremely important for achieving high electrical characteristics of interfacial distance spacers, especially if they are mounted on overhead transmission lines of extra-high and ultra-high voltage (over 330 kV).

The applicant set himself the specific task of developing an interphase distance spacer of overhead lines with a voltage of 35 ÷ 1150 kV, which would be characterized by simplicity of design, low manufacturing costs, ease of installation, reliability during operation, as well as high electrical (high voltage) characteristics in a wide voltage range overhead power lines (from high to ultra-high). The above positive technical result was achieved due to a new set of essential structural features of the proposed interfacial distance spacer of overhead power lines with a voltage of 35 ÷ 1150 kV, presented in the following claims: "interfacial remote spacer of overhead power lines with a voltage of 35 ÷ 1150 kV, consisting of a long insulation module, which is a fiberglass or composite rod or fiberglass or composite pipe, and having an outer the surface of the protective coating of organosilicon smooth rubber or organosilicon rubber with ribs of various shapes or alternating in different sequences of locations of smooth and ribbed sections, while the aforementioned long insulation module is made at its ends with at least two metal terminators, blind or articulated in one or several planes fixed to the connecting attachment points of the overhead line wires, having not adjustable in length or allowing gulirovat elements thereof length, wherein the ratio of a long insulating modulus values H ₁ construction lengths to half the sum of values construction lengths H ₂ and H ₃ of the connection module attachment points to the wire overhead line H _3/1/2 (H ₁ + H ₂₎ is selected within 5 ÷ 150; the connecting fastening nodes of the long insulating module are connected to the split wires of the overhead power line; connecting nodes of fastening to the wires of the overhead line are made in the form of dies with fasteners; connecting nodes of fastening to the wires of the overhead line are made in the form of boats with fasteners. "

The invention is illustrated by drawings, where in FIG. 1 is a perspective view of an interphase remote spacer of overhead power lines of 35 ÷ 1150 kV voltage made in accordance with the present invention.

The inventive interfacial distance spacer for overhead power lines with a voltage of 35 ÷ 1150 kV consists of a long insulating module 1. Module 1 - it can be, for example, a fiberglass or composite rod or a fiberglass or composite pipe, made from the outer surface with a protective coating of organosilicon smooth rubber or organosilicon rubber with ribs 2 of various shapes or alternating in different sequences of arrangement of smooth and ribbed sections 3, 2.

The module 1 on both sides ends with metal terminators 4, 5, which are attached blindly or pivotally in one or more planes to the connecting attachment points 6, 7 to the wires 8 of the overhead power line. The attachment points 6, 7 can have elements of constant (unregulated) length or these elements can be adjusted according to their building length. For optimum electrical high-voltage characteristics of the spacer ratio values construction lengths H ₁ long insulation module 1 to the half sum of values construction lengths H ₂ and H ₃ connecting assemblies 6, 7 fixing the module to the wire overhead line H _3/1/2 (H ₁ + H ₂ ) is selected within 5 ÷ 150.

The attachment points 6, 7 of the long insulation module 1 can also be connected directly to the split wires of the overhead power line.

The connecting attachment points 6, 7 to the wires 8 of the overhead line are in the form of dies with fasteners or in the form of boats 9 with fasteners 10 (Fig. 1).

The claimed strut is mounted in a standard widespread way using telescopic towers or from special trolleys moving along the wires of overhead power lines. For example, the wires 8 are embedded in the trenches of the boats 9 and the terminators 4, 5 of the insulation module 1 are attached by means of special fasteners 10 to the suspension of the boats 9 with the wires 8 of the overhead power line.

The proposed interphase remote spacer of overhead power lines with a voltage of 35 ÷ 1150 kV is distinguished by operational reliability, structural and technological simplicity, low cost and high electrical high-voltage characteristics; in the CJSC “MZVA” mass production of such struts has been established.

Information sources

[one]. Description of the invention to the copyright certificate “Interphase distance spacer for fixing the wires of an overhead power transmission line” No. 1746453, H02G 7/12, claimed 01.10.1990, published 07.07.1992.

[2]. Utility Model Patent “Interphase Isolating Spacer” No. 136930, H02G 7/12, filed July 17, 2013, published January 20, 2014.

[3]. Description of the invention to the copyright certificate "Interphase spacer" No. 1543492, H02G 7/12, claimed 15.06.1987, published 02.15.1990.

[four]. Description of the invention to the copyright certificate "Interphase strut" No. 1220039, H02G 7/12, claimed 06.21.1984, published 03.23.1986.

[5]. Description of the invention to the copyright certificate “Interphase insulating spacer” No. 1501206, Н02G 7/12, filed March 7, 1984, published August 15, 1989.

[6]. Description of the invention to the copyright certificate "High-voltage phase-to-phase spacer" No. 1443072, Н02G 7/12, claimed on January 9, 1984, published on December 7, 1988.

[7]. Description of the invention to the copyright certificate “Device for mounting an interphase spacer to the phase wires of an overhead power transmission line” No. 1376165, Н 02G 7/12, filed 04.06.1986, published 02.23.1988.

Claims (7)

1. An interfacial distance spacer of overhead power lines with a voltage of 35 ÷ 1150 kV, comprising an insulating module with at least two terminators made at its ends, pivotally in one or more planes fixed to the connecting attachment points of the overhead line wires having elements that allow you to adjust their length. 2. The spacer according to claim 1, in which the insulating module is made in the form of a fiberglass or composite rod or fiberglass or composite pipe. 3. The spacer according to claim 1, in which the terminators are made of metal. 4. The spacer according to claim 1, in which the connecting attachment points are connected to the wires of the overhead power line. 5. The spacer according to claim 1, in which the connecting attachment points are made in the form of dies with fasteners. 6. The spacer according to claim 1, in which the connecting attachment points are made in the form of boats with fasteners. 7. The strut according to claim 1, in which the ratio of the building lengths of the insulating module to half the sum of the building lengths of the connecting attachment points of the module to the wires of the overhead line is selected in the range from 5 to 150.

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