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Three-phase integrated gas-insulated transmission line

A transmission line, gas insulation technology, applied in the direction of busbar/line layout, electrical components, cable installation, etc., can solve problems such as affecting the safe operation of busbars, large investment in thermal compensation devices, inability to absorb deformation, etc., to reduce the number of sealing surfaces , The effect of saving project cost and reducing the number of flange connections

Active Publication Date: 2017-05-24
江苏安靠智能输电工程科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of casting elbows and two right-angle assemblies cannot absorb the deformation caused by thermal expansion and contraction during the operation of the equipment in the line. It is necessary to add a special thermal compensation device, and the structure is more complicated.
Moreover, the thermal compensation device has a large investment, short life, and poor reliability, which seriously affects the safe operation of the entire busbar.

Method used

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  • Three-phase integrated gas-insulated transmission line
  • Three-phase integrated gas-insulated transmission line
  • Three-phase integrated gas-insulated transmission line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 10 As shown, a three-phase communal rigid gas insulated transmission line includes a straight section unit 2 and a compensation unit 4, each straight section unit 2 includes a shell filled with insulating gas and three straight conductors arranged inside the shell. The compensation unit includes an intermediate housing 42, two bellows 41 with flanges, a short flow piece 43, a limit piece 44, an insulating support and three straight conductors. The number of straight section units and compensation units is determined according to construction needs. There may be multiple straight section units and compensation units. The number and arrangement sequence of the combination are determined according to the terrain of the transmission line laying or the need to add ports. That is, n (n≥1) straight section units and m (m≥1) compensation units can be set, and in use, n straight section units 2 and m compensation units 4 are connected in pairs by flanges. The co...

Embodiment 2

[0046] Such as figure 1 As shown, a three-phase communal rigid gas insulated transmission line includes a straight section unit 2 , a branch unit 1 , a corner unit 3 , a compensation unit 4 and a T-shaped unit 5 . The right port 55 of the T-shaped unit 5 is connected to one end of the compensation unit 4, the other end of the compensation unit 4 is connected to the short section housing 34 of the corner unit 3, the long section housing 35 is connected to one end of the straight section unit 2, and the straight section unit The other end of 2 is connected with branch unit 3. The interior of each unit shell is filled with insulating gas, the shells of each unit are connected by flanges, and the conductors in each unit are connected by plugging.

Embodiment 3

[0048] Such as figure 2 As shown, a three-phase communal rigid gas insulated transmission line includes two straight section units 2 , a corner unit 3 , a branch unit 1 , a compensation unit 4 and a T-shaped unit 5 . One end of the compensation unit 4 is connected to the left port 54, and the other end is connected to the short section housing 34 of the corner unit 3. The deflection angle of the corner unit is 120°, and of course it can be set to other angles as required. The long-section housing 35 of the corner unit 3 is connected to two straight-section units 2 in turn, and then connected to the branch unit 1 . Each unit is filled with insulating gas.

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PUM

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Abstract

The invention relates to a three-phase integrated gas-insulated transmission line, comprising n straight segment units (2) and m compensation units (4), wherein each straight segment unit (2) comprises a casing and three straight conductors, the casing is filled with insulating gas, the three straight conductors are arranged inside the casing, n is not smaller than 1, each compensation unit comprises an intermediate casing (42), two corrugated pipes (41) provided with flanges, a short circulating sheet (43), a limit sheet (44), an insulating support member and three straight conductors, and m is not smaller than 1. The three-phase integrated gas-insulated transmission line disclosed by the invention has the advantages of simple and reliable structure, standard assembly, flexible arrangement, capability of adjusting the arrangement according to different mounting environments, convenience for assembly and construction, compact structure and small occupation, and is applicable for a plurality of solutions for line design.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transmission, in particular to a three-phase communal rigid gas-insulated power transmission line. Background technique [0002] Rigid gas insulated transmission line (GIL) is a power transmission device composed of an insulating gas with a certain pressure, a power transmission unit providing a current channel, and other insulating components enclosed in a metal pipe. [0003] As a large-capacity, high-voltage, long-distance transmission line, GIL has the advantages of high reliability, long service life and strong transmission capacity. GIL is a closed structure with metal rigidity, which is less affected by the external atmosphere and environment, and has no external magnetic field. Internal use of SF 6 or SF 6 and N 2 Mixed gas or compressed air is used as the insulating medium, which has good insulation performance, low dielectric loss, no aging problem, no flammability, and hi...

Claims

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Application Information

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IPC IPC(8): H02B1/20H02G5/06
CPCH02B1/202H02G5/063
Inventor 陈晓凌杭裕保陈晓鸣万仁洋
Owner 江苏安靠智能输电工程科技股份有限公司
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