Unlock instant, AI-driven research and patent intelligence for your innovation.

Stress cone and capacitive composite insulating high-voltage cable terminal for overhead line

A technology of composite insulation and high-voltage cables, which is applied in the direction of cable accessories, cable installation, electrical components, etc., can solve the problems of lack of rigidity, poor solution to the uniform distribution of the electric field of the external insulation of the cable terminal, and hidden dangers of oil leakage, etc., to improve the electric field Distribution, solve the effect of uniform distribution of electric field

Active Publication Date: 2014-01-22
TIANJIN WOERFAR ELECTRIC EQUIP
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the power system, the high-voltage cable terminals connected to overhead lines are mainly stress cone-type. The dry-type product is an integral prefabricated cable terminal made of silicone rubber, which integrates stress cones, sheds and insulation. The disadvantages are: no rigidity
Its oil type product is filled with insulating oil in the insulating sleeve, the disadvantage is that it is heavy and there is a hidden danger of oil leakage
The inherent disadvantages of the stress cone type high-voltage cable terminal connected to the overhead line are: although the electric field distribution at the cut-off point of the cable terminal shield is improved, the problem of uniform distribution of the external insulation electric field of the cable terminal is not well resolved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stress cone and capacitive composite insulating high-voltage cable terminal for overhead line
  • Stress cone and capacitive composite insulating high-voltage cable terminal for overhead line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] see figure 1 and figure 2 , which discloses an embodiment 1 of the stress cone type and capacitive composite insulation type high-voltage cable terminal for overhead lines of the present invention, including a shielding cover 1, outlet fittings 2, conductive pipe 3, connector 4, cable 5, and stress cone structure 6. Capacitive insulator 7 and flange 8.

[0019] The shielding cover 1 is roughly in the shape of a circular cover, and a connecting portion 11 protrudes upward from its top end, and the outlet fitting 2 is connected to the connecting portion 11 . The shielding case 1 is covered on the conductive pipe 3 . One end of the conductive tube 3 is connected to the inner wall of the shielding case 1 , and the other end of the conductive tube 3 is fixedly connected to the connector 4 . The connector 4 is fixedly connected to the conductor 51 of the cable 5 . A stress cone structure 6 is arranged outside the cable 5 . The capacitive insulator 7 covers the conductiv...

Embodiment 2

[0028] The embodiment 2 is similar to the embodiment 1, the difference is that it further includes a conductive column, the conductive column passes through the shielding cover, one end of the conductive column is connected to the outlet fitting, and the other end of the conductive column is connected to the conductive tube. This is the transformation of Embodiment 1 of the stress cone type and capacitive composite insulation type high-voltage cable terminal used for overhead lines of the present invention.

[0029] In summary, the stress cone type and capacitive composite insulated high-voltage cable terminal used for overhead lines of the present invention uses the stress cone structure 6 and the capacitive insulator 7 to insulate and seal the cable terminal, which not only improves the electric field distribution at the cut-off part of the cable terminal shielding , and the capacitive insulator 7 well solves the problem of uniform distribution of the insulating electric fiel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a stress cone and capacitive composite insulating high-voltage cable terminal for an overhead line. The cable terminal comprises a shielding case, an outlet fitting, a conductive tube, a connecting piece, a cable, a stress cone structure, a capacitive insulator and a flange, wherein the top end of the shielding case protrudes to form a connecting part; the outlet fitting is connected with the connecting part; one end of the conductive tube is connected with the inner wall of the shielding case, and the other end of the conductive tube is fixedly connected with the connecting piece; the connecting piece is fixedly connected with a conductor of a cable; the stress cone structure is arranged outside the cable; the capacitor insulator covers the conductive tube and the stress cone structure; one end of the capacitive insulator is connected with the flange; the stress cone structure and the cable are fixed by the flange. According to the stress cone and capacitive composite insulating high-voltage cable terminal for the overhead line, the cable terminal is insulated and sealed through the stress cone structure and the capacitive insulator, so that the electric field distribution on a shielding cut-off part of the cable terminal is improved, and the problem of uniform distribution of an insulating electric field outside the cable terminal can be excellently solved through the capacitive insulator.

Description

technical field [0001] The invention relates to a stress cone-type and capacitance-type composite insulation high-voltage cable terminal for overhead lines in a power system. Background technique [0002] At present, in the power system, the high-voltage cable terminals connected to overhead lines are mainly stress cone-type. The dry-type product is an integral prefabricated cable terminal made of silicone rubber, which integrates stress cones, sheds and insulation. The disadvantages are: There is no rigidity. Its oil-type products are filled with insulating oil in the insulating sleeve, and the disadvantage is that it is heavy and there is a hidden danger of oil leakage. The inherent disadvantage of the stress cone type high-voltage cable terminal connected to the overhead line is that although the electric field distribution at the cut-off point of the cable terminal shield is improved, the problem of uniform distribution of the external insulation electric field of the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02G15/072
Inventor 王日新
Owner TIANJIN WOERFAR ELECTRIC EQUIP