Stress control body for plastic insulation high-voltage and direct-current cable terminal

A high-voltage DC and cable terminal technology, applied in the direction of cable accessories, cable installation, electrical components, etc., can solve the problems of unreasonable electric field distribution, unqualified plastic insulation high-voltage DC cable terminals, etc., to reduce the interface space charge, excellent Effect of homogenized electric field distribution and high DC breakdown strength

Inactive Publication Date: 2013-08-21
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of unreasonable electric field distribution and no qualified plastic insulated high voltage direct current cable terminals above 160kV in the existing design of plastic insulated high voltage direct current cable terminals, and to provide a stress control body for plastic insulated high voltage direct current cable terminals

Method used

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  • Stress control body for plastic insulation high-voltage and direct-current cable terminal
  • Stress control body for plastic insulation high-voltage and direct-current cable terminal
  • Stress control body for plastic insulation high-voltage and direct-current cable terminal

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specific Embodiment approach 1

[0019] Specific embodiment one: In this embodiment, a stress control body for a plastic insulated high-voltage DC cable terminal is composed of a reinforced insulator and a stress cone. The stress cone is arranged at one side port of the reinforced insulator. The inner cone curve is a cubic Bezier curve, and the port on the other side of the reinforced insulator is trapezoidal; the plastic insulated high-voltage DC cable terminal is expanded with a stress control body and installed at the end of the cable;

[0020] The reinforced insulator is made of high-performance silicone rubber-based conductance nonlinear insulating material or EPDM rubber-based conductance nonlinear insulating material; the high-performance silicone rubber-based conductance nonlinear insulating material is a compounded silicone rubber-based conductance nonlinear Non-linear insulating material or liquid silicone rubber-based conductance non-linear insulating material;

[0021] The mixed silicone rubber-base...

specific Embodiment approach 2

[0025] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the organic peroxide is benzoyl peroxide, di-tert-butyl peroxide, dicumyl peroxide or 2,5-dimethyl- 2,5-di-tert-butylperoxyhexane. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: mixing silicone rubber-based conductance nonlinear insulating material by weight parts by 100 parts mixing silicone rubber, 19.5 parts nonlinear functional filler, 5~ 20 parts of fumed white carbon black, 0.5-3 parts of nano-ferric oxide, 0.5-5 parts of diphenylsilanediol and 0.5-1.5 parts of organic peroxide, the non-linear functional filler consists of 10 parts of nano-zinc oxide, 2 parts of nano-titanium dioxide, 6 parts of nano-silicon carbide, 0.5 parts of carbon nanotubes, 0.5 parts of conductive carbon black and 0.5 parts of nano-graphite. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a stress control body for a plastic insulation high-voltage and direct-current cable terminal. The stress control body for the plastic insulation high-voltage and direct-current cable terminal aims at solving the problems that electric fields in an existing plastic insulation high-voltage and direct-current cable terminal are distributed unreasonably, and a qualified plastic insulation high-voltage and direct-current cable terminal with the voltage more than 160kV does not exist. The stress control body for the plastic insulation high-voltage and direct-current cable terminal is composed of a strengthening insulator and a stress cone, wherein the stress cone is arranged on one side end port of the strengthening insulator, the stress cone is in a horn shape, the curve of the inner conical surface of the stress cone is a tri-bezier curve, and the other side end port of the strengthening insulator is in a trapezoid shape. After the diameter of the stress control body for the plastic insulation high-voltage and direct-current cable terminal is expanded, the stress control body for the plastic insulation high-voltage and direct-current cable terminal is installed on the end portion of a cable. The stress control body for the plastic insulation high-voltage and direct-current cable terminal is applied to the electricity field.

Description

technical field [0001] The invention relates to a stress control body for a plastic insulating high-voltage direct current cable terminal. Background technique [0002] Compared with AC cables, high-voltage DC cables have obvious advantages in island power supply, large city power supply capacity expansion, wind power transmission, offshore oil and natural gas platform power supply, and independent grid connection. Plastic-insulated high-voltage DC cables have been widely used abroad, but there is no plastic-insulated high-voltage DC cable line in operation in China. Three XLPE-insulated high-voltage DC cable lines that have just been approved in recent years are under construction. Using a stress control body with a stress cone at the cable terminal is one of the effective methods to solve the electric field concentration at the cable end. The prefabricated rubber terminal mainly uses silicone rubber and ethylene-propylene rubber to make the stress control body. In the ca...

Claims

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Application Information

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IPC IPC(8): H02G15/064C08L83/04C08L23/16C08K13/04C08K7/00C08K3/36C08K3/22C08K5/5419C08K5/14C08K3/04C08K3/06C08K5/33
Inventor 韩宝忠李忠华陈宇李长明
Owner HARBIN UNIV OF SCI & TECH
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