Equipment outlet casing adapting electrical conductivity adaptive control composite

An adaptive regulation and composite material technology, applied in the direction of heterogeneous insulating materials, circuits, electrical components, etc., can solve problems such as large size, internal heating, quality problems, etc., achieve efficiency and economic benefits, improve heat dissipation performance, The effect of simplifying the production process

Active Publication Date: 2018-03-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of the capacitor core has high requirements on the technical level, and various quality problems are prone to occur in the production process, which has a significant impact on the reliability of the capacitor bushing; the high technical level also seriously restricts the production cost. reduction and increase in productivity
In addition, due to the large size and serious internal heating of the high-voltage bushing with capacitor core, it is a major hidden danger for the safe and reliable operation of the bushing

Method used

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  • Equipment outlet casing adapting electrical conductivity adaptive control composite
  • Equipment outlet casing adapting electrical conductivity adaptive control composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The equipment outlet bushing of this embodiment is used under the DC voltage level of 110kV. The inorganic filler powder particles in the equalizing layer 5 and the electrode extension layer 7 are all made of ZnO pressure-sensitive ceramic powder, and the organic material with high dielectric strength is made of 100 parts of three Yuan ethylene propylene rubber; wherein, the particle size of the ZnO pressure-sensitive ceramic powder used in the equalizing layer 5 is 30-50 μm, and the number of parts of the ZnO pressure-sensitive ceramic powder is 80 parts; the electrode extension layer 7 is The particle size of the ZnO pressure-sensitive ceramic powder used is 150-200 μm, and the number of parts of the ZnO pressure-sensitive ceramic powder is 200 parts.

[0032] In this embodiment, the threshold field strength of the conductivity self-adaptive regulation composite material is adjusted by multi-element blending and doping by introducing 20 parts of carbon black into both th...

Embodiment 2

[0034] The equipment outlet bushing of this embodiment is used at a DC voltage level of 500kV. The inorganic filler powder particles of the pressure equalization layer 5 and the electrode extension layer 7 are respectively SiC powder and ZnO varistor ceramic powder, and high dielectric strength organic materials are all made of 100 parts of epoxy resin; wherein, the particle size of the SiC powder used in the equalizing layer 5 is 300-500nm, and the number of parts of the SiC powder is 40 parts; the ZnO pressure-sensitive ceramic powder particles used in the electrode extension layer 7 The size is 150-200 μm, and the number of parts of the ZnO pressure-sensitive ceramic powder is 200 parts.

Embodiment 3

[0036] The equipment outlet bushing of this embodiment is used under the AC voltage level of 330kV. The inorganic filler powder particles in the equalizing layer 5 adopt ZnO pressure-sensitive ceramic powder and SiC powder, and the inorganic filler powder particles in the electrode extension layer 7 adopt ZnO pressure-sensitive ceramic powder. Sensitive ceramic powder and CB powder, high dielectric strength organic materials are all made of 100 parts polypropylene; among them,

[0037] The particle sizes of the ZnO varistor ceramic powder and SiC powder used in the equalizing layer 5 are 30-50 μm and 600-800 nm respectively, and the parts of ZnO varistor ceramic powder and SiC powder are 50 parts and 20 parts respectively ;

[0038] The particle sizes of the ZnO varistor ceramic powder and CB powder used in the electrode extension layer 7 are 100-125 μm and 30 nm respectively, and the parts of ZnO varistor ceramic powder and CB powder are 100 parts and 20 parts respectively. ...

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Abstract

The invention provides an equipment outlet casing adapting electrical conductivity adaptive control composite, which belongs to the technical field of high voltage transmission connection equipment. The equipment outlet casing includes a guide bar, a pressure sharing layer, a current limiting layer and a glass fiber sleeve which are wrapped in the outside of the guide rod from the inside to the outside; the upper lateral of the glass fiber sleeve is wrapped with a silicone rubber umbrella sheath. An electrode extension layer is embedded in the current limiting layer; the pressure sharing layerand an extension layer of motor are both made of electrical conductivity adaptive control composite combined with inorganic filler powder and high insulation strength organic materials; the two endsof the guide rod are both provided with first flanges which form a closed space with the glass fiber sleeve; the central section of the glass fiber-sleeve is provided with a second flange, the top ofwhich is attached to one end of the silicone rubber umbrella sheath and the inner wall of which is contacted with the electrode extension layer. The equipment outlet casing adapting the electrical conductivity adaptive control composite has the advantages that the problem of flashover of the main insulation breakdown and flange is solved, and the size of the equipment outlet casing is reduced, andthe heat and mechanical properties of the casing are improved, the production process is simplified.

Description

technical field [0001] The invention belongs to the technical field of high-voltage power transmission connection equipment, in particular to an equipment outlet bushing using nonlinear conductance composite material, which is suitable for AC and DC power systems. Background technique [0002] The equipment outlet bushing is used to insulate and fix the lead-out wires of high-voltage equipment to the ground. As an important equipment in the power system, its reliability has an important influence on the safe and reliable operation of the power system. The equipment outlet bushing is composed of a high-voltage electrode guide rod inserted into the center of the middle flange of the ground electrode. It is a typical insulation structure with a vertical medium surface component in the electric field. Its main insulation is prone to breakdown and flashover is prone to occur at the edge of the flange. network. To this end, it is necessary to improve the electric field near the f...

Claims

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Application Information

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IPC IPC(8): H01B17/58C08L23/16C08L63/00C08L23/12C08K3/22C08K3/04C08K3/34C08K3/38
CPCH01B17/58H01B1/12H01B17/583C08K3/04C08K3/22C08K3/34C08K3/38C08K2201/003C08K2003/2296C08L23/16C08L63/00C08L23/12H01B17/325H01B17/265H01B3/006H01B3/12H01B3/10H01B3/441H01B3/40C08K2201/005
Inventor 何金良胡军赵孝磊杨霄余占清曾嵘张波李琦
Owner TSINGHUA UNIV
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