Basin-type insulator surface charge prevention and control method based on flexible coating

A pot-type insulator and surface charge technology, which is applied in the direction of insulators, circuits, electrical components, etc., can solve the problems of UHV DC gas-insulated equipment research and lack of engineering examples, and achieve low price, improved surface insulation performance, and simple process Effect

Pending Publication Date: 2021-09-03
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the technology of AC GIL and GIS is becoming more and more mature, the structure is becoming more and more compact, and the voltage level and transmission capacity are gradually increasing, compared with the successful development and promotion of AC gas-insulated equipment, the related research and development of UHV DC gas-insulated equipment for engineering applications Engineering examples are still scarce

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  • Basin-type insulator surface charge prevention and control method based on flexible coating
  • Basin-type insulator surface charge prevention and control method based on flexible coating
  • Basin-type insulator surface charge prevention and control method based on flexible coating

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Embodiment Construction

[0032] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0033] A method for preventing and controlling the surface charge of basin-type insulators based on flexible coating, the innovative feature of which is that the steps of the method are:

[0034] S1. Determination of the coating area: For the real-sized pot-type epoxy insulator with complex surface morphology, the surface charge accumulation test under DC voltage is carried out. The average density diameter of the surface charge of the insulator is To the distribution such as figure 1 As shown in the figure, it can be seen that the peak value of the radial distribution of the average charge density increases with the increase of the voltage, and the maximum peak values ​​at -10kV, -20kV, and -30kV are 5.8pC / mm2, 16.9pC / mm2, and 25.1 pC / mm2 r...

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Abstract

The invention relates to a basin-type insulator surface charge prevention and control method based on flexible coating. The method is characterized by comprising the following steps: S1, determining a coating area; S2, preparing a flexible epoxy coating composite coating; and S3, applying the flexible epoxy coating composite coating. According to the invention, the coating with a deep trap is coated near the grounding electrode to inhibit charge injection, the non-planar area of the insulator is coated with the shallow trap coating to accelerate charge dissipation, and the coating with a non-linear conductive characteristic is used as a transition area between the grounding electrode and the insulator and is coated between the grounding electrode and the insulator. The electric field of the insulator adopting the flexible coating technology is optimized, the surface charge density of the flexible coating insulator is lower than that of an uncoated insulator, and the surface insulation performance of the insulator is improved. In addition, the technical process is simple, the price of the flexible epoxy coating composite material is low, and large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of high voltage and insulation, in particular to a method for preventing and controlling the surface charge of a basin-type insulator based on flexible coating. Background technique [0002] my country has a vast territory, but the spatial distribution of supply and demand of power resources is extremely uneven, and there is a serious spatial dislocation relationship between the two. Among them, renewable energy such as wind power and hydropower are mainly concentrated in the west and north, and load centers are concentrated in the east and south. The actual situation of extremely unbalanced energy reserves and power load distribution forces my country to take the road of long-distance, large-scale power transmission and nationwide optimization of power resource allocation. In order to meet the objective needs of high-power power transmission, DC power transmission and transformation projects have become an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/04
CPCH01B19/04
Inventor 高宇赵慧存李敬王欢苑晓晨韩涛朱新山
Owner TIANJIN UNIV
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