GIL insulator flashover voltage increasing method based on gas-solid interface electric field optimization

A gas-solid interface and flashover voltage technology, applied in insulators, circuits, electrical components, etc., can solve the problems of enhancing local electric field, threatening the safe operation of the system, reducing the flashover voltage of insulators, etc., to improve the flashover voltage and optimize the structure. , the effect of improving reliability

Inactive Publication Date: 2019-04-19
TIANJIN UNIV +1
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Problems solved by technology

Studies have shown that under a DC electric field, charges tend to accumulate on the surface of the insulator during long-term operation, thereby enhancing the local electric field and causing partial discharges, resulting in flashover along the surface o

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  • GIL insulator flashover voltage increasing method based on gas-solid interface electric field optimization
  • GIL insulator flashover voltage increasing method based on gas-solid interface electric field optimization
  • GIL insulator flashover voltage increasing method based on gas-solid interface electric field optimization

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] The invention provides a method for improving the flashover voltage of GIL insulators based on the optimization of the electric field at the gas-solid interface. Through fluorinated surface treatment, the thickness of the fluorinated layer of the insulator and the distribution of the surface conductance are regulated to optimize the electric field distribution; the thickness of the fluorinated layer of the insulator and the surface conductance The gradient distribution depends on the surface geometry design.

[0017] like Picture 1-1 Shown, the surface treatment flow process of embodiment one is as follows:

[0018] (1) Starting from the junction of the surface of the insulat...

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Abstract

The invention discloses a GIL insulator flashover voltage increasing method based on gas-solid interface electric field optimization. A surface of an epoxy insulator is partitioned, different parts ofthe epoxy insulator are respectively subjected to fluorination treatment at different degrees, and the surface conductivity of the insulator is high at three junction points where an electric field distorts, so that electric field distribution is improved, flashover voltage of the insulator along the surface is improved, and the insulating property of the insulator is improved.

Description

technical field [0001] The invention belongs to the field of modified polymer materials and equipment manufacturing, in particular to a method for improving the flashover voltage of GIL insulators based on the optimization of the gas-solid interface electric field. Background technique [0002] Compared with overhead line and cable transmission, GIL has the advantages of flexible laying method, large transmission capacity, high reliability and environmental friendliness. In recent years, it has made great progress in solving power transmission in special areas. In GIL's gas / solid composite insulation system, epoxy cast pot and column insulators are usually selected for conductor support and electrical insulation. Studies have shown that under a DC electric field, charges tend to accumulate on the surface of the insulator during long-term operation, thereby enhancing the local electric field and causing partial discharges, resulting in flashover along the surface of the insul...

Claims

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Application Information

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IPC IPC(8): H01B19/04
CPCH01B19/04
Inventor 杜伯学冉昭玉李进梁虎成傅明利侯帅景一王泽华刘浩梁
Owner TIANJIN UNIV
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