GIS/GIL surface electric field regulation and self-diagnosis method based on functional gradient coating
A functional gradient, electric field regulation technology, applied in coatings, circuits, electrical components, etc.
Pending Publication Date: 2022-07-05
TIANJIN UNIV
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Problems solved by technology
However, there are still some limitations in how to evaluate the optimization effect of the electric field along the surface of the pot insulator
Method used
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Embodiment 1
[0031] The purpose of the present invention is to provide a GIS / GIL along-surface electric field regulation and self-diagnosis method based on functional gradient coating, prepare epoxy resin / zinc sulfide composite materials with different relative permittivity, and make it according to several designed permittivity gradients The area is attached to the surface of the GIS / GIL basin insulator, and the electric field distribution of the gas-solid interface under operating conditions is optimized, and the electric field optimization effect is self-diagnosed according to the light intensity distribution under its voltage. The specific implementation steps are as follows:
[0032] 1) The epoxy resin matrix selected for the preparation of the basin insulator is CT-5531 epoxy resin from Huntsman Company, the curing agent is polyimide resin HY-651, and the alumina filler is Tai'an Shengyuan-RF-2- Alpha alumina, epoxy resin, curing agent, and alumina filler were added to the epoxy vacuu...
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Abstract
The invention discloses a GIS / GIL surface electric field regulation and self-diagnosis method based on a functional gradient coating, and the method mainly comprises the steps: carrying out the gradient optimization design of the surface of a GIS / GIL basin-type insulator, dividing the surface of the whole basin-type insulator into 3-8 annular regions in the radial direction, the relative dielectric constants of the coating materials selected in the annular areas are sequentially reduced; mixing an epoxy resin matrix with zinc sulfide fillers doped with different metals to prepare composite materials with different dielectric constants; attaching the dielectric constant to the surface of a GIS / GIL basin-type insulator according to a plurality of designed dielectric constant gradient regions; and finally, performing self-diagnosis on the electric field optimization effect according to the light intensity distribution on the surface of the basin-type insulator under the normal working voltage. The method has important application value in the aspects of optimizing the GIS / GIL basin-type insulator gas-solid-interface electric field and improving the stability of a power transmission system.
Description
technical field [0001] The invention belongs to the field of high-voltage equipment insulation, and particularly relates to a GIS / GIL creeping electric field regulation and self-diagnosis method based on a functional gradient coating. Background technique [0002] In recent years, GIS / GIL transmission technology has become a research hotspot and development direction in the current UHV transmission field due to its advantages of high transmission voltage level, large transmission capacity, stable operation, and low power loss. The basin insulator is the core component of the GIS / GIL for mechanical support, electrical insulation and gas isolation. During the operation of the GIS / GIL, the gas-solid interface electric field distortion of the basin insulator is obvious, and the local electric field strength is too high to cause partial discharge, Air-gap breakdown, surface flashover and other insulation faults, the above-mentioned faults caused by the electric field distortion a...
Claims
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IPC IPC(8): H01B17/42C09D163/00C09D7/61
CPCH01B17/42C09D163/00C09D7/61C08K2003/3036C08K3/30
Inventor 李进王禹淮杜伯学梁虎成
Owner TIANJIN UNIV