Fluorinated 110kV basin-type insulator

Abstract

The invention relates to a fluorinated 110kV basin-type insulator, which comprises an insulator body, wherein a fluorinated layer is generated on the outer surface of the insulator body through a fluorination device, and the insulator body is made of an epoxy resin mixture; the thickness of the fluorinated layer is 0.3-2[mu]m; and the epoxy resin mixture comprises epoxy resin and aluminum oxide. According to the invention, the surface layer of the epoxy insulator is fluorinated by using a direct fluorination technology, the cost is low, the formula and the production process do not need to beadjusted, the direct current flashover voltage of the fluorinated 110kV basin-type insulator is increased to average 290kV from average 250kV before fluorination in a sulfur hexafluoride gas environment of two atmospheric pressures, and the direct current flashover performance of the fluorinated 110kV basin-type insulator is improved by 10%-20%; the conductivity of the surface of the insulator body is improved from 1*10<-19> to 1*10<-13> and reaches 6 orders of magnitudes or above, surface charge accumulation of the insulator body can be effectively inhibited, and the service life of the insulator body is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of surface treatment of epoxy pot insulators, in particular to a fluorinated 110kV pot insulator. Background technique [0002] Basin insulator is the key insulating part of the high-voltage switch of GIS combined electrical equipment. It plays the role of dividing the gas chamber, supporting the internal conductor and insulating the live conductor and the shell in the high-voltage switch. Its quality will directly affect the operation of the GIS combined electrical switch. quality. Although GIS and GIL have been successfully applied in high-voltage alternating current (HVAC) power transmission and distribution systems for about half a century, the existing research results and practical applications have shown that the design and manufacture of high-voltage direct current with the same insulation reliability as HVAC GIS and GIL (HVDC) GIS and GIL are still a challenge, mainly because the surface of the epo...

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Problems solved by technology

[0003] In gas-insulated power transmission equipment, the surface of the epoxy insulator is the weakest area of ​​the system insulation. This is because on the one hand, the surface of the insulator is easy to accumulate charges, and the electrical breakdown of the system is most likely to occur along the surface of the insulator. On the other hand, long-term operation During the process, the surface of the insulator will be aging and degraded due to partial discharge, and the dielectric strength of the surface will be reduced, so that its insulation performance will be lost and it will have to be replaced, which will not only bring direct economic losses, but also cause significant indirect economic losses due to power outages ; Therefore, this application proposes a fluorinated 110kV pot insulator

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