A graded voltage transformer

Abstract

The invention relates to a graded type voltage transformer comprising an inner insulation dielectric layer and an external insulation dielectric layer which are arranged in a coaxial mode; the interior surface of the inner insulation dielectric layer is bonded with a first metal layer; the external surface of the insulation dielectric layer is bonded with a second metal layer; the interior surface of the external insulation dielectric layer is bonded with a third metal layer positioned on the outer side of the second metal layer; the external surface of the external insulation dielectric layer is bonded with a fourth metal layer; the second metal layer comprises at least one inner side low-voltage electrode; the third metal layer comprises an outer side low-voltage electrode which is the same with the inner side low-voltage electrode in terms of quantity; and the inner side low-voltage electrode is in short circuit with the outer side low-voltage electrode. According to the invention, problems that a continuous arranged structure of a metal layer, an insulation dielectric layer, a metal layer, an insulation dielectric layer and a metal layer has relatively high requirements for processing technology in the prior art are solved.

Description

technical field [0001] The invention relates to a graded voltage transformer. Background technique [0002] With the development of the power system in the direction of large capacity, ultra-high voltage and ultra-high voltage, the requirements for miniaturization, intelligence and high reliability of power equipment are getting higher and higher. The principle of protection, in order to meet the requirements of the current smart grid, there is an urgent need for a multi-output voltage transformer with miniaturization, high reliability, and high precision. Existing voltage transformers of this type, such as the "multi-output electronic voltage transformer for GIS" disclosed in Chinese patent CN203772925U, include a pressure vessel, which is provided with a primary conductor, a suspension cylinder, The first metal layer, the second metal layer and the third metal layer, the first metal layer is pasted on the suspension electrode, the second metal layer includes two low-volta...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a graded voltage transformer to solve the problem in the prior art that the continuous arrangement of the metal layer, insulating medium layer, metal layer, insulating medium layer, and metal layer requires a high processing technology.

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