Oil-impregnated paper sleeve local overheating defect simulation device and method

Abstract

The invention discloses an oil-impregnated paper sleeve local overheating defect simulation device and method, and the device comprises a temperature measurement module disposed on a capacitor core, the temperature measurement module is connected with a temperature digital display meter, and is used for transmitting a temperature measurement result to the temperature digital display meter; the device further comprises a light source and a lens arranged between the light source and the temperature measurement module, and the lens is used for condensing light emitted by the light source on the temperature measurement module. According to the invention, the Fresnel lens is combined with the strong light source to simulate the local overheating defect of the oil-less equipment such as the sleeve, so that the fault is closer to the actual fault, other experimental measurement is not influenced, and meanwhile, good adjustability and response speed are achieved.

Description

technical field [0001] The invention belongs to the technical field of high-pressure testing, and in particular relates to a simulation device and method for local overheating defects of oil-immersed paper bushings. Background technique [0002] Most of the existing research on overheating defects of test products adopts methods such as cyclic heating and water bath heating, which belong to the overall heating, so it is not suitable for the simulation of local overheating defects. For example, the current-induced heating defects of transformer bushings are typical local overheating defects. At the same time, there are problems such as uncontrollable temperature, easy introduction of foreign objects, and interference with the electromagnetic field around the experiment. [0003] Oil-impregnated paper bushings (hereinafter referred to as bushings) are key equipment widely used in power transformer outlets or lead wires through walls, and are the first trial-produced insulation...

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Problems solved by technology

[0002] Most of the existing research on overheating defects of test products adopts methods such as cyclic heating and water bath heating, which belong to the overall heating, so it is not suitable for the simulation of local overheating defects. For example, the current-induced heating defects of transformer bushings are typical local overheating defects. At the same time, there are problems such as uncontrollable temperature, easy introduction of foreign objects, interference with the electromagnetic field around the experiment, etc.

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