Composite insulating material breakdown experimental device and experimental method

Abstract

The invention discloses a composite insulating material breakdown experimental device and an experimental method. A heating tube, a temperature sensor and a humidity sensor are arranged inside a transparent aging box, wherein the heating tube, the temperature sensor and the humidity sensor are connected with a computer, an insulating support with an epoxy mica insulating plate is further arranged, a composite insulating material sample is placed on the epoxy mica insulating plate and is connected to an external circuit through a belt-fixed spherical copper electrode; a voltage measuring instrument is used for monitoring the voltage applied to the composite insulating material sample by the external circuit and sending a monitoring value to the computer; the transparent aging box is further connected with a vacuum pump through a pipeline, and the vacuum pump is controlled by the computer; and a camera is arranged outside the transparent aging box and is used for sending the shot image data of the front-and-back process of a breakdown phenomenon to the computer. According to the experimental device and the experimental method in the invention, the aging state of the composite insulating material glass fiber reinforced plastic barrel under the conditions of high voltage, constant temperature and constant humidity can be reflected. The experimental device and the experimental method are simple to operate and safe and easy to implement.

Description

technical field [0001] The invention relates to the technical field of insulation performance detection of composite insulating materials, in particular to an experimental device and method for breakdown of composite insulating materials. Background technique [0002] In recent years, composite insulation jackets have attracted much attention in the field of high-voltage insulation. Among them, the glass fiber reinforced plastic barrels that are mainly in contact with oil play a good supporting role and are favored by power grid companies because of their good dielectric properties and breakdown resistance. Different from general insulation equipment, composite bushings will age correspondingly over time due to overheating, design and manufacturing defects, etc. The aging FRP barrel is prone to breakdown due to defects in its own technology. The accident caused the entire composite insulating bushing to break and destroy its overall insulating structure. [0003] It can be ...

AI Technical Summary

Problems solved by technology

Different from general insulation equipment, composite bushings will age correspondingly over time due to overheating, design and manufacturing defects, etc. The aging FRP barrel is prone to breakdown due to defects in its own technology. Accidents, resulting in the fracture of the entire composite insulation bushing, destroying its overall insulation structure

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