Barrel type composite insulating material insulating property detection device

Abstract

The invention discloses a barrel type composite insulating material insulating property detection device which comprises a constant temperature box and an electrode system. A heating pipe and a temperature sensor are arranged in the constant temperature box. The electrode system includes high-voltage copper bar electrodes and a ground electrode; the high-voltage copper bar electrodes are cylindrical copper electrodes and are arranged inside a barrel type composite insulating material; the cylindrical copper electrodes are two semi-cylindrical copper electrodes formed by cutting along the diameter; upper cooper bars are screwed into the circle centers of the upper surfaces of the cylindrical copper electrodes through tapping; and lower copper bars are screwed into the circle centers of thelower surfaces through tapping. The ground electrode is in close contact with the outer wall of the barrel type composite insulating material. The upper cooper bars are connected with a high-voltage terminal and connected with a partial discharge detector or a voltage measuring instrument; and the ground electrode is connected with a low-voltage terminal. The partial discharge detector or the voltage measuring instrument sends the acquired voltage data to a computer. Therefore, the tight fitting of the electrode and the insulating material can be ensured; and the air gap discharge caused by agap between the electrode and the insulating material and creepage of the insulating material in the radial direction are prevented.

Description

technical field [0001] The invention relates to the technical field of insulation performance detection of high-voltage power equipment, in particular to a barrel-type composite insulation material insulation performance detection device. Background technique [0002] In recent years, composite insulating bushings have been widely used in power transmission and transformation equipment due to their excellent insulating properties, and the inner insulating material composited with glass fiber reinforced epoxy resin-based mandrels that play a supporting role are also increasingly widely used. The composite insulating mandrel that is mainly in contact with oil in the composite insulating bushing is the main part for internal insulation and support, and plays the role of carrying and supporting electrical equipment. It can be said to be the core part of the composite bushing. In addition, the composite insulating mandrel also has good dielectric properties and breakdown resistan...

AI Technical Summary

Problems solved by technology

Due to defects in the process such as air gaps, impurities, etc., the aging insulating mandrel will generate partial discharge and cause further deterioration

Severely deteriorated composite insulating tubes will have problems such as mandrel pulverization and insulation breakdown, and even cause the entire composite insulating sleeve to break, destroying its overall insulation structure, and seriously threatening the safe and stable operation of the power grid.

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