A barrel type composite insulating material insulation performance testing device

Abstract

The invention discloses a barrel-type composite insulating material insulation performance testing device, which includes a constant temperature box and an electrode system. The constant temperature box is provided with a heating tube and a temperature sensor. The electrode system includes a high-voltage copper rod electrode and a ground electrode; the high-voltage copper rod electrode is a cylinder. The body copper electrode is located inside the barrel-type composite insulating material. The cylindrical copper electrode is two semi-cylindrical copper electrodes cut along the diameter; the upper surface of the cylindrical copper electrode is tapped into the upper copper rod, and the lower surface is tapped Screw in the lower copper rod; the ground electrode is close to the outer wall of the barrel-type composite insulation material; the upper copper rod is connected to the high-voltage terminal to the partial discharge detector or voltage measuring instrument, and the ground electrode is connected to the low-voltage terminal; the partial discharge detector or voltage measuring instrument will collect The received voltage data is sent to the computer. The invention can ensure that the electrode and the insulating material are tightly bonded, and prevent air gap discharge caused by gaps between the electrode and the insulating material and creepage of the insulating material along the radial direction.

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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