Let's first introduce insulators, commonly known as porcelain bottles, which are insulators used to support wires. It can ensure that the wires, crossarms, and towers have sufficient insulation. The manufacturing technology of composite insulators is mature, the process is simple, and the combination design of core rod strength, hardware strength, and crimping strength is relatively reasonable. When operating under long-term high humidity atmospheric conditions, if the hydrophobicity of composite insulators is partially or completely lost, it is easy to cause flashover accidents due to arcing short circuiting between umbrella skirts, which seriously threatens the safe and reliable operation of the power grid.

At present, the umbrella skirt shape of composite insulators used in transmission lines has been greatly improved compared to the past, mainly consisting of large and small umbrellas, three umbrella structure five umbrella combinations, and two large, two medium, and three umbrella types. The umbrella diameter reaches 200 millimeters, and the umbrella spacing reaches 140 millimeters; For all kinds of hollow composite insulators, it is necessary to prevent the more dense umbrella skirt structure design from easily forming a chain in heavy rain or rainstorm rain water, causing rain flash. Therefore, the optimization design of the umbrella skirt shape of composite insulators is still a key area that requires systematic research. The design of interface and sealing structure is the key to the design of composite hollow insulators. After all, the operation time and quantity of composite insulators are not long, and many key technologies have not been tested in the operating environment for a long time, especially the interface between end accessories, glass fiber reinforced epoxy resin pipes, and umbrella covers. If not handled properly, it will affect the safe operation of composite hollow insulators.

Insulators can be classified into different types and types according to different classification standards and forms, exhibiting different performance and value in practical use and development. They can be divided into needle insulators, rod insulators, and suspension insulators according to their structural forms. It can withstand the vertical load and horizontal tension of the wire during operation. It also suffers from sun exposure, rain, climate change, and chemical corrosion. Therefore, insulators should have both good electrical performance and sufficient mechanical strength. The quality of insulators is crucial for the safe operation of power lines. The classification of link insulators can be based on their structural form, function, and materials used. (2) According to different functions, it can be divided into ordinary insulators and anti fouling insulators. According to the materials used, insulators can be divided into porcelain insulators, glass insulators, and composite insulators (artificially synthesized with organic silicon) insulators. Composite insulator is the abbreviation for rod-shaped suspended organic silicon rubber insulator.