1. Fewer operation accidents
Flashover and damage of composite insulators have been occurring frequently since around 1998, and their problems can be divided into string accident and flashover accident.The former is a product quality problem;The latter is related to improper use due to lack of operational experience, and also related to the deterioration of silicone rubber.In the past two years, with the continuous improvement of the shape of composite insulator umbrella skirt, end sealing technology, umbrella sleeve forming technology, the reliability of mechanical strength and quality control, the operation accidents of composite insulator are decreasing, and the manufacturing technology has reached the international leading level.
2. The scope of application is becoming more and more extensive
Composite insulators are not only used in China, but also exported in large quantities.By the end of October 2005, about 30,000 composite insulators had been used in China's DC power transmission lines, accounting for more than half of the dc insulators.Not only for overhead transmission lines, but also gradually used in substations.At present, some of the 110 and 220kV substations in The country have started to use composite insulators in the ingoing line and bus line, and so far they are in good operation.Not only for dangling strings, but also increasingly for tensions and jumper strings.Composite insulators have been widely used in all aspects of power system, and their excellent performance and high reliability have been widely accepted and affirmed.