Insulator icing flashover

Abstract

the insulator is a kind of important electric components, because it plays a role in electrical insulation and plays a supporting role in mechanical, power system and even the development of the whole society to a higher degree of dependence on the performance of insulators, the requirements are also rising. However, in recent years, China's domestic air pollution is serious, the weather conditions are complex, the icing flashover phenomenon has become a serious performance of insulator safety accidents. However, the proposed super hydrophobic materials in this paper, not only the anti icing flashover performance is better than the commonly used coating, and preparation process is sample, high performance, and low cost, which is expected to become a substitute for insulator coating now. the super hydrophobic coating is considered to be one of the important methods to solve the problem of flashover electrical equipment, so the study of high hydrophobicity flashover, super hydrophobic coating with high performance, simple process, low cost plays an important role in electrical equipment and power industry. In this paper, we will use a kind of method which is more powerful, graphene was prepared by electrochemical stripping and poly-two methyl siloxane in a certain proportion to prepare superhydrophobic surface. In this paper, the preparation of superhydrophobic surface, not only has excellent self-cleaning performance, but also has a very low corrosion current density. It is surprising that the superhydrophobic surface prepared by this method has good mechanical stability, and its surface can maintain the super hydrophobicity after the strong impact of the outside world. The method mentioned in this paper is not only capable of preparing a set of super hydrophobic surface self cleaning,mechanical stability is stable as a whole, it also provides a new idea for anti icing flashover of electrical equipment. 1. Introduction With the development of the electric power industry and the gradual improvement of the voltage level, the electrical equipment is playing a more and more important role in people's daily production and life. Of which the insulator is an important part of power system, however, the phenomenon of icing flashover has a great influence on the mechanical and electrical properties of insulators, which will threaten the stability and security of power system operation, resulting in huge economic losses. Take snow disaster in South China in 2008 as an example, the ice coating accidents spread to 13 provinces, State Grid economic losses in the accident up to 10 billion 450 million Yuan, and in daily life, line trip, outage accidents also occur caused by icing [1] , it causes a great impact on people's life. Therefore, it has become one of the most urgent problems to solve the problem of icing flashover. However, there are still a lot of defects in the deicing and anti icing methods currently used, and the efficiency is low and the energy consumption is large. Super hydrophobic coating is a kind of water ela...

Icing Condition Assessment of In-Service Glass Insulators Based on Graphical Shed Spacing and Graphical Shed Overhang

“…The main reasons for ice flashover include: the electrolyte of pollution from air and insulator surface increasing freezing-water capacity; the ice bridging between two adjacent insulators sheds leading to decline of icing flashover voltage [2][3][4].…”