Title :
Influence of pollution of HV insulators
Author_Institution :
Dept. of Electr. Eng., Cairo Univ., Egypt
Abstract :
The factors affecting pollution-layer conductivity are reported and discussed. Pollution-layer conductivity is shown to depend on the contamination material, the wetting method, and the pollution-layer density. Tests to simulate pollution conditions in the desert and near cement factories are also discussed. The tests were carried out using the cap-and-pin type of insulator, which is commonly used in overhead networks in Egypt and neighboring countries. The process of wetting the polluted surfaces of transmission line insulators has a great effect on the conductivities and flashover voltages of the transmission line insulators
Keywords :
air pollution; flashover; insulators; overhead lines; Egypt; HV insulators; cap-and-pin type of insulator; cement factories; contamination material; desert; flashover voltages; overhead networks; pollution conditions; pollution-layer conductivity; pollution-layer density; transmission line insulators; wetting method; Building materials; Conducting materials; Conductivity; Flashover; Insulation; Insulator testing; Pollution; Production facilities; Surface contamination; Transmission lines;
Conference_Titel :
Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
DOI :
10.1109/ELINSL.1990.109739
