One of the main reasons that flashover can occur in distribution lines is the sea salt contamination of medium voltage insulators. Equivalent salt deposit density (ESDD) expresses the contamination level of insulators and is used as the main criterion for scheduling the maintenance (washing) of insulators. In this paper two different adaptive techniques, a multi model partitioning filter (MMPF)...

The accurate estimation of deposits adhering on insulators is of great significance to prevent pollution flashovers which cause huge costs worldwide. Researchers have developed sensors using different technologies to monitor insulator contamination on a fine time scale. However, there is lack of analysis of these data to reveal spatial and temporal characteristics of insulator contamination, an...

Through this paper work we have analyzed the effect of different contaminants on the flashover by creating artificial pollution condition, considering the natural condition where more than one salt as contaminant deposits on the surface of insulator at a time, under the wet condition that cause flow of highly leakage current, that leads to flashover. We choses the mixture of different salts, so...

The performances of outdoor polymeric insulators are influenced by environmental conditions. The use of polymeric materials in a particular composition can be produced insulators that are resistant to environmental influences. This paper presents the effect of artificial tropical climate on the hydrophobicity, equivalent salt deposit density (ESDD), surface leakage current, flashover voltage, a...

This report describes the natural contamination test results of ±800kV line insulators at high altitudes. Natural exposure tests with -816kV DC voltage energization were carried out at National Engineering Laboratory for UHV Engineering Technology (Kunming).The results showed that the strain type and V-type insulator strings show a lighter pollution and the insulators with a better aerodynamic ...

Low temperature molten salts have variety of applications in organic synthesis, catalytic processing, batteries and electrode position due to their air and water stability. They have wide potential window for their applications in voltage and temperature and hence there is a possibility to deposit metals which could not be deposited from aqueous electrolytes. Our aim and scope of our research w...

Traditionally, the design and maintenance of electric power facilities railways in bay areas have been carried out according to a uniform classification pollution based on distance from coast other factors. In order improve safety these save labor for maintenance, it is necessary subdivide this actual situation. Therefore, we propose method estimating Equivalent Salt Deposit Density insulator s...

Silicone rubber insulators are replacing the conventional ceramic and porcelain insulators rapidly in power transmission and distribution industry. Very limited field knowledge is available about the performance of silicone rubber insulators in polluted and contaminated environments and therefore need further investigation. A comprehensive analysis of silicone rubber sheets (intended for coatin...