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This is the second in a two-part paper series dealing with sea salt transportation and deposition mechanisms, and discussing the serious issue of degradation of outdoor insulators resulting from various environmental stresses and severe saline contaminant accumulation near the shoreline. The deterioration rate of outdoor insulators near the shoreline depends on the concentration of saline in the atmosphere,...
The present paper is an experimental investigation of the impact of wind speed on the pollution accumulation rate on outdoor insulators near coastal areas. Outdoor insulators near shoreline suffer from rapid saline accumulation due to heavy wind coming from the seashore, which is more dangerous in foggy weather conditions. A method was developed in laboratory to evaluate the impact of wind velocity...
This paper describes an experimental study of the contamination process on AC energized high voltage insulators under winter conditions. An open loop wind tunnel is installed inside a climate chamber and is operated with a kaolin powder generator and NaCl salt injection system. Through systematic laboratory investigations, the variations of salt deposit density (SDD) with the wind speed were analyzed.
An experimental setup has been developed to simulate the road salt deposit process on energized high voltage insulators under one set of winter conditions. The variation in accumulation rate of salt deposit density (SDD) with wind speed was established through systematic laboratory investigations. Tests were made with and without normal ac line voltage stress to explore the combined effect of wind...
A string of classic glass insulators and fog-type porcelain insulators were subjected to the simultaneous effects of ac high-voltage, hard rain and wind. The experiments were performed in a cold room with a H.V. transformer of 125 kVA, 120 kV. A high voltage, 15 kV per unit insulator, was applied to a vertical string of insulators during the icing period. When the thickness of ice on the monitoring...
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