Abstract:
In Pakistan power network comprises of 500KV, 220KV, 132KV, 66KV and 33KV transmission lines and 11KV power distribution systems. Numbers of insulators are used in connected units in the shape of strings with transmission lines as per insulation requirements with proper design according to the various kinds of pollution stresses. The transmission lines are passing from or near polluted areas and very dusty plains of Punjab and Sindh provinces. Practices are being used in these transmission lines for removal of accumulated contamination of insulators by periodic cleaning twice a year or de-energized. Transmission lines. Even then discontinuation of supply takes place in the polluted areas in foggy weather. Special technique of using water repellent (Room Temperature Vulcanizing) silicone coating/paint has been introduced on high voltage disc Insulators to minimize the outage in power network in Pakistan. Especially in high pollution areas near Chemical Factories and near brick kilns etc comparison study of coated and uncoated disc Insulators have been carried out by ESDD (Equal Salt Deposit Density) measurement in salt fog chamber.
Page(s):
1-8
DOI:
DOI not available
Published:
Journal: New Horizons: Journal of the Institution of Electrical & Electronics Engineers Pakistan, Volume: 42, Issue: 1, Year: 2003