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Environmental pollution effects on insulators of high voltage overhead transmission line for locomotives.

dc.contributor.advisorSaha, Akshay Kumar.
dc.contributor.authorMabunda, Trevor Teron.
dc.descriptionMasters Degree. University of KwaZulu-Natal, Durban.en_US
dc.description.abstractThe primary focus of this research is to report thoroughly on the addressed key questions of the proposal and to successfully compile a simulation based on environmental pollution effects on insulators of high voltage overhead transmission line for locomotives. The simulation design is done on FEMM, which provides useful models for solving electromagnetic problems, which will assist to compile a suitable insulation model design with results that can be interpreted in detail. This report includes the theoretical background of a high voltage insulator for different materials with different sizes and shapes affected by different environmental conditions. Ceramic insulators appear to be extremely susceptible. Polymeric insulators specially of silicone-rubber have achieved better performance under polluted states and have found increasing usage. The feasibility study conducted shows that the simulation design is feasible and transparent. The IEEE and ScienceDirect publications are the suitable sources that are used to conduct the literature review. The method used to collect data and information or research strategy which summarizes the way in which research will be undertaken is conduced. Furthermore, the preliminary research results and analysis evolve after investigating and analyzing the electric field distribution of a polymeric insulator, which is commonly used on high voltage overhead transmission line for locomotives when it is dry and when a water drop is applied with and without a corona ring. In the three cases investigated, the first case is when the insulator was dry, the second case is when water droplets reside as a discrete droplet on a polymeric insulator made of a silicon rubber material and the third case is when the corona ring is added, simulation was executed for both typical and optimized insulators. It was found that the presents of water droplets on the insulators either due to rain, fog, etc. leads to electric field enhancement causing partial discharge and dry arc which ultimately results in complete flashover. The current work has resulted in a simple model to estimate the flashover voltage of a polymeric insulator under contaminated states. To ensure reliability, simulation results are compared with existing work carried in the past.en_US
dc.subject.otherElectrical energy.en_US
dc.subject.otherPolymeric insulator.en_US
dc.subject.otherOverhead electric lines--Environmental aspects.en_US
dc.titleEnvironmental pollution effects on insulators of high voltage overhead transmission line for locomotives.en_US


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