![]() ![]() ![]() The results provide important reference for the insulators design, maintenance of operational transmission line insulators and flashover warnings. The exceptional level of pollution measured on those insulators, especially for the bottom surface for the non-soluble salt deposit density (NSDD) component, where the values are outside of the standard limit given in the currently IEC standard. The aperiodic occurrence of widespread contamination related outages cause serious damages to the transmission lines, the worst behavior is up to 500 kV overhead lines. The flashovers on insulators, caused by severe pollution, has posed the biggest threat on the safe operation of power systems the insulators contamination, and it is an important problem, special in polluted.
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