How Do Insulators Address The Risk Of Wire Breakage Caused By Lightning Strikes In Engineering Projects?

When an overhead line is struck by lightning, especially in the case of a "near strike" or induced overvoltage, the overvoltage propagates along the line to the insulation string or tower structure. The electrical and mechanical characteristics of polymer suspension insulator can enhance the line's ability to withstand voltage surges, delaying or blocking flashover or breakdown along the insulation path.

In practical implementation, the structure, installation method, surface condition, and environmental medium conditions of suspension type insulator determine the degree to which composite tension insulator acts as a buffer in lightning events. If high voltage transmission line insulators has a reasonable pollution distance, good surface anti-arc cracking cracks, and appropriate gap design, then the voltage surge caused by a lightning strike can be partially dispersed or reduced before entering the insulation path.