What is the primary role of a grounded conductive fence around substations?

The primary role of a grounded conductive fence around substations is to ensure safety and prevent electric shock. These fences are designed to provide a low-resistance path to ground in the event of an electrical fault. When a fault occurs, such as a short circuit, the fence helps to direct excess electrical energy safely into the ground, thereby minimizing the risk of electric shock to individuals who might come into contact with the fence. By being grounded, the fence effectively reduces the voltage that could be transferred to a person, ensuring a safer environment around high-voltage areas.

This safety measure is crucial in substations where high voltages are present, as it helps protect workers and the public from potentially life-threatening electrical hazards. Other purposes like enhancing aesthetics or marking property lines are not central to the function of these fences, and while they may play secondary roles, the paramount concern remains safety and the prevention of electric shock.