Which statement about dynamic line rating is correct?

Dynamic line rating (DLR) refers to a method that adjusts the electrical capacity of transmission lines based on real-time environmental conditions and loading. This means that DLR takes into account factors such as temperature, wind speed, and the amount of current flowing through the line. As weather and loading conditions change, DLR allows for the maximum capacity of a line to be determined and adjusted accordingly, ensuring that the grid can be more efficiently utilized and can adapt to fluctuating demands.

This responsiveness to real-time data stands in contrast to static measures that do not change regardless of external conditions, which is why the first option is not accurate. The third option is also misleading since DLR is applicable to high voltage transmission lines, rather than being limited to low voltage lines. Finally, while DLR may involve certain calculations for monitoring conditions, it is designed to automate and enhance the process of rating lines, often relying on technology that can streamline these calculations as opposed to requiring more manual effort than traditional methods. Thus, the correct statement is that it adjusts based on current weather and loading conditions.