What does DLR stand for in the context of PJM Transmission?

In the context of PJM Transmission, DLR stands for Dynamic Line Rating. This term refers to a method of determining the maximum thermal rating of a transmission line based on current environmental conditions, such as wind speed and temperature. Unlike static ratings, which provide a fixed limit irrespective of external conditions, dynamic line rating allows for real-time adjustments based on actual weather and load conditions. This approach enhances the efficiency and reliability of electrical transmission systems by enabling higher power flow when conditions permit, thereby optimizing the use of existing transmission infrastructure.