Dynamic Line Rating - Technologies and Challenges of PMU on Overhead Lines: A Survey

JAVIER A. ROSERO; MOMBELLO E. E.; DAVID L. ALVAREZ; CLAUS LETH BAK; F. FARIA DA SILVA

Coimbra

Conferencia; 51st International Universities' Power Engineering Conference; 2016

upec2016-IEEE

This article reviews direct and indirect methodsdeveloped for dynamic line rating on overhead lines, and theirapplications (reduction of bottlenecks, congestion costs, load shedding, among others) in the operation and control of power systems as smart grid technology. Besides, four elements for line rating computation and monitoring are identified, these are: sensors, communications, management information system and information analysis tools, which are part of integral dynamic line rating systems. Finally, the benefits and challenges of using phasor measurement units for real time capacity estimation on overhead lines are analyzed, highlighting the impact of weather changes along the entire line.