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Dynamic Line Rating (DLR) System

The DLR system featured a transmission line dynamic line rating and forecasting, transmission line clearance monitoring, and line conductor temperature monitoring.


  • Increase overhead line thermal capacity of between 10%-50% +more capacity, 95% of the time

  • Mitigation tool for transmission congestion

  • Increased transmission capacity at minimal investment

  • Increased situational awareness for operators

  • More efficient integration with renewables such as solar energy

Potential Application

  • The DLR system can be utilized in situation whereby transmission network constraints under contingency becomes an operational limitation.

  • In some cases, the limitation imposes generation constraints, which could lead to operational inefficiencies. The limit can be stretched by applying dynamic rating to selected lines which will bring in significant operational cost saving.

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