Increasing system reliability/availability and reducing congestion with real time line ratings

Real time line ratings have been widely shown to increase the transfer capability of existing transmission lines by 10% to 30% without violating safety clearances and without exceeding the line´s design criteria including the conductor´s design temperature. The technology has been deployed to remove system constraints, mitigate congestion, facilitate market deregulation, maximize wheeling revenues, protect physical transmission assets, and to increase system reliability. Real time rating systems have the advantage of being fully integrated with the existing SCADA system. All functions are fully automatic; ratings are continuously displayed in a format familiar to system operators, and are also available to design engineers, planning engineers, state estimating programs, security analysis programs, etc. The systems are both cost and time effective. The cost of a real time rating system on a typical 30 km transmission line is 90% to 95% less than the cost of reconductoring the same transmission line. The systems can be fully operational in 90 to 120 days from date of order.