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National Grid is trialling the use of dynamic line rating technology to unlock spare capacity on the electricity transmission network.
The system has already been trialled on National Grid’s networks in the US and will now be deployed for the first time in Great Britain on a 275kV circuit between Penwortham and Kirkby in Cumbria.
Power lines have historically been operated using static line ratings calculated using conservative and static values for assumed weather conditions.
The technology developed by LineVision, comprising sensors and data analytics software, allows dynamic line ratings to be determined in real-time based on the physical and electrical properties of the power line, including its size, resistance and maximum safe operating temperature, and forecast weather conditions.
National Grid said the two-year trial has the potential unlock 0.6GW of spare capacity on the overhead power line and save £1.4 million per year through reduced constraint payments.
Lydia Ogilvie, director of network strategy and operations for National Grid, said: “To meet the increasing demand for electricity and deliver net zero our network needs to grow, but at the same time we are continually looking at ways of expanding capacity on our existing infrastructure.
“I’m proud that National Grid is leading the way in using transformational and innovative engineering, integrating vital grid enhancing technologies like LineVision’s, to decarbonise and deliver world class reliability, at lowest costs for consumers.”
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