The increase in intermittent renewable energy generation, such as wind and solar, is essential for the energy transition. However, in order to integrate it efficiently, new approaches are needed to optimize the operation of the electrical system, increasing the flexibility and resilience of the transmission network. One solution that can contribute to these improvements is the implementation of Dynamic Line Rating (DLR), a technology that dynamically adjusts the capacity of transmission lines based on real-time weather data or data from the circuits themselves.

The technology was discussed by Julia Spiegel, lead analyst in the Networks area at PSR, during the seminar “Innovations in Electric Power Transmission: Technologies and Financing,” held by the Ministry of Mines and Energy in December.

“DLR is basically a system that uses real-time measurements to adjust the capacity of transmission lines based on weather data or even conductor data. This data can be radiation, wind, circuit resistance, among others. For example, on a colder day, using this data, it is possible to relax the thermal limit of the transmission line and use more or less of the network to transmit energy, thus optimizing the use of transmission systems,” explains Julia.

The event brought together experts, companies and authorities from the sector to discuss cutting-edge technologies and new financing models. On the occasion, the PSR specialist presented how DLR can transform the operation of the electrical grid, especially in a scenario of high penetration of intermittent energy sources that use the system’s circuits in a dynamic and variable manner throughout the days and seasons of the year.

The presentation included successful international examples and highlighted a case study carried out by PSR in Brazil, in partnership with ISA Energia Brasil. The project demonstrated how DLR is capable of significantly increasing the capacity of transmission lines, avoiding cuts in wind power generation and optimizing the operation of circuits in the South of the country.

PSR’s participation reinforces its leading role in the development of solutions for the energy transition. DLR, although dependent on investments in technology and integration with existing systems, represents a crucial advance in ensuring efficiency, safety and flexibility in the operation of transmission networks.

The recording of the event can be viewed here.