CROSSBOW solutions to increase the power transfer of transmission network
Real-time (RT) and forecasted dynamic line rating (FDLR) for overhead lines module as part of the CROSSBOW Regional Operation Centre Balancing Cockpit (ROC-BC) aims to increase the power transfer of transmission network of the systems in the SEE region when compared against the current practice i.e. static line ratings (SLR).
Dynamic Line Rating (DLR) module is in operation since September 2020 when 4 overhead lines from Croatia were initially configured and monitored. In July 2021 additional 34 lines from Serbia were included, expanding the FDLR coverage and monitoring of Overhead Lines (OHLs) in the SEE region.
The FDLR serves as the input data for intraday (IDCF), day-ahead (DACF), and two days ahead (D-2) congestion forecast process, as well as security analysis (SA), intraday and day-ahead capacity calculation.
The figure below presents one example of overhead lines included in the DLR module on the left side and the DLR and SLR trend for the period of 6 days on the right side for overhead lines in substation Bajina Bašta (Serbia).
Monitoring of the configured lines will analyze the difference between the static line rating and dynamic line rating based on weather data. Based on this analysis the possibilities for higher power lines loading will be taken in account for security analysis, intraday, and day-ahead capacity calculation, thus offering an alternative approach to minimize congestions by expanding the effective cross-border transfer capacity of OHLs.