CROSSBOW allows increasing power transfer of transmission network systems in SEE
The growing electricity demand together with the electricity market require the higher loading of overhead lines that are approaching the permissible loading limits.
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) product aims to increase the power transfer of transmission network of the systems in the South-Eastern Europe (SEE) region when compared against the current practice i.e. static line ratings (SLR). Currently, the implemented method solely uses weather information for RT and FDLR calculation based on IEEE 738 standard and conductor characteristics of overhead lines.
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, etc.
Monitored data, by ELPROS partner, for a period of 20 days show that the majority of the time the loading of the lines based on dynamic line rating (DLR) can be higher than SLR and enables higher power transfer.
The figure above presents the monitored line with the current DLR value on the left side and the DLR and SLR trend for the period of 20 days on the right side.