Traveling Wave-Based Improved Protection Scheme for Transmission Line

Transmission lines have significantly expanded to meet the growing power demand. The complexity of modern power transmission systems has increased due to the incorporation of various types of power generation. This has necessitated enhancements to the protection system to accommodate the impact of different power sources. Unlike traditional methods that rely on voltage and current phasor measurements, our proposed method is independent of these measurements. Instead, it leverages relative traveling wave phenomena to detect and locate electrical faults, enabling prompt actions to address them. The proposed algorithm has been validated using double-circuit transmission lines and has demonstrated outstanding performance in fault analysis. Furthermore, traveling waves have been utilized to measure the length of the transmission line and classify faults. To validate the proposed scheme, various faults have been simulated in PSCAD/EMTDC, and the results have successfully verified the effectiveness of the algorithm under different conditions.