Low-sampling frequency two-terminal traveling wave-based overhead transmission line protection
Document Type
Article
Publication Date
11-2023
Department
Department of Electrical and Computer Engineering
Abstract
Digital fault recorders (DFRs) and some conventional relays operate typically with sampling frequencies up to a few kHz. Conversely, traveling wave (TW)-based methods are usually designed to operate at sampling frequencies in the order of MHz. However, this paper demonstrates that two-terminal TW-based protection that considers the effects of the sampling frequency and TW propagation velocity uncertainties can protect transmission lines using sampling frequencies of a few kHz instead of MHz. This demonstration considers a performance validation based on challenging real-world faults recorded in transmission lines equipped with DFRs operating with a sampling frequency of 15,360 Hz. The low-sampling frequency two-terminal TW protection was implemented in hardware as a protective relay to evaluate actual data in real-time analysis, representing a significant step toward the practical application of the TW concept readily available in real protection devices with a low-sampling frequency.
Publication Title
Electric Power Systems Research
Recommended Citation
Costa, F.,
Lima, J.,
Aziz Jahan, M.,
Lopes, F.,
Silva, K.,
&
Dantas, K.
(2023).
Low-sampling frequency two-terminal traveling wave-based overhead transmission line protection.
Electric Power Systems Research,
224.
http://doi.org/10.1016/j.epsr.2023.109639
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/98