Document Type
Article
Publication Date
9-9-2024
Department
Department of Electrical and Computer Engineering
Abstract
This paper presents a wavelet-based differential protection algorithm for transmission lines. It uses restraint and operating components obtained with high-frequency components of a few kHz from instantaneous energy values of the real-time boundary stationary wavelet transform instead of low-frequency components from phasor estimation. It does not require capacitive current suppression as well. Therefore, the proposed method overcomes the limitations of conventional percentage differential protection. Furthermore, the proposed technique uses traveling wave theory to perform the current sample alignment at a few kHz, thereby, not requiring the global positioning system (GPS). The performance of the proposed method is evaluated through extensive simulation of 21,450 realistic cases contemplating internal faults, external faults, high-impedance faults, faults with outfeed, line energization, and CT saturation. When compared to a conventional percentage differential protection the proposed protection method is able to detect faults up to 5 times faster, presenting a success rate of 100% against 98,2% achieved by the conventional one.
Publication Title
IEEE Access
Recommended Citation
Prado, I.,
Costa, F.,
Silva, K.,
Medeiros, R.,
&
Mork, B. A.
(2024).
High-Frequency-Based Transmission Line Percentage Differential Protection with Traveling Wave Alignment.
IEEE Access,
12, 129404-129416.
http://doi.org/10.1109/ACCESS.2024.3456040
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/1105
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Version
Publisher's PDF
Publisher's Statement
© 2024 The Authors. Publisher’s version of record: https://doi.org/10.1109/ACCESS.2024.3456040