To restore power feeding as soon as possible and reduce repair costs and labor, a precise and robust fault location method for transmission lines is proposed. This method is based on the current and voltage synchronously collected by the phasor measurement units (PMUs) at two terminals of the line and does not require line parameters to calculate the fault distance. The line parameter is not approximately constant, but is affected by power load, temperature, and humidity, which affects the accuracy of most fault location algorithms that rely on line parameters. Therefore, the method proposed in this paper is robust and accurate. The method is based on the sequence fault component network and synchronous measurement technology, which is not affected by the system's pre-fault state, fault type, fault inception angle, and fault phase. Then, the method is verified in PSCAD/EMTDC by choosing different path resistances, fault types, fault inception angles, load currents, and line transpositions. A large number of simulation results show that the proposed method has high accuracy and robustness.
2. Magnago, F. H., "Fault location using wavelets," IEEE Trans. Power Del., Vol. 13, No. 2, 1475-1480, 1998.
3. Shu, H. C., X. H. Liu, and X. C. Tian, "Single-ended fault location for hybrid feeders based on characteristic distribution of traveling wave along a line," IEEE Trans. Power Del., Vol. 36, No. 1, 339-350, 2021.
4. Girgis, A., D. Hart, and W. Peterson, "A new fault location technique for two- and three-terminal lines," IEEE Trans. Power Del., Vol. 7, No. 3, 98-107, 1992.
5. Cozza, A. and Y. Z. Xie, "Surge compression for improved fault location accuracy in full transient-based methods," IEEE Sensors Journal, Vol. 21, No. 2, 995-1008, 2021.
6. Rui, F., Y. Liu, R. S. Diao, and S. B. Wang, "Precise fault location on transmission lines using ensemble Kalman filter," IEEE Trans. Power Del., Vol. 33, No. 4, 3252-3256, 2018.
7. Kumar, A. N., C. Sanjay, and M. Chakravarthy, "Fuzzy inference system-based solution to locate the cross-country faults in parallel transmission line," International Journal of Electrical Engineering Education, Vol. 58, No. 1, 83-96, 2021.
8. Kang, N. and J. X. Chen, "A fault-location algorithm for series-compensated double-circuit transmission lines using the distributed parameter line model," IEEE Trans. Power Del., Vol. 32, No. 3, 2398-2407, 2017.
9. Gopalakrishnan, D., M. Hamai, and S. McKenna, "Fault location using the distributed parameter transmission line model," IEEE Trans. Power Del., Vol. 15, No. 8, 1169-1174, 2000.
10. Karcius, M., K. M. Dantas, K. M. Silva, and K. M. Flavio, "Accurate two-terminal transmission line fault location using traveling waves," IEEE Trans. Power Del., Vol. 33, No. 3, 873-880, 2018.
11. Kezunovic, M. and B. Perunicic, "Automated transmission line fault analysis using synchronized sampling at two ends," IEEE Trans. Power Del., Vol. 11, No. 5, 121-129, 1988.
12. Ghorbani, A. and H. Mehrjerdi, "Negative-sequence network based fault location scheme for double-circuit multi-terminal transmission lines," IEEE Trans. Power Del., Vol. 34, No. 3, 1109-1117, 2019.
13. Dobakhshari, A. S. and M. Ranjbar, "A novel method for fault location of transmission lines by wide-area voltage measurements considering measurement errors," IEEE Trans. Smart Grid, Vol. 6, No. 5, 874-884, 2015.
14. Dobakhshari, A. S., "Wide-area fault location of transmission lines by hybrid synchronized/unsynchronized voltage measurements," IEEE Trans. Smart Grid, Vol. 9, No. 3, 186-192, 2018.
15. Azizi, S. and S. M. Pasand, "Fault location on multiterminal DC systems using synchronized current measurements," Int. J. Elect. Power Energy Syst., Vol. 64, 779-786, 2014.
16. Zhang, C. H., G. B. Song, and L. M. Yang, "Time-domain single-ended fault location method that does not need remote-end system information," IET Generation Transmission & Distribution, Vol. 14, No. 2, 284-293, 2020.
17. Preston, G., M. Radojevic, H. Kim, and V. Terzija, "New settings-free fault location algorithm based on synchronized sampling," IET Generation Transmission & Distribution, Vol. 5, No. 2, 376-383, 2011.
18. Jiang, J. A., Y. H. Lin, C. W. Liu, and J. C. Ma, "An adaptive PMU based fault detection/location technique for transmission lines. Part I: Theory and algorithms," IEEE Trans. Power Del., Vol. 15, No. 3, 486-493, 2000.
19. Liao, Y., "Fault location for single-circuit line based on bus-impedance matrix utilizing voltage measurements," IEEE Trans. Power Del., Vol. 23, No. 5, 609-617, 2008.
20. Yu, C. S., C. W. Liu, and S. L. Yu, "A new PMU-based fault location algorithm for series compensated lines," IEEE Trans. Power Del., Vol. 17, No. 2, 33-46, 2002.
21. Liao, Y. and S. Elangovan, "Unsynchronized two-terminal transmission line fault-location without using line parameters," IEE Proc. Gener. Transmiss. Distrib., Vol. 153, 639-643, 2006.
22. Feng, G. and A. Abur, "Fault location using wide-area measurements and sparse estimation," IEEE Trans. Power Syst., Vol. 31, No. 4, 2938-2945, 2016.
23. Zhao, L. H., J. W. Zhu, and B. Gu, "A new technique based on fundamental frequency positive sequence fault components for fault location," IEEJ Transactions on Electrical and Electronic Engineering, Vol. 15, 536-543, 2020.
24. Zhang, Y., J. Liang, Z. Yun, and X. M. Dong, "A new fault-location algorithm for series-compensated double-circuit transmission lines based on the distributed parameter model," IEEE Trans. Power Del., Vol. 33, No. 2, 3249-3251, 2018.
25. Liao, Y., "Transmission line fault location algorithms without requiring line parameters," Elect. Power Compon. Syst., Vol. 11, No. 11, 1218-1225, 2008.
26., , IEEE Guide for Determining Fault Location on AC Transmission and Distribution Lines, IEEE Standard C37.114TM-2004, 2005.