[SIST Student Seminar] Research of New Fault Location Methods in Power Network Based on Traveling Waves

ON2024-05-14TAG: ShanghaiTech UniversityCATEGORY: Lecture

Topic: Research of New Fault Location Methods in Power Network Based on Traveling Waves
Speaker: Xu Yun’an
Date and time: May 17, 13:00
Venue: SIST 1C-101
Host: Liu Yu

When a fault occurs in a power network, the fault current propagates from the fault location to the end of the line in the form of traveling waves. The traveling wave fault information can be collected and the arrival time of wave front and speed of traveling wave are utilized to achieve accurate fault location. Compared with other fault location methods, the principle of traveling wave based method is relatively simple. It only needs the fault waveform within a short time after the fault occurs. The high-frequency information of the fault waveform can be collected to achieve fault location.
In this talk, traveling wave based fault location methods are introduced. Firstly, with multi-point measurement, continuous wavelet transformation (CWT) is introduced to capture arrival time of traveling wavefronts and the location logic in complex power network is proposed. Secondly, with only local measurement, the relationship between the fault location and polarity, intensity and arrival time of traveling wave is deduced under different power network topologies. The fault location method under velocity uncertainty is proposed with such information.


Xu Yun’an received his bachelor degree in Electrical and Electronic Engineering from ShanghaiTech University in 2021. He is currently pursuing his master’s degree in Electronic Science and Technology at ShanghaiTech University. His research interests include travelling wave based fault diagnosis methods in transmission lines.