Open AccessStudy on T-Connection Transmission Line Fault Location Method Based on Transient Fault Traveling Wave Signal
Author(s) -
Zhangzihao,
Yaoxiaodong
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1518/1/012078
Subject(s) - fault (geology) , transient (computer programming) , transmission line , reflection (computer programming) , electric power transmission , line (geometry) , transmission (telecommunications) , fault indicator , signal (programming language) , transient voltage suppressor , engineering , traveling wave , acoustics , voltage , electronic engineering , fault detection and isolation , electrical engineering , control theory (sociology) , computer science , physics , mathematics , mathematical analysis , geometry , geology , seismology , artificial intelligence , programming language , operating system , control (management) , actuator
Aiming at the fault location of T-type transmission lines, which are susceptible to the influence of wave speed and transmission line length, this paper proposes a method of T-type transmission line fault location based on transient fault traveling wave information. Based on the fault reflection traveling wave generated at the fault point of the transmission line when a fault occurs, this paper detects the current and voltage traveling wave of the transmission line before and after the fault occurs through a current and voltage collector, and uses the non-stationary signal analysis to obtain the fault line The initial time of the wave reflection to the transmission line port is obtained by simplifying the formula to obtain the modal maximum value of the initial time of the transient fault traveling wave. The modal maximum value of the initial reflected traveling wave time is brought into the calculation formula of the fault branch location criterion. Finally determine the fault distance. Experimental results based on PSCAD show that the method has better accuracy and efficiency than traditional fault analysis methods.