Open AccessSingle-pole grounding fault location method for flexible HVDC transmission lines
Author(s) -
Jingfei Bian,
Weixia Dong,
Jiongdei Liu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/546/5/052013
Subject(s) - fault (geology) , ranging , matlab , electric power transmission , transmission line , transmission (telecommunications) , engineering , electronic engineering , ground , computer science , line (geometry) , control theory (sociology) , electrical engineering , telecommunications , mathematics , artificial intelligence , geometry , control (management) , seismology , geology , operating system
One of the key problems of flexible HVDC transmission line is HVDC transmission fault location. A fault location method based on an improved traveling wave natural frequency flexible HVDC transmission line single-pole ground fault is proposed. The integrated empirical mode is used to decompose the fault signal to obtain the required traveling wave component, and then the improved MUSIC algorithm is used, according to the frequency spectrum analysis obtains the natural main frequency, and uses the relationship between the natural frequency and the fault distance to gain the fault location. Finally, use PSCAD to build simulation for simulation test and combine MATLAB fault location algorithm program to get the fault distance. The simulation results show that the proposed ranging algorithm is not affected by transition resistance and fault distance, and can accurately obtain the fault point distance, which shows the feasibility and effectiveness of the proposed fault ranging method.