A fault location method based on high frequency attenuation characteristic of UHVDC transmission line

• Published in: Dianli Xitong Baohu yu Kongzhi Vol. 42; no. 10; pp. 77 - 83
• Main Authors: Chen, Shi-Long, Zhang, Jie, Bi, Gui-Hong, Xie, Jia-Wei, Shu, Hong-Chun
• Format: Journal Article
• Language: Chinese
• Published: 16.05.2014
• Subjects: Attenuation; Computer simulation; Fault location; Faults; High frequencies; Mathematical models; Position (location); Transmission lines
• ISSN: 1674-3415

When HVDC transmission lines fault, the high frequency transient signal travels along the lines, and the high frequency component attenuates during the course. The phase-model transform is analyzed, the frequency characteristic of double-poles UHVDC transmission lines is studied, and the conclusion that the UHVDC transmission lines attenuate the high frequency component, the UHVDC transmission line is longer, the attenuation is acuter is drawn. The single-ended fault location theory of UHVDC transmission line based on high frequency attenuation characteristic is studied, the distance calculation formula of fault position is deduced, and the conclusion that the single-ended fault location theory of UHVDC transmission line based on high frequency attenuation characteristic can not realize the fault location exactly is drawn. The double-ended fault location theory of UHVDC transmission line based on high frequency attenuation characteristic is studied, the distance calculation formula of fault position is deduce