RT Journal Article
A1 Chenhao Zhang
A1 Guobing Song
A1 Wei Han
A1 Guang Shi
A1 Chao Liu

PB iet
T1 Principle of ultra-high-speed protection for DC transmission line based on inversion transformation of wavefront
JN The Journal of Engineering
VO 2019
IS 16
SP 1382
OP 1387
AB Ultra-high-voltage transmission raises high demand for ultra-high-speed operation of relay. In this study, the fault information contained in travelling wavefront is analysed on the basis of frequency-dependent characteristic of transmission line parameters and broadband characteristic of the fault waveform. It can be concluded that the shape change of the fault mode current wavefront is related to the fault distance and the magnitude of the fault mode current wavefront is related to the transition resistance. Hence, a principle of ultra-high-speed protection for DC transmission line based on waveform inversion transformation is proposed. The simulation verifies the speediness and reliability of the principle.
K1 ultrahigh-speed protection principle
K1 travelling wavefront analysis
K1 fault mode current wavefront
K1 broadband characteristics
K1 ultrahigh-voltage transmission
K1 fault waveform characteristics
K1 reliability
K1 frequency-dependent characteristics
K1 ultrahigh-speed relay operation
K1 waveform inversion transformation
K1 DC transmission line parameter
DO https://doi.org/10.1049/joe.2018.8835
UL https://digital-library.theiet.org/;jsessionid=1sr8e9pt5kx2f.x-iet-live-01content/journals/10.1049/joe.2018.8835
LA English
SN
YR 2019
OL EN