Open AccessResearch on effect of lightning shielding level of EHVDC transmission line by installing coupling ground wire
Author(s) -
Yanhui Zou,
Yishi Yue,
Fuyong Huang,
Haiyue Wang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/310/3/032058
Subject(s) - lightning (connector) , electromagnetic shielding , arc flash , coupling (piping) , electric power transmission , ground , transmission line , tower , electrical engineering , shielded cable , lightning strike , engineering , structural engineering , physics , voltage , mechanical engineering , power (physics) , quantum mechanics
Lightning shielding failure is the main reason causing lightning flashover of Jiangcheng EHVDC transmission line because of the designed ground wire protection angle. Based on the electric-geometry model, a simulation model including the coupling ground wire is established by using MATLAB. The effect of the coupling ground wire at different height and horizontal position on lightning shielding failure flashover rate is analysed. Results show that coupling ground wire can reduce the lightning shielding failure flashover rate and the lightning shielding performance increases with the increase of the height of the wire and the horizontal distance between the axis of the tower and the coupling ground wire.