| Title |
Analysis of Lightning Overvoltage and Shielding Effect of Arrester and Overhead Grounding Wire on DC Railroad |
| Authors |
정채균(Jung, Chae-Kyun) ; 홍동석(Hong, Dong-Suk) ; 이종범(Lee, Jong-Beom) ; 조한구(Cho, Han-Goo) |
| Keywords |
DC railroad ; Grounding wire ; Lightning arrester ; Lightning overvoltage ; Shielding effect |
| Abstract |
This paper presents the influence of the lightning overvoltage and the shielding effect of lightning arresters and overhead grounding wires on the DC railroad systems. Modeling of railroad system is established in ATPDraw to perform the simulation and the line constants of railroad were calculated using ATP_LCC. When a direct lightning strikes to the DC railroad, the result of simulation reveals that the shielding effect of arresters is reduced at messenger, trolly-wire, and the shielding effects of overhead grounding wire is over 90% than the case which does not include it. Therefore it is evaluated that overhead grounding wires should be installed in the DC railroad line. |