Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1997.07e
- /
- Pages.1843-1846
- /
- 1997
A Simulation of Lightning Faults Reducing Effects on the 154 kV Transmission Tower by Auxiliary Grounding
보조접지선 시공에 의한 송전선로의 내뢰성 향상효과 모의
-
Kwak, Joo-Sik
(Korea Electric Power Research Institute)
;
- Shim, Jeong-Woon (Korea Electric Power Research Institute) ;
-
Shim, Eung-Bo
(Korea Electric Power Research Institute)
;
-
Choi, Jong-Gi
(Korea Electric Power Research Institute)
- Published : 1997.07.21
Abstract
This paper describes the fault reducing effects of the 154 kV transmission tower by auxiliary grounding from the top of the tower to ground. The grounding surge impedance of the auxiliary grounding system is calculated by CDEGS(:Current Distribution Electromagnetic Interference Grounding and Soil Structure Analysis), and the critical lightning back flashover current and arcing horn dynamic characteristics are simulated by EMTP/TACS(:Electromagnetic Transient Program/Transient Analysis of Control Systems). The calculated results of total LFOR(Lightning Flashover Rate) shows that the LFOR can be reduced from 5.2(count/100km. year) to 3.4 by auxiliary grounding on the 154 kV transmission tower with one ground wire shielding system.
Keywords