전차선로에서의 뇌격에 의한 가공지선과 보안기의 차폐효과

Effects of an Overhead Ground Wire and Surge Arrester in the Railway due to Lightning Strokes

Using the EMTP(Electro Magnetic Transient Program) for the analysis of lightning direct voltage on the railway system, the shielding effects of overhead grounding wire on the railway were studied quantitatively. Installation of overhead ground wire and gap-type arrester such as s-horn Provides a 6.6㎸ HV distribution line with good protection effects. Even severe lightning induced voltage were create, 6.6㎸ HV lines can be withstand.