Assessment of Lightning Arrester Location in Combined Transmission Line Connected whth Overhead Line and Underground Cable

가공송전선로와 지중송전선로가 연계된 혼합송전선로에서 피뢰기 적정위치 검토 및 평가

This paper describes the assessment of proper location of lightning arrester in combined transmission line which is connected with overhead line and underground cable. The modeling for simulation is established using the actual system in ATP Draw and EMTP. Simulation is carried out to find out the best point to install the arrester in given the model system. And also voltage and current is analyzed on cable covering protection unit(CCPU). The simulation result demonstrated the best location of arrester in the given transmission line through the detailed analysis and its assessment.