Analysis of lightning overvoltage with unbalanced element in Underground Transmission Cable System

지중송전계통에서 불평형요소에 따른 뇌과전압 해석

This paper analyses the transient phenomena against lightning surge on underground power cable systems. For analysis, several actual underground power cable systems are modeled using ATP. In lightning surge strokes, the various unbalanced conditions including the length of crossbonded lead, the breakdown of CCPU and distance unbalance are considered. This paper is expected to contribute the establishment of proper protection methods against transients on underground power cable systems.