K. W. Park, 2014, Status and Prospect for DC distribution Technology of Low voltage, Journal of Electrical world Monthly magazine, No. 453, pp. 61-67

Y. Park, H. S. Jung, C. M. Park, S. H. Jang, 2011, Implementation of a Condition Monitoring System for Mold Transformers in DC Substations, The Transactions of The Korean Institute of Electrical Engineers, Vol. 60, No. 9, pp. 1788-1794

2018, Korea Electro-Technical Code (KEC), Korea Electric Association

S. Y. Kim, S. H. Lee, J. O. Kim, 2012, The economic evaluation of renewable energy penetration based on grid parity according to the ratio of DC power supply, Transactions of the Korean Institute of Electrical Engineers, Vol. 61, No. 1, pp. 16-21

Y. S. Kim, J. M. Kim, 2005, Study on the effective earthing method in underground section of railways, Fall Conference of the Korean Society for Railway, pp. 767-775

H. S. Jung, Y. Park, H. C. Kim, 2010, Smart Grid and Intelligent Railway Power Grid, Journal of Railway, Vol. 13, No. 6, pp. 41-48

S. K. Choi, W. S. Kwon, Y. J. Lee, C. H. Ban, G. H. Choi, 2010, Analysis of Arc Characteristics in DC Distribution System, Summer Conference of the The Korean Institute of Power Electronics, pp. 111-112

J. Shea, 2007, Conditions for Series Arcing Phenomena in PVC Wiring, IEEE Transactions on Components and Packaging Technologies, Vol. 30, No. 3, pp. 532-539

Lim D.S., Kim J.O., 2019, Reducing Damage from Arc-Flash Accident with Ultraviolet Wavelength and Noise Detection, Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, Vol. 33, No. 4, pp. 56-65

Y. S. Park, K. M. Na, Y. Park, 2018, An Implement of Vision based Measurement Technology for Traction Power System up to 250 km/h, The Transactions of the Korean Institute of Electrical Engineers, Vol. 67, No. 7, pp. 976-980

Y. Park, Y. H. Cho, S. Y. Kwon, K. Lee, W. H. You, 2011, Development of an Arc Detector Assessment System by Loss of Contact Between Pantograph and Contact Wire in Electric Railway, The Transactions of the Korean Institute of Electrical Engineers, Vol. 60, No. 11, pp. 2171-2175

D. S. Lim, J. O. Kim, 2019, Reducing Damage from Arc-Flash Accident with Ultraviolet Wavelength and Noise Detection, Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, Vol. 33, No. 4, pp. 56-65