| Title |
Development of the Countermeasure for Protective Coordination in DC-based Lighting System |
| Authors |
Nam-Kyu Hong ; Jin-Woo Park ; Chul-Ho Noh ; Gi-Hyeon Gwon ; Chul-Hwan Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2018.32.5.052 |
| Keywords |
DC Lighting System ; Energy Meter ; Protection System ; Protective Coordination ; SMPS |
| Abstract |
These days, DC distribution system is attracting attention as a promising technology to improve the efficiency of lighting system. In the case of DC-based lighting system, it is configured with the power conversion devices for DC supply, the energy meters for efficient energy operation, lighting loads, two cables. Since the power conversion device and the energy meter are composed of the power semiconductor which is vulnerable to the overcurrent. To protect such power semiconductor from overcurrent, these devices include the protective functions. However, the absence of protection coordination between the protective functions causes damage to power semiconductor and disrupts the continuity of power supply. Therefore, this paper analyzes the protective functions and fault characteristics of the DC lighting system, presents the problems caused by the absence of protective coordination, and proposes a countermeasure for coordination in the DC lighting system. |