| Title |
Open-Phase Condition Detecting System for Transformer Connected Power Line in Nuclear Power Plant |
| Authors |
하체웅(Ha, Che-Wung) ; 이도환(Lee, Do-Hwan) |
| DOI |
https://doi.org/10.5370/KIEE.2015.64.2.254 |
| Keywords |
Open-phase Condition ; Nuclear Power Plant ; Electromagnetic Transient Program ; Transformer |
| Abstract |
On January 30, 2012 an auxiliary component of Byron Unit 2 was tripped on bus under voltage. The cause of the event was the failure of the C-phase insulator track for the Unit 2 station auxiliary transformer(SAT) revenue metering transformer. In addition to this event, other events have occurred at other plants resulting in an open-phase condition.[1] Therefore, Nuclear Regulatory Commission(NRC) has requested that not only nuclear power plant(NPP) operating company but also its Design Certification(DC) applicant have to prepare open-phase detecting system in their operating plants and design document. In this paper, various open-phase conditions are simulated in NPP using Electromagnetic Transient Program(EMTP) and Atpdraw, and open-phase condition detecting system is proposed for Main Transformer(MT), Unit Auxiliary Transformer(UAT) and SAT connected power line in NPP. |