| Title |
Transferred OverVoltages on LV sides in Multigrounded Neutral during Line to Ground Fault on Distribution Systems |
| Authors |
최선규(Choi, Sun-Kyu) ; 최종기(Choi, Jong-Kee) ; 김경훈(Kim, Kyoung-Hun) ; 최명호(Choi, Myeong-Ho) ; 이병성(Lee, Byung-Sung) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.6.910 |
| Keywords |
Transferred overvoltage ; Multi-grounded neutral ; Line-Neutral fault ; EMTP ; Field test |
| Abstract |
In this paper we propose multi-grounded neutral design method which was considered of transferred transient overvoltage when line to neutral fault occurs. Specially, In order to confirm the actual transient overvoltage magnitude which occurs on neutral line, we considered some screening(shielding) effects. The screening coefficient was deducted from field test results and calculation in a distribution line which is identical with an actual power line. The purpose of this paper is to attempt to suggest the guidance for grounding skystem design considering limitation of overvoltage for LV side in IEC 61936. The result is based on EMTP simulation and real field faults situation in distribution lines. |