| Title |
Analysis of Transient Voltage by Lightning Stroke at 345kV Step-up Transformer |
| Authors |
Man-Yong Jo ; Ho-Jeon Shin ; Jae-Sern Her ; Jae-Chul Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2012.26.10.095 |
| Keywords |
Insulation Coordination ; BIL(Basic Impulse Insulation Level ; EMTP-RV ; GIS(Gas Insulated Switchgear) ; GIB(Gas Insulated Bus) |
| Abstract |
Typically, large scale power generation facilities are linked to 345kV transmission line through a step-up transformer. If the value of transient voltage by generating lightning stroke is large more than electric equipment’s BIL, devices insulation is destroyed. LA(Lighting Arrester) is used as a main means of prevention. However, the installation of LA takes the constraints of installation place and expensive installation costs. Therefore, we need to carefully study whether installation of installation can be omitted and the most efficient place of installation. In this paper, we simulated the transient voltage detected by lightning stroke at each equipments in the 345kV transmission power grid by using EMTP-RV program. |