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A Study on Overvoltage Reduction Method of Single Point Bonded Section on Combined Transmission Lines  

Jung, Chae-Kyun (한전 전력연구원)
Kang, Ji-Won (한전 전력연구원)
Park, Hung-Sok (한전 전력연구원)
Kim, Jin (한전 전력연구원)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.10, 2009 , pp. 1881-1887 More about this Journal
Abstract
This paper discusses the effects of ECC (Earth Continuity Conductor) for reducing the level of induced sheath overvoltages at the single point bonded section of combined transmission lines which are mixed underground power cable with overhead line in one T/L. In previous papers, the characteristics of ECC on only underground power cable systems were sufficiently analyzed. However, the result of only underground power cable systems are totally different from that of combined transmission lines because ECC is commonly grounded with overhead grounding wire at mesh of cable head. Therefore, in this paper, the installation effects of ECC have been variously analyzed considering the three kinds of fault positions, cable formation of duct and trefoil, spacing between phase conductor and ECC, and the change of overhead transmission line section length on 154kV combined transmission line. Finally, simulation results show that ECC can effectively reduce the induced sheath voltage.
Keywords
ECC; Single point bonded section; Combined transmission lines; Overhead transmission line section;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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