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http://dx.doi.org/10.5370/KIEEP.2010.59.2.191

Analysis on the Induced Lightning Shielding Effect According to the Neutral Wire Installation Structure of a 22.9kV Distribution Line  

Kim, Jeom-Sik (대원전기(주) 부설연구소)
Kim, Do-Young (대원전기(주) 부설연구소)
Park, Yong-Beom (대원전기(주))
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.59, no.2, 2010 , pp. 191-196 More about this Journal
Abstract
The electricity distribution system in Korea is adopting a multi-grounding system. Protection of this distribution system against lightning is performed by installing overhead ground wires over the high voltage wires, and connecting the overhead ground wires to the ground every 200 m. The ground resistance in this system is limited not to exceed $50\Omega$ and overhead ground wire and neutral wire are multiple parallel lines. Although overhead ground wire and neutral wire are installed in different locations on the same pole, this circuit configuration has duplicated functions of providing a return path for unbalanced currents and protecting the distribution system against induced lightning. Therefore, the purpose of this study is to analyze the induced lightning shielding effect according to the neutral wire installation structure of a 22.9kV distribution line in order to present a new 22.9kV distribution line structure model and characteristics. This study calculated induced lightning voltage by performing numerical analysis when an overhead ground wire is present in the multi-grounding type 22.9kV distribution line structure, and calculated the induced lightning shielding effect based on this calculated induced lightning voltage. In addition, this study proposed and analyzed an improved distribution line model allowing the use of both overhead wire and neutral wire to be installed in the current distribution lines. The result of MATLAB simulation using the conditions applied by Yokoyama showed almost no difference between the induced lightning voltage developed in the current line and that developed in the proposed line. This signifies that shielding the induced lightning voltage through overhead wire makes no difference between current and proposed distribution line structures. That is, this study found that the ground resistance of the overhead wire had an effect on the induced lightning voltage, and that the induced lightning shielding effect of overhead wire is small.
Keywords
Distribution Line; Induced Lightning; Neutral Line; Shielding Effect; Overhead Ground Wire(OHGW);
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  • Reference
1 S. Rusck, "Induced Lightning Over-voltages on Power -Transmission Lines with Special Reference to the Over-Voltage Protection of Low Voltage Networks", Trans. Royal Institute of Technology, Stockholm, Sweden, 1958.
2 P. Chowduri, "Voltages Surges Induced on Overhead Lines by Lightning Strokes", Proc. IEE, Vol.116, pp.561-565, 1969
3 P. Chowduri, "Lightning-Induced Voltages on Multiconductor Overhead Lines", IEEE Transactions on Power Delivery, Vol. 5, No.2, pp.658-667, 1990   DOI   ScienceOn
4 S. Yokoyama, "Calculation of lightning-induced voltages on overhead multiconductor systems", IEEE Trans. on Power Apparatus Systems, Vol. PAS-103, No.1, Jan. 1984.
5 S. Yokoyama, "Analog Simulation of Lightning Induced Voltages and Its Application fir Analysis of Overhead-Ground-Wire Effects", Proc. IEE, Vol. 132, part C, pp. 208-216, 1985
6 우정욱, 심응보, "낙뢰측정에 대한 기술동향과 LPATS 데이터에 의한 한반도 낙뢰현황", 조명.전기설비학회지 제17권 제4호, pp.16-23, 2003.
7 C. F. Wagner and G. D McCann, "Induced Voltage on Transmission Lines", AIEE Trans, Vol. 61, pp.916-930, 1942
8 松山彰, "送電線雷害防止對策", 電氣評論, 1997
9 宮崎輝, "配電線の雷害對策", 電氣評論, 2006.
10 M. Ishii 外, "Multistory Transmission Tower Model for Lightning Lurge Analysis", IEEE Trans. on Power Delivery, Vol. 6, No.3, pp. 1327–1335, 1991.   DOI   ScienceOn
11 전력연구원, "절연설계 신뢰도 향상을 위한 뇌격측정 설비구축에 관한 연구", 최종보고서, 2003.
12 우정욱 외, "낙뢰측정 네트워크를 위한 감지기 사이트 서베이와 낙뢰감지율 검토", 전기학회논문지 제55C 제11호, pp. 532-537, 2006.