한국해양대학교

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탄소블록과 동봉의 접지성능 비교분석

Title
탄소블록과 동봉의 접지성능 비교분석
Alternative Title
Comparative Analysis on Grounding Performance for a Carbon Block and a Copper Rod
Author(s)
서재석
Issued Date
2013
Publisher
한국해양대학교
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002176059
http://repository.kmou.ac.kr/handle/2014.oak/10393
Abstract
a carbon block(1[m], Φ245[mm]) and a three-linked copper rod of equilateral triangles with 1[m] spacing. Ground impedance depending on applied current source was evaluated by the application of a sine wave current in ranges of 60[Hz]∼3.5[MHz], a fast-rise pulse with rising time of 200[ns], a standard lightning impulse of 8/20[μs] and a 600[Hz] square wave. Ground impedance for both electrodes were almost the same value below 100[kHz], and increased rapidly afterwards. The maximum ground impedance appeared 400[Ω] at around 1.5[MHz]. Ground impedance of the carbon block was lower at the square wave and was higher at the fast-rise pulse than that of the copper rod. Also, ground impedance as ages showed no difference for the last 8 months. From the results, it is likely that ground performance for both electrodes shows no difference against commercial frequency and lightning impulse current, while the copper-rod shows better performance against a fast-rise pulse with rise-time of a few hundred [ns].
This thesis dealt with the comparative analysis on grounding performance of a carbon block and a copper rod. Two types of grounding systems buried at a depth of 0.8[m] were compared
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전기전자공학과 > Thesis
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