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RISS 인기검색어
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- 저자 : 우정욱(J. W. Woo) (검색결과 45 건)
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우정욱(J.W. Woo),곽주식(J.S. Kwak),강연욱(Y.W. Kang),권동진(D.J. Kwon),문재덕(J.D. Moon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Since 1996, KEPCO has been operating a wide range lightning detection system, LPATS, and been accumulating relative application technics and statistical analysis skills. So, KEPRI already has its own basis to develope more accurate advanced detection technology and references to do comparative study. For Three-dimensional imaging of lightning channels, UHF/VHF antenna systems were installed at 2 sites. The distance between two sites is about 30 ㎞. In this paper, we would like to introduce about our system and its results.
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낙뢰측정 네트워크 (KLDNet)를 위한 감지기 사이트서베이와 낙뢰 감지율 검토
禹貞旭(J. W. Woo),郭周植(J. S. Kwak),文在德(J. D. Moon) 대한전기학회 2006 전기학회논문지C Vol.55 No.11
Lightning induced faults accounts for more than 66% at the transmission lines of KEPCO. The lightning causes damages to power system equipments including transmission line, the blackout of electricity and the electro-magnetic interference. Because of this reason, we need the real time lightning information for the optimal operation of power system. And, it is required to obtain and accumulate the lightning current parameters for the insulation design. In 2005, KEPRI constructed a lightning detection network, the KLDNet (i.e. Kepco Lightning Detection & Information System) and launched a lightning information service for KEPCO customers. It is intended to provide data service on the operation of transmission lines and collect lightning-related data, which is the most important factor regulating power system design and operation. The new system will replace LPATS, the old detection system, which has been operating since 1995 and is rapidly failing in terms of both detection performance and location accuracy. The purpose of this paper is to explain the work performed and the results of that work in performing a site survey of several locations. The purpose of the site survey is to find locations acceptable for the installation of a lightning location receiver in support of a Lightning detection system(LDS). A restriction was placed on the surveyed locations, as they must belong to the Korea Electric Power Company. This requirement was made to facilitate the communication needs of the LDS network. Total of 15 sites were evaluated as possible LDS sensor sites. Some of the sites were rejected for physical reasons and therefore no electrical testing was performed. Of the 15 sites, total of 10 sites were considered acceptable and 5 sites were rejected for various reason. In this paper, we would like to explain the site survey and detection efficiency for LDS.
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구교선(K. S. Koo),권동진(D. J. Kweon),우정욱(J. W. Woo),곽주식(J. S. Kwak) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월
This paper describes temperature characteristics with load for 154kV power transformer. We insert the optical fiber sensors in order to measure the temperature depending on the position. We analyze the temperature distribution when load of 154㎸ power transformer is changed from 30% to 120%, As the results, temperatures is measured from 36.3℃ up to 125.2℃ at the top of high voltage winding and is measured from 32.4℃ up to 103.3℃ at the top of low voltage winding. The temperature of low voltage winding is the most highest than other location of winding for 154kV power transformer.
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낙뢰의 3차원 관측 위한 AOA 방식 낙뢰감지기 설계에 관한 연구
禹貞旭(J. W. Woo),郭周植(J. S. Kwak),文在德(J. D. Moon),河崎善一郞(Zenichiro Kawasaki) 대한전기학회 2006 전기학회논문지C Vol.55 No.11
Since 1996, KEPCO has been operating a wide range lightning detection system, LPATS, and been accumulating relative application techniques and statistical analysis skills. So, KEPRI already has its own basis to develope more accurate advanced detection technology and references to do comparative study. For three-dimensional imaging of lightning channels, UHF/VHF antenna systems were installed at 2 sites. The distance between two sites is about 30 ㎞. These systems were used the AOA(Angle of Arrival) methods for lightning detection. In this paper, we would like to introduce about our system and its results.
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