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A Study on the Restoration Algorithm For Multi-Outage Areas in distribution system (광역고장을 고려한 정전 복구 알고리즘 연구)

  • Jung Jin Soo;Moon Hyun Kyung;Lim Seong Il;Lee Seung Jae
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.381-383
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    • 2004

  • This paper presents for service restoration Abstract -in electric power distribution systems. The aim of the service restoration is an emergency control in distribution system to restore out-of service areas as soon as possible when a fault occurs in distribution system. For this reason, this paper presents a new service restoration strategy for multi-outage areas. Proposed algorithm consists of two methods. One is individual restoration scheme, the other one is integrated restoration scheme. The former determines restoration order of outage areas based on restoration index. If the former method can not generate a feasible restoration plan, the latter would try to find new configuration without overloaded section through tie exchange method.

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Performance of the Two-Stage Iterative Fourier Transform Allgorithm for Designing Phase-Only Diffractive Pattern Elements

  • Jung, Phil-Ho;Cho, Doo-Jin
    • Journal of the Optical Society of Korea
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    • v.5 no.3
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    • pp.93-98
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    • 2001

  • In order to verify the performance of the two-stage iterative Fourier transform algorithm[Hankook Kwanghak Hoeji 11, 47 (2000)], a number of phase-only diffractive pattern elements which produce simple 16x16-pixel intensity patterns useful in the field of optical information processing have been designed and their performance has been compared with that from the nonlinear least-squares algorithm[Appl. Opt. 36, 7297(1977)] which is computationally intensive. for all intensity patterns, elements designed by the former algorithm show better overall signal-to noise ratio and uniformity, although they show essentially the same diffraction efficiency. In the case of continuous phase elements, they show far superior uniformity. Computationally,. the former algorithm is far more efficient than the latter.

  • https://doi.org/10.3807/JOSK.2001.5.3.093 인용 PDF

A New Record of Nyctalus furvus (Chiroptera: Vespertilionidae) from Korea, and the Description of Tadarida teniotis (Chiroptera: Molossidae), a Rarely Collected Bat in Korea

  • Yoon, Myung-Hee
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.1
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    • pp.87-93
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    • 2009

  • Taxonomic studies on two bat species, Nyctalus furvus Imaizumi and Yoshiyuki 1968 belonging to the Vespertilionidae, and Tadarida teniotis (Rafinesque) 1814 belonging to the Molossidae collected at Busan, Korea were carried out. The former, which has been known as an endemic species in Japan, is newly recorded in the Korean fauna and the latter is a very rare species which has not been collected since 1928 (Ognev, 1928) until two females were collected at Busan in this study, although Kishida and Mori (1931) reported the occurrence of the latter with no collecting record. Due to the addition of the former to the South Korean bat fauna, the bat fauna is composed of a total of twenty one species and one subspecies belonging to three families.

  • https://doi.org/10.5635/KJSZ.2009.25.1.087 인용 PDF KSCI