• Title/Summary/Keyword: the Department system

Search Result 67,356, Processing Time 0.11 seconds

Design, Implementation of the Bulk Power Stabilizing System to ensure the appropriate Power System Reliability (적정 공급신뢰도 확보를 위한 안정화장치 구성 및 설치운영)

  • Kim, Chang-Mu;Lee, Hyo-Sang;Lee, Seung-Unn;Kim, Sok-Il
    • Proceedings of the KIEE Conference
    • /
    • 1999.07c
    • /
    • pp.1510-1513
    • /
    • 1999

  • Carried out simulation for yearly peak and March load time of the KEPCO Power System in 1999. Analysis of the problems in power system operation by powerflow, fault and stability study. Establishment of power system optimal operating plan by installation of power system stabilizer.

  • PDF

Efficient and User-Friendly Image Retrieval System Based on Query by Visual Keys

  • Serata, M.;Sakuma, K.;Stejic, Z.;Kawamoto, K.;Nobuhara, H.;Yoshida, S.;Hirota, K.
    • Proceedings of the Korean Institute of Intelligent Systems Conference
    • /
    • 2003.09a
    • /
    • pp.451-454
    • /
    • 2003

  • A new query method, called query by visual keys, is proposed to aim easy operation and efficient region-based image retrieval (RBIR). Visual keys are constructed from representative regions/subimages in a given image database, and the database is indexed with visual keys. A system on PC is presented, where text retrieval techniques are applied to the image retrieval with visual keys. Experimental results show that one retrieval is done within 4ms and that the proposed system achieves the comparable retrieval precision (with user-friendly operation and low computational cost) to conventional region based image retrieval systems

  • PDF

The Best Line Choice for Transmission System Expansion Planning on the Side of the Highest Reliability Level

  • Sungrok Kang;Trungtinh Tran;Park, Jaeseok;Junmin Cha;Park, Daeseok;Roy Billinton
    • KIEE International Transactions on Power Engineering
    • /
    • v.4A no.2
    • /
    • pp.84-90
    • /
    • 2004

  • This paper presents a new method for choosing the best line for transmission system expansion planning considering the highest reliability level of the transmission system. Conventional methodologies for transmission system expansion planning have been mainly focused on economics, which is the minimization of construction costs. However, quantitative evaluation of transmission system reliability is important because successful operation and planning of an electric power system under the deregulated electricity market depends on transmission system reliability management. Therefore, it is expected that the development of methodology for choosing the best lines considering the highest transmission system reliability level while taking into account uncertainties of transmission system equipment is useful for the future. The characteristics and effectiveness of the proposed methodology are illustrated by the case study using a MRBTS.

  • PDF KSCI