• 제목/요약/키워드: Korean next

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한국형 차세대 자기부상열차 개발을 위한 선진기술 현황 및 기술분석 (Status of Advanced Technologies and Technical Analysis for Development of Korean Next Generation Maglev)

  • 조한욱;방제성;한형석;성호경;김병현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 제39회 하계학술대회
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    • pp.614-615
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    • 2008
  • This paper describes the status of advanced technologies and technical analysis for development of Korean next generation maglev. The propulsion systems of worldwide maglev and research status of Korean maglev have been represented.

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차세대 이동통신 서비스 연구개발 현황 (On The Next Generation Mobile Communication Services in Korea)

  • Ryu, Seung-Wan;Ryu, Byung-Han
    • 한국경영과학회:학술대회논문집
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    • 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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    • pp.335-338
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    • 2004
  • In this paper, we present a perspective of the next generation mobile communication services and its characteristics. As a preliminary research work on the next generation mobile communications and services, we exploit the next generation mobile services [1]. We define the next generation mobile services as strata of services consisting of three different service levels, the service areas, the service functionalities, and the service technologies. We derive these service levels by means of the scenario based analysis. Finally, we propose a conceptual network architecture that can support the next generation mobile services by placing network functions and service elements within the network.

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계통변화를 고려한 자율 적응형 과전류 계전기 (Autonomous Adaptive Digital Over Current Relay)

  • 윤준석;이승재;최면송;강상희;김상태;임성일;오성민;김지균;박성준
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 A
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    • pp.6-8
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    • 2002
  • In this paper present Autonomous Adaptive Digital Over Current Relay which acts autonomous setting using voltage and current measured by relay in the change of power systems. Automation of relay setting is required for distribution automation although manual relay setting is used at present. This paper presents Autonomous Relay Setting which knows change of the power system and acquires setting element using the Recursive Least Squares. Relay setting is very difficult work. But proposed relay is expected to decrease burden of relay setting using acquired information of power system change and autonomous setting. Also fast protective ability is expected according to change of power system.

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DNP3.0을 이용한 과전류 계전기 에이전트의 통신 방안 연구 (A Study on communication method between OverCurrent Relay Agents using DNP 3.0)

  • 이한웅;정광호;임성일;현승호;최면송;이승재
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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    • pp.265-267
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    • 2002
  • In this paper, the communication between Over-Current Relay agents is realized using DNP(Distributed Network Protocol), which is the standard communication protocol of distribution automation system in KEPKO. The key words in OCR agent communication are defined and represented by use of DNP application function code. And the DNP index for OCR agent is defined. The proposed communication scheme is tested by use of Communication Test Harness, a test tool for DNP protocol to show its soundness.

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