• Title/Summary/Keyword: electrical installation

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능동 데이터베이스를 이용한 중앙전력감시시스템 (A Centralized Monitoring System for Factory Electrical Installation Using Active Database)

  • 최상열;문현호;이종주
    • 조명전기설비학회논문지
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    • 제24권6호
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    • pp.115-122
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    • 2010
  • 중앙전력감시시스템은 공장 부하 설비 상황을 감시반에서 감시 및 신속한 제어를 수행함으로써 공장 부하 설비의 관리와 운영의 효율화를 극대화 하는 것이다. 이러한 시스템의 주된 특징은 공장 부하 설비의 운전상태 계측, Data 처리, PLC(Power Line Communication), 조명 제어 등의 감시 제어, 전력운용에 필요한 프로그램을 내장하여 효율적으로 계통을 관리하는 것이다. 본 연구에서는 능동데이터베이스를 이용하여 중앙전력감시시스템을 구현하는 방안을 제시함으로써, 공장 부하의 사고 징후를 사전에 파악하고, 사고 발생 시 이에 대한 대처를 데이터베이스 스스로 수행하도록 함으로써 인위에 의한 실수를 최소화 할 수 있도록 했으며, 그리고 제시된 시스템을 서로 다른 특징을 갖는 5개의 부하로 이루어진 공장 부하에 적용하여 그 유용성을 입증하였다.

해저케이블 비용 모델을 이용한 HVAC 해상변전소 적정 위치 선정에 관한 연구 (A Study on Siting of HVAC Offshore Substation for Wind Power Plant using Submarine Cable Cost Model)

  • 원종남;문원식;허재선;김재철
    • 전기학회논문지
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    • 제62권4호
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    • pp.451-456
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    • 2013
  • Development of the technologies for offshore wind power is proceeding actively and the installation capacity is continuously increasing because of its many advantages in comparison with the land wind power. Accordingly, project for Southwestern 2.5GW offshore wind power plant is in progress in Korea. Design of electric power systems for offshore wind power plant is very important due to its high investment and operational costs. Hence, it needs to be designed in order to minimize costs. This way can be employed in determining the installation location of offshore substation for HVAC wind power plant. According to the offshore substation site, MV inter-array cable and HV export cable lengths vary and they change a total cost regarding submarine cable. This paper represents cost models with variables which are MV inter-array cable and HV export cable lengths to locate the offshore substation for HVAC wind power plant. It is classified into submarine cable installation cost, reactive power compensator installation cost, ohmic losses, and unsupplied energy cost. By minimizing a total cost, an appropriate installation site of the offshore substation is determined.

IEC 60364 기반의 한국형 저압전기설비 통합 실증단지 모델링 및 차단기와 케이블의 선정 방안 고찰 (Study of Selection Plan of Circuit breakers, Cables and Modeling of Korean Low Voltage Electrical Installation integration Test Site based on IEC 60364)

  • 김두웅;류규상;김한수;신대성;류기환;김철환
    • 조명전기설비학회논문지
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    • 제29권9호
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    • pp.59-64
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    • 2015
  • IEC is an international standards which are used in many countries with Europe as the center. IEC standard is introduced in Korea according to WTO/TBT agreements, however until now there are no buildings in Korea which are designed applying IEC standard. Therefore, KEA(Korea Electric Association) is scheduled to construct Korean low voltage electrical installation integration test site which is designed applying IEC standard. In this paper, before being under construction of Korean low voltage electrical installation integration test site, power substation is modeled based on real design parameters and method to select circuit breakers and cables is presented applying IEC standard in the modeled power substation. EMTP(ElctroMagnetic Transient Program) is used for simulation program. EMTP which is power system analysis program is easy to model power system and power substation.