• Title/Summary/Keyword: Power system construction

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A GUI Implementation of a Power Plant Dynamic Simulation System on Windows NT/2000 (원도즈 NT/2000에서의 발전플랜트 동특성 해석시스템 그래픽 사용자 인터페이스 구현)

  • 이동수;이기현;조창호
    • Proceedings of the Korea Society for Simulation Conference
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    • 2002.05a
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    • pp.197-201
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    • 2002
  • APESS(Advanved Plant Engineering & Simulation System) is a dynamic simulation software for power plant which is being developed by Doosan Heavy Industries & Construction Co., Ltd. This Paper represents the GUI implementation of APESS on Windows NT/2000 operating system.

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A Study of LCCA and LCA to Evaluate Feasibility for Introducing Smart Quiescent Power Control System into Office Building (LCCA 및 LCA 분석을 이용한 오피스 빌딩에 지능형 대기전력 제어시스템 도입의 타당성 분석에 관한 연구)

  • Quan, Junlong;Lee, Seok-Jung;Choi, Hye-Mi;Kim, Kyung-Hwan;Kim, Ju-Hyung
    • Journal of the Korea Institute of Building Construction
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    • v.16 no.2
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    • pp.141-149
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    • 2016
  • Recently, in an attempt to overcome the defects of quiescent power shutdown system, smart quiescent power control system has been developed. However, due to its higher investment costs, feasibility evaluation must be conducted. While LCCA (Life Cycle Cost Analysis) model is useful to estimate net savings of alternatives that differ with respect to initial costs and operating costs, the environmental burdens are not considered. On the contrary, LCA (Life Cycle Assessment) model is suitable to assess environmental impacts associated with the stages of a product's life but it does not consider costs. In this study, a comprehensive analysis on the economic and environmental impacts of smart quiescent power control system is conducted by using LCCA and LCA model. In addition, sensitivity analysis is carried out to quantify accuracy of estimates.

The Introduction of #2 HVDC SYSTEM (육지-제주간 2차 HVDC SYSTEM 개요)

  • Jang, Suk-Han;Yoo, Sung-Hwan;Shin, Myoung-Sik;Lee, Gyu-Yong
    • Proceedings of the KIEE Conference
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    • 2008.11a
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    • pp.107-109
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    • 2008
  • Cheju-Haenam HVDC transmission system start it's commercial operation since 1998. JEJU island is supplied with it's about 45% of total electric power from main land with HVDC link. In JEJU island, the demand of electric power is growing every year. With a current power supply, electric power reserve rate will be below the recommended one. For a stable power supply to JEJU island, KEPCO start a construction of #2 HVDC transmission system. This report is for introduction and understanding of #2 HVDC system which will be installed between JEJU island and main land. This report includes a specification of converter station and DC cable. KEPCO expect that this system will solve the power supply problem and maximum wind power plant capacity problem as well.

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Analysis of Hydraulic Control System for Shuttle Power-shift Transmission (전후진 파워시프트 변속기 유압 제어 시스템 해석)

  • Kim, D.C.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.6 no.4
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    • pp.16-23
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    • 2009
  • The major system of an agricultural shuttle power-shift tractor is the transmission, using power-shift. Because the shifting performance depends on the hydraulic control system, the most important aspect of the optimization is the design of the hydraulic control system. This study was conducted to develop the simulation model of hydraulic control system for the shuttle power-shift transmission by using Easy5 software. Bench test was conducted to verify the simulation. Also, the design parameters which influence the pressure modulation characteristics were investigated.

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Power conversion control for zero emission buildings (탄소제로 빌딩을 위한 전력변환 제어)

  • Han, Seok-Woo
    • Proceedings of the KIPE Conference
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    • 2011.07a
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    • pp.504-505
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    • 2011
  • Decreasing actual greenhouse gas will be difficult if it is not solved addressed in architectural fields. Zero emission building or zero energy building, maximize the efficiency of energy, which means the building can operate by their own renewable energy facility without any other supplying. To be a zero emission building, a building needs realization of high efficiency low energy consumption, construction of building its own energy production facilities and lastly a power grid connection. According to increasing of DC load about TV, LED lighting, computer, IT in building for living and business, it is expected the save of energy when the system of AC power distribution change into the system of DC power distribution. Renewable energy exists a big different rate produced by outside environment. When electrical power overproduce, it can supply for system. Otherwise, if electrical power produce less, it can receive supply from system. Send and receive power can lead to zero to annual standard. This paper shows the simulation about efficient control of power conversion which is related to DC power distribution of architecture and DC output of renewable energy by using L-type converter.

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A Study on the Development of Battery Energy Storage System (전지이용 전력저장장치 기술개발)

  • Hwang, Yong-Ha;Lee, Keun-Seob
    • Proceedings of the KIEE Conference
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    • 1993.07b
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    • pp.905-907
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    • 1993
  • Demand for electricity is increasing annually. Especially, the daytime demand grawth shows higher than any other time period. So the big difference between maximum and minimum electrical demand becomes another important problem to be solved. The Battery Energy Storage System is chosen as one of the solutions among the sevral methods. The purpose of utilization of Battery Energy Storage System is to improve the daily load factor. Also, Battery Energy Storage System may be used for the load levelling or the load shifting as well as the spinning reserve. Up to now, only the pumped hydro power plant system has been operated on the commercial basis, but this system has so many constraints such as site, environmental effects, construction period, ect. Being considered current electrical power situation the development of electric storage system is in need latly. Among the various electric storage systems, Battery Energy System is chosen with the top priority because it has sevral merits to cover such as the short construction period, the demand site installation, and the food environmental characteristics.

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A Study on the Online Fault Detection System to construct the knowledge based Maintenance System of Intelligent Highway Information System (지능형 도로정보체계의 유지관리 지식기반 구축을 위한 온라인 고장검출 시스템 연구)

  • Ryu, Seung-Ki;Choi, Do-Hyuk;Choi, Tae-Soon;Moon, Hak-Yong;Kim, Young-Chun;Hong, Gyu-Jang
    • Proceedings of the KIEE Conference
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    • 1999.07b
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    • pp.677-679
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    • 1999
  • This paper introduces a implementation of fault detection for national highway line 3. Fault detection system was installed and operated on national highway line 3, environmental elements caused by abnormal status or faults has often happened. Therefore, the function of fault detection system is to speedy notify fault site, cause as well as scale of fault to manager. Though the fault detection and diagnosis system has been imported in the field of process of water and electric power, it is just beginning step in the field of ITS(Intelligent Transportation Systems). In general, Maintenance system is performed the online/offline process of detection, diagnosis and measure. This paper is studied online detection process, which is realtime remote detection.

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A Study on the Improvement of Project Management System for International Competitive Power and Global Business Strategy of Rail Project (철도사업의 종합사업관리 국제경쟁력 강화방안에 대한 연구)

  • Lee Young-Joo;Jang Seong- Yong
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.1595-1600
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    • 2004
  • High speed railroad project management has been almost completed by starting operation of Seoul-Busan high speed railroad with the exception of a few constructing blocks currently in April, 2004. After Korea Rail Network Authority was established in 2004, it needs to develop new project management system for both conventional railroad construction and high speed railroad construction for domestic railroad projects, while it plans to invest in overseas railroad project for logistics innovation and improvement in passenger transport services on a large scale. Therefore this paper provides the method that we can adapt the project management system for high speed railroad containing experiences and know-how from construction of high speed railroad for both conventional railroad construction and high speed railroad construction or improve project management system for high speed railroad to use it as project management system for overseas railroad projects.

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